JPH11244169A - Conduit sterilizing and cleaning device in bathing water circulating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To clean a circulation conduit with hot water and to prevent the hot cleaning water from flowing back into a bathtub just after sterilizing and cleaning. SOLUTION: This device is composed of a heater 1 for heating bathing water from a low temperature to a high temperature, a circulation pump P, a circulation conduit 4 for circulating bathing water through the circulation pump P so as to return it from a bathtub 10 to the bathtub 10, an opening/closing valve V provided on the circulation conduit 4 close to the side of the suction rather than the connection spot of a connection conduit 5 in the circulation conduit 4, and a switching valve V1 to be switched to three directions while being provided at the spot connecting the connection conduit 5 and the discharge side of the circulation conduit 4. A circulation unit C composed of the switching valve V1 and the connection conduit 5 is provided inside a main body A of sterilizing and cleaning part. At the time of cleaning the conduit, the bathing water in the circulation conduit 4 can be circulated through the connection conduit 5 while keeping the temperature high by switching the respective valves and at the time of draining, the purified bathing water in the circulation conduit 4 is discharged outside the bathtub 10 by switching the respective valves.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for disinfecting and purifying a pipeline in a bath water circulating apparatus which cleans a circulation pipeline with hot water and prevents backflow of the cleaning hot water immediately after the sterilization and purification into the bathtub. About.

[0002]

2. Description of the Related Art In a conventional bath water circulation device, a microbial membrane may adhere to the main body and piping of the device due to long-term use.
It needed to be washed. Further, the method involves directly adding a disinfectant to hot water in a bathtub and circulating the bathwater circulation device.

[0003] Therefore, a large amount of chemicals must be used to add the bactericide to the hot water in the bathtub, which is uneconomical, and the bathtub has to be cleaned after using the chemicals.
For this reason, the applicant has developed a device that sterilizes and cleans only the inside of the circulation pipe with hot water, but especially when stopped at the connection pipe, the sterilization and purification unit main body is located above the bathtub. When it is located at a location, hot water that has flowed back and purified immediately after the hot water circulation operation was stopped may enter the bathtub, causing a risk of hot water due to the hot water or fouling the bathtub.

[0004]

SUMMARY OF THE INVENTION The inventors of the present invention have made intensive studies to solve the above-mentioned problems, and as a result, have found that the present invention relates to a heater capable of heating bath water from a low temperature to a high temperature. A circulation pump for circulating bath water, a circulation line for circulating the bath water from the bathtub back to the bathtub by the circulation pump, an appropriate portion near the suction side of the circulation line, and the circulation line A connecting line connecting an appropriate point on the outflow side of the connecting line, an on-off valve provided in the circulating line closer to the suction side than the connecting point of the connecting line in the circulating line, and A three-way switching valve provided at a connection point near the outlet side of the pipeline, and a circulation unit including the switching valve and the connection pipeline is provided in the sterilization / purification unit main body. By switching each valve, the bath water in the circulation line is heated to a high temperature by a heater. And a line disinfection / purification device in a bath water circulating device that allows the bath water purified in the circulation line to be discharged out of the bath tub by switching the valves when draining. By doing so, the circulation pipeline can be washed with hot water, and backflow can be prevented immediately after the hot water circulation work is stopped, thus solving the above-mentioned problem.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a bath water circulation device mainly comprises a circulation pump P for circulating bath water,
Ceramic heater 1 for heating bath water from low to high temperature
A sterilizing device 2 for sterilizing bath water, a filtering device 3 for filtering fine dirt and impurities from the bath water, and a circulation for circulating the bath water from the bath 10 to the bath 10 by the circulation pump P. It is composed of a pipeline 4 and the like.

The connecting line 5 is configured to connect an appropriate portion of the circulation line 4 near the suction side and an appropriate portion of the circulation line 4 near the outflow side. , A heater 1, a sterilizer 2, and a filter 3, a closed loop is formed by the circulation line 4 and the connection line 5. In the circulation line 4, the suction side of the connection line 5 at one end is referred to as a water supply side line 4a, and the outflow side of the connection line 5 is referred to as an outflow side line 4b. The circulation pump P, the heater 1, the sterilizer 2, and the filter 3 are not provided on the water supply side pipe 4a and the outlet side pipe 4b. The circulation line 4 excluding the circulation pump P, the heater 1, the sterilization device 2, the filtration device 3, the connection line 5, the water supply side line 4a and the outflow side line 4b is provided inside the sterilization and purification unit main body A as a casing. It is stored in. A switching valve V1 composed of a three-way valve is provided at a connection between the connection pipe 5 and an appropriate portion of the circulation pipe 4 with the outflow pipe 4b.

Further, a sub-connection pipe is provided between an appropriate portion of the circulation line 4 between the circulation pump P and the heater 1 and an appropriate portion between the connection portion of the connection line 5 and the filtration device 3. Road 6 is provided. A second switching valve V2 as a three-way valve is provided at a connection point between the sub-connection pipe 6 from the filtration device 3 and the circulation pipe 4, and the heater 1 and the sub-switch on the circulation pipe 4 are connected to each other. A third switching valve V3, which is a three-way valve, is provided at an appropriate position between the connection pipe 6 and the connection pipe 6. The third switching valve V3 is provided with a discharge pipe 7, and the end thereof is disposed so as to be located outside the bathtub 10. The water supply side pipeline 4a
The pre-filter 8 is provided at the suction port of the outlet side pipe 4.
An ejection section 9 is provided at the outlet of b so that a jet jet flows out. The switching valve V1 and the connection pipe line 5 are collectively referred to as a circulation unit C. Further, a portion including the pre-filter 8 and the ejection portion 9 is referred to as a suction / discharge unit B.

When the line is sterilized and purified by hot water, the on-off valve V is closed and the water supply side line 4a is shut off. In the circulation line 4, the switching valve V1, the second switching valve V2 and the third switching valve are provided. In the state where the water supply side pipe 4a and the outflow side pipe 4b are closed via V3, the circulation pump 4 and the circulation pipe 4 in which the heater 1, the sterilizer 2, and the filter 3 are arranged, and the connecting pipe. A closed loop is formed with the passage 5, and the bath water in the inside is circulated by the operation of the circulation pump P.

In the present invention, all operations including valve control are performed automatically. This configuration is configured as a block diagram as shown in FIG. That is, the central processing unit 2
1 (CPU) for controlling the start and end of the hot water pipe line sterilization and washing, etc .; and the open / close valve V, the switching valve V1, the second switching valve V2 and the third switching valve V3.
, A temperature sensor switching means 24 for switching and controlling the first temperature sensor 25 and the second temperature sensor 26, a lamp control means 27, and a heater control means 28. The hot water disinfection cleaning command means 22 includes a time setting unit that sets a cleaning start time for performing hot water cleaning in the circulation pipeline, a time storage unit that stores the set cleaning start time and the cleaning time, It has a time changing unit for appropriately changing the start time and the cleaning time. The central processing unit 21, the hot water sterilization and cleaning command means 22, the valve control means 23, the temperature sensor switching means 24, the lamp control means 27, the heater control means 28 and the like are collectively referred to as a control unit D.

The first temperature sensor 25 detects a desired hot water temperature (for example, 42.degree. C.) as bath water, and the second temperature sensor 26 detects a hot water temperature of 65.degree. This is to detect whether or not the above is true. The two temperature sensors are switched by the temperature sensor switching means 24 in the normal operation mode and the hot water sterilization and washing mode. The lamp control means 27 controls ON / OFF of the UV lamp. Further, ON / OFF of the heater 1 is controlled by the heater control means 28.

FIG. 4 is a flow chart of the control of the hot water temperature in the circulation line and the control of the switching command of the on-off valve V, the switching valve V1, the second switching valve V2 and the third switching valve V3 according to the present invention. After a predetermined time from the state of the flowchart of FIG. 5, the all-water hot water disinfection and cleaning mode is set (see S11),
The temperature is switched by the temperature sensor switching means 24 (see S12), and the second temperature sensor (hot water type) 26 is turned on (see S13). At this time, the heater 1 is kept in the ON state. Then, the UV lamp of the sterilizer 2 is turned off (see S14). Then, the valve control means 23 switches the switching valve V1 from the port to the port so as to change to circulation in the pipeline (see S15), and the second switching valve V2 from the port to the port. The switching is performed (see S16), and the third switching valve V3 is switched so as to flow from port to port (see S17).
Further, the on-off valve V maintains the closed state (see S18). Then, from the time when the above-mentioned hot water disinfection cleaning mode is performed, the hot water disinfection cleaning instruction means 22 operates, and the bath water temperature is determined based on a predetermined time in consideration of the temperature rise until the start of the hot water pipeline disinfection cleaning. The temperature is measured (see S19), and it is automatically detected via the second temperature sensor 26 whether or not the temperature in the circulation line 4 is a predetermined temperature (for example, 70 ° C.) (see S20). If not, the ON state of the heater 1 is maintained.

Further, the bath water in the pipe is maintained at a predetermined temperature (for example, 7 ° C.).
0 ° C.), the heater 1 is turned off (S
21). In this state, the bath water in the closed loop pipe is circulated by the pump pressure of the circulation pump P, and the hot water pipeline sterilization washing operation is started, and this state is as shown in FIG.
Then, from the start of the hot water pipeline sterilization cleaning operation, the hot water sterilization cleaning command means 22 is operated to measure a predetermined time (about 5 minutes at 70 ° C.) for cleaning the hot water pipeline (see S22),
It is determined whether or not the predetermined time has elapsed (see S23).
If the predetermined time has not elapsed, the process returns to the step before S21. If the predetermined time has elapsed, the hot water discharge mode is set (see S24).

Then, the switching valve V1 is switched from the port to the port by the valve control means 23 so as to be the same as during normal operation (see S25), and the second switching valve V2 is held so as to flow from the port to the port. Then, the third switching valve V3 is held so as to flow from port to port (see S27). The on-off valve V is opened (see S28), and the washed hot water is discharged out of the bathtub 10 through the discharge pipe 7. A predetermined time during which the hot water is discharged is measured by a timer, and it is determined whether or not the predetermined time has elapsed (see S29). If the predetermined time has elapsed, it is determined whether or not the hot water sterilization cleaning has been completed. Do (S
30). If it is completed, the temperature sensor is switched by the temperature sensor switching means 24 (see S31), and the first temperature sensor (normal type) 25 is turned on (see S32). Then, the heater 1 is turned on (S
33). The UV lamp is turned on (see S34), and the process returns to the normal operation state flowchart from this state.

In the normal operation state of the bath water circulation device, as shown in FIG. 5, it is determined whether or not the bath water circulation device should be driven (see S1). The power of the bath water circulation device is turned on (see S2), the circulation pump P is driven (see S3), and the heater 1 is turned on.
Is turned on (see S4), the UV lamp of the sterilizer 2 is turned on (see S5), the first temperature sensor (normal type) 25 is turned on, and the bath water circulation device is driven. At that time, it is determined whether or not to perform hot water line cleaning (S
7), if it is to be subjected to hot water pipe line sterilization cleaning, the flow proceeds to the flow chart of FIG. 4 and then to the flow chart of an automatic subroutine (see FIG. 4), and returns to the flow chart of FIG. 5 again. If it is determined that the hot water pipeline sterilization cleaning is not to be performed, it is driven as it is, and it is determined whether or not to stop the bath water circulation device (see S7). Return to the position before S2 to turn on the power. When the bath water circulation device is not driven in S1, the process is terminated.

In the second embodiment, as shown in FIG. 6, in the first embodiment, the on-off valve V is
This is a pipe line sterilizing and purifying apparatus in a bath water circulating apparatus in which the bath water flowing through the check valve V4 flows only from the bathtub 10 side to the circulation pipe 4 instead of the check valve V4. The other configuration is the same as that of the first embodiment. In the flowchart, there is no opening or closing of the on-off valve V in the valve control, and the other is the same.

In FIG. 7, the circulating unit C is provided outside the sterilizing and purifying unit main body A, at a position outside the sterilizing and purifying unit main body A, and in proximity to the suction / discharge unit B. Is provided. Further, at this time, the on-off valve V or the check valve V4 is not provided. The flowchart in this case is the same as that in the second embodiment.

[0017]

First, according to the first aspect of the present invention, a heater 1 capable of heating bath water from a low temperature to a high temperature, a circulation pump P for circulating the bath water, and Circulation pipeline 4 circulating from bathtub 10 back to bathtub 10
A connecting line 5 for connecting an appropriate portion of the circulation line 4 near the suction side and an appropriate portion of the circulation line 4 near the outflow side; An on-off valve V provided on the circulation line 4 closer to the suction side than the connection point, and a switching valve V1 for switching to three directions provided at a connection point between the connection line 5 and the outflow side of the circulation line 4. , The switching valve V1
A circulation unit C comprising the connection pipe 5 and the connection pipe 5 is provided in the sterilizing and purifying unit main body A, and at the time of pipe cleaning, the bath water in the circulation pipe 4 is connected while being heated by the heater 1 by switching the valves. It is made possible to circulate through the pipe 5 and, at the time of drainage, a pipe line sterilizing and purifying apparatus in a bath water circulating apparatus in which the bath water purified in the circulation pipe 4 is discharged to the outside of the bathtub 10 by switching each valve. As a result, first, when the hot water circulation sterilization cleaning is completed in the presence of the on-off valve V, even if the sterilization cleaning device main body A is present above the bath surface of the bathtub 10, the sterilization cleaning device A is sterilized. Secondly, it is possible to prevent the washed hot water in the purifying section main body A from flowing back into the bathtub 10, and secondly, it is possible to eliminate the trouble of separately adding a sterilizing agent, and to easily carry out pipe washing at any time. Not only Legionella bacteria but also Also able to kill against Suporijiumu bacteria such an effect equal is very safe and hygienic.

In particular, according to the first aspect of the present invention, when the operation is stopped in a state where a circulation circuit for performing hot water sterilization is configured,
The hot water-washed bath water can be prevented from flowing back to the bath tub 10 to prevent the bath water from being contaminated, and the bath water circulation device (24)
Since the piping connecting the time bath apparatus and the circulation unit C is completely shut off, there is an advantage that bath water exchange and maintenance of the apparatus main body can be easily performed. Further, since the pipe connecting the bath water circulation device and the circulation unit C is completely shut off, there is no restriction on the relative position (height) between the sterilization / purification unit main body A and the bathtub 10, and there is an effect that the installation can be freely performed.

According to the second aspect of the present invention, in the first aspect, the on-off valve V is replaced with a check valve V4, and bath water flowing through the check valve V4 flows from the bathtub 10 side to the circulation line 4. By using the pipe line sterilizing and purifying device in the bath water circulation device that can be circulated only, the same effect as the invention of claim 1 can be obtained only by the presence of the check valve V4 without controlling the on-off valve V or the like. Play.

[Brief description of the drawings]

FIG. 1 is a schematic view of a hot water circulation operation state according to a first embodiment of the present invention.

FIG. 2 is a schematic diagram of a normal operation state according to the first embodiment of the present invention.

FIG. 3 is a block diagram of the pipeline cleaning of the present invention by automatic operation.

FIG. 4 is a flowchart of the pipeline cleaning of the present invention by automatic operation.

FIG. 5 is a flowchart of a normal operation.

FIG. 6 is a schematic diagram of a hot water discharge operation state according to the second embodiment of the present invention.

FIG. 7 is a schematic view of a normal operation state in another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Heater 4 ... Circulation pipeline 5 ... Connection pipeline 10 ... Bathtub A ... Sterilizing and purifying part main body P ... Circulation pump C ... Circulation unit V ... Open / close valve V1 ... Switching valve V4 ... Check valve

Claims (2)

[Claims] 1. A heater capable of heating bath water from a low temperature to a high temperature, a circulation pump for circulating the bath water, and a circulation pipe for circulating the bath water from the bathtub to the bathtub by the circulation pump. A connecting line connecting an appropriate portion of the circulation line near the suction side and an appropriate portion of the circulation line near the outflow side; and An on-off valve provided in a side circulation circuit, and a three-way switching valve provided at a connection point between the connection pipeline and the outflow side of the circulation pipeline, wherein the switching valve and the connection pipeline are connected to each other. The circulation unit is provided in the sterilization / purification unit main body, and at the time of washing the pipe, the bath water in the circulation pipe is heated by the heater by switching each of the valves so that the water can be circulated through the connection pipe,
The apparatus for disinfecting and purifying a pipe in a bath water circulating apparatus, wherein at the time of drainage, the bath water purified in the circulation pipe is discharged out of the bathtub by switching the valves. 2. A pipe line in a bath water circulation device according to claim 1, wherein the on-off valve is replaced with a check valve, and the bath water flowing through the check valve can flow only from the bathtub side to the circulation pipe line. Sterilization and purification equipment.