JPH06218363A - Water purifier - Google Patents

Abstract

PURPOSE:To provide a water purifier whose filtration container can be detached for replacement and which has heat purifying function. CONSTITUTION:A water purifier is composed of a main body 52, a filter medium container 53 which is put in the inside of the main body 52 in the way it can be detached freely, a heater 55 to heat the filter medium container 53, a rotary pipe 57 for water flow to be connected to the filter medium container in the way it can be detached freely. An upper cover 61 which can be opened and closed freely to replace the filter medium container 53 is installed in the main body 52. Consequently, the filtering function of the filter medium can be restored economically by detaching the filter medium container 53 and replacing it with new one.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purifier having a heat cleaning function.

[0002]

2. Description of the Related Art In recent years, water purifiers having a heater and having a heat cleaning function have become widespread, and a conventional water purifier of this type will be described below.

FIG. 3 is a perspective view of a conventional water purifier,
In FIG. 3, 1 is the body of the water purifier, 2 is a filter medium container provided in the body 1 and made of heat-resistant and pressure-resistant material,
Activated carbon 3 is stored in the filter medium container 2. The activated carbon 3 is covered with a water-permeable member (for example, a fine mesh). Reference numeral 4 denotes a heater provided on the inner bottom portion of the filter medium container 2 for heating the filter medium container 2, reference numeral 5 denotes a temperature detector having a thermistor for detecting the temperature of the filter medium container 2, and the temperature detector 5 is an outer portion of the filter medium container 2. Is in contact with.

Reference numeral 6 denotes a unit portion having a switching valve. The unit portion 6 is connected to a running water pipe 7 for guiding external water into the apparatus and a water pipe 8 for discharging filtered water. Further, water pipes 9 and 10 are provided between the unit portion 6 and the filter medium container 2, and a water pipe 12 is further provided between the unit portion 6 and the horizontal valve portion 11. The horizontal valve portion 11 has a cylindrical shape, and the central portion of the side surface is connected to the upper surface of the filter medium container 2. A drain pipe 1 for discharging hot water obtained by washing the activated carbon 3 to the outside on the end surface opposite to the side where the water pipe 12 is connected to the horizontal valve portion 1
3 are connected.

A valve portion 14 is housed in the horizontal valve portion 11 and is urged toward the water pipe 12 by a spring 15. Reference numerals 16, 17, and 18 denote holes that are provided inside the unit portion 6 and that have projecting portions at their peripheral portions. The holes 16 are the water pipes 1.
2, the hole 17 is connected to the water pipe 9, and the hole 18 is connected to the water pipe 8. Reference numeral 19 denotes a switching valve rotatably held inside the unit portion 6, and the switching valve 1
9 has grooves 20 and 2 formed in the side surface along the circumferential direction.
1 and 22 are formed respectively.

The grooves 20 and 22 are formed at the same position along the circumferential direction, but only the groove 21 is formed at a different position. Reference numeral 23 is a groove provided on the entire circumference of the side surface of the switching valve 19. 24, 25, 26 are grooves 20, 21, respectively.
The balls 24, 25, and 26 are held by the ball 22, and each of the balls 24, 25, and 26 is made of a material such as stainless steel or resin that does not easily rust. The ball 24 opens and closes the hole 16, the ball 25 opens and closes the hole 17, and the ball 26 opens and closes the hole 18.

Reference numeral 27 is an annular packing attached to the groove 23, and the packing 27 forms a hole in the internal space of the unit portion 6
It is divided into a space in which 6 and 17 are provided and a space in which holes 18 are provided. At this time, the above-mentioned running water pipe 7 has holes 16, 17
Is connected to the space where is provided. 28 is a motor for rotating the switching valve 19.

Next, a mechanism for transmitting the rotation of the motor 28 to the switching valve 19 will be described. A worm gear 29 is provided on the rotation shaft of the motor 28, the rotation of the worm gear 29 is transmitted to the gear 30, and the rotation of the gear 30 is provided with a small diameter gear (not shown) provided coaxially with the gear 30. Is transmitted to the gear 31 via. Since the gear 31 is joined to the end surface of the switching valve 19 via the shaft,
The switching valve 19 also rotates as the gear 31 rotates. Three
Reference numeral 2 denotes a cam attached to the end surface of the switching valve 19 opposite to the side where the gear 31 is attached via a shaft.
2 is provided with a convex portion.

Reference numeral 33 is a switch section composed of photo interrupters, and 34 and 35 are switch sections composed of microswitches. Reference numeral 36 denotes a control unit that houses components such as a microcomputer that controls the motor 28, the heater 4 for heating, and the like.
It is provided below the unit portion 6 via 7. Reference numeral 38 is a power supply unit provided in the control unit 36.

With respect to the water purifier constructed as described above, the flow of water during water purification and washing of activated carbon will be described below.

First, the water stop state will be described. As shown in FIG. 4A, the holes 16, 17, 18 provided in the unit portion 6
Since the balls 24, 25, and 26 are closed respectively, the pressurized water flows from the water pipe 7 to the unit portion 6
Even if it reaches to, the flow of water does not occur. Further, as shown in FIG. 4B, the convex portion of the cam 32 is located in the groove provided in the switch portion 33.

Next, the purified water state is shown in FIG. 5 and FIG.
An explanation will be given using (b). The motor 28 is driven from the water-stopped state so that the switching valve 19 is moved so that the convex portion of the cam 32 makes the switch portion 3
Rotate toward 5 When the convex portion of the cam 32 presses the switch portion 35, the motor 28 stops,
The switching valve 19 stands still with the convex portion of the cam 32 pressing the switch portion 35. Then, as shown in FIG. 6A, the balls 24 and 26 of the holes 16 and 18 move to open the holes 16 and 18, respectively.

As described above, the pressurized water reaches the unit portion 6 via the running water pipe 7, so that when the hole 16 is opened, the water flows from the hole 16 to the water pipe 12, and further the horizontal valve portion. It flows into 11. The water flowing into the horizontal valve portion 11 moves the valve portion 14 horizontally against the elastic force of the spring 15.

As described above, since the water pipe connected to the upper surface of the filter medium container 2 is provided near the center of the side portion of the horizontal valve portion 11, the water flowing into the horizontal valve portion 11 causes the valve portion 14 to reach a predetermined amount. When moved, the water flows into the filter medium container 2. The water that has flowed into the filter medium container 2 is purified by the activated carbon 3 and flows again to the unit portion 6 via the water pipe 10 provided at the lower portion of the filter medium container 2. At this time, since the packing 27 is provided, the water flowing into the unit portion 6 from the water flow pipe 7 and the water flowing into the unit portion 6 from the filter medium container 2 are not mixed. The purified water that has flowed into the unit portion 6 is discharged to the outside through the hole 18 and the water pipe 8.

When the water purification state is completed, a predetermined operation is performed to drive the motor 28 and the switching valve 19 to the cam 3.
It is rotated so that the convex portion of 2 approaches the switch portion 33. Then, when the convex portion of the cam 32 acts on the switch portion 33, the motor 28 stops rotating and the water is stopped.

Next, the purification state of the activated carbon 3 will be described with reference to FIGS. 7 and 8 (a), (b). First, in a water-stopped state, the heater 4 is energized to heat the inside of the filter medium container 2 to remove impurities and the like adsorbed on the activated carbon 3. Then, the inside of the filter medium container 2 is kept at a predetermined temperature (for example, about 65 ° C., but may be any temperature as long as it can remove impurities and the like from the activated carbon 3) for a predetermined time (for example, about 30 minutes to 60 minutes,
After being heated, the motor 28 is driven from the water stop state to change over the switching valve 19
Is rotated so that the convex portion of the cam 32 approaches the switch portion 34.

When the convex portion of the cam 32 presses the switch portion 34, the motor 28 stops, and the switching valve 19 is stopped with the convex portion of the cam 32 pressing the switch portion 34. Then, as shown in FIG. 8A, the ball 25 moves from above the hole 17 to open the hole 17. Since the pressurized water reaches the unit portion 6 via the running water pipe 7, the hole 17
Is opened, water flows from the hole 17 into the filter medium container 2 through the water pipe 9. Then, the hot water (water containing impurities and the like) after washing the activated carbon 3 is driven to the upper surface of the filter medium container 2 by the water flowing from the water pipe 9, passes through the horizontal valve portion 11, and is drained from the drain pipe 13. To be done.

After pouring water into the filter medium container 2 through the water pipe 9 for a predetermined time, a predetermined operation is performed to drive the motor 28,
The switching valve 19 is rotated so that the convex portion of the cam 32 approaches the switch portion 33. Then, when the convex portion of the cam 32 acts on the switch portion 33, the motor 28 stops rotating and the water is stopped.

FIG. 9 is an external perspective view of a conventional water purifier.
40 is a display unit for displaying the time and the fact that heat cleaning is in progress,
Reference numeral 41 is an operation unit for operating the main body 1, and details of the operation unit 41 are shown in FIG. FIG. 10 is an enlarged view of an operation unit of a conventional water purifier. In FIG. 10, 42 is an operation button for setting the present time, 43 is an operation button for bringing the main body 1 to the water stop state and advancing the time when setting the time, and 44 is for setting the main body 1 to the water purification state and setting the time. The operation button for advancing the time to 45, 45 is an operation button for manually cleaning the activated carbon and shifting the digit of "hour" or "minute", and 46 is an operation button for setting the activated carbon cleaning at a specific time. .

When setting the present time, the operation button 42 is pushed to enter the present time setting mode, and a predetermined "hour" is set by the operation button 43 and the operation button 44, and then the digit is shifted by the operation button 45. In addition, the operation button 43 and the operation button 44 are used to set a predetermined "minute".
Set to. Further, when setting the time of the activated carbon cleaning, the operation button 46 is pushed to enter the activated carbon cleaning time setting mode, and the operation buttons 43, 44, and
45 is used to set a predetermined time.

In FIG. 9, 47 is a plug connected to the power source in the main body 1, and 48 is one end of the water pipe 7 described above.
A tube connected to (not shown), 49 is a water tap 50
The other end of the tube 48 is connected to the connecting member 49. The connecting member 49 is provided with a lever 51, and it is possible to select whether tap water is sent to the main body 1 or discharged as raw water from the connecting member 49 by switching the lever 51.

[0022]

However, in the water purifier having the heat cleaning function in the conventional structure, the filter medium container is not of the detachable type. Therefore, when the filtering performance of the filter medium is lost, the entire water purifier must be replaced. There was a problem that the maintenance cost was very high.

Therefore, according to the present invention, when the filtration performance of the filter medium is lost, the filtration performance can be restored simply by replacing the filter medium container,
The purpose is to provide a water purifier that requires only a filter medium container.

[0024]

To this end, the present invention provides a main body having an openable / closable cover, a filter medium container detachably housed in the main body, a heater for heating the filter medium container, and a heater for heating the filter medium container. The water purifier was composed of a pipe for water passage that is detachably connected to the filter medium container.

[0025]

According to the above construction, by opening and closing the cover of the main body, the filter medium container can be easily taken out and replaced, and the filtration performance can be restored at low cost.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a water purifier according to an embodiment of the present invention. 52 is the main body, 53 is the main body 52
Is a filter medium container housed inside. A cylindrical heat transfer plate 54 that is in close contact with the outer peripheral surface of the filter medium container 53 is provided. A heater 55 is wound around the heat transfer plate 54 so as to be in intimate contact therewith, and the filter medium container 53, the heat transfer plate 54, and the heater 55 are in intimate contact with each other to improve the efficiency of heat conduction.

A lower portion of the filter medium container 53 is connected to a switching valve 56, and a tip end of a T-shaped rotary pipe 57 for water passage is connected to a trumpet-shaped insertion opening 53a in the upper portion of the filter medium container 53. Further, on the upper part of the main body 52, when replacing the filter medium container 53, a removable upper cover 6 is provided to facilitate the work.
1 is provided. In FIG. 1, the structure is the same as the conventional structure except the structure relating to the structure of the switching valve 56 and the operating method thereof, and the structure for attaching and detaching the filter medium container 53.

FIG. 2 is a diagram showing a method for attaching and detaching the filter medium container of the water purifier in one embodiment of the present invention. FIG. 2A is a perspective view showing a state in which the upper cover is removed.
A screw portion 52a is provided on the upper portion of 2, and a nut portion 61a is provided on the inner peripheral surface of the upper cover 61. The upper cover 61 is attached to the upper portion of the main body 52 by screw means so as to be openable and closable. As a method of fixing the upper cover 61 and the main body 52, other means may be used instead of the screw means of this embodiment.

2 (b) to 2 (d) are perspective views showing a method of attaching / detaching the filter medium container. A trumpet-shaped insertion opening 53a is opened in the upper portion of the filtration material container 53 containing the filtration material 62, and the tip of the rotary pipe 57 is detachably connected to the insertion opening 53a. In order to rotate the rotary pipe 57, one end has a trumpet-shaped pipe 59 and a sealing material 6.
3, and the other end is connected to the on-off valve 60 via the sealing material 64. Also, the filter medium container 5
The lower part of 3 is detachably connected to the switching valve 56.

Next, the filter medium container 53 constructed as described above.
The method of attaching and detaching will be described. First, a method for removing the filter medium container 53 will be described.

When the upper cover 61 is rotated in the direction of arrow A in FIG. 2A, the upper cover 61 moves in the direction of arrow B, and the upper cover 61 can be removed from the main body 52. Next, in FIG. 2B, the T-shaped rotary pipe 57 is rotated in the direction of arrow E to open the connection with the filter medium container 53. Next, by moving the filter medium container 53 in the direction of arrow F in FIG. 2C, the connection between the lower portion of the filter medium container 53 and the switching valve 56 (see FIG. 1) is opened, and the filter medium container 53 is removed from the main body 52. You can take it out. Reference numeral 58 is a sealing material attached to the tip of the rotary pipe 57. FIG. 2D shows the completion of taking out.

Next, a method of attaching the filter medium container 53 will be described. In the state of FIG. 2D, the filter medium container 53 is moved in the direction of the arrow G, inserted into the heat transfer plate 54, and the switching valve 56 and the lower portion of the filter medium container 53 are connected to each other, so that the filter medium container 53 of FIG.
It becomes the state of. Next, the rotary pipe 57 is rotated in the direction of the arrow H to insert the tip of the rotary pipe 57 into the insertion hole 53a of the filter medium container 53, so that the state shown in FIG. Next, as shown in FIG. 2A, the upper cover 61 is moved in the direction of arrow C and rotated in the direction of arrow D to move the main body 52.
When the upper cover 61 is attached to the above, the attachment is completed.

[0034]

As described above, according to the present invention, the filter medium container is detachable from the main body in the water purifier having the heat cleaning function. Therefore, it is possible to restore the filtration performance at a low cost by replacing only the filter medium container. it can.

[Brief description of drawings]

FIG. 1 is a perspective view of a water purifier according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a method for attaching and detaching a filter medium container of a water purifier according to an embodiment of the present invention. FIG. 2A is a perspective view showing a state in which an upper cover is removed. FIG. (C) is a perspective view showing how to attach / detach a filter medium container. (D) is a perspective view showing how to attach / detach a filter medium container.

FIG. 3 is a perspective view of a conventional water purifier.

FIG. 4 (a) is a partially cutaway sectional view of a unit part of a conventional water purifier, and FIG. 4 (b) is a sectional view of a switch part of the conventional water purifier.

FIG. 5 is a perspective view of a conventional water purifier.

FIG. 6 (a) is a partially cutaway cross-sectional view around a unit part of a conventional water purifier, and FIG. 6 (b) is a cross-sectional view around a switch part of the conventional water purifier.

FIG. 7 is a perspective view of a conventional water purifier.

FIG. 8 (a) is a partially cutaway cross-sectional view around a unit part of a conventional water purifier, and FIG. 8 (b) is a cross-sectional view around a switch part of the conventional water purifier.

FIG. 9 is an external perspective view of a conventional water purifier.

FIG. 10 is an enlarged view of an operating portion of a conventional water purifier.

[Explanation of symbols]

 52 Main body 53 Filter medium container 54 Heat transfer plate 55 Heater 56 Switching valve 57 Rotating pipe 61 Upper cover 62 Filter medium

Claims (2)

[Claims] 1. A main body having an openable / closable cover, a filter medium container detachably housed inside the main body, a heater for heating the filter medium container, and water flow detachably connected to the filter medium container. A water purifier characterized by having a pipe for use. 2. A heat transfer plate is brought into close contact with the outer surface of the filter medium container,
The water purifier according to claim 1, wherein the heater is wound around the heat transfer plate.