JP2014013126A - Hot-water supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot-water supply system in which comfort for use can be ensured without impairing energy saving performance by networking a hot-water heater and faucets.SOLUTION: In the case where opening of any faucet is detected, whether it is single use of a kitchen faucet 4 or not is first determined. In the case of single use, it is next determined whether a present hot water pouring amount is within 5 L/min and if applicable, an indicator lamp 6d of a kitchen remote controller 6b is turned on, thereby notifying a user of a proper flow rate usage state. In the case where it is not the single use of the kitchen faucet 4, whether it is single use of a shower 3a or not is next determined. In the case where it is the single use of the shower 3a, it is next determined whether the present hot water pouring amount is within 10 L/min. If applicable, an indicator lamp 6e of a bathroom remote controller 6c is turned on.

Description

  The present invention relates to a hot water supply system, and more particularly, to a hot water supply system that can ensure comfort of use without impairing energy saving performance by networking a water heater and each faucet.

  Conventionally, in a hot water supply system in which hot water is supplied by connecting a water heater and one or more faucets by piping, a hot water supply remote control installed in a kitchen, bathroom, etc. can be used to perform hot water operation / stop commands, hot water temperature setting, etc. It is common. In addition, some water heater remote controllers have a model with a function of notifying the user of the optimal amount of hot water by lighting the lamp for the purpose of raising awareness of energy saving. Specifically, the lamp of the kitchen remote controller is turned on when the amount of hot water discharged from the water heater is, for example, 5 L / min or less, and the lamp of the bathroom remote controller is turned on when the amount of discharged hot water is, for example, 10 L / min or less. This function enables the user to recognize the appropriate flow rate in the kitchen and bathroom, which is effective in improving energy saving awareness.

  However, in the conventional hot water supply system, it is not possible to determine which faucet is in use from the hot water supply side. For example, when a bathroom shower is used at 5 L / min or less, the kitchen remote control lamp is turned on in addition to the bathroom remote control lamp. . On the other hand, when the kitchen faucet is used at 5 L / min or less, the bathroom remote control lamp is also turned on.

  On the other hand, for example, a technique disclosed in Patent Document 1 has been proposed as a technique for specifying a terminal-side hot water using device (such as a faucet). In this technology, operation data such as a set temperature and water amount data are transmitted and received between the water heater and the hot water using device. The water heater determines whether the hot water using device is used alone or simultaneously with other devices based on the received water volume data of the hot water using device and its own water volume data. If it is used independently, the set temperature of the hot water heater is set to the hot water using device. Change to the set temperature. When the hot water use device receives data from the water heater that it is used simultaneously with other devices, the hot water supply device stops supplying hot water.

JP 2003-090605 A

  According to the technique of Document 1, it is possible to distinguish between single use or simultaneous use, but this document discloses a technique for controlling the amount of hot water discharged from each faucet and the appropriate flow rate display lamp lighting of the remote controller in association with each other. Not.

The present invention provides a hot water supply system control technique that correlates the amount of hot water discharged from each faucet and lighting of an appropriate flow rate display lamp of a remote controller.
The gist of the present invention is as follows. That is, the hot water supply system according to the present invention is:
(1) Two or more water faucets including a kitchen faucet and a faucet with a shower, and a water heater operation command function and / or an operating state display function, which receive hot water supply from the water heater through a pipe. A hot water supply system comprising a kitchen remote control and a bathroom remote control, and
Faucet discharge amount detection means for detecting the amount of discharge from each faucet,
The kitchen remote control and bathroom remote control each have an appropriate flow rate indicator lamp that lights up when the amount of hot water is less than the amount of hot water determined as the appropriate flow rate, and
When the kitchen faucet is used alone and when the amount of tapping water below the first proper amount of tapping is detected, only the appropriate flow rate indicator lamp of the kitchen remote control is turned on,
And a means for turning on only an appropriate flow rate display lamp of the bathroom remote controller when the shower faucet is used alone and when the amount of discharged hot water below the second appropriate amount of hot water is detected.
(2) In the invention of (1), the first proper amount of hot water is set to 5 L / min or less, and the second amount of proper hot water is set to 10 L / min or less.

  According to each invention, there is an effect that the user can visually determine an appropriate amount of hot water in the kitchen or bathroom shower and can improve energy saving awareness.

It is a figure showing composition of hot water supply system 1 concerning one embodiment of the present invention. It is a figure which shows the hot water supply control flow of the hot water supply system.

  Hereinafter, each embodiment of the hot water supply system according to the present invention will be described in more detail with reference to FIGS. Needless to say, the scope of the present invention is described in the claims and is not limited to the following embodiments.

  Referring to FIG. 1, a hot water supply system 1 according to this embodiment includes hot water heated by a hot water heater 2, a water supply pipe W <b> 2 that branches off at a branch portion P <b> 1 of the water supply pipe W <b> 1, and supplies water to the hot water heater 2. Water faucets 3, 4, and 5 are provided on the terminal side branched from the hot water supply pipe H1, water supply pipe W1, and hot water supply pipe H1 for supplying to the faucet 3 side. Of these, the faucet 3 is a mixing faucet with a shower disposed in the bathroom, the faucet 4 is a mixing faucet disposed in the kitchen, and the faucet 5 is a single faucet disposed in the washroom. The mixing faucet with shower 3 is provided with a switching knob 3b, and is configured to be switched to the shower 3a side or the faucet 3c side by a knob operation.

The water heater 2 includes a burner 2b and a heat exchanger 2c inside the housing 2a. The water supply pipe W2 is connected to the internal pipe W2 ′, and further connected to the inlet side of the heat exchanger 2c. Further, the outlet side of the heat exchanger 2c is connected to the hot water supply pipe H1 via the internal pipe H1 ′. A bypass pipe W2 ″ is provided between the water supply pipe W2 ′ and the hot water supply pipe H1 ′ so that the water supply bypasses the heat exchanger 2c. A flow rate control valve 2d is provided in the bypass pipe W2 ″ path. Is intervening.
A water amount sensor S1 and an incoming water temperature sensor S2 are interposed in the water supply pipe W2 ′ path. A hot water temperature sensor S3 and a flow rate control valve 2e are interposed in the pipe section H1 ′. Further, flow rate sensors S4 to S6 are respectively provided on the hot water supply pipe side of the water taps 3, 4, and 5 so as to be able to detect the opening. In addition, the mixing tap 3 is provided with a switching detection sensor S7 on the switching knob 3b, so that the shower use can be detected.

Next, the control system of the hot water supply system 1 is installed in the hot water heater 2 and controls the operation control and hot water temperature control of the system, the kitchen remote control 6b installed in the kitchen, and the bathroom remote control 6c installed in the bathroom. , And the above-described sensors S1 to S7.
The kitchen remote control 6b and bathroom remote control 6c are provided with command means necessary for hot water supply control such as operation SW and hot water supply temperature setting, respectively.

  Furthermore, the kitchen remote controller 6b is provided with an appropriate flow rate indicator lamp (lighting of the kitchen remote controller lamp as an appropriate flow rate range when the amount of hot water discharged from the kitchen tap 4 is 5 L / min or less based on the signal from the flow sensor S5. Hereinafter, a display lamp 6d is abbreviated as appropriate. On the bathroom remote controller 6c, the lamp of the bathroom remote controller 6c is turned on as an appropriate flow rate range when the amount of hot water discharged from the shower 3a is 10 L / min or less based on the signals from the flow sensor S4 and the switching detection sensor S7. A display lamp 6e is provided. With the display lamps 6d and 6e, the user can determine whether the amount of hot water in the kitchen or bathroom is appropriate, and can improve the awareness of energy saving.

  The control unit 6 includes a microcomputer, a storage unit, an I / F unit, etc. (all not shown) having a CPU, a ROM, a RAM, and the like as main components, and detection values sent from each sensor and the remote control 6b side. Based on the requirements, the amount of hot water and hot water supply temperature can be controlled arbitrarily by adjusting the opening of the flow control valve 2d and flow control valve 2e and the combustion amount of the burner 2b. Has been.

  Next, an appropriate flow rate display control flow when the faucets 3 to 5 are opened will be described with reference to FIG. It is assumed that all the faucets are closed in the initial state, and the display lamps 6d and 6e of each remote controller are in the extinguished state (S100). When the opening of any of the faucets is detected from this state (S101), it is first determined whether or not the kitchen faucet 4 is used alone (S102). When it is used alone (YES in S102), it is next determined whether or not the current amount of hot water is within 5 L / min (S103).

If it is within 5 L / min (YES in S103), the display lamp 6d of the kitchen remote control 6b is turned on (S104) to inform the user that the proper flow rate is being used. If NO in S103, that is, if it exceeds 5 L / min, the display lamp 6d continues to be turned off until the use of the faucet is stopped (NO in S108).
Thereafter, when the use of the water faucet has ended (YES in S108), the flow returns to S100 and the above-described appropriate flow rate display control is repeatedly performed.

  If NO in S102, that is, if the kitchen faucet 4 is not used alone, it is next determined whether or not the bathroom shower 3a is used alone (S105). When the shower 3a is used alone (YES in S105), it is next determined whether or not the current amount of hot water is within 10 L / min (S106).

If it is within 10 L / min (YES in S106), the display lamp 6e of the bathroom remote control 6c is turned on (S107) to inform the user that it is energy saving use. If NO in S106, that is, if it exceeds 10 L / min, the display lamp 6e continues to be turned off until the use of the faucet is stopped (NO in S108).
When the use of the faucet has ended (YES in S108), the process returns to S100 and the above-described hot water control is repeated.

If NO in S105, that is, when the plurality of faucets are used at the same time, or when the kitchen faucet 4 and the shower are not used alone (for example, the faucet 5 is used alone), the display lamps of all the remote controllers are kept off.
When the use of the faucet has ended (YES in S108), the process returns to S100 and the above-described hot water control is repeated.

  In this embodiment, an example is shown in which the display lamp is turned on as an appropriate flow rate range when the kitchen remote control is 5 L / min or less and the bathroom remote control is 10 L / min or less. The appropriate flow rate range can be set.

  The present invention is widely applicable to a water heater that supplies hot water via a hot water supply pipe regardless of an energy source or a heating method (instantaneous type, hot water storage type).

DESCRIPTION OF SYMBOLS 1 ... Hot water supply system 2 ... Water heater 3, 4, 5 ... Water tap 6 ... Control part 6b ... Kitchen remote control 6c ... Bathroom remote control 6d, 6e ··· Appropriate flow rate display lamp S1 ··· Water volume sensor S2 ··· Inlet temperature sensor S3 · · · Hot water temperature sensor S4 to S6 ··· Flow rate sensor S7 ··· Switch detection Sensor

Claims (2)

A water heater,
Two or more faucets, including kitchen faucets and shower faucets, that receive hot water supply from a water heater via piping;
A kitchen remote controller and a bathroom remote controller having a water heater operation command function and / or an operation state display function;
A hot water supply system comprising:
Faucet discharge amount detection means for detecting the amount of discharge from each faucet,
The kitchen remote control and bathroom remote control each have an appropriate flow rate indicator lamp that lights up when the amount of hot water is less than the amount of hot water determined as the appropriate flow rate, and
When the kitchen faucet is used alone and when the amount of tapping water below the first proper amount of tapping is detected, only the appropriate flow rate indicator lamp of the kitchen remote control is turned on,
When the shower faucet is used alone, and when the amount of hot water below the second appropriate amount of hot water is detected, only the appropriate flow rate indicator lamp of the bathroom remote control is turned on,
A hot water supply system comprising: 2. The hot water supply system according to claim 1, wherein the first appropriate amount of hot water is set to 5 L / min or less, and the second appropriate amount of hot water is set to 10 L / min or less.

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