JP2797841B2 - Water purification equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to relates to a water purification device capable of reproducing cleaned filter medium such as activated carbon.

[0002]

2. Description of the Related Art FIG. 4 is a perspective view showing a conventional water purifier.

[0003] In FIG. 4, reference numeral 1 denotes a main body case, and 2 denotes a filter medium container provided in the main body case and made of a heat-resistant and pressure-resistant material. The activated carbon 3 is covered with a water-permeable member (for example, a fine wire mesh or the like) as in the related art. Reference numeral 4 denotes a heater provided at the inner bottom of the filter medium container 2 for heating the filter medium container 2, 5 a temperature detector having a thermistor for detecting the temperature of the filter medium container 2, and a temperature detector 5 disposed outside the filter medium container 2. Parts are in contact. Reference numeral 6 denotes a unit having a switching valve. The unit 6 has a flowing water pipe 7 for guiding external water into the apparatus.
And a water pipe 8 for discharging the filtered water. Water pipes 9 and 10 are provided between the unit 6 and the filter medium container 2, and a water pipe 12 is provided between the unit 6 and the horizontal valve 11. The horizontal valve portion 11 has a cylindrical shape,
The center of the side surface is connected to the upper surface of the filter medium container 2. In addition, a drain pipe 13 for discharging hot water after washing the activated carbon 3 to the outside is connected to an end face of the horizontal valve portion 11 opposite to the side to which the water pipe 12 is connected. In the horizontal valve section 11, there is a valve section 1
4 are housed and urged toward the water pipe 12 by a spring 15. Reference numerals 16, 17, and 18 denote holes provided inside the unit portion 6 and having a protruding portion on the peripheral edge, respectively.
6 is connected to the water pipe 12, 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. The switching valve 19 has grooves 20, 21, 22 formed in the side surface portion along the circumferential direction. Groove 2
The formation positions of 0 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 denotes a groove provided on the entire side surface of the switching valve 19. 24, 25, and 26 are grooves 20, 21, 22, respectively.
The balls 24, 25 and 26 are each made of a material which is hard to rust, such as stainless steel or resin. 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 denotes an annular packing attached to the groove 23.
The space is divided into a space provided with 6, 17 and a space provided with the hole 18. At this time, the above-mentioned water pipe 7 has holes 16 and 17.
Is connected to the space provided. 28 is a motor for rotating the switching valve 19. The following motor 28
The mechanism by which the rotation of the rotation is transmitted 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 controlled by a small-diameter gear (not shown) provided coaxially with the gear 30. Through gear 31
Conveyed to. Since the gear 31 is joined to the end face of the switching valve 19 via the shaft, the switching valve 19 also rotates as the gear 31 rotates. Reference numeral 32 denotes a cam mounted via an axis on the end face of the switching valve 19 opposite to the side on which the gear 31 is mounted. The cam 32 has a convex portion. Reference numeral 33 denotes a switch unit composed of a photo interrupter, and reference numerals 34 and 35 denote switch units each composed of a microswitch. Reference numeral 36 denotes a control unit in which components such as a microcomputer for controlling the motor 28 and the heater 4 are stored. The control unit 36 is provided below the unit 6 via a heat insulating member 37. Reference numeral 38 denotes a power supply unit provided in the control unit 36.

The flow of water in the water purifier constructed as described above will be described below when purifying water and when cleaning the activated carbon 3.

First, the water stop state will be described. As shown in FIG. 5A, holes 16, 17, 18 provided in the unit 6
Are closed by the balls 24, 25 and 26, respectively.
No water flow occurs. Also, as shown in FIG. 5B, the convex portion of the cam 32 is located in a groove provided in the switch portion 33.

Next, the purified water state is shown in FIGS. 6 and 7 (a) and (b).
This will be described with reference to FIG. From the water stop state, the motor 28 is driven to rotate the switching valve 19 such that the convex portion of the cam 32 approaches the switch portion 35. When the convex portion of the cam 32 presses the switch portion 35, the motor 28 stops, and the switching valve 19 stops while the convex portion of the cam 32 presses the switch portion 35. Then, as shown in FIG.
The balls 24 and 26 move from above the hole 6 and the hole 18, respectively, and open the hole 16 and the hole 18, respectively. As described above, the pressurized water reaches the unit section 6 via the flowing 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 flows into the horizontal valve section 11. . The water flowing into the horizontal valve portion 11 causes the valve portion 14 to
To move horizontally against the elastic force of As described above, a water pipe connected to the upper surface of the filter medium container 12 is provided in the vicinity of the center of the side of the horizontal valve section 11, so that the water flowing into the horizontal valve section 11 moves the valve section 14 by a predetermined amount. The water flows into the filter medium container 2. The water flowing into the filter medium container 2 is purified by activated carbon, and flows again toward the unit 6 via a water pipe 10 provided at a lower portion of the filter medium container 2. At this time, since the packing 27 is provided, the water flowing from the water pipe 7 to the unit 6 and the water flowing from the filter medium container 2 to the unit 6 do not mix. The purified water that has flowed into the unit 6 is supplied to the hole 18 and the water pipe 8.
Released to the outside through When ending the water purification state, a predetermined operation is performed to drive the motor 28 and rotate the switching valve 19 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 FIG.
A water stop state as shown in FIG.

Next, the purified state of activated carbon will be described with reference to FIGS. 8 and 9 (a) and 9 (b). First, in the water stop 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. And filter medium container 2
At a predetermined temperature (about 65 ° C. in this embodiment,
After heating for a predetermined period of time (about 30 to 60 minutes in this embodiment, any temperature may be used as long as impurities and the like can be removed from the activated carbon). Then, the motor 28 is driven from the water stop state, and 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 switches the convex portion of the cam 32 to the switch portion 34.
Is stopped while pressing. Then, the ball 25 moves from above the hole 17 as shown in FIG. Since the pressurized water reaches the unit 6 via the flowing water pipe 7, the water flows into the filter medium container 2 from the hole 26 through the water pipe 9 by opening the hole 17. Then hot water (water containing impurities etc.) after washing the activated carbon
Is driven to the upper surface of the filter medium container 2 by the water flowing from the water pipe 9, and is drained from the water pipe 12 through the horizontal valve portion 11. After water is poured into the filter medium container 2 from the water pipe 9 for a predetermined time, a predetermined operation is performed to drive the motor 28, and the switching valve 19 is turned by the convex portion of the cam 32 to the switch portion 33.
Rotate in the direction approaching. Then, when the convex portion of the cam 32 acts on the switch portion 33, the motor 28 stops rotating, and the water stops as shown in FIG.

FIG. 10 is an external perspective view showing a conventional water purifier. In FIG. 10, reference numeral 39 denotes a main body of the water purifier, reference numeral 40 denotes a display unit for displaying the time and the fact that heat cleaning is being performed, and reference numeral 41 denotes an operation unit for operating the main body 39. Details of the operation unit 41 are shown in FIG. . FIG. 11 is an enlarged view of the operation unit. In FIG. 11, reference numeral 42 denotes an operation button for setting the current time, reference numeral 43 denotes an operation button for setting the main body 39 in a water-stopped state and advancing the time when setting the time, and reference numeral 44 denotes an operation button for setting the main body 39 to a water-cleaning state and setting the time. An operation button 45 for moving the time forward, an operation button 45 for manually cleaning the activated carbon and shifting digits such as "hour" and "minute", and an operation button 46 for setting the activated carbon to be washed at a specific time. is there. To set the current time, press operation button 4
2 to enter the current time setting mode,
Then, after setting a predetermined "hour" by the operation button 44, digit shift is performed by the operation button 45, and further, setting to a predetermined "minute" is performed by the operation button 43 and the operation button 44. When setting the time for activated carbon cleaning,
The operation button 45 is pressed to set the activated carbon cleaning time setting mode, and the operation buttons 43, 44, and 45 are set in the same manner as the current time setting.
Is used to set a predetermined time. 47 is a plug connected to the power supply in the main body 39, 48 is a tube having one end connected to the above-mentioned water pipe (not shown), 49 is a tap 5
The other end of the tube 48 is connected to the connecting member 49 with the connecting member attached to the connecting member 49. The connecting member 49 is provided with a lever 51, and the tap water is sent to the main body 39 by switching the lever 51, or the connecting member 4 is used as raw water.
9 can be selected.

A method for controlling the water purifier configured as described above will be described. FIG. 12 is a block diagram of a conventional water purifier.

In FIG. 12, 4 is a heating heater, 5 is a temperature detector, 40 is a display unit, 41 is an operation unit, and 33 and 3
Reference numerals 4 and 35 denote switch units, which are the same as those described in FIG. Reference numeral 52 denotes a microcomputer provided in the control unit 36.
Is provided with an oscillating means 52a for generating a clock signal. 53 is a motor drive circuit which drives the motor 28 and is controlled by the microcomputer 52;
Drives the heating heater 4 and the microcomputer 52
And a heater drive circuit controlled by the temperature detector 5. The reason why the heater drive circuit 54 is controlled by both the microcomputer 52 and the temperature detector 5 is as follows.
If the microcomputer 52 runs away while the heating heater 4 is generating heat, it is conceivable that the heating of the filter medium container 2 may be continued even if the temperature in the filter medium container 2 becomes higher than a predetermined temperature. Therefore, the heater detector 54 also controls the heater drive circuit 54. That is, when the temperature detector 5 detects a temperature equal to or higher than a predetermined temperature, the operation of the heater drive circuit 54 is stopped separately from the microcomputer 52, thereby preventing abnormal heating of the filter medium container 2.

The operation of the control system configured as follows will be described with reference to FIG. First, when the power is turned on to the device, the microcomputer 52 first switches the switching valve 1.
9 is determined based on the outputs from the switch units 33, 34, and 35. After that, the device enters the power recovery mode, and the time portion of the display unit 40 starts to light. Then, the user presses the button of the operation unit 41 to set the current time as described above. When the setting is completed, if the switching valve 19 is not in the water stop state, the microcomputer 52 operates the motor drive circuit 5.
3 to drive the motor 28 to rotate the switching valve 19 to the water-stop position as shown in FIG.
Further, when the heating of the filter medium container 2 and the drainage of the hot water in the filter medium container are defined as one cycle, this is set to one to several cycles (in this embodiment, N times). At this time, the heat retention time of the filter medium container 2 is also set in advance. Such processing is performed before the operation of STEP (hereinafter abbreviated as S) 1 starts. When the operation starts in S1, first, in S2, the operation unit 4
A key scan of the button 1 is performed. In S2, processing as shown in FIG. 14 is performed. First, in S3, the motor 28
N / OFF is controlled, and the display unit 40 is controlled in S4.
Next, in step S5, the output of the buttons of the operation unit 41 such as water stoppage, water purification, thermal cleaning, and thermal cleaning time setting is scanned to make a determination. Thereafter, in S6, the outputs of the switch units 33, 34, 35 are scanned. When the key scan processing in S2 is completed as described above, the mode is switched in S7. The mode switching is performed as shown in FIG. First, at S8, the operation unit 4
It is determined whether button 1 has been pressed. That is, S
In step 5, it is determined whether or not any button was pressed when the button of the operation unit 41 was scanned. When any button is pressed, it is determined in S9 whether the pressed button is the water stop operation button 43. If the pressed button is the water stop operation button 43, the water stop mode is set in S10, and the process returns to S7. If the pressed button is not the water stop operation button, the process proceeds to S11, and it is determined whether the pressed button is the water purification operation button 44. If the button pressed here is the water purification operation button 44, the flow proceeds to S12, sets the water purification mode, and returns to S7. If the pressed button is not the clean water operation button 44, the process proceeds to S13, and it is determined whether the pressed button is the operation button 45 for manual thermal cleaning. If the button pressed here is the operation button 45 for manual thermal cleaning, the process proceeds to S14, where the thermal cleaning mode and the heat retention mode are set, and the process returns to S7. If the pressed button is not the manual thermal cleaning operation button 45, the process proceeds to S15, and it is determined whether or not the pressed button is the thermal cleaning time setting operation button 46. If the button pressed here is the operation button 46 for setting the thermal cleaning time, the process proceeds to S16, and it is determined whether or not the current mode is the thermal cleaning mode. If in the thermal cleaning mode, proceed to S17,
The water stop mode is set, and the process returns to S7. If the mode is not the thermal cleaning mode in S16, the process proceeds to S18, sets the thermal cleaning time setting mode, and returns to S7. If the button pressed in S15 is not the operation button 46 for setting the thermal cleaning time, the process returns to S7. If the button of the operation unit 41 has not been pressed in S8, the process proceeds to S19, and it is determined whether or not the set time of the thermal cleaning has been reached. When the thermal cleaning set time comes, the thermal cleaning mode of S14 is set, and the process returns to S7. If the set time of the thermal cleaning has not come in S19, the process returns to S7. When the process in S7 is completed, the process proceeds to S20, in which it is determined whether the water stop mode is set. If the water stop mode is not set, the process proceeds to FIG. In S21, it is determined whether or not the mode is set to the water purification mode. If the mode is set to the water purification mode, the process proceeds to S22. If the heating heater 4 is in the heating state, the microcomputer 52 sends a signal to the heater driving circuit 54. To terminate the energization of the heater 4. Next, proceeding to S23, the switch unit 3 determines whether or not the switching valve 19 is at the water purification position (that is, whether or not the switching valve 19 is located at the position as shown in FIG. 6).
The microcomputer 52 makes a judgment by looking at the outputs from 3, 34 and 35. At this time, if the switching valve 19 has not reached the water purification position, the process proceeds to S24, where the microcomputer 52 sends a signal to the motor drive circuit 53, and the motor 2
8, the switching valve 19 is moved to the water purification position, and thereafter, the flow returns to between S1 and S2. Also S23
If the switching valve 19 is at the water purification position in S2,
5, the microcomputer 52 is driven by a motor drive circuit 53.
To stop the driving of the motor 28, and thereafter return to between S1 and S2. If the mode is not set to the water purification mode in S21, the process proceeds to the process in FIG. S
At 26, it is determined whether or not the mode is set to the thermal cleaning mode.
Go to 7. In S27, it is determined whether or not the mode is set to the thermal cleaning time setting mode. If the mode is set to the thermal cleaning time setting mode, the process proceeds to S28, and the time for performing thermal cleaning with the operation button of the operation unit 41 is set as described above. Set. Thereafter, the process returns between S1 and S2. Also S
If the heat cleaning time setting mode is not set in S27, S
Return between 1 and S2. If the thermal cleaning mode has been set in S26, the flow proceeds to S29, and if the heater 4 has not been energized, the microcomputer 52 sends a signal to the heater drive circuit 54 to energize the heater 4 to allow the heater 4 to be energized. Heat. Next, in S30, it is determined whether or not the heat retention mode is set, and if it is set, the process proceeds to the process shown in FIG. In S31, it is determined whether the switching valve 19 is in the water stop position as shown in FIG.
The microcomputer makes a judgment based on the outputs of 3, 34 and 35, and if it is at the water stop position, the process proceeds to S32. S32
Then, the microcomputer 52 is a motor drive circuit 53
To the motor 28 to drive the motor 28, the switching valve 1
Rotate 9 Then, it returns between S1 and S2. S3
If the switching valve 19 is at the water stop position in step S1,
Go to 33, if the motor 28 is driving in S33,
The microcomputer 52 outputs a signal to the motor drive circuit 53 to stop driving the motor 28. Thereafter, in S34, the energizing time of the heater 4, that is, the heat retention time of the filter medium container 2 is counted. Next, the heat retention time set in advance in S35 is compared with the heat retention time counted in S34, and if the time is over, the process proceeds to S36, and if not, the process returns between S1 and S2. In S36, the heat retention time is set again, and thereafter, in S37, the heat retention mode is switched to the drain mode, and the process returns to between S1 and S2. S30
If the mode is not set to the heat retention mode, the process proceeds to S38, and the microcomputer 52 determines whether or not the switching valve 25 is at the drain position as shown in FIG. 8 based on the outputs from the switch sections 33, 34, 35. If it is determined that the switching valve 19 is not at the drain position, the process proceeds to S39. S3
In step 9, a signal is output from the microcomputer 52 to the motor drive circuit 53 to drive the motor 28 and move the switching valve 19 to the drain position. Next, proceeding to S40, the time for draining the water in the filter medium container 2, that is, the drainage time is set to a predetermined time, and then the flow returns to between S1 and S2. If the switching valve 19 is at the drain position in S38, the process proceeds to S41. If the motor 28 is being driven in S41, the microcomputer 52
3 to stop driving the motor 28. Thereafter, the process proceeds to S42, in which the preset cycle number is compared with the current cycle number. When the current cycle reaches the preset cycle number, the process proceeds to S43, and the current cycle number is reset to zero. Then, in S44, the thermal cleaning mode is switched to the water stop mode, and the cleaning interruption mode is set. Thereafter, the flow returns to between S1 and S2. If the current cycle number is smaller than the preset cycle number in S42, the process proceeds to S45 and the current drainage time is counted. In step S46, the drainage time set in step S40 is compared with the current drainage time.
The process returns to step S2, and if not, the process proceeds to step S47. At S47, the drainage mode is switched to the heat retention mode, and at S48, the cycle number is incremented by 1, and the process returns to between S1 and S2. If the water stop mode is set in S20, the process proceeds to S49. S49
If the heater 4 is energized, the microcomputer 52 outputs a signal to the heater drive circuit 54 to stop the energization of the heater 4. Then, the process proceeds to S50, where it is determined whether or not the thermal cleaning mode is set. If the mode is set, the process proceeds to the process in FIG. In S51, the microcomputer 52 determines whether or not the switching valve 19 is at the drain position as shown in FIG.
Judgment is made based on the outputs from 4, 4 and if the switching valve 19 is not at the drain position, the process proceeds to S52. In S52, the microcomputer 52 outputs a signal to the motor drive circuit 53 to drive the motor 28 to rotate the switching valve 19, and thereafter returns to between S1 and S2. If the switching valve 19 is at the drain position in S51, the process proceeds to S53,
If the motor 28 is operating, the microcomputer 5
2 outputs a signal to the motor drive circuit 53 to
8 is stopped. Next, the drainage time is counted in S54, and the drainage time set in S55 is compared with the current drainage time. If the time is over, the flow advances to S56 to release the cleaning suspension mode, and returns between S1 and S2, and returns to S55. If the time is not over, return between S1 and S2. S50
If not in step S57, the flow proceeds to step S57 to judge whether or not the switching valve 19 is at the water stop position. If not, the flow proceeds to step S58 and if the motor 28 is not driven, the microcomputer 52 starts the motor. Drive circuit 5
3 to drive the motor 28, move the switching valve 19 to the water stop position shown in FIG. 4, and return between S1 and S2. If the switching valve 19 is in the water stop position in S57, the process proceeds to S59, and if the motor 28 is driven, the microcomputer 52 outputs a signal to the motor drive circuit 53 to stop driving the motor 28, and thereafter, S1 and S
Return between two.

[0012]

However, in the above-mentioned conventional structure, when the water purifier is just installed, the water supply is cut off or the currant is closed by accident, and the filter medium container 2 is closed.
When there is no water inside, when the time of the thermal cleaning operation is reached and the thermal cleaning operation is started, the heater 4 is energized in a state where there is no water in the filter medium container 2, and Has an abnormal heating state, and the filter medium container 2 is burnt.

It is also conceivable that during normal use, the water supply may be cut off or the callan may be closed. When the thermal cleaning operation starts in this state, the water that has washed the activated carbon 3 becomes
It is not released from inside the filter medium container 2. Therefore, water containing many impurities and the like remains in the filter medium container 2. Therefore, when the user uses the purified water, if the water cutoff is accidentally released or the currant is in an open state, the water containing a large amount of the above-mentioned impurities will come out of the purified water. There was a point.

An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a water purification apparatus capable of preventing a filter medium container from burning or producing purified water containing many impurities.

[0015]

In order to achieve this object, the temperature output from the temperature detecting means for detecting the temperature of the filter medium container is provided.
Temperature data obtained from the temperature signal
Compare the information with the stored information and take control based on the result.
The control means has a configuration for controlling the heating means. Especially
Specific temperature information is also stored as information stored in the memory means.
Alternatively, use the temperature rise rate. Based on the comparison results
Control means to stop energizing the heating means.
Display means to display an error message.
Was.

[0016]

[Function] The temperature detection means detects the temperature of the filter medium container.
Temperature data and memory means obtained from the input temperature signal
To the data stored in the
Control means controls the heating means.
Thus, the operation of the heating means when heating the one stored in the filter medium container can be optimized. Further, it is possible to prevent the inside of the filter medium container from being overheated. Further, based on the water temperature information signal immediately before the heating of the filter medium container by the heating means, the control means controls the heating means, thereby eliminating the need to heat the filter medium container despite the high temperature inside the filter medium container. .

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The water purifier of the present invention is applied and applied below.
A water purifier will be described as a typical example .

The external structure is the same as that shown in FIGS. The block diagram is also shown in FIG.
2 are the same as those shown in FIG. Here, especially the operation unit 4
From 1 to allow the user to enter the current time
As a result, a clock can be provided on the water purifier body 39.
Since the operation of the microcomputer 52 can be
According to the following. Therefore works
Can be accurate, reliable and highly reliable water purifier
You. In addition, a heating start time can be input from the operation unit 41.
The start time of regeneration of activated carbon 3
It can be set arbitrarily according to circumstances.
You. Furthermore, once the current time and the cleaning start time of the activated carbon 3 are set
When set, each time the cleaning and regeneration of activated carbon 3 is performed,
Even without setting the immersion, regularly and reliably activated
Since it is possible to wash and regenerate the charcoal 3, it always has excellent filtration
It can be a highly reliable water purification device with overcapacity
You. The running water pipe 7 and the connecting member 49 are connected by a tube 48.
By connecting the water purifier body 39 directly to the faucet 50
Heating the inside of the filter medium container 2 and
That the heat when performing the renewal washing of water is transmitted to the faucet 50
Can be prevented. Therefore, during the cleaning of activated carbon
The plug 50 becomes hot and the user accidentally touches it.
A safe water purifier that can prevent you from getting burned
can do. In addition, the installation position of the water purifier
You can choose freely within the reach of, for example, kitchen
Install the water purifier at a position that matches the location of the
Can be Further, the lever 51 of the connecting member 49 is turned off.
Use tap water anytime if it is raw water by changing
So that even during regeneration cleaning
Usability that water can be used freely without interruption
It can be a good water purifier.

The operation of this embodiment will be described below. When the thermal cleaning operation is performed at the time when the thermal cleaning operation is performed, the microcomputer 5 is used as described in the conventional example.
2 sends a signal to the heater drive circuit 54 to energize the heater 4 to heat the inside of the filter medium container 2. When the water purifier has just been installed, the water cut-off or the callan is closed by accident, and the water is not contained in the filter medium container 2,
It differs from the temperature rise rate when water is contained in the filter medium container 2. The microcomputer 52 stores in advance the temperature rise rate when water is contained in the filter medium container 2 as data in an internal memory. The macro computer 52
Since the temperature at the time of this heating is received as an output from the temperature detector 5, a temperature rise rate is calculated from the output,
Compare with the data stored in the memory. As described above, when no water is contained in the filter medium container 2, the temperature rise rate becomes larger than the temperature rise rate stored in the memory.
When this is detected by the microcomputer 52, a signal is sent to the heater drive circuit 54 to stop the energization of the heater 4 and to send a signal to the display unit 40 to display an error, thereby exiting from the heat washing operation.

Since the microcomputer 52 monitors the temperature rise rate in the filter medium container 2 by the output from the temperature detector 5 at the time of the thermal cleaning operation, when there is no water in the filter medium container 2, Since the microcomputer 52 can stop the energization of the heater 4, the filter medium container 2 does not burn as in the related art.

Further, during normal use (when water is contained in the filter medium container 2), there may be a case where the water is cut off or the callan is closed by accident. In this state, it is time to perform the thermal cleaning operation, and when the thermal cleaning operation starts, the filter medium container 2 is heated. In this case, since water is contained in the filter medium container 2, the temperature rise rate is smaller than the data stored in the microcomputer 52 as described above, so that no error occurs. However, the hot water in the filter medium container 2 cannot be discharged to the outside. In the normal heat cleaning operation, a heat retention mode in which the inside of the filter medium container 2 is heated with water and a drainage mode in which the hot water in the filter medium container 2 is discharged to the outside are set to be repeated a plurality of times. Therefore, in the case described above, since there is no drainage before heating, the temperature in the filter medium container 2 remains high when, for example, the second warming mode is set. Since the microcomputer 52 receives the temperature before entering the warming mode as the output from the temperature detector 5, the microcomputer 52 calculates the temperature from the output, and stores the temperature data (for example, corresponding to 60 ° C.) stored in the memory. Data). That is, the filter medium container 2 in which drainage is not performed
Is in a high temperature state, the microcomputer 52 determines the temperature in the filter medium container 2 from the output of the temperature detector 5, compares the temperature with the temperature data stored in the memory, When the temperature is higher than the temperature data stored in the microcomputer 52, the microcomputer 52 sends a signal to the heater driving circuit 54 to stop the energization of the heater 4 and further sends a signal to the display unit 40 to display an error. And exit from the thermal cleaning operation.

As described above, in this embodiment, since the microcomputer 52 monitors the temperature in the filter medium container 2 before entering the heat retention mode by the output from the temperature detector 5, the water supply is cut off and the curan is closed. And the filter media container 2
When the hot water in the inside is not discharged, the power supply to the heater 4 is stopped, an error is displayed, and the heat cleaning operation can be exited. Therefore, the water obtained by cleaning and regenerating the activated carbon 3 is not used as purified water. .

As described above, in this embodiment, the microcomputer 52 determines the temperature rise rate in the filter medium container 2 during the thermal cleaning operation and the temperature immediately after the operation based on the output from the temperature detector 5. By judging and comparing it with the data stored in the memory, it can be determined whether the water is being supplied to the water purifier body, that is, whether the water is cut off or the curan is closed. Such a problem does not occur.

The control flowchart will be described below. The control flowchart is also substantially the same as in FIGS. 13 to 19, but is different from FIGS. 14 and 18 and will be described below.

First, as shown in FIG. 1, ON / OFF of the motor 28 is controlled in S3, and the display unit 40 is controlled in S4. Next, in S5, the buttons of the operation unit 41 for water stop, water purification, hot washing, hot washing time setting, etc. are scanned. Thereafter, in S6, the current position of the switching valve 19 is changed to the switch units 33, 34, and 3.
5 by scanning the output. Up to this point, the flow is the same as the conventional flow. After S6, the process proceeds to the flowchart shown in FIG. In step S60, the error display flag is checked. If the error flag is set, the microcomputer 52 issues a signal to the display unit 40 to display an error in step S61. Then, the process returns to S7. If the error display flag has not been set in S60, the process proceeds to S62. S6
In step 2, it is determined whether or not the mode is the thermal cleaning mode. If the mode is not the thermal cleaning mode, the measurement time is reset in step S63. Then, the faucet OK flag is set in step S64, and the process returns to step S7. If it is the thermal cleaning mode in S62, the process proceeds to S65. In S65, the microcomputer 52 calculates temperature data from the output from the temperature detector 5. Next, the process proceeds to S66, and it is determined whether or not the mode is the heat retention mode. If the mode is not the heat retention mode, the process proceeds to S67, where the microcomputer 52 compares the temperature data obtained from the temperature detector 5 with the specified temperature data stored in the memory.
As a result of the comparison, if the temperature data is lower than the specified temperature data, the process proceeds to S64 and returns to S7. If the temperature data is higher than the specified temperature data, the process proceeds to S68 and the faucet O
The K flag is cleared and the process returns to S7. If the mode is the heat retention mode in S66, the process proceeds to S69 to determine whether or not the old data flag is set. The old data flag is a flag for determining whether or not temperature data is stored in the memory. S6
If the old data flag is set in step 9, the process proceeds to step S70,
The microcomputer reads the temperature data read in step 5
Stored in the memory provided in the inside. And then S
The process proceeds to step 71, where the old data flag is set, and the measurement time is counted in step S72. If the old data flag is set in S69, the process jumps between S71 and S72. Next, in S73, it is determined whether or not the measurement time has elapsed. If the measurement time has not elapsed, the faucet OK flag is set in S74, and the process returns to S7. If the measurement time has elapsed, proceed to S75 to reset the measurement time,
Next, the old data flag is cleared in S76, and the difference between the old temperature data and the new temperature data is obtained in S77. In S78, it is determined whether the temperature difference data is larger or smaller than the specified temperature difference data stored in the memory. S7 if big
At 9 the faucet OK flag is cleared and the process returns to S7. If smaller, the process proceeds to S74.

Next, FIG. 3 will be described. FIG. 3 shows FIG.
However, a flowchart described below is added between S33 and S34.

After S33, it is determined whether or not the faucet OK flag is set in S80. If the faucet OK flag is not set, the flow advances to S81 to execute the macro computer 52.
Outputs a signal to the heater drive circuit 54 to stop the power supply to the heater 4. Next, an error display flag is set in S82, the thermal cleaning mode is cleared in S83, and a water stop mode is set in S84. If the faucet OK flag is set in S80, the process proceeds to S34.

The above operation can be performed according to such a flowchart.

[0029]

According to the present invention, the temperature of the filter medium container is detected.
Temperature data obtained from the temperature signal output from the temperature detection means.
Data and the data stored in the memory means.
And the control means controls the heating means based on the result.
What is stored in the filter media container due to the configuration
Can optimize the operation of the heating means when heating
As a result, the reliability of the filter
It can be a high water purification device. Also inside the filter media container
Can be used to prevent overheating
Highly safe water purifier that is less likely to cause accidents
It can be. Further, based on the water temperature information signal immediately before the heating of the filter medium container by the heating means, the control means controls the heating means, thereby eliminating the need to heat the filter medium container despite the high temperature inside the filter medium container. Therefore, it is possible to prevent the filter medium container from burning or from producing purified water containing a large amount of impurities, and it is possible to more efficiently wash and regenerate the filter medium.

[Brief description of the drawings]

FIG. 1 is a flowchart showing the operation of a water purifier in one embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the water purifier in one embodiment of the present invention.

FIG. 3 is a flowchart showing the operation of the water purifier in one embodiment of the present invention.

FIG. 4 is a perspective view showing a conventional water purifier.

5A is a partially enlarged sectional view of a conventional water purifier. FIG. 5B is a partially enlarged view of a conventional water purifier.

FIG. 6 is a perspective view showing a conventional water purifier.

7A is a partially enlarged sectional view of a conventional water purifier. FIG. 7B is a partially enlarged view of a conventional water purifier.

FIG. 8 is a perspective view showing a conventional water purifier.

9A is a partially enlarged sectional view of a conventional water purifier. FIG. 9B is a partially enlarged view of a conventional water purifier.

FIG. 10 is an external perspective view showing a conventional water purifier.

FIG. 11 is an enlarged view showing an operation unit in a conventional water purifier.

FIG. 12 is a block diagram showing a conventional water purifier.

FIG. 13 is a flowchart showing the operation of a conventional water purifier.

FIG. 14 is a flowchart showing the operation of a conventional water purifier.

FIG. 15 is a flowchart showing the operation of a conventional water purifier.

FIG. 16 is a flowchart showing the operation of a conventional water purifier.

FIG. 17 is a flowchart showing the operation of a conventional water purifier.

FIG. 18 is a flowchart showing the operation of the conventional water purifier.

FIG. 19 is a flowchart showing the operation of a conventional water purifier.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 2 Filter medium container 3 Activated carbon 4 Heater 5 Temperature detector 6 Unit part 7 Running water pipe 8 Water pipe 10 Water pipe 11 Horizontal valve part 12 Water pipe 14 Valve part 15 Spring 16 hole 19 Switching valve 20 Groove 21 Groove 22 Groove 24 Ball 25 Ball 26 ball 27 packing 28 motor 29 worm gear 30 gear 31 gear 32 cam 33 switch section 34 switch section 35 switch section 37 heat insulating member 36 control section 38 power supply section 39 body 40 display section 41 operation section 42 operation button 43 operation button 43 operation button 45 operation button 46 operation button 48 tube 49 connecting member 51 lever 52 microcomputer 53 motor drive circuit 54 heater drive circuit

Claims (6)

(57) [Claims] 1. A filter medium container for storing a filter medium, heating means for raising the temperature of the inside of the filter medium container, an inflow pipe for introducing water into the filter medium container, and a discharge pipe for discharging water from the filter medium container . It detects the temperature of the pre-Symbol medium container, notes that a temperature detecting means for outputting a temperature signal, the predetermined information is stored
Comprising a Li means, and control means for controlling the pre-Symbol heating means,
The control means obtains the temperature signal obtained from the input temperature signal.
Temperature data and information stored in the memory means.
And comparing the results with each other to control the heating means . 2. A filter medium container for storing a filter medium, and said filter medium container.
Heating means for heating water and a flow for introducing water into the filter medium container.
An inlet pipe, a discharge pipe for discharging water from the filter medium container, and a filter.
Temperature detector that outputs a temperature signal according to the state of the material container
A stage and a memory means in which specific temperature information is stored;
Based on the input temperature signal from the temperature detecting means,
Temperature data and the temperature stored in the memory means.
Information, and controls the heating means based on the result.
A water purification device comprising a control means for controlling the water purification. 3. A filter medium container for storing a filter medium, and said filter medium container.
Heating means for heating water and a flow for introducing water into the filter medium container.
An inlet pipe, a discharge pipe for discharging water from the filter medium container, and a filter.
Temperature detector that outputs a temperature signal according to the state of the material container
Stage and memory means for storing a predetermined rate of temperature rise
And the temperature in the filter medium container based on the input temperature signal.
The temperature rise rate is calculated, and the temperature stored in the memory means is calculated.
Temperature rise rate, and comparing the calculated temperature rise rate,
Control means for controlling the heating means based on the result.
A water purification device characterized by being provided . 4. The control means is connected to the heating means based on the comparison result.
4. The method according to claim 2, wherein the energization of the power supply is stopped.
The water purification device according to item 1 . 5. An apparatus according to claim 1 , further comprising : display means for displaying an error message on said display means.
The water purification device according to claim 4, wherein a message can be displayed . 6. A filter medium container for storing a filter medium, and the filter medium container
Heating means for raising the temperature of the inside, an inflow pipe for introducing water into the filter medium container, a discharge pipe for discharging water from the filter medium container, and a temperature detection means for outputting a temperature signal according to a state in the filter medium container. If, when heating the filter medium container by the heating means, wherein while detecting the temperature rise of the filter medium in the container, wherein the filter media container of <br/> temperature said temperature sensing means immediately before heating the filter medium container A water purifier provided with control means for controlling the heating means by detecting the temperature of the water.