WO-2026094600-A1 - HOT WATER SUPPLY SYSTEM, HOT WATER SUPPLY METHOD, AND PROGRAM

WO2026094600A1WO 2026094600 A1WO2026094600 A1WO 2026094600A1WO-2026094600-A1

Abstract

This hot water supply system (10) comprises: a first hot water supply device (27); a second hot water supply device (26) having a lower hot water discharge pressure than the first hot water supply device (27); a solenoid valve (29) for controlling the supply of hot water from the first hot water supply device (27); a plurality of required hot water amount measurement units (28d) provided to each of a plurality of residences (51); an acquisition unit for acquiring, from each of the plurality of required hot water amount measurement units (28d), first information indicating the amount of hot water required in the corresponding residence, second information indicating the amount of hot water that can be supplied by each of the first hot water supply device (27) and the second hot water supply device (26), and third information indicating the amount of electrical power exchanged between the plurality of residences (51) and the outside of the plurality of residences (51); and a control unit (255) that controls the solenoid valve (29) on the basis of the acquired first information, second information, and third information.

Inventors

SAKUMA, TOSHIYUKI

Assignees

パナソニックＩＰマネジメント株式会社

Dates

Publication Date: 20260507
Application Date: 20251010
Priority Date: 20241030

Claims (15)

The first hot water supply system, A second hot water supply system having a lower hot water output pressure than the first hot water supply system, A solenoid valve for controlling the hot water supply from the first hot water supply device, Multiple hot water volume measurement units are installed in each of the multiple dwelling units, An acquisition unit that acquires from each of the plurality of requested hot water volume measuring units first information indicating the amount of hot water required in the corresponding dwelling unit, second information indicating the amount of hot water that can be supplied by the first hot water supply device and the second hot water supply device, and third information indicating the amount of electricity exchanged between the plurality of dwelling units and the outside of the plurality of dwelling units, The system includes a control unit that controls the solenoid valve based on the acquired first information, second information, and third information. Hot water supply system.
Furthermore, it includes a calculation unit that calculates the amount of electricity based on the amount of electricity generated from the power generation system and the amount of electricity consumed in the multiple dwelling units. The hot water supply system according to claim 1.
The first hot water supply device is a gas water heater that generates electricity when producing hot water. The second hot water supply device is an electric water heater that consumes electricity to produce hot water. The hot water supply system according to claim 1 or 2.
The control unit, If the amount of power indicated by the third information is greater than or equal to a predetermined threshold, and the amount of hot water that the second hot water supply device can supply, as indicated by the second information, is greater than or equal to a predetermined threshold, the solenoid valve is controlled to a closed state. If the amount of power indicated by the third information is less than a predetermined threshold, or if the amount of hot water that the second hot water supply device can supply, as indicated by the second information, is less than a predetermined threshold, the solenoid valve is controlled to be in an open state. The hot water supply system according to claim 1 or 2.
Multiple of the aforementioned first hot water supply devices, The system comprises a plurality of solenoid valves for controlling the supply of hot water from each of the plurality of first hot water supply devices, The second information indicates the amount of hot water that can be supplied by each of the multiple first hot water supply devices and the second hot water supply devices. The control unit controls at least one of the plurality of solenoid valves. The hot water supply system according to claim 1 or 2.
The control unit identifies a dwelling unit among the plurality of dwelling units that is requesting hot water supply based on the first information, and controls the solenoid valve located closest to the identified dwelling unit among the plurality of solenoid valves with priority over the other solenoid valves. The hot water supply system according to claim 5.
The control unit controls the solenoid valve so that the amount of hot water supplied is equal to or greater than the sum of the required hot water amounts determined based on the first information obtained from each of the plurality of required hot water amount measuring units. The hot water supply system according to claim 1 or 2.
Furthermore, the control unit instructs the first hot water supply device and the second hot water supply device to generate hot water. The hot water supply system according to claim 1 or 2.
The control unit, assuming that it has instructed the first hot water supply unit to generate hot water, instructs the first hot water supply unit to generate hot water if the amount of power indicated by the third information falls below a predetermined threshold. The hot water supply system according to claim 8.
The control unit, assuming that it has instructed the second hot water supply unit to generate hot water, instructs the second hot water supply unit to generate hot water if the amount of power indicated by the third information exceeds a predetermined threshold. The hot water supply system according to claim 8.
Furthermore, the power generation system comprises the first hot water supply device and a solar power generation system. The calculation unit calculates the amount of electricity exchanged between the multiple dwelling units and the outside of the multiple dwelling units, taking into consideration the amount of electricity generated by the first hot water supply device and the solar power generation system. The hot water supply system according to claim 2.
Furthermore, the power generation system includes an energy storage system or a V2X (Vehicle to X) system capable of charging and discharging the secondary battery of an electric vehicle. The calculation unit calculates the amount of electricity exchanged between the multiple dwelling units and the outside of the multiple dwelling units, taking into consideration the amount of electricity that can be stored in the energy storage system or the secondary battery of the electric vehicle. The hot water supply system according to claim 2.
At least one of the aforementioned multiple dwelling units is equipped with a flow meter and a sub-solenoid valve, which are required to provide a predetermined amount of hot water. When the control unit supplies hot water in response to a request from equipment requiring a predetermined amount of hot water, it controls the sub-solenoid valve to a closed state when the amount of hot water supplied to the equipment requiring the predetermined amount of hot water, as measured by the flow meter, exceeds the predetermined amount of hot water. The hot water supply system according to claim 1 or 2.
A method of supplying hot water by computer, An acquisition step is to acquire first information indicating the amount of hot water required in a corresponding dwelling unit from multiple hot water demand measurement units installed in each of the multiple dwelling units, second information indicating the amount of hot water that can be supplied by the first hot water supply unit and the second hot water supply unit which has a lower hot water output pressure than the first hot water supply unit, and third information indicating the amount of electricity exchanged between the multiple dwelling units and the outside of the multiple dwelling units. The control step includes controlling a solenoid valve for controlling the supply of hot water from the first hot water supply device based on the acquired first information, second information, and third information, Hot water supply method.
A program for causing the computer to execute the hot water supply method described in claim 14.

Description

Hot water supply system, hot water supply method, and program This disclosure relates to a hot water supply system, a hot water supply method, and a program. Patent Document 1 discloses a technology for controlling the supply of hot water from a storage-type water heater installed in a house to a unit bathroom, kitchen, and other areas within the house. Figure 1 is a block diagram showing the functional configuration of a hot water supply system according to an embodiment.Figure 2A is a schematic diagram showing the flow of hot water when the first hot water supply device (high hot water pressure) according to the embodiment supplies hot water.Figure 2B is a schematic diagram showing the flow of hot water when the second hot water supply device (low hot water pressure) according to the embodiment supplies hot water.Figure 3 is a flowchart illustrating the operation of the hot water supply system according to the embodiment.Figure 4A is a flowchart illustrating the operation of an electric water heater in generating hot water.Figure 4B is a flowchart illustrating the operation of a gas water heater in generating hot water.Figure 5 is a schematic diagram showing an example of piping in a dwelling according to the embodiment. The embodiments will be described in detail below with reference to the drawings. Note that the embodiments described below are all comprehensive or specific examples. The numerical values, shapes, materials, components, arrangement and connection configurations of components, steps, and step order shown in the following embodiments are examples only and are not intended to limit this disclosure. Furthermore, components in the following embodiments that are not described in an independent claim will be described as optional components. Please note that each diagram is a schematic representation and not necessarily a strictly accurate depiction. Furthermore, in each diagram, substantially identical components are given the same reference numerals, and redundant explanations may be omitted or simplified. Furthermore, unless otherwise specified, the ordinal numbers such as "first," "second," etc., in this disclosure do not refer to the number or order of components, etc., but are used for the purpose of avoiding confusion and distinguishing similar components, etc. (Embodiment) [composition] First, the configuration of the hot water supply system according to the embodiment will be described. Figure 1 is a block diagram showing the functional configuration of the hot water supply system 10 according to the embodiment. In Figure 1, thick lines indicate the power supply path, and dashed lines indicate the communication path. The hot water supply system 10 is a system that can reduce the amount of electricity purchased for hot water supply when electric water heaters 26 and gas water heaters 27 are used in combination in multiple dwelling units 51 (private areas) included in the apartment building 50. In the apartment building 50, the electric water heaters 26 and gas water heaters 27 are not installed in each of the multiple dwelling units 51, but are shared by multiple dwelling units 51 (multiple residents). In other words, the hot water heated by the electric water heaters 26 and gas water heaters 27 is distributed to multiple dwelling units 51. A dwelling unit 51 is, for example, one of several private units included in a multi-unit building 50 such as a condominium or apartment building. It may be all the dwelling units 51 included in the multi-unit building 50, or it may be multiple dwelling units 51 included on a single floor of the multi-unit building 50. The hot water supply system 10, when the hot water heated by the electric water heater 26 and the gas water heater 27 is distributed to multiple dwelling units 51, can appropriately control the hot water supply and hot water generation of the electric water heater 26 and the gas water heater 27, thereby reducing the overall electricity purchase for all multiple dwelling units 51. As shown in Figure 1, the hot water supply system 10 comprises a solar power generation system 21, a power conditioner 22, a distribution board 23, a battery storage system 24, an EMS (Energy Management System) controller 25, an electric water heater 26, a gas water heater 27, an electric meter 28a, multiple water meters 28b, a gas meter 28c, multiple hot water volume meters 28d, and a solenoid valve 29. The grid power supply 70 is also shown in Figure 1. Each component of the hot water supply system 10 is installed in the apartment building 50. In the example shown in Figure 1, the hot water supply system 10 is equipped with one electric water heater 26 and one gas water heater 27. However, it may be equipped with two or more electric water heaters 26 or two or more gas water heaters 27. The hot water supply system 10 only needs to be equipped with a group of water heaters including one or more electric water heaters 26 and one or more gas water heaters 27. N