JP7211000B2 - hot water system - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water system configured to remotely monitor a hot water device for a bathtub or pool.

Conventionally, replacement parts for products such as water heaters installed in public baths are stored so that they can be obtained during the manufacturing period of the product and for a certain period after the end of manufacturing. Deadlines, deadlines, etc. are managed. For example, the inventory management system of Patent Document 1 investigates the inventory of parts to be replaced when there is a request for repair of a product, uses the inventory parts for repair if there is inventory, and uses idle equipment if the inventory is insufficient. are investigated and ordered, and the parts are used for repairs.

By the way, in bathtubs and pools of public baths, welfare facilities, exercise facilities, accommodation facilities, etc., the hot water is circulated to remove impurities and sterilize, thereby maintaining the sanitary condition of the hot water. Impurities are removed, for example, by passing hot water through a filtration tank containing fine particles as a filter medium. Sterilization is carried out by mixing a chlorine-based chemical such as an aqueous sodium hypochlorite solution with circulating hot water.

The sterilizing agent is automatically injected into the hot water from the chemical unit so that the free residual chlorine concentration in the hot water meets the standards stipulated by ordinances, etc., and when the remaining amount of the agent reaches the remaining amount that requires replenishment. A notification prompting for replenishment of the medicine is made. Since the injected chemical is consumed by sterilization and also evaporates, the concentration of free residual chlorine in hot water decreases over time. As for the filtration tank, automatic cleaning is carried out periodically in order to discharge the impurities captured by the filter media and recover the filtration capacity. When approaching, a notification prompting replacement of the filter tank is made.

JP 2011-107934 A

Parts such as chemicals and filtration tanks that have been notified to be replenished or replaced are, for example, ordered by the facility manager to a service shop that handles aftermarket parts, replenished with the delivered chemicals, and replaced with the delivered filtration tank. ing. However, if the parts reach the limit of use due to troubles in ordering, etc., it becomes difficult to maintain sanitary conditions by circulating hot water. It will be used in a sink state, which is not preferable.

For example, if there is no medicine in stock and the delivery date is later than usual, the medicine will be used up before the delivery date and the use limit will be reached, and it will be difficult to order from an idle device as in Patent Document 1. There is a possibility that it will become impossible to use the bathhouse, etc. In addition, since a person places an order for the medicine based on the notification of replenishment, there is a gap between the notification and the ordering, and the medicine may run out before the delivery date. There is also a possibility that the filter tank will reach its service limit as well.

SUMMARY OF THE INVENTION An object of the present invention is to provide a hot water system capable of placing an order for parts at an appropriate time and delaying the expiration date of the parts.

A hot water system according to claim 1 of the invention comprises a hot water device that supplies hot water to a bathtub or a pool and circulates the hot water, and an external server to which the hot water device is connected via a communication network. wherein the external server has an automatic ordering function for automatically ordering replenishment replacement parts based on the operation information of the hot water system transmitted from the hot water system, and the replenishment replacement ordered by the automatic ordering function. The hot water apparatus has a delivery date response function for transmitting the delivery date of the spare parts to the hot water apparatus, and the hot water apparatus can execute a life extension operation for delaying the service limit time of the parts to be replenished or replaced by the ordered replenishment replacement parts. In addition, when it is determined that the received delivery date is later than the usage limit time when the circulation operation is continued, the life extension operation is performed .

According to the above configuration, the external server automatically orders replacement parts for parts nearing the service limit based on the operation information of the hot water system, and the hot water system sets the service limit of the parts to be replenished or replaced. Life-prolonging operation that delays the timing is possible. Therefore, it is possible to place an order for parts for replenishment and replacement at an appropriate time, and to delay the expiration date of the parts to be replenished or replaced.
Also, the hot water supply apparatus executes the life extension operation when it is determined that the delivery date of the automatically ordered replenishment replacement parts is later than the usage limit time of the parts to be replenished or replaced. Therefore, in the case of an emergency in which the delivery date cannot be met even if the parts for replenishment/replacement are ordered at an appropriate time, the life-prolonging operation can be performed to delay the usage limit timing of the parts to be replenished or replaced.

In the hot water system of the invention of claim 2 , in the invention of claim 1, the external server determines that the delivery date of the replenishment replacement parts ordered by the automatic ordering function is earlier than the usage limit time when the circulation operation is continued. It is characterized in that when it is determined that the operation will be delayed, the hot water device is commanded to execute the life-prolonging operation.

According to the above configuration, when the external server determines that the delivery date of the automatically ordered replenishment replacement parts is later than the usage limit time of the parts to be replenished or replaced, the external server instructs the water heater to execute the life-prolonging operation. Therefore, in the case of an emergency in which the delivery date cannot be met even if the parts for replenishment/replacement are ordered at an appropriate time, the life-prolonging operation can be performed to delay the usage limit timing of the parts to be replenished or replaced.

The hot water system of the invention of claim 3 is the hot water system of the invention of claim 1 or 2 , wherein the hot water device comprises filtering means and chemical injection means for maintaining the sanitary condition of hot water by the circulation operation, and It has water replenishing means for replenishing tap water and control means for controlling these, and the control means is characterized by controlling the life-prolonging operation so as to maintain a sanitary condition during the circulation operation.

According to the above configuration, the hot water apparatus comprises filtering means, chemical injection means, water replenishing means, and control means for controlling these means for maintaining the sanitary condition of hot water in the bathtub or pool by circulating operation, and the control means is , to control life-prolonging operation so as to maintain sanitary conditions during circulation operation. Therefore, the life-prolonging operation in an emergency can delay the end of service life of the parts to be replenished or replaced while maintaining the sanitary condition of hot water.

In the hot water system of the invention of claim 4 , in the invention of claim 3 , the external server controls, based on the operation information, when the remaining amount of medicine in the medicine injection means reaches a predetermined amount requiring replenishment. The replenishment medicine is automatically ordered from the service shop, and the life-prolonging operation is characterized by increasing the frequency of water replenishment by the water replenishing means and reducing the injection amount of the medicine by the medicine injection means compared to the circulating operation. .

According to the above configuration, the external server orders the chemical for replenishment by the automatic ordering function, and the hot water device increases the frequency of replenishing the tap water and reduces the injection amount of the chemical by the life extension operation until the chemical is used up. delay the time. Therefore, in case of emergency, the decrease in the concentration of free residual chlorine in hot water caused by reducing the injection amount of the chemical is compensated for by the chlorine contained in the tap water, and the chemical is used up while maintaining the sanitary condition of the hot water. You can delay the deadline.

In the hot water system of the invention of claim 5 , in the invention of claim 3 , the external server replaces the filter for replacement when a predetermined usage time requiring replacement of the filter means based on the operation information has come. The filtering means is automatically ordered from a service shop, and the life-prolonging operation is characterized in that the filtering means is washed more frequently than the circulating operation.

According to the above configuration, the external server places an order for the replacement filtering means by the automatic ordering function, and the hot water device delays the service limit of the filtering means by the life extension operation that increases the frequency of washing the replacement filtering means. Therefore, the filtering capacity of the filtering means can be recovered by the life-prolonging operation in case of emergency, and the timing of the usage limit of the filtering means can be delayed while maintaining the sanitary condition of hot water.

According to the hot water system of the present invention, it is possible to place an order for parts at an appropriate time and to delay the expiration date of the parts.

It is a figure which shows the structure of the hot water system which concerns on the Example of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the structure of the water heater and bath heat source machine which concern on the Example of this invention. It is a figure which shows the structure of the purification apparatus based on the Example of this invention.

EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing this invention is demonstrated based on an Example.

As shown in FIG. 1, the hot water system 1 includes an external server 2, and a hot water supply device 4 and a water heating device 9 which are connected to the external server 2 via a communication network 3 such as the Internet. in use. The external server 2 is a computer equipped with a CPU, a memory, a storage device, etc., although not shown, and is used in a remote monitoring system for monitoring the operational status of the water heater 4 and the water heater 9 via the communication network 3. etc. are collected, stored, analyzed, etc., and commands for various operations are sent to the hot water system 1. In addition to the hot water system 1 , a plurality of remotely monitored water heaters and the like are connected to the external server 2 via the communication network 3 .

The water heater 4 includes a plurality of (for example, three) water heaters 4a, 4b, and 4c connected in parallel, and rotational operation for leveling the frequency of use of the plurality of water heaters 4a to 4c. It is composed of a system controller 5 for performing coordinated operation according to. The system controller 5 has a function of communicating with the external server 2 via the communication network 3 and operating the water heater 4 and the water heater 9 based on commands from the external server 2 .

A water supply passage 11 extends from a water supply pipe 6 connected to a water supply source to a plurality of water heaters 4a to 4c, respectively, and a hot water supply passage 12 extending from the plurality of water heaters 4a to 4c respectively supplies hot water to a bathroom, etc. 7 is connected. The hot water supply pipe 7 is provided with a plurality of faucets 7a and showers 7b. For example, when hot water supply is started from a plurality of faucets 7a and the combustion amount of one water heater is insufficient, the system controller 5 causes the plurality of water heaters 4a to 4c to operate in cooperation to achieve the combustion amount necessary for hot water supply. to control.

A supplementary water unit 7c (replenishing means) for supplying hot water to the bathtub 8 is provided, and the supplementary water unit 7c is connected to a water supply pipe 6 and a hot water pouring passage 7d branched from the hot water supply pipe 7. there is The bathtub 8 is provided with a pressure-detecting water level sensor 8a, and is replenished with tap water or warm water obtained by heating the tap water with the hot water supply device 4 from a replenishing water unit 7c so that the bath 8 reaches a predetermined water level.

Next, the plurality of water heaters 4a to 4c constituting the water heater 4 will be described. Since the plurality of water heaters 4a to 4c have the same configuration, the water heater 4a will be described first, and the other water heaters 4b and 4c will be described. omitted.
As shown in FIG. 2, the water heater 4a is a gas water heater that heats hot water using combustion heat of fuel gas. a burner 13, a heat exchanger 14 for heating tap water by exchanging heat with combustion gas generated by combustion of the burner 13, a neutralizer 15, a control section 16 for controlling the amount of combustion, and the like.

The heat exchanger 14 has a primary heat exchanger 14a that recovers the sensible heat of the combustion gas to heat the tap water and a secondary heat exchanger 14b that recovers the latent heat of the combustion gas to heat the tap water. The water supply passage 11 for supplying tap water is connected to the secondary heat exchanger 14b, the hot water supply passage 12 is connected to the primary heat exchanger 14a, and the primary heat exchanger 14a and the secondary heat exchanger 14b are connected to the intermediate passage 14c. are connected to form the heat exchanger 14 .

After completing the heat exchange in the heat exchanger 14, the combustion gas is exhausted to the outside of the water heater 4a. Part of the water vapor contained in the combustion gas is condensed in the secondary heat exchanger 14b to become acidic drain water. Drain water is collected in the drain pan 14d, flows into the neutralizer 15, is neutralized in the neutralizer 15, and is discharged to the outside.

The water supply passage 11 is provided with a distribution valve 18 capable of adjusting a distribution ratio for supplying clean water to the heat exchanger 14 and also supplying clean water to a bypass passage 17 bypassing the heat exchanger 14 . ing. A water supply temperature sensor 11a is provided in the water supply passage 11 to detect the temperature of tap water.

The hot water supply passage 12 mixes the hot water heated by the heat exchanger 14 with the tap water of the bypass passage 17 to supply the hot water to the hot water supply pipe 7 . The hot water supply passage 12 is provided with a hot water supply temperature sensor 12a for detecting the temperature of the temperature-controlled hot water and a flow rate sensor 12b for detecting the flow rate.

The control unit 16 controls the hot water supply operation of the water heater 4a. For example, according to the hot water supply target temperature set by the system controller 5, the combustion amount of the burner 13 and the distribution ratio of the distribution valve 18 are adjusted based on the detection signals of sensors such as the water supply temperature sensor 11a, and the hot water supply target temperature is adjusted. supply hot water. When some abnormality occurs in the water heater 4a, the control unit 16 transmits the abnormality occurrence information to the system controller 5. FIG.

The system controller 5 that has received the abnormality occurrence information from the control unit 16 transmits the abnormality occurrence information to the external server 2 . The external server 2 transmits the abnormality occurrence information via the communication network 3 to the maintenance base in charge of the location area of the hot water supply device 4 that transmitted the abnormality occurrence information. The person in charge of maintenance takes action based on the received abnormality occurrence information.

The control unit 16 also transmits to the system controller 5 hot water supply operation information including the combustion time, the number of times of combustion, the amount of combustion, etc. of the burner 13 in the hot water supply operation. The system controller 5 transmits to the external server 2 the hot water supply operation information received from the water heaters 4a, 4b and 4c. The external server 2 stores the hot water supply operation information received from the system controller 5 .

Next, the hot water device 9 performs a circulation operation to circulate hot water to maintain the sanitary condition of the hot water in the bathtub 8 and a heating operation to maintain the temperature of the hot water in the bathtub 8 will be described.
As shown in FIG. 1, the hot water device 9 (hot water device) includes a purifying device 21, a drug unit 22 (medicine injection means), and a bath heat source device . The purification device 21 is connected to the bathtub 8 by a bath return passage 24a and a bath going passage 24b. Further, the bath heat source machine 23 is connected to the purifying device 21 by a heat source machine forward passage 25a and a heat source machine return passage 25b.

As shown in FIG. 3, the purifying device 21 includes a five-way valve 21a, a filter 21b for trapping large foreign matter, a circulation pump 21c for circulating hot water in the bathtub 8, and a filter for turbidity of the hot water in the bathtub 8. A filtering tank 21d (filtering means) for removing impurities from hot water and a bath heat exchanger 21e for heating the hot water in the bathtub 8 are provided. Although illustration is omitted, the filter tank 21d contains, for example, a filter medium mainly composed of porous ceramic particles.

The filter 21b and the circulation pump 21c are arranged in a bath return passage 24a connected to the five-way valve 21a. The bath heat exchanger 21e is arranged in a bath passage 24b extending from the five-way valve 21a. Filtration forward passage 21f extending from the five-way valve 21a and connected to the top of the filtration tank 21d, a filtration return passage 21g extending from the bottom of the filtration tank 21d and connected to the five-way valve 21a, and the five-way valve 21a. A drainage passage 21h is provided extending from to an external drainage pipe (not shown). A medicine passage 22a extending from the medicine unit 22 is connected to the filtration forward passage 21f. The purifying device 21 also includes a circulation heating control section 21i (control means) and the like for controlling the circulation operation and the heating operation by driving the five-way valve 21a, the circulation pump 21c, and the like.

The drug unit 22 includes a drug container 22b containing a chlorine-based drug (for example, an aqueous solution of sodium hypochlorite, etc.) for sterilizing bacteria derived from the environment and the human body contained in the hot water of the bathtub 8, and a circulation heating control unit. It is equipped with a medicine valve 22c and the like for supplying medicine based on the command of 21i. During the circulation operation, the chemical is supplied from the chemical passage 22a to the forward filtration passage 21f so that the concentration of free residual chlorine in the hot water of the bathtub 8 satisfies the standard set by the ordinance or the like. Although illustration is omitted, the medicine unit 22 is provided with a measuring device for measuring the remaining amount of the medicine, for example, by a liquid level sensor or the like, and the measured value is transmitted to the circulation heating control section 21i.

The circulation heating control section 21i is communicably connected to the supplementary water unit 7c, and acquires the water level of the bathtub 8 detected by the water level sensor 8a via the supplementary water unit 7c. Then, for example, when the water level of the bathtub 8 exceeds a predetermined value, the circulation pump 21c is driven constantly or intermittently at predetermined time intervals to perform a circulation operation in which the chemical for sterilization is injected from the chemical unit 22. During circulation operation, the five-way valve 21a supplies hot water from the bathtub 8 supplied from the bath return passage 24a to the forward filtration passage 21f, and also supplies hot water from the filtration return passage 21g that has passed through the filtration tank 21d to the forward bath passage. 24b.

The bath heat source device 23 is, for example, a combustion type heat source device as shown in FIG. It includes a heat exchanger 23c and a neutralizer 23d for recovering sensible heat and latent heat of gas, and a heat source pump 23e (see FIG. 1) for circulating hot water. The hot water heated by the bath heat source machine 23 flows through the heat source machine return passage 25b, heats the hot water in the bathtub 8 by the bath heat exchanger 21e, and returns to the bath heat source machine 23 through the heat source machine outgoing passage 25a. The control unit 23a of the bath heat source device 23 is communicably connected to the circulation heating control unit 21i.

When the circulation heating control unit 21i detects that the temperature of the hot water in the bathtub 8 has dropped below a predetermined temperature by a bathtub temperature sensor 21j that detects the temperature of the hot water in the bathtub 8 provided in the purifier 21, for example, during the circulation operation. , the bath heat source device 23 is operated to heat the hot water in the bathtub 8 circulating in the bath heat exchanger 21e. When the bathtub temperature sensor 21j detects that the temperature of the hot water in the bathtub 8 has reached or exceeded a predetermined temperature, the bath heat source 23 is stopped. While the hot water in the bathtub 8 is circulating in this manner, the temperature of the hot water in the bathtub 8 is maintained by repeating the operation and stop of the bath heat source device 23. - 特許庁When an abnormality occurs in the water heater 9, the circulating heating control unit 21i transmits the abnormality occurrence information to the system controller 5, and receives the response of the person in charge of maintenance in the same manner as in the case of an abnormality in the water heater 4.

The circulating heating control unit 21i sends circulating heating operation information (operation information) including the circulation operation time and the number of times of circulation operation, the operation time and number of times of operation of the bath heat source unit 23, the remaining amount of medicine in the medicine unit 22, etc. to the system controller 5. Send. The system controller 5 transmits the received circulation heating operation information to the external server 2 . The external server 2 stores the circulation heating operation information received from the system controller 5 .

Next, automatic ordering by the external server 2 will be described.
Based on the circulation heating operation information received from the system controller 5, the external server 2 automatically supplies parts (replenishment replacement parts) such as replenishment chemicals and replacement filtration tanks 21d to service shops that handle aftermarket parts. It has an automatic ordering function that orders to This automatic ordering is done at an appropriate time before the parts that require replenishment or replacement reach their usage limit. The delivery date of the ordered parts is replied to the external server 2 .

Based on the answered delivery date, it is determined whether or not to execute the life extension operation of the part to be replenished and replaced. For example, the external server 2 has a delivery date response function for responding to the delivery date to the circulation heating control unit 21i via the system controller 5, and the circulation heating control unit 21i is a replenishment replacement target when the delivery date continues the circulation heating operation. Life extension operation is executed when it is determined that it will be later than the usage limit time of the part. In addition, when the external server 2 determines that the delivery date is later than the usage limit time when the circulation operation is continued, the circulation heating control unit 21i is instructed to execute the life extension operation via the system controller 5, and the circulation heating You may make it the control part 21i perform life extension operation. The usage limit time when the circulation operation is continued is predicted by the circulation heating control unit 21i or the external server 2 based on the circulation heating operation information so far.

Next, life extension operation will be described.
The hot water device 9 maintains the sanitary condition of the hot water in the bathtub 8 by the circulation operation, and if the sanitary condition cannot be maintained by the circulation operation, the use of the bathtub 8 is stopped or the bathtub 8 is used in a free-flowing state. . For example, replenishment medicine is ordered by the automatic ordering function of the external server 2 when the remaining amount of medicine in the medicine unit 22 reaches a predetermined amount that requires replenishment. Become. If the delivery date is later than the use limit time when the medicine is exhausted by the circulation operation, it becomes impossible to maintain the sanitary condition by the circulation operation after the use limit.

In such an emergency, in order to maintain the sanitary conditions during the circulation operation, the drug life-prolonging operation is performed. In this medicine life-prolonging operation, in order to maintain the water level of the bathtub 8, the frequency of water replenishment is increased more than the normal water replenishment performed by the replenishment water unit 7c based on the water level detected by the water level sensor 8a, and the medicine is injected by the medicine unit 22. Reduce quantity.

For example, the five-way valve 21a is adjusted so as to drain the bathtub 8, and after the hot water in the bathtub 8 is drained by driving the circulation pump 21c to lower the water level, the five-way valve 21a is adjusted so as to perform circulation operation. Then, water is replenished from the replenishing water unit 7c so as to return the lowered water level to the original water level, and while water is being replenished, circulation operation is performed to inject the chemical repeatedly. Since the bathtub 8 is supplemented with a constant concentration of chlorine by the chlorine contained in the tap water to be replenished by increasing the frequency of replenishing water, the injection amount of the chemical to be injected is reduced so as to satisfy the standard of free residual chlorine concentration. It is possible to delay the expiration date when the drug is used up.

Similarly, for the replacement filter tank 21d, an order is placed by the automatic ordering function of the external server 2 when, for example, the accumulated circulation operation time reaches a predetermined usage time set in advance for the filter tank 21d. If the delivery date is later than the preset predetermined time limit (usage limit) of the filtration tank 21d, the life extension operation of the filtration tank 21d is performed. In the life-prolonging operation of the filtration tank 21d, the frequency of automatic cleaning (washing frequency) of the filtration tank 21d is increased to once every 6 hours instead of once a day, for example, to recover the filtration capacity. , substantially delays the time when the filter tank 21d reaches its service limit. The turbidity of hot water in the bathtub 8 may be measured, and the usage limit of the filtration tank 21d may be set based on the turbidity.

Automatic cleaning of the filtration tank 21d is carried out by putting an amount of medicine larger than the normal injection amount from the medicine unit 22 into the filtration tank 21d and waiting for, for example, five minutes. Next, the five-way valve 21a is turned so that hot water in the bathtub 8 enters from the filtration return passage 21g, passes through the filtration tank 21d in the opposite direction to that during circulation operation, and is drained from the filtration forward passage 21f through the drainage passage 21h. adjust. Then, by driving the circulation pump 21c, the impurities trapped in the filtration tank 21d are discharged together with the hot water of the bathtub 8 flowing in the filtration tank 21d in the direction opposite to that during the circulation operation. Finally, the five-way valve 21a is configured so that the hot water in the bathtub 8 enters from the filtration outgoing passage 21f, passes through the filtration tank 21d in the same forward direction as during the circulation operation, and is discharged from the filtration return passage 21g through the drainage passage 21h. , and after the hot water in the bathtub 8 flowing forward through the filtration tank 21d is drained by driving the circulation pump 21c, the five-way valve 21a is adjusted so as to perform circulation operation.

The action and effects of the present invention will be described.
Based on the circulating heating operation information of the water heater 9, the external server 2 automatically orders replenishment replacement parts such as chemicals nearing the use limit and the filter tank 21d, and the water heater 9 uses the parts to be replenished or replaced. It is possible to execute a life-prolonging operation that delays the usage limit time, which is the limit. Therefore, it is possible to place an order for parts for replenishment or replacement at an appropriate time, and to delay the time when the parts to be replenished or replaced reach their use limit.

Further, when the water heater 9 or the external server 2 determines that the delivery date of the automatically ordered replenishment replacement parts is later than the usage limit time of the parts to be replenished or replaced, the water heater 9 supplies or replaces the parts to be replenished or replaced. life-sustaining operation. Therefore, in the case of an emergency in which the delivery date cannot be met even if parts for replenishment/replacement are ordered at an appropriate time, the life-prolonging operation can be performed to delay the time when the parts to be replenished or replaced reach their use limit.

The water heater 9 includes a filtration tank 21d for maintaining the sanitary condition of hot water in the bathtub 8 by circulation operation, a chemical unit 22, a supplementary water unit 7c, and a circulation heating control section 21i for controlling these. The part 21i controls the life extension operation so as to maintain a sanitary condition during the circulation operation. Therefore, it is possible to delay the time when the parts to be replenished or replaced reach their service limit while maintaining the sanitary condition of hot water and water by the life-prolonging operation in case of emergency.

The external server 2 orders replenishment chemicals by an automatic ordering function, and the water heater 9 increases the frequency of replenishing tap water and reduces the injection amount of the chemicals by extending the life of the chemicals to determine when the chemicals will run out. delay. Therefore, in case of emergency, the decrease in the concentration of free residual chlorine in hot water caused by reducing the injection amount of the chemical is compensated for by the chlorine contained in the tap water, and the chemical is used up while maintaining the sanitary condition of the hot water. You can delay the deadline.

In addition, the external server 2 uses the automatic ordering function to place an order for the replacement filtration tank 21d, and the water heater 9 extends the service life of the filtration tank 21d by increasing the frequency of washing the replacement filtration tank 21d. delay the timing of Therefore, the filter capacity of the filter tank 21d can be restored by the life-prolonging operation in case of emergency, and the timing of the use limit of the filter tank 21d can be delayed while maintaining the sanitary condition of hot water.

In the case of a pool, the bathtub 8 corresponds to the pool, and if it is not a hot water pool, the hot water supply device 4 and the bath heat source device 23 are not installed, but the circulation operation is performed to maintain the sanitary condition of the water in the pool. A hot water system 1 is configured by an external server 2 connected via a communication network 3 to a hot water apparatus having the same configuration as the hot water apparatus 9 . In addition to maintaining the sanitary condition of the bathtub 8, for example, when the delivery date of the neutralizer 23d of the bath heat source device 23 is delayed, the opportunity of heating operation during the circulation operation is reduced to prolong the life of the neutralizer 23d. It is also possible to maintain the hot water temperature of the bathtub 8 by increasing the amount of hot water supplied from the hot water supply device 4 .

In addition, those skilled in the art can implement various modifications to the above embodiments without departing from the scope of the present invention, and the present invention includes such modifications.

Reference Signs List 1: Hot water system 2: External server 3: Communication network 4: Hot water supply device 5: System controller 7c: Replenishing water unit (water replenishing means)
8: Bathtub (pool)
9: Hot water device (hot water device)
21: purification device 21a: 5-way valve 21c: circulation pump 21d: filtration tank (filtration means)
21h: Drainage passage 21i: Circulation heating control section (control means)
22: drug unit (drug injection means)
22a: drug passage 23: bath heat source device 24a: bath return passage 24b: bath going passage

Claims (5)

A hot water system comprising a hot water device that supplies hot water to a bathtub or a pool and circulates the hot water, and an external server to which the hot water device is connected via a communication network,
The external server has an automatic ordering function for automatically ordering replenishment replacement parts based on the operation information of the hot water supply system transmitted from the hot water supply system, and the replenishment replacement parts ordered by the automatic ordering function. has a delivery date reply function for transmitting the delivery date of
The hot water apparatus is configured to be capable of executing a life-prolonging operation for delaying the usage limit timing of the parts to be replenished or replaced with the ordered replenishment replacement parts, and the received delivery date continues the circulating operation. A hot water system characterized by executing the life-prolonging operation when it is determined that the time will be later than the service limit time . When the external server determines that the delivery date of the replenishment replacement parts ordered by the automatic ordering function will be later than the usage limit time when the circulating operation is continued, the external server instructs the hot water supply device to perform the life-prolonging operation. 2. The hot water system according to claim 1, wherein a command is given. The hot water apparatus has filtering means and chemical injection means for maintaining the sanitary condition of hot water by the circulation operation, water replenishing means for refilling the bathtub or pool with tap water, and control means for controlling these,
3. The hot water system according to claim 1 , wherein said control means controls said life extension operation so as to maintain a sanitary condition during said circulation operation . the external server automatically orders a replenishment drug from a service shop when the remaining amount of the drug in the drug injection means reaches a predetermined amount requiring replenishment based on the operation information;
4. The hot water system according to claim 3 , wherein said life-prolonging operation increases the frequency of water replenishment by said water replenishing means and reduces the amount of chemical injected by said chemical injection means compared to said circulation operation . The external server automatically orders replacement filtering means from a service shop when a predetermined usage time requiring replacement of the filtering means based on the operation information has come, and
4. The hot water system according to claim 3 , wherein the life extension operation increases the cleaning frequency of the filtering means compared to the circulation operation .

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