JPH10290907A - Circulating purifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain the purifying capacity of a purifying cartridge over a long period of time without the purifying cartridge clogged by large refuse when a filter detecting means detects the non-loading of a filter by performing control so that a flow passage switching means switches a flow passage to the bypass side. SOLUTION: When a prefilter 23 is removed from a water supply unit 13 in order for a user to clean the prefilter 23 during the purification and thermal insulation of bath water, a CPU outputs a signal to a valve driving circuit so that a switching valve 39 switches a circulating flow passage for bath water to the side of a bypass flow passage 31 by a signal from a filter switching switch 28. When the circulating flow passage is switched to the bypass flow passage 31 side, bath water is sent to a heater 35 without passing through a purifying part 34. And thus even if the device is not stopped on cleaning the prefilter 23, refuse or the like mixed in the bath water in a bathtub 10 is not taken in the purifying part 34 and the bath water can be heated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circulation purifying apparatus for circulating a liquid stored in a storage tank by a circulation pump, collecting dust and the like mixed in the liquid by a filter, and purifying the liquid. About.

[0002]

2. Description of the Related Art Pooled water, for example, bath water stored in a bathtub, is inevitably mixed with organic matter such as dirt and hair, dust, dust, sand, etc., and is polluted with time due to turbidity. And smell,
In addition, slimming or the like occurs, and the comfort during bathing is impaired. If the stored water in the bathtub is replaced with new water each time it is used, such problems will not occur, but the cost of using tap water and the heating cost when boiling it in hot water will increase, and it will take time to exchange water. However, there are drawbacks such as not being able to enjoy bathing at any time.

[0003] As a solution to such a drawback, a circulation purifying apparatus for a bath generally called a 24-hour bath is known. This device is particularly intended for home use, and incorporates a cartridge in which useful microorganisms are grown on a collective substrate such as crushed stone, gravel, and other granular ceramics, and forcibly supplies bath water to the cartridge. It is intended to purify the bath water by circulating the water.

In such a circulating purification apparatus, a circulating pump incorporated in the apparatus is driven to suck bath water in a bathtub, and a sponge or the like disposed in a communication passage between the circulating purification apparatus and the bathtub is used. Through a filter to collect and filter large trash such as hair and lint mixed in the bath water, and then decompose organic matter such as dirt and body fat in the bath water with microorganisms.
It is designed to purify the amount of organic substances to below an allowable value. The purified bath water is finally heated or kept at a predetermined water temperature by the heater, and returns to the bathtub.

[0005]

However, in the above-mentioned circulation purifying apparatus, the apparatus is not stopped when cleaning a filter for collecting large dust such as hair and lint mixed in the bath water. If the filter is removed or the device is operated with the filter forgotten, the large trash mixed in the bath water may enter the inside of the device. Therefore, there is a problem that the cartridge for purifying the bath water is clogged with large dust, and the purifying ability of the cartridge cannot be maintained for a long time.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a purifying cartridge for purifying bath water is not clogged with large dust, and the purifying ability of the cartridge is maintained for a long period of time. It is an object of the present invention to provide a circulating purification device capable of performing the following.

[0007]

In order to achieve this object, a circulation purifying apparatus according to the first aspect of the present invention circulates a liquid stored in a storage tank into a circulation flow path by a circulation pump. After collecting dirt and the like mixed in the liquid by a removable filter, and then purifying the liquid by a purifying unit,
In particular, the circulation flow path is provided with a purification flow path having a start end and a termination end connected thereto and including the purification means, and a bypass flow path bypassing the purification means, wherein the purification flow path and the bypass flow path are provided. Channel switching means for switching the flow path between, and filter detection means for detecting the mounting / non-mounting of the filter, when the filter detection means detects the non-mounting of the filter, the Control means for controlling the flow path switching means to switch the flow path to the bypass flow path side.

Therefore, if the flow path is always set to the purification flow path side and the purifying means purifies the liquid, and the filter detecting means detects that the filter is not mounted, the control means is controlled by the control means. The flow path switching means controls the flow path to be switched to the bypass flow path side, and the liquid bypasses the purification means and flows to the downstream side of the circulation flow path.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic configuration diagram of a circulating purification apparatus according to the present embodiment. This device is a circulating warm water bath, and a bathtub 1
Purification is performed while circulating the bath water that is stored at 0 and is contaminated with time by the circulation pump 12 outside the bathtub 10.

That is, the circulating purification device includes a water supply unit 13 and a discharge unit 15 which are detachably provided in a bathtub 10 as a liquid storage tank, and a water absorption hose 16 and a drainage hose 18 connected to each unit. And an apparatus main body 19 to be connected. The device main body 19 is installed, for example, at the edge of the bathtub 10 or at an appropriate outdoor position.

The water supply unit 13 and the discharge unit 15
Each is fixed to the side wall of the bathtub 10 by a suction cup (not shown). Below the water supply unit 13, the suction port 2
1 is provided, and is configured to suck bath water in the bathtub 10 through a pre-filter 23 as a collecting means. The pre-filter 23 is made of polyurethane sponge, is detachable from the water supply unit 13, and can collect and remove large dust, hair, and other foreign matters mixed in the bath water. Bath water purified by the apparatus main body 19 is configured to return to the bathtub 10 from the discharge port 26 of the discharge unit 15.

A filter detecting switch 28 is provided inside the water supply unit as a filter detecting means for detecting whether or not the pre-filter 23 is mounted.

The apparatus main body 19 includes a circulating pump 12 for pumping and circulating bath water from the bathtub 10, a purifying section 34 for purifying organic substances and other pollutants contained in the bath water by adsorption, decomposition, filtration, etc., and a bath water. 35 for heating and keeping the water warm, and a flow sensor 3 for detecting the flow rate of the circulating bath water
6 and a temperature sensor 38 for detecting the temperature of the circulating bath water
And a switching valve 39 as a flow path switching means capable of switching a circulation flow of the bath water, and a flow path for communicating these components.

The switching valve 39 provides a circulation path for bath water,
The bath water circulation flow path is configured so as to be configured on the side of the purification flow path 30 that passes through the purification unit 34 that purifies bath water or on the side of the bypass flow path 31 that does not pass through the purification unit 34 that purifies bath water. It is possible to switch.

The purifying section 34 for purifying the circulating bath water comprises:
A microorganism purification mechanism 40 for adsorbing and decomposing organic substances contained in bath water by microorganisms to purify the microorganisms;
And physical filtration means 42 for collecting and filtering organic pollutants and inorganic pollutants contained in the bath water that has passed through zero.

Next, the configuration of the control system of this embodiment will be described with reference to the block diagram shown in FIG.

The control unit 50 includes a ROM 51 storing a program for controlling the entire circulating purification apparatus, a control panel 52, a RAM 53 for storing data input by the control panel 52, a temperature sensor 38, A flow sensor 36, a filter detection switch 28, a pump drive circuit 55 for driving / stopping the circulation pump 12, a heater drive circuit 56 for driving / stopping the heater 35, and a drive valve 39 for driving the switching valve 39. The valve drive circuit 57 is connected to the CPU 60 for controlling these components, and is configured. Here, the CPU 60, the ROM 51, the RAM 53, and the valve drive circuit 57 correspond to control means.

Next, the operation of the thus-configured circulation purification apparatus will be described.

In order to purify the bath water and heat and keep it warm,
When the power of the circulating purification device is turned on, the control panel 52 is turned on.
Set the temperature to keep the bath water warm. Then, CPU
60 determines whether or not the pre-filter 23 is installed in the water supply unit 13 based on the signal from the filter detection switch 28.

The pre-filter 23 is installed in the water supply unit 13.
Is determined to be attached, the CPU 60
Drives the circulation pump 12 and the heater 35, and the switching valve 39 switches the circulation path of the bath water to the purification flow path 30 side.
And a signal to the valve drive circuit 57.

When the circulating pump 12 is driven, a part of the bath water in the bathtub 10 is sucked through the suction port 21, and the pre-filter 23 catches large dust, hair, and other foreign matters mixed in the bath water. Collection and removal, water absorption hose 1
6 and is sent to the apparatus main body 19.

The bath water sent to the apparatus main body 18 is purified by a microorganism purification mechanism 40 by absorbing and decomposing organic substances contained in the bath water by microorganisms. The bath water that has passed through the microorganism purification mechanism 40 is collected and filtered by the physical filtration means 42 for organic pollutants and inorganic pollutants contained in the bath water, and then heated and maintained by the heater 35. The heated and maintained bath water is sent to the discharge unit 15 through the drain hose 18 and returned into the bathtub 10 from the discharge port 26.

The temperature of the bath water circulated by the circulation pump 12 is measured by a temperature sensor 38.
It is determined whether or not the water temperature measured by the temperature sensor 38 is equal to or higher than the heat retention set temperature input from the control panel 52. When determining that the measured temperature has become equal to or higher than the set temperature, the CPU 60 outputs a signal to the heater drive circuit 56 to stop the heater 35 so that the temperature of the bath water becomes the set temperature. Also, when the temperature of the bath water drops and the measured temperature falls below the set temperature,
The CPU 60 outputs a signal to the heater drive circuit 56 to drive the heater 35 again. By repeating this, the bath water is kept at a substantially constant temperature.

On the other hand, if it is determined that the pre-filter 23 is not installed in the water supply unit 13, the CP
U60 drives the circulating pump 12 and the heater 35, and the switching valve 39 switches the circulating flow path of the bath water to the bypass flow path 31 side. Each signal is output, and the control panel 52 indicates that the pre-filter 23 is not mounted.

When the circulating pump 12 is driven, a part of the bath water in the bathtub 10 is sucked from the suction port 21 and sent to the apparatus main body 19 through the water suction hose 16. The bath water sent to the apparatus main body 18 is sent to the heater 35 through the bypass passage 31 and is heated and kept warm by the heater 35. The bath water heated and kept warm is sent to the discharge unit 15 through the drain hose 18, and is discharged from the discharge port 26 to the bathtub 10.
Will be returned within.

A pre-filter 23 is mounted in the water supply unit 13, and the bath water is circulated by the circulating pump 12 to purify the bath water and keep the temperature warm. When the pre-filter 23 is removed from the water supply unit 13 to perform cleaning, a signal from the filter detection switch 28
However, a signal is output to the valve drive circuit 57 so that the switching valve 39 switches the bath water circulation flow path to the bypass flow path 31 side. When the circulation flow path is switched to the bypass flow path 31, the bath water is sent to the heater 35 without passing through the purification unit 34. Therefore, even if the apparatus is not stopped at the time of cleaning the pre-filter 23, dust or the like mixed in the bath water in the bathtub 10 is not taken into the purification unit 34, and the bath water can be further heated and kept warm.

When the cleaning of the pre-filter 23 is completed and the pre-filter 23 is mounted in the water supply unit 13 again, the signal from the filter detecting switch 28 causes the CPU 60 to cause the switching valve 39 to purify the circulation flow of the bath water. A signal is output to the valve drive circuit 57 so as to switch to the flow path 30 side, and after the large dust, hair, and other foreign matters mixed in the bath water are collected and removed by the pre-filter 23, the purifying section 34 is again activated. Purification of bath water is carried out.

As described above, according to the circulation purification apparatus of the present invention, the water supply unit 13 is controlled by the filter detection switch 28.
It is detected whether or not the pre-filter 23 is mounted in the inside. If the pre-filter 23 is not mounted,
The bath water circulation flow path is constituted by the bypass flow path 31 which does not pass through the purification section 34, and only heats and heats the bath water. When the pre-filter 23 is installed, the pre-filter 23 is used to supply the bath water. Since the purifying section 34 purifies the bath water after collecting and removing the mixed large dust and the like, the purifying section 34 does not become clogged with the large dust and the like, and the purifying ability of the purifying section 34 is improved for a long time. Can be maintained.

[0030]

As is apparent from the above description, according to the circulation purifying apparatus of the first aspect, the filter detecting means detects the mounting / non-mounting of the filter, and the filter detecting means detects the non-mounting of the filter. When detecting, the control means controls the flow path switching means to switch the liquid flow path to the bypass flow path side, so that the liquid is not taken into the purification means in a state where the filter is not mounted, The purifying means can be prevented from being clogged by large dust mixed in the liquid, and the purifying ability can be maintained for a long period of time.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a circulation purification device according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating an electric circuit configuration of the circulation purification device according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Bathtub 12 Circulation pump 23 Pre-filter 28 Filter detection switch 30 Purification channel 31 Bypass channel 34 Purification part 39 Switching valve 40 Microorganism purification mechanism 42 Physical filtration means 51 ROM 53 RAM 57 Valve drive circuit 60 CPU

Claims (1)

[Claims] 1. A liquid stored in a storage tank is circulated in a circulation channel by a circulation pump, and dust and the like mixed in the liquid are collected by a removable filter. In the circulating purification device configured to purify, the circulating flow path is provided with a purifying flow path having a starting end and a terminating end connected thereto and including the purifying means, and a bypass flow path bypassing the purifying means. A flow path switching means for switching a flow path between the purification flow path and the bypass flow path; a filter detection means for detecting whether the filter is mounted or not; and Control means for controlling the flow path switching means to switch the flow path to the bypass flow path side when the non-attachment is detected. Apparatus.