JPH08252570A - Water purifying system - Google Patents

Abstract

PURPOSE: To a cooled or boiling purified water or the purified water at ordinary temp. or desired temp. by providing a cooled water storing means, a boiling water storing means, a water supply means and a first control means for discharging raw water, cooled water or boiling water in accordance with the water supply command. CONSTITUTION: This water purifying system is provided with a raw water inlet 1, a cooled water tank 2, an actived-carbon filter 3, a hollow-fiber filter 4, a boiling water tank 5, a temp. control part 6 and a purified water outlet 7. Besides, an indicator is furnished, and the cooled water switch, boiling water switch, set-temp. water supply switch and ordinary-temp. switch as the specifying switches when the cooled purified water, boiling purified water, set-temp. purified water and ordinary-temp. purified water are supplied are provided. The user selects the cooled purified water, boiling purified water, set-temp. purified water or ordinary-temp. purified water indicated on the indicator and pushes the relevant switch to obtain the purified water at the desired temp. from the purified water outlet 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a water purification system,
In particular, it relates to a water purification system that supplies drinking water at a desired temperature.

[0002]

2. Description of the Related Art FIGS. 26 (A) and 26 (B) are schematic configuration diagrams of conventional cooling and boiling water purifiers, respectively.

In FIG. 26 (A), 101 is a solenoid valve for water supply, 102 is a cooling tank, 103 is an evaporator, 104 is a water purifier, 105 is a three-way valve, and 106 is a controller. In the water purifier having such a configuration, the raw water supplied through the water supply solenoid valve 101 is cooled in the cooling tank 102 to keep it at a low temperature at the time of drinking, and the cold water purified in the water purifier 104 is discharged from the jet port. And served for drinking.

Further, in FIG. 26B, 107 is a flow rate control valve, 108 is a water purifier, 109 is an intake hole, 110 is a mixer, 111 is a heat exchanger, 112 is a gas burner, 11
3 is a gas discharge port, 114 is a volatilization tank, and 115 is a solenoid valve. In the water purifier having such a configuration, after tap water continuously supplied from the water inlet is purified by the water purifier 108 including activated carbon and a hollow fiber membrane, it is heated by the heat exchanger 111 and the gas burner 112 to supply the hot water inlet. Hot water is supplied from.

[0005]

However, in the above-mentioned conventional water purifying apparatus, although either the cooling water or the heating water can be obtained, both the cooling water and the heating water are obtained from one water purifying apparatus. It was impossible.

Further, it has been impossible to obtain purified water having a temperature desired by the user.

Further, in hot water supply by the instantaneous heating method, the initial hot water temperature may fluctuate or the hot water discharge temperature may fluctuate depending on the hot water discharge amount, so that the hot water may not be optimally supplied for beverages.

Therefore, an object of the present invention is to provide cooling purified water used directly for beverages, boiling purified water used for tea, coffee, etc., and purified water at a desired temperature required for cooking, high-quality tea, milk for infants, etc. It is to provide a water purification system capable of supplying set temperature purified water) and normal temperature purified water which is the same as tap water.

[0009]

In order to solve the above-mentioned problems, the invention according to claim 1 is to store cooling water for storing cooling water obtained by cooling raw water to a set temperature, and for storing boiling water obtained by boiling raw water. Boiling water storage means, water supply input means for inputting a water supply command, and controlling the flow path in accordance with the water supply command input from the water supply input means to discharge either raw water or cooling water or boiling water 1 water discharge control means is provided.

The invention as set forth in claim 2 further comprises a raw water supply means, a cooling water storage means, a filtration means, a boiling hot water storage means,
Output means for outputting various kinds of water, raw water supply means, cooling water storage means, filtration means, boiling water storage means and output means for connecting the raw water or cooling water or boiling purified water or cooling purified water or set temperature purified water or room temperature purified water Transporting means for transporting, and a flow path switching means provided in the transporting means for switching the flow paths of various water, and any of the raw water, cooling water, boiling purified water, cooling purified water, set temperature purified water or room temperature purified water Output instructing means capable of selectively instructing output,
And a flow path switching control means for switching the flow path switching means in response to an instruction from the output instructing means.

Further, the invention according to claim 3 is a cooling water storage means for storing cooling water obtained by cooling raw water to a set temperature, a boiling water storage means for storing boiling water obtained by boiling raw water, cooling water and boiling. Mixing means for mixing water, water supply command input means for inputting a water supply command, and controlling the amount of cooling water and boiling water to the mixing means according to the water supply command input from the water supply input means Second water temperature is discharged
And a water discharge control means.

Further, the invention according to claim 4 is characterized by comprising a filtering means for filtering raw water.

The invention according to claim 5 is characterized in that the drainage of the cooling water is caused to flow through the filtering means.

The invention according to claim 6 is characterized in that the drainage of boiling water is caused to flow through the filtering means.

Further, the invention according to claim 7 is characterized by comprising clogging state detecting means for detecting the clogging state of the filtering means.

Further, the invention according to claim 8 is characterized by comprising a replacement timing notifying means for notifying the replacement timing of the filtering means.

The invention according to claim 9 is characterized by comprising an ice maker for making ice and overflow water draining means for draining water overflowing from the ice maker.

[0018]

According to the invention described in claim 1, either raw water, cooling water or boiling water can be discharged through the first water discharge control means in accordance with an instruction from the water supply input means.

According to the second aspect of the present invention, when cooling purified water is desired, when the output instructing means is instructed to the effect that cooling purified water is desired, the flow path switching control means is controlled according to the instruction. The flow path switching means is switched below, and the cooling water stored in the cooling water storage means is filtered by the filtering means to be cooling purified water,
The cooling purified water is output from the output means. When boiling purified water is desired, when an instruction to the effect that boiling purified water is desired is given to the output instructing means, the flow path switching means is switched under the control of the flow path switching control means according to the instruction, and the raw water is filtered by the filtering means. It is filtered to make purified water, and the purified water is made into boiling water by means of boiling water storage means. The boiling water is output from the output means. When room temperature purified water is desired, when the instruction indicating that the room temperature purified water is desired is given to the output instructing means, the flow path switching means is switched under the control of the flow path switching control means according to the instruction, and the raw water is filtered by the filtering means. The water is filtered to produce purified water, and the purified water is output from the output means. When the set temperature purified water of the desired temperature is desired, when the instruction indicating that the purified water of the desired temperature is desired is issued to the output instructing means, the flow passage switching means is controlled under the control of the flow passage switching control means according to the instruction. After switching, the mixing means mixes the cooling purified water and the boiling purified water, and outputs the purified water having the desired temperature from the output means.

Further, according to the third aspect of the invention, water at an arbitrary temperature can be discharged through the mixing means, the second water discharge control means and the like according to an instruction from the water supply input means.

Further, according to the invention of claim 4, it is possible to obtain cooling purified water, boiling purified water, and room temperature purified water obtained by filtering raw water.

Further, according to the fifth and sixth aspects of the invention, the drainage of the cooling water is subjected to heat-sensitive filtering means (for example,
In the case of a filter means (for example, activated carbon filter) in which the hollow fiber membrane filter) is washed by backflowing, and heated and regenerated, boiling water is drained and heated to regenerate the filter means. By doing so, it is possible to effectively use the wastewater that should be discarded, and prevent waste of resources.

According to the seventh and eighth aspects of the present invention, the clogging state of the filtering means is detected by the clogging state detecting means, and the replacement timing notifying means notifies the replacement timing. The administrator of the can easily replace the filtering means and can always operate the device in an appropriate state.

According to the invention of claim 9, a certain amount of purified water for ice making is supplied to the ice making tray, and the water overflowing from the ice making tray is drained as it is, so that the ice making tray is attacked by various bacteria. There is no fear.

[0025]

The present invention will be described below with reference to the illustrated embodiments.

In each of the following embodiments, since the system configuration of the water purification system is the same, first, the configuration of the water purification system used in each example will be described with reference to FIG. Here, the numbers indicate constituent members, and the alphabets indicate flow paths.

In FIG. 1, reference numeral 1 shown in the upper left part of the figure denotes a raw water (tap water) inlet, 2 a cooling water tank, 3 an activated carbon filter, 4 a hollow fiber membrane filter, 5 a boiling water tank, and 6
Is a temperature control unit, 7 is a purified water outlet, 8 is a compressor shown on the left side of the figure, 9 is a condenser, 10 is a three-way valve at the upper left,
11 in the upper right is a 4-way valve, 12 in the upper left is a 3-way valve, 13 in the right is a 3-way valve, 14 in the center is a hot water prevention solenoid valve, 15,
Reference numeral 16 is a solenoid valve for draining water, left and right 19 and 20 are pumps, 21, 22, 24 and 25 in the tanks 2 and 5 are water level sensors, 23 and 26 are temperature sensors, and 27 is a steam vent.

Further, the water purification system is provided with a display device 38 shown in FIG. As shown in FIG. 2, the display device 38 has a cooling water switch 38a, a boiling water switch 38b, and a set temperature, which are designated switches for supplying cooling purified water, boiling purified water, set temperature purified water, and room temperature purified water, respectively. A water supply switch 38c, a room temperature water supply switch 38d, and a temperature setting switch 38e in the case of setting temperature purified water, and a light emitting diode (LED) 38f, 3 for displaying a warning and a temperature, such as during filter replacement, boiling, cooling, or filter cleaning.
8g etc. are arranged.

The user selects one of four types of purified water, that is, the purified water for cooling, the purified water for boiling, the purified water for temperature setting, and the purified water at room temperature, which are displayed on the display device 38, according to the desired purified water temperature, and the corresponding switch. By pressing, purified water having a desired temperature can be obtained from the purified water outlet 7 (see FIG. 1).

(1) First Embodiment This embodiment is mainly for supplying cooling purified water and boiling purified water, and the normal temperature purified water mode, cooling water supplement mode, and boiling water supplement mode will be described.

Cooling Water Purification Mode FIG. 3 is a flow chart of the cooling water purification mode in the cooling water purification mode.
(A), (B) is a flowchart figure of control in a cooling water purification mode, and a flowchart figure of a flow path, respectively.

As shown in FIGS. 3 and 4A, when the cooling water switch 38a is turned on to select the cooling water (step S1), the drainage solenoid valves 15 and 16 are closed and the four-way valve 1
The flow path of No. 1 is switched from D to E (step S2), the hot water prevention solenoid valve 14 is opened (step S3), the flow path of the three-way valve 12 is switched from H to I (step S4), and the pump 19
Is activated (step S5).

Then, as shown in FIG. 4B, the raw water stored in the cooling water tank 2 passes through the flow paths H → I (steps S11 to S13) and the activated carbon filter 3 (step S14). ), Passing through the flow paths N → O (steps S15 and S16), passing through the hollow fiber membrane filter 4 (step S17), and passing through the flow paths D → E (steps S18 and S19), the cooling purified water is purified. Water is discharged from the outlet 7 (step S20).

After step S5, the time is monitored in step S6, and the pump 19 is stopped after a certain period of time has passed (step S7), and the output of purified water is stopped. After this,
When the cooling water switch 38a is turned on again, cooling purified water is discharged, and when it is not turned on, the valve 1
1, 12, 14 are closed (step S8), and the cooling water purification mode ends.

Boiling water purification mode FIG. 5 is a flow chart of boiling water purification mode in boiling water purification mode.
(A) and (B) are the flowchart figure of control in a boiling water purification mode, and the flowchart figure of a flow path.

As shown in FIG. 6A, when the boiling water switch 38b is turned on (step S21), the flow path of the three-way valve 13 is switched from K to L (step S22), and the pump 2
0 is activated (step S23). By this control, as shown in FIG. 6 (B), the boiling purified water stored in the boiling water tank 5 passes through the flow path K → L and is discharged from the purified water outlet 7 (steps S31 to S34).

Following the step S23, the pump 20 is stopped after a certain time has elapsed (steps S24, S
25), stop the flushing of purified water. After that, when the boiling water switch 38b is turned on again, boiling purified water is discharged, and when not turned on, the valve 13 is closed after a lapse of a certain time (step S26), and the boiling purified water mode is ended.

Normal temperature water purification mode In normal temperature water purification mode (flowchart not shown), 4
By switching the flow path of the one-way valve 11 from D to E, opening the hot water prevention solenoid valve 14 and switching the flow path of the three-way valve 10 from A to C, the raw water passes through the flow paths A to C and the activated carbon is activated. Filter 3
Through the channel N → O, the hollow fiber membrane filter 4, the channel D → E, and purified water having the same temperature as tap water can be discharged from the purified water outlet 7.

In this case, the water may be discharged only while the user keeps pressing the room temperature water purification switch 38d, or after a certain period of time, at least one of the valves 10, 11 and 14 is turned on. The water may be stopped by closing.

Cooling Water Replenishing Mode After the cooling water purification mode and the temperature setting water supply mode to be described later are finished, the raw water in the cooling water tank 2 becomes the water level sensor 2.
When it becomes 2 or less, the cooling water replenishing mode is set. The water purification system is the same as in FIG.

7 (A) and 7 (B) are a flow chart for controlling the cooling water replenishing mode and a flow chart for the flow path, respectively.

In FIGS. 7A and 7B, when the raw water in the cooling water tank 2 reaches the water level sensor 22 or below (step S41), the flow path of the three-way valve 10 is switched from A to B ( Step S42). By this control, raw water is passed through the flow path A.
-> B is passed and it supplies to the cooling water tank 2 (step S51-step S54).

By the control in step S42, when the raw water in the cooling tank 2 increases and reaches the water level sensor 21 (step S43), the three-way valve 10 is closed and the supply of raw water is stopped (step S44). After the supply of the raw water is stopped, the temperature of the cooling water is detected by the temperature sensor 23 in the cooling water tank 2, and if it is equal to or higher than the drinking temperature (for example, around 5 ° C.), the compressor 8 is operated (step S45),
The raw water is cooled to the set temperature or lower, and when it reaches the set temperature or lower (step S46), the compressor 8 is stopped (step S47), and the cooling water replenishing mode is ended.

Even in a mode other than the cooling water replenishing mode described above, the temperature sensor 23 constantly monitors the temperature of the raw water in the cooling water tank 2 and operates the compressor 8 so that the cooling water is always below the set temperature. Then, the temperature in the cooling water tank 2 is controlled.

Boiling Water Replenishing Mode After the boiling water purification mode and the temperature setting water supply mode to be described later are finished, the purified water in the boiling water tank 5 becomes the water level sensor 25.
When it becomes the following, it becomes a boiling water replenishment mode.

FIG. 8 is a flow chart of the boiling purified water replenishing mode, and FIGS. 9 and 10 are a flow chart of control of the boiling water supplementing mode and a flow chart of the flow passage, respectively.

As shown in FIGS. 8 and 9, when the purified water in the boiling water tank 5 reaches the water level sensor 25 or below (step S61), the drainage solenoid valves 15 and 16 are closed, and the flow of the four-way valve 11 is closed. The path is switched from D to F (step S62), the hot water prevention solenoid valve 14 is opened (step S63), and the flow path of the three-way valve 10 is switched from A to C (step S64).

Then, as shown in FIG. 8 and FIG.
Raw water passes through the flow paths A → C (steps S81, S82, S
83) and passes through the activated carbon filter 3 (step S8).
4), passing through the flow path N → O (steps S85, S
86) and passes through the hollow fiber membrane filter 4 (step S8).
7) Passes through the flow path D → F (steps S88, S
89), and the purified water is supplied into the boiling water tank 5 (step S90).

By supplying this boiling water, as shown in FIGS.
As shown in, the purified water in the boiling water tank 5 is the water level sensor 2
4 (step S65), at least one of the 4-way valve 11, the hot water prevention solenoid valve 14, and the 3-way valve 10
Close one to stop the supply of purified water (steps S66 to S68). After the supply of the purified water is stopped, the temperature of the purified water is detected by the temperature sensor 26 in the boiling water tank 5, and when the temperature is equal to or lower than the drinking temperature (for example, around 98 ° C.), the boiling heater 35 is operated (step S69), when the purified water is heated to the boiling point and reaches the set temperature or higher (step S
70), and the heater 35 for boiling is stopped (step S7).
1) End the boiling water replenishment mode.

Even in a mode other than the boiling water replenishing mode described above, the temperature sensor 26 constantly monitors the temperature of the purified water in the boiling water tank 5 so that the boiling water is always above the set temperature. To control the temperature in the boiling water tank 5.

FIG. 11 shows the open / closed state of each valve in the cooling water purification mode, the boiling water purification mode, the temperature setting water supply mode, which will be described later, the room temperature water supply mode, the cooling water supplement mode, and the boiling water supplement mode.

As described above, it is possible not only to supply chilled purified water suitable for making beverages as it is or boiling purified water suitable for beverages such as tea and coffee, but also to cool it before filtering. As a result, chlorine can suppress the growth of various bacteria in the cooling water, and it is possible to provide safe cooling water from which chlorinated odors, musty odors, dust, and other bacteria have been removed when water is discharged.

(2) Second Embodiment This embodiment is to provide purified water at any temperature desired by the user, which is necessary for cooking, high-grade tea, milk for infants, and the like.

Set temperature water purification mode FIG. 12 is a flow chart of purified water in the set temperature water purification mode, FIG. 13 is a control flow chart diagram, FIG. 14 is a flow chart flow chart diagram, and FIG. 15 is a temperature control flow chart. It is a flowchart figure.

As shown in FIGS. 12 to 14, when the user turns on the set temperature water supply switch 38c, the temperature setting water supply mode is set (step S91). Then, steps S92 to S99 (see FIG. 13) and step S
101 to step S111 (see FIG. 14),
The cooling water purification mode and the boiling water purification mode are simultaneously performed respectively, and the temperature is adjusted by the temperature adjusting unit 6 so as to reach the set temperature. Here, the steps S92 to S99.
And step S101 to step S111 are the cooling water purification mode (step S1 to step S8 of FIG. 4A and step S11 to step S20 of FIG. 4B) and the boiling water purification mode (FIG. 6A), respectively. Step S2
2 to step S26 and step S31 of FIG.
Up to step S34), duplicate description will be omitted.

Next, a block diagram of the above temperature control is shown in FIG.
6 is shown.

In FIG. 16, E is the flow path of cooling purified water, and L is
Is a flow path of boiling purified water, 36 is a pump pressure control means, 37 is a microcomputer, 38 is a display device (see FIG. 2), 44 is a pump pressure control means, 45 is a motor control means, 46 is a stepping motor, 47 is a thermistor, 48 is a flow control valve.

Set temperature water supply switch 38 of display device 38
Pressing c selects the set temperature water supply mode. Then
As shown in FIG. 15, the water supply operation is performed by changing the rotational speed (pump pressure) of the pump 19 and the pump 20 in response to a command from the microcomputer 37 with respect to the user's set temperature (step S122, S122, Step S123).
For example, when the user sets 67 ° C., the ratio of the pump pressure (rotation speed) between the cooling water purification pump 19 and the boiling water purification pump 20 is set to 1: 2 so that the water supply amount is close to the preset temperature. Instead, the pump 19 and the pump 20 are simultaneously operated to supply cooling water and boiling water at the same time (step S1).
24).

When the cooling water and the boiling water are mixed, about 67 ° C.
Although the water will be purified to a certain degree, the temperature of boiling water will drop and the temperature of cooling water will rise in the passage, so final fine adjustment is performed with a thermistor located in front of the purified water outlet 7 to detect the water temperature. Then, the position of the flow rate control valve 48 is changed using the stepping motor 46 via the microcomputer 37, and the temperature is finely adjusted to the set temperature (step S126).

In FIG. 16, the thermistor 47 → the microcomputer 3
7 → motor control means 45 → stepping motor 46 → controls by forming a control loop of the flow rate control valve 48. The motor control means 45 has a temperature comparison function performed by the microcomputer 37, and the microcomputer 37 sets the temperature. The same effect can be obtained even if only the temperature command is issued and control is performed by a loop of the thermistor 47 → motor control means 45 → stepping motor 46 → flow rate control valve 48.

As described above, it is possible to provide purified water at any temperature desired by the user, which is necessary for cooking, high-grade tea, baby milk, and the like.

Further, in the temperature setting purified water, the rotational speed of the motor attached to the tank is controlled so that the temperature becomes a preset temperature, and fine adjustment is made at the purified water outlet, so that the temperature instability at the beginning of water discharge can be prevented. It is possible to provide the purified water at the set temperature from the start of the water discharge, and by changing the pump pressures of the cooling water pump and the boiling water pump while comparing them, it becomes possible to perform the set temperature control and the hot water discharge amount control at the same time.

(3) Third Embodiment In FIG. 1, check valves 17 and 18 and a flow meter 34 are used in this embodiment.

The main points of this embodiment are as follows. That is,
Conventionally, when the activated carbon is regenerated, a heating heater for regeneration is used under the activated carbon to perform heating regeneration, and to wash the hollow fiber membrane, tap water is newly used for washing. However, from the viewpoint of resource saving, it is not preferable to use a heater or new tap water for the regeneration and cleaning.

Therefore, in this embodiment, the hollow fiber membrane filter is cleaned by reusing the waste water that should be discarded. That is, although the raw water in the cooling water tank 2 contains chlorine for preventing the propagation of various bacteria, its effect is diminished with the passage of time, and conversely the various bacteria gradually propagate. For this reason, the cooling water after a certain period of time is drained, and the hollow fiber membrane filter 4 is cleaned by using the drainage during this draining operation.

Cleaning of Hollow Fiber Membrane Filter FIG. 17 shows a flow path in the regeneration and cleaning mode of the hollow fiber membrane filter 4, and FIGS. 18 and 19 show drainage / cleaning mode in cleaning the hollow fiber membrane filter 4, respectively. It is a flowchart figure of control and a flowchart figure of a channel.

In FIG. 18, after a certain period of time has passed from the previous drainage / cleaning mode, or when the set flow rate is reached by monitoring the cumulative amount of water passing through the flow meter 34, or the pump 19 is kept at a constant pressure (rotation speed). When the filter clogging condition is detected from the flow rate when passing through the activated carbon filter 3 and the hollow fiber membrane filter 4 and it is determined that filter cleaning / regeneration is necessary (steps S131 to S133), the three-way valve 12 Switching the flow path from H to J (step S134),
The drainage solenoid valve 16 is switched from 4 to Q (step S13
5) The valves 14 and 11 are closed.

Thereafter, as shown in FIG. 19, the raw water in the cooling water tank 2 is pumped (step S15).
1) Pass through the flow paths H → J (steps S152 and S153), reversely flow the hollow fiber membrane filter 4 (step S154), and remove dust and the like clogged in the pores of the hollow fiber membrane filter 4 together with the raw water. Flow to Q (step S155). The raw water that has flowed through the flow path Q passes through the trap U, reaches the drain port 33, and is drained (steps S156 and S157).

Here, as the amount of drainage / washing, until the raw water in the cooling water tank 2 is completely drained, for example, a certain period of time has passed after passing through the water level sensor 22, or the load of the pump 19 is set, for example. The pump 19 drains and cleans until it is monitored and has a light load (steps S137 to S141). After the drainage / cleaning is completed, the cooling water replenishment mode (see the first embodiment) is processed (step S14).
2), the cleaning mode of the hollow fiber membrane filter ends.

Regeneration of Activated Carbon Filter FIGS. 20 and 21 are a control flowchart and a flow channel flowchart when regenerating and heating the activated carbon filter 3 which is the other filtering means. The flow path diagram for the regeneration of the activated carbon filter is shown in FIG.
To use.

In FIG. 20, after a certain period of time has passed from the previous regeneration mode, or when the set flow rate is reached by monitoring the cumulative amount of water passing through the flow meter 34, or by the pump 19
When it is determined that filter cleaning / regeneration is necessary by detecting the clogging degree of the filter from the flow rate when passing through the activated carbon filter 3 and the hollow-vision membrane filter 4 at a constant pressure (rotation speed) (steps S161 to S163). ), The flow path of the three-way valve 13 is switched from K to M according to the drainage of the cooling water (step S164), the drainage solenoid valve 15 is switched from 3 to P (step S165), and the valve 14 and the valve are connected. 12 is closed.

After that, the boiling water in the boiling water tank 5 is pumped using the pump 20 (step S166 in FIG. 20), and the flow passage K is obtained.
→ M is passed (step S181 to step S183 in FIG. 21) and flowed to the activated carbon filter 3 (step S18
4) The adsorbate adsorbed on the activated carbon filter 3 by the boiling water is caused to flow in the flow path P together with the boiling water (step S185). The boiling water flowing through the flow path P passes through the trap U (step S186), reaches the drain port 33, and is drained (step S187).

Then, until the boiling water in the boiling water tank 5 is completely drained, or a sufficient amount of boiling water for regeneration and heating is flown using the pump 20, and the regeneration is finished (steps S167 to S171). After the regeneration, the boiling water replenishment mode (see the first embodiment) is processed (step S172), and the activated carbon filter regeneration mode is terminated.

As described above, the existing cooling water and boiling water for water supply and oil supply are used without using a specially prepared means for regenerating the activated carbon and washing the hollow fiber membrane, which is a filtering means. As a result, activated carbon can be regenerated and hollow fiber membranes can be washed.Because a dedicated heating motor is not used, the filtration means can be downsized and the cost can be reduced, and unnecessary use of tap water for washing can be avoided. It is possible to hold it down.

(4) Fourth Embodiment The filter needs to be replaced because it becomes dirty when the number of times of use is accumulated.

Conventionally, the user is urged to replace the filter by the cumulative amount of purified water or the cumulative operating time, but the clogging degree of the filtering means varies greatly depending on the degree of contamination of raw water (tap water). Judging the filter by the accumulated time or the accumulated filtered water amount, regardless of the contamination of the raw water, when the raw water is very dirty, the filtering means is clogged.
If there is no indication to replace the filter, or if the raw water is very clean, the filter is not clogged and the indication to replace the filter appears even though the filter is still sufficiently filterable.

The present embodiment eliminates the above-mentioned absurdity and appropriately prompts the user to replace the filter regardless of the operating time and the amount of filtered water.

FIG. 22 is a control block diagram of this embodiment, and FIG. 23 is a waveform diagram of pump pressure and output of the flow rate detecting means.

In FIG. 22, the activated carbon filter 3 and the hollow fiber membrane filter 4 are combined to form filtering means 3 and 4, and 36
Is a pump pressure (rotation speed) control means for the pump 19, 37 is a microcomputer, and 38 is a display device (see FIG. 2).

Next, the operation will be described.

In FIG. 22 and FIG. 23, cooling purified water,
After continuing the purified water discharge mode of boiling purified water, set temperature purified water, and room temperature purified water for a certain period of time, or when the flow rate meter 34 calculates an integrated flow rate that passes through the filter and exceeds a certain fixed value,
Activate the jam detection mode.

In the clogging detection mode, the pump 19 in the cooling water tank 2 is operated at a constant pressure (constant speed). By detecting the flow rate and flow velocity of the purified water that has passed through the filtering means 3 and 4 at this time, the current clogging state of the filtering means 3 and 4 is detected and output to the microcomputer 37.

Since the degree of clogging of the filtering means 3 and 4 increases in accordance with the amount of filtered water, the output value of the flow meter 34 in the clogging detection mode decreases as the amount of filtered water used increases, as shown in FIG. To go. When the output of the flow meter 34 in the clogging detection mode becomes less than or equal to a preset filter replacement set value, a signal is sent from the microcomputer 37 to the display device 38 to display a message prompting the user to replace the filter.

Further, when the clogging state of the filtering means is detected,
The pump pressure (rotation speed) of the pump 19 is increased according to the clogging state, and the clogging state of the filtering means is related until the replacement of the filtration means becomes necessary and as long as the pump pressure (rotation speed) of the pump 19 is increased. Instead, always discharge a certain amount of water.

Since the clogging degree of the filter is directly detected by the above configuration and operation, it is possible to appropriately prompt the user to replace the filter regardless of the operation time and the amount of filtered water.

Further, there is a problem that the clogging of the filtering means also increases and the amount of water output gradually decreases as the amount of filtered water increases. It is possible to discharge a certain amount of cooling purified water.

(5) Fifth Embodiment This embodiment is a case of producing ice using purified water (purified ice).

FIG. 24 is a flow path according to this embodiment, and FIG. 25 (A) is a perspective view of the ice tray 29 and the drainage flow path T.
(B) is a top view of the ice tray 29, (C) is a perspective view of the inclined state of the drainage channel of the ice tray.

In FIG. 24, 28 is an ice making machine, 29 is an ice making tray, 30 is an ice removing motor, 31 is an ice box, 3
2 is a heater.

Next, the operation will be described.

Coolant compressor 8 and condenser 9
Is used to make ice. When there is not enough purified water in the ice box 31 and the ice tray 29 becomes empty, the ice making water supply mode is set.

In the ice making water supply mode, the drainage solenoid valve 1 is used.
With the valves 5 and 16 closed, the flow path of the 4-way valve 11 is switched from D to G, the hot water prevention solenoid valve 14 is opened, the flow path of the 3-way valve 12 is switched from H to I, and the pump 19 is started. By doing so, the raw water stored in the cooling water tank 2 passes through the flow paths H → I, the activated carbon filter 3, and the flow path N → O,
Cooling purified water is supplied to the ice tray 29 through the hollow fiber membrane filter 4 and the flow path D → G.

Here, as described in the third embodiment, since the clogging state of the activated carbon filter 3 and the hollow fiber membrane filter 4 can be grasped at all times, the pump pressure and the operating time of the pump 19 can be set to any value. So how much ice tray 29
Knowing if it can be supplied to. Therefore, the pump 19
Ice tray 2 by controlling the pump pressure and operating time of
It becomes possible to supply a certain amount of cooling purified water to the 9.

Further, the ice tray 29 is shown in FIG.
As shown in (C), a drainage groove 41 is formed around it, and even if the amount of cooling purified water supplied to the ice tray 29 is too large, the cooling purified water overflowing from the ice tray 29 is guided to the drainage channel T. Therefore, it is possible to prevent excess cooling water from overflowing from the ice tray 29 from solidifying the individual ice stored in the ice box 31, and also to prevent single ice formation on the ice tray 29.

Further, a drainage port 42 is provided at one location of the drainage channel 41, the drainage channel 41 is inclined so that the drainage port 42 is the lowest, and the drainage port 42 is provided above the inlet 43 of the drainage channel T. Position. The diameter of the inlet 43 of the drainage channel T is made larger than the diameter of the drainage port 42 so that the drainage from the drainage port 42 is guided to the drainage channel T without leaking.

The rotation direction at the time of ice removal is shown in FIG.
The direction of the arrow shown in FIG. 2 prevents the drain port 42 and the inlet 43 from coming into contact with each other.

An ice-making temperature sensor 39 is attached to the lower rear surface of the ice tray 29, and when the cooling purified water in the ice tray 29 becomes sufficiently iced, the ice removing motor is operated and the ice tray 2 is cooled.
Rotate 9 (see FIG. 25 (A)), and ice box 3
1) Remove ice and store ice. The ice box 31 is provided with ice detecting means 40, and ice making is continued until the ice detecting means 40 comes into contact with the ice.

Further, in order to prevent the water drained in the drainage channel T in the ice maker 28 from freezing, a heater 32 for preventing freezing is provided, and in the ice making water supply mode or at regular time intervals. Alternatively, when the compressor 8 and the condenser 9 are defrosted, the heater 32 performs an operation of melting the frozen ice in the pipe flow path T.

By doing so, it becomes possible to provide the purified water ice which cannot be realized by the conventional ice maker installed in the refrigerator or the like.

Further, in the conventional ice maker, when the ice is not used for a long period of time, there is a problem that various bacteria propagate in the water supply tank or the fixed amount container, mold is generated, or slime is generated. However, due to the above configuration and action, the cooling water that has passed a certain time is drained, and since it is filtered immediately before supplying the purified water for ice making, various bacteria propagate, mold develops, or slime occurs. Not only is it possible to provide safe purified water that does not need to be cooled, but it is also possible to supply a certain amount of cooling water to the ice tray without using a fixed quantity water supply tray that supplies a fixed amount to the ice tray. It will be possible.

Further, since a drainage groove is provided in the ice tray to drain excess water, it is possible to prevent the produced ice from becoming one piece of ice, and when the amount of cooling purified water supplied to the ice tray 29 is too large. However, it is also possible to guide the cooling purified water overflowing from the ice tray 29 to the drainage channel T, prevent the individual ice stored in the ice box 31 from being solidified, and always make the cubic purified water ice. .

[0102]

As described above, according to the invention of claim 1, since the cooling water storage means, the boiling water storage means, the water supply input command means, and the first water discharge control means are provided, the water supply input command is provided. Raw water, cooling water, or boiling water can be obtained through the first water discharge control means or the like if instructed by the means.

According to the second aspect of the invention, the raw water supply means, the cooling water storage means, the filtration means, the boiling hot water storage means, the output means, the raw water supply means, the cooling water storage means and the filtration means. Conveying means for conveying raw water or cooling water connecting the boiling hot water storage means and output means, flow path switching means for switching various water flow paths, and selecting either output of the raw water or cooling water An output instructing means capable of instructing, a flow path switching control means for switching the flow path switching means in response to an input from the output instructing means, and a mixing means for mixing cooling purified water and boiling purified water to a desired temperature. Therefore, if desired purified water is input to the output instructing means, cooling purified water, boiling purified water, normal temperature purified water, and preset temperature purified water having a desired temperature can be obtained.

According to the third aspect of the present invention, since the cooling water storage means, the boiling water storage means, the mixing means, the water supply input command means, and the second water discharge control means are provided, the water supply input command is provided. If instructed by the means, water having a desired temperature can be obtained through the second water discharge control means or the like.

Further, according to the invention as set forth in claim 4, since the filtering means is provided, it is possible to obtain any of the cooling purified water, the boiling purified water, the room temperature purified water and the preset temperature purified water of the desired temperature.

According to the fifth and sixth aspects of the invention, the drainage of the cooling water is used for cleaning the filtering means, and the drainage of the boiling water is used for regenerating the filtering means. In the case of filtration means (eg, activated carbon filter) that recycles the drainage of cooling water by backflowing through a heat-sensitive filtration means (eg, hollow fiber membrane filter), and heating and regeneration, heat by draining boiling water. To regenerate the filtration means.
By doing so, it is possible to effectively use the wastewater that should be discarded, and prevent waste of resources.

According to the seventh and eighth aspects of the present invention, the clogging state of the filtering means is detected by the clogging state detecting means, and the replacement timing is notified by the replacement timing notifying means. The administrator of the can easily replace the filtering means and can always operate the device in an appropriate state.

According to the ninth aspect of the present invention, a certain amount of purified water for ice making is supplied to the ice making tray, and the water overflowing from the ice making tray is drained as it is, so that the ice making tray is invaded by various bacteria. There is no fear.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of a water purification system used in the present invention.

FIG. 2 is a diagram showing a display device of the water purification system shown in FIG.

FIG. 3 is a diagram showing a flow path of cooling purified water in the first embodiment of the present invention.

FIG. 4 is a flow chart diagram of a cooling water purification mode in the first embodiment, (A) is a control flow chart diagram, and (B) is a flow channel flow chart diagram.

FIG. 5 is a view showing a flow path of boiling purified water in the first embodiment.

FIG. 6 is a flow chart diagram of a boiling water purification mode in the first embodiment, (A) is a control flow chart diagram, and (B) is a flow channel flow chart diagram.

FIG. 7 is a flow chart diagram of a cooling water replenishing mode in the first embodiment, (A) is a control flow chart diagram, and (B) is a flow channel flow chart diagram.

FIG. 8 is a view showing a flow path in a boiling water replenishment mode in the first embodiment.

FIG. 9 is a flowchart of control of a boiling water replenishment mode in the first embodiment.

FIG. 10 is a flowchart of a flow path in a boiling water replenishment mode according to the first embodiment.

FIG. 11 is a table showing the open / closed states of the valves in the first and second embodiments.

FIG. 12 is a view showing a flow path of water for supplying water at a preset temperature in the second embodiment.

FIG. 13 is a flowchart of control in a preset temperature water supply mode in the second embodiment.

FIG. 14 is a flowchart of a flow path in a preset temperature water supply mode according to the second embodiment.

FIG. 15 is a flowchart of temperature control in a preset temperature water supply mode according to the second embodiment.

FIG. 16 is a block diagram showing control of set temperature water supply in the second embodiment.

FIG. 17 is a flow path diagram of a hollow fiber membrane cleaning mode and an activated carbon regeneration mode in the third embodiment.

FIG. 18 is a flowchart of control of a hollow fiber membrane cleaning mode in the third embodiment.

FIG. 19 is a flow chart of a flow path in a hollow fiber membrane cleaning mode in the third embodiment.

FIG. 20 is a flow chart of control in activated carbon regeneration mode in the third embodiment.

FIG. 21 is a flowchart of a flow path in activated carbon regeneration mode according to the third embodiment.

FIG. 22 is a block diagram showing control of a clogging detection mode in the fourth embodiment.

FIG. 23 is a waveform diagram of the flow meter output and pump pressure control in the clogging detection mode in the fourth embodiment.

FIG. 24 is a flow path diagram of an ice making water supply mode in a fifth embodiment.

FIG. 25 is a diagram showing an ice tray in the fifth embodiment, (A) is a perspective view, (B) is a top view, and (C) is a perspective view showing the inclination of the ice tray.

FIG. 26A is a schematic configuration diagram of a conventional cooling purified water supply device, and FIG. 26B is a schematic configuration diagram of a conventional heated purified water supply device.

[Explanation of symbols]

 1 Raw Water Inlet 2 Cooling Water Tank 3 Activated Carbon Filter 4 Hollow Fiber Membrane Filter 5 Boiling Water Tank 6 Temperature Control Section 7 Clean Water Outlet 8 Compressor 9 Condenser 10, 12, 13 3 Way Valve 11 4 Way Valve 14 Hot Water Prevention Solenoid Valve 15 , 16 Drainage solenoid valve 19, 20 Pump 21, 22, 24, 25 Water level sensor 23, 26 Temperature sensor 27 Vapor vent 28 Ice maker 29 Ice tray

Continuation of front page (72) Inventor Takaho Narita 8 Shinsugita-cho, Isogo-ku, Yokohama-shi, Kanagawa, Ltd.

Claims (9)

[Claims] 1. A cooling water storage means for storing cooling water obtained by cooling raw water to a set temperature, a boiling water storage means for storing boiling water obtained by boiling raw water, a water supply input means for inputting a water supply command, and the water supply. A water purification system comprising: a first water discharge control unit that controls a flow path according to a water supply command input from an input unit to discharge either raw water, cooling water, or boiling water. 2. Raw water supply means, cooling water storage means, filtration means, boiling hot water storage means, output means for outputting various kinds of water, said raw water supply means, cooling water storage means, filtration means, boiling hot water storage means and output Conveying means for conveying raw water, cooling water, boiling purified water, cooling purified water, set temperature purified water, or room temperature purified water, which is connected to the means, and a passage switching means provided in the conveying means for switching various water passages An output instructing means capable of selectively instructing an output of the raw water, the cooling water, the boiling purified water, the cooling purified water, the set temperature purified water, or the room temperature purified water, and the flow path switching means according to the instruction from the output instructing means. And a flow path switching control means for switching the water storage system. 3. A cooling water storage means for storing cooling water obtained by cooling raw water to a set temperature, a boiling water storage means for storing boiling water obtained by boiling raw water, and a mixing means for mixing cooling water and boiling water. A water supply command input means for inputting a water supply command, and a second for controlling the amount of cooling water and boiling water to the mixing means according to the water supply command input from the water supply input means, and for discharging water of the water supply temperature A water purification system comprising a water discharge control means. 4. The water purification system according to claim 1 or 2, further comprising a filtering means for filtering raw water. 5. The water purification system according to claim 1, wherein drainage of cooling water is caused to flow through the filtering means. 6. The water purification system according to claim 1, wherein the drainage of boiling water is caused to flow through the filtering means. 7. The water purification system according to claim 1, further comprising a clogging state detecting means for detecting a clogging state of the filtering means. 8. The water purification system according to any one of claims 1 to 7, further comprising a replacement timing notifying unit for notifying a replacement timing of the filtering unit. 9. The water purification system according to claim 1, further comprising an ice maker for making ice and overflow water drainage means for draining water overflowing from the ice maker.