JP4977658B2 - Bath hot water system - Google Patents

Description

  The present invention relates to a bath hot water supply system for sterilizing bathtub water in a bathtub or hot water filled in a bathtub with sterilizing metal ions.

  Conventionally, as a bath water heater having a sterilizing function, a silver ion generator 303 is disposed in a hot water line 302 branched from a hot water line 301 and connected to a recirculation circulation line 304 as shown in FIG. (For example, patent document 1). According to this hot water supply apparatus 300, the silver ion generator 303 is operated during hot water filling, and silver ions are eluted into hot water hot water poured into the bathtub 305 so as to be sterilized.

Moreover, like the bath water heater 400 shown in FIG. 4, there is one in which a silver ion generator 403 is disposed in the middle of a recirculation circulation line 404 for replenishing bathtub water in the bathtub 405 (for example, Patent Document 2). According to the bath water heater 400, the silver ion generator 403 is operated during reheating, and silver ions are eluted in the bathtub water circulating in the recirculation circulation pipe 404 so as to be sterilized.
JP 2006-329527 A Japanese Examined Patent Publication No. 6-40859

  However, in the bath water heater 300 shown in FIG. 3, since the silver ion generator 303 is provided in the hot water pipeline 302, silver is added to the bathtub water in the bathtub 305 without adding hot water from the hot water pipeline 302 during reheating. I cannot replenish ions. For this reason, the bathtub water that has become dirty due to bathing without increasing the amount of hot water in the bathtub 305 could not be sterilized with silver ions.

  In the bath water heater 400 shown in FIG. 4, the silver ion generator 403 is provided in the middle of the recirculation circulation line 404, so that it is dropped from the hot water line 402 branched from the hot water line 401 when hot water is filled. If the hot water filled in the hot water is chased and sent from both the return pipe and return pipe of the circulation pipe 404, silver ions can be mixed into the hot water filled in hot water. However, when both of the hot water fillings are transported, the ratio of the hot water filling hot water flowing to the forward pipe side and the return pipe side varies depending on the piping construction and piping length of the recirculation circulation pipe 404, and therefore, a constant concentration It may be difficult to supply hot water filled with silver ions to the bathtub 405.

  The present invention has been made in view of the above circumstances, and supplies hot water containing a certain concentration of bactericidal metal ions to a bathtub during hot water filling without adding an apparatus for generating bactericidal metal ions such as silver ions. It is an object of the present invention to provide a bath hot water supply system that can be replenished with bactericidal metal ions in bath water without adding hot water when chasing.

The bath hot water system according to the present invention is:
Branch water from the bath water in the bathtub to the heat exchanger for bathing and follow it up, and branch from the hot water supply pipe with the hot water heat exchanger and connect to the above-mentioned heating circulation pipe. And a hot water line for hot water filling the bathtub.
A sterilizing metal ion generator for eluting sterilizing metal ions is provided at the junction of the hot water filling pipe and the recirculation circulation pipe ,
The sterilizing metal ion generator includes a pair of electrodes for eluting sterilizing metal ions by electrolysis, and when hot water is filled, the hot water filled pipe line is set so that the sterilizing metal ion concentration of the hot water is constant. Based on the flowing hot water flow rate, set the current value and energization time to the electrode, and at the time of replenishment, replenish the sterilizing metal ion concentration of the bath water in the bath with a constant concentration. It is set as the structure which sets and operates the electric current value and energization time which energize an electrode based on the total water storage amount of bathtub water, or the bathtub water flow volume which flows through a recirculation circulation pipe line .

  From the above configuration, the entire flow rate of the hot water fills into the junction when the hot water is filled. Therefore, regardless of whether the hot water filling is carried on both sides or on a single piece, the flow rate of the hot water does not vary depending on the piping construction, piping length, or the like of the additional circulation pipe in the junction. That is, the flow rate of the hot water filled in the junction is the same as the flow rate in the hot water pipeline. Therefore, a certain amount of bactericidal metal ions are eluted at the junction by a bactericidal metal ion generator, so that hot water filled with a constant bactericidal metal ion concentration can be stably supplied to the bathtub during filling. can do.

  In addition, the bathtub water that circulates in the chasing circulation pipe always passes through the junction when chasing. Therefore, the bactericidal metal ions can be replenished to the bathtub water without increasing the amount of hot water in the bathtub by eluting the bactericidal metal ions with this bactericidal metal ion generator.

  It is good also as a structure which arrange | positions the pump for pursuing bathtub water in the said junction part, and circulating it in a circulation pipeline, and provides the said bactericidal metal ion generator in this pump.

According to this, at the time of reheating, the pump is driven to circulate the bath water in the recirculation conduit, but since a relatively strong water flow occurs in the pump, the generation of sterilizing metal ions provided in this pump It is suppressed that the contaminant in bathtub water adheres to an apparatus. Therefore, it can prevent that the elution capability of the bactericidal metal ion in a bactericidal metal ion generator deteriorates by adhesion of the contaminant in bath water.
Moreover, since the bactericidal metal ion generator is integrated with the pump, it is easy to handle whether or not the bactericidal metal ion sterilization function is installed by replacing the common pump.

  As described above, according to the present invention, by providing a sterilizing metal ion generator at the junction of the hot water filling pipe and the recirculation circulation pipe, it is possible to add hot water without adding a sterilizing metal ion generator. Hot water filled with a certain concentration of bactericidal metal ions can be supplied to the bathtub at the time of tensioning, and bactericidal metal ions can be replenished to the bathtub water without adding hot water to the bathtub at the time of rebirth. Therefore, the hot water used for bathing can be sterilized by a certain concentration of bactericidal metal ions at any time during hot water filling and reheating.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
In the hot water supply system 1 shown in FIG. 1, a hot water supply pipe 2 in which a water supply pipe 21 and a hot water supply pipe 22 are connected to a hot water supply heat exchanger 20, and a return pipe 31 and an outgoing pipe 32 are connected to a reheating heat exchanger 30. The hot water circulation pipe 3 connected to the circulation fitting 51 of the bathtub 5 and the hot water filling branched from the outlet pipe 22 of the hot water supply pipe 2 and connected to the return pipe 31 of the hot water circulation pipe 3 And a conduit 4. A pump P, a water level sensor 33 and the like are provided in the return pipe 31 of the tracking circulation pipe 3. Further, the hot water filling pipe line 4 is provided with a pouring electromagnetic valve 41, a check valve 42, a flow rate sensor 43, and the like.

  A silver ion generator (bactericidal metal ion generator) 6 for eluting silver ions as bactericidal metal ions is provided at the junction 7 between the hot water filling pipe 4 and the recirculation circulation pipe 3. It has been. That is, the junction P is provided with the pump P for pursuing the bath water in the bathtub 5 and circulating it in the circulation conduit 3, and the silver ion generator 6 is provided in the pump P. It has been.

  The pump P is configured such that bath water circulating in the recirculation circulation pipe 3 passes through a hot water filled in the hot water introduced from the hot water filling pipe 4 in an internal water passage (not shown). In addition, at the time of hot water filling, hot water filled with hot water flows out from the suction port and the discharge port of the pump P, and both can be conveyed by the forward pipe 32 and the return pipe 31 of the follow-up circulation pipe 3.

  The silver ion generator 6 includes a pair of silver electrodes 61 disposed in the water flow chamber in the pump P, and an energization control unit that controls the silver electrodes 61 so that a predetermined current value is energized from a power source ( (Not shown). Then, by energizing between the pair of silver electrodes 61, silver ions eluted by electrolysis of the silver electrode 61 are mixed into hot water or water flowing into the pump P. The elution amount Y of silver ions is calculated by the following equation (1).

    Y = 108 At / F (1)

  Here, in formula (1), “Y” is the silver ion elution amount from the silver electrode 61, “108” is 1 gram equivalent of silver, “A” is the current value to the silver electrode 61, and “t” is silver. The energization time of the electrode 61, “F”, indicates a Faraday constant. Therefore, the silver ion elution amount (X) from the silver electrode 61 is set by the current value (A) to the silver electrode 61 and the energization time (t). The current value (A) and the energization time (t) are set by the energization control unit. The silver ion concentration of hot water or water flowing through the silver electrode 61 is controlled by setting the flow rate of hot water or water flowing through the pump P, the current value (A), and the energization time (t). Is done.

  In the hot water supply system 1 having the above-described configuration, when hot water is filled in the bathtub 5, the hot water from the hot water supply pipe 2 passes through the hot water supply pipe 4 and the recirculation circulation pipe 3 by opening the pouring electromagnetic valve 41. And flow into the silver electrode 61 of the silver ion generator 6 installed in the pump P. Then, the hot water filled in the silver electrode 61 flows out from the pump P to both the return pipe 31 and the forward pipe 32 of the circulation circuit 3 (both transported) and enters the bathtub 5 from the circulation fitting 51. It is poured. By operating the silver ion generator 6 during the hot water filling, silver ions are eluted in the hot water hot water flowing into the pump P, and the hot water hot water is sterilized. Therefore, this sterilized hot water filled with hot water is poured into the bathtub 5.

By the way, since the total flow rate of the hot water hot water flowing through the hot water filling line 4 flows into the pump P, the flow rate of the hot water hot water flowing into the pump P is the amount of water provided in the hot water filling line 4. It can be detected by the sensor 43. And the elution amount Y of the silver ion eluted to the hot water filled with the silver ion generator 6 can be controlled by the current value (A) and the energization time (t) for energizing the silver electrode 61 as described above. Accordingly, since the flow rate of the hot water is set to a substantially constant flow rate by the pouring solenoid valve 41, the current value (A) and the energization time (t) for energizing the silver electrode 61 are set based on this flow rate. The silver ion concentration of hot water filled in hot water poured into the bathtub 5 can be set to a constant concentration. For example, the silver ion concentration at the time of hot water filling is set to 100 ppb to 500 ppb. This is because the silver ion concentration is preferably 100 ppb or more in order to exert the bactericidal effect, and the silver ion concentration is preferably 500 ppb or less in consideration of the influence on the human body of the bather.
The above hot water filling operation is controlled by a control unit (not shown).

  Next, when the bath water is refilled, the pump P is driven so that the bath water in the bath 5 is circulated in the recirculation circulation line 3 and the heat for the bath through the pump P of the junction 7. Heated by the exchanger 30. And since this circulated bathtub water distribute | circulates to the silver electrode 61 of the silver ion generator 6 provided in the said pump P, when the silver ion generator 6 is operated during chasing, silver Silver ions from the electrode 61 are eluted into the bath water, and the bath water is sterilized. Therefore, since this sterilized bathtub water is returned to the bathtub 5, silver ions can be replenished to the bathtub water without adding hot water in the bathtub 5.

At the time of reheating, the current value (A) and the energization time (t) for determining a predetermined silver ion concentration (for example, 100 ppb) with respect to the amount of water stored in the bathtub 5 are determined, and along with this, The silver ion generator 6 is operated. At this time, for example, the silver ion generator 6 may be operated by determining the current value (A) and energization time (t) to the silver electrode 61 with respect to the total amount of water stored in the bathtub 5, Further, the current value (A) and the energization time (t) to the silver electrode 61 are determined so as to be set to a predetermined silver ion concentration with respect to the flow rate flowing through the circulation circuit 3 per unit time. May be. Moreover, the total water storage amount in the bathtub 5 can be calculated | required from the water level in the bathtub 5 detected by the water level sensor 33, for example.
The above chasing operation is controlled by a control unit (not shown).

  According to the bath hot water supply system 1 according to the above embodiment, hot water (hot water hot water, bathtub water) flows into the junction 7 at the time of both hot water filling and chasing. When the hot water is filled, the entire flow rate of the hot water is supplied to the junction 7 so that the flow rate of the hot water at the junction 7 is not affected by the piping construction or the piping length of the additional circulation pipe 3. Is determined. Accordingly, by elution of a certain amount of silver ions by the silver ion generator 6 at this junction 7, hot water filled with a constant concentration of silver ions can be stably supplied to the bathtub 5 during hot water filling. . In addition, the silver ions are eluted by the silver ion generator 6 at the junction 7 at the time of chasing, so that the bathtub water can be replenished by adding silver ions to the bathtub water without increasing the hot water in the bathtub 5. Can do.

  In this way, by providing the silver ion generator 6 at the junction 7 between the hot water line 4 and the recirculation circulation line 3, it is constant in the bathtub 5 when the hot water is filled without adding the silver ion generator 6. Hot water filled with hot water containing silver ions at a concentration can be supplied, and silver water can be replenished to the bathtub water without adding new hot water to the bathtub 5 at the time of chasing. Therefore, hot water (hot water hot water, bath water) used for bathing can be sterilized with a certain concentration of silver ions at any time during hot water filling and chasing.

  Further, when reheating, the pump P is driven to circulate the bath water in the recirculation circulation line 3, but since a relatively strong water flow occurs in the pump P, a silver ion generator provided in the pump P is provided. It is suppressed that the contaminants of bath water adhere to the silver electrode 61 of 6. As shown in FIG. Therefore, by providing the silver ion generator 6 in the pump P, it is possible to prevent the elution of silver ions from the silver electrode 61 due to adhesion of contaminants in the bath water.

  Moreover, since the silver ion generator 6 is integrated with the pump P, by replacing the common pump P, it is possible to easily deal with models with or without a silver ion function.

(Other embodiments)
FIG. 2 shows another embodiment of the bath hot water supply system.
In the bath hot water supply system 1A shown in FIG. 2, the junction 7 of the hot water filling line 4 and the recirculation circulation line 3 is disposed on the discharge port side of the pump P, and the silver ion generator is connected to the junction 7. 6 is provided. Even in this case, since hot water (hot water, bath water) flows into the junction 7 where the silver ion generator 6 is provided at both the time of hot water filling and the time of chasing, At any time, the hot water used for bathing can be sterilized with a certain concentration of silver ions.

Moreover, although the silver ion generator 6 is arrange | positioned at the discharge port side of the pump P, it is preferable to provide the confluence | merging part 7 which arrange | positions the silver ion generator 6 in the vicinity of the discharge port of the pump P in that case. Thereby, since the bathtub water discharged from the pump P comparatively vigorously at the time of chasing is sent to the silver ion generator 6 of the junction 7, the contaminants of the bathtub water are present on the silver electrode 61 of the silver ion generator 6. Adhesion is suppressed.
In the hot water supply system 1A described above, the configuration and operational effects other than those described above are the same as in the hot water supply system of FIG.

In addition, this invention is not limited only to the said embodiment, A various change is possible within the scope of the present invention.
For example, the junction 7 between the hot water filling line 4 and the recirculation circulation line 3 is disposed on the suction port side of the pump P, which is opposite to the bath hot water system 1A in FIG. It is good also as a structure which provides the said silver ion generator 6 in the part 7. FIG. Even in this case, hot water flows into the junction 7 where the silver ion generating device 6 is provided both when the hot water is filled and when the hot water is refilled. Hot water containing a constant concentration of silver ions can be supplied to the bath water, and at the time of replenishment, the bath water can be replenished without adding new hot water to the bath 5.
Further, the bactericidal metal ions are not limited to the above-described silver ions, but may be metal ions that exhibit a bactericidal action such as copper ions, zinc ions, cobalt ions, and the like. In this case, an electrode made of a metal material of the metal ion may be used as the electrode of the bactericidal metal ion generator.

It is a schematic diagram which shows the whole structure of the bath hot-water supply system by embodiment of this invention. It is a schematic diagram which shows the whole structure of the bath hot-water supply system by other embodiment of this invention. It is a block diagram which shows the conventional bath hot-water supply apparatus with a sterilization function. It is a block diagram which shows the other conventional hot water supply apparatus with a sterilization function.

Explanation of symbols

1,1A bath hot water system 2 hot water supply line 3 reheating circulation line 4 hot water line 5 bathtub 6 silver ion generator 7 junction 61 silver electrode P pump

Claims (2)

Branch water from the bath water in the bathtub to the heat exchanger for bathing and follow it up, and branch from the hot water supply pipe with the hot water heat exchanger and connect to the above-mentioned heating circulation pipe. And a hot water line for hot water filling the bathtub.
A sterilizing metal ion generator for eluting sterilizing metal ions is provided at the junction of the hot water filling pipe and the recirculation circulation pipe ,
The sterilizing metal ion generator includes a pair of electrodes for eluting sterilizing metal ions by electrolysis, and when hot water is filled, the hot water filled pipe line is set so that the sterilizing metal ion concentration of the hot water is constant. Based on the flowing hot water flow rate, set the current value and energization time to the electrode, and at the time of replenishment, replenish the sterilizing metal ion concentration of the bath water in the bath with a constant concentration. A bath hot water supply system that operates by setting a current value and an energization time for energizing an electrode based on the total amount of water stored in the bath water or the flow rate of the bath water flowing through the additional circulation pipe . In the bath hot water system according to claim 1,
A bath hot water supply system in which a pump for pursuing bathtub water and circulating it in a circulation pipe is provided at the junction, and the sterilizing metal ion generator is provided in the pump.

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