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Hot water supply system

A supply system, hot water technology, applied in residential hot water supply systems, water heaters, heating methods, etc.

Pending Publication Date: 2021-11-30
NORITZ CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the abnormality of the instant hot water operation has a particularity that cannot be easily detected by the person in charge of maintenance or the user.

Method used

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Examples

Experimental program
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Embodiment Construction

[0068] Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

[0069] figure 1 The hot water supply system SY shown includes: a hot water supply device A, a water inlet channel 1 , a hot water outlet channel 2 , and a return flow channel 3 . The hot water supply device A has a structure in which a heat exchanger 4 for heating hot water, a burner 5 , a control unit 6 , and the like are accommodated in a packing box 7 . The burner 5 is, for example, a gas burner or an oil burner. The heat exchanger 4 is configured using, for example, a finned tube or the like, and hot water fed into the heat exchanger 4 can be heated by combustion gas generated by the burner 5 .

[0070] The water inlet 1 is a pipe flow channel that connects an external water supply source 19 such as a water pipe and the water inlet 4a of the heat exchanger 4, and can enter water into the heat exchanger 4. Waterway 1a and external waterway 1...

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PUM

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Abstract

The invention provides a hot water supply system, which can be accurately observed under the condition that instant hot water operation is abnormal. A hot water supply system (SY) is provided with a control unit (6) capable of executing an abnormality determination process that, after the start of instant hot water operation, performs abnormality determination processing when the cumulative flow rate of hot water detected by a flow rate sensor (Sb) reaches a predetermined value of the cumulative flow rate at which the temperature detected by a normal temperature sensor (Sa) is expected to increase to a predetermined value or more. However, if the temperature detected by the temperature sensor (Sa) does not rise to a predetermined level or higher, it is determined whether or not the hot water supply terminal (8) is in an open state, and if the hot water supply terminal (8) is not in an open state, it is determined that there is an abnormality in instant hot water operation.

Description

technical field [0001] The present invention relates to a hot water supply system capable of instant hot water operation. [0002] Here, the "instant hot water operation" in this specification means that when the hot water supply terminal in the hot water supply system is turned on, hot water of a predetermined temperature or higher can immediately flow out from the hot water supply terminal. , which is used to circulate or stagnate heated hot water above a predetermined temperature in the hot water flow channel connected to the hot water supply terminal. Background technique [0003] As a hot water supply system, for example, as described in Patent Document 1 to Patent Document 3, there is a hot water supply system capable of instant hot water operation. [0004] Specifically, this hot water supply system can supply hot water heated by a heat exchanger to a hot water supply faucet through a hot water outlet channel. On the other hand, a return flow path including a pump i...

Claims

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Application Information

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IPC IPC(8): F24H1/14F24H9/00F24H9/18F24H9/20F24D17/00
CPCF24H1/14F24H9/0005F24H9/1809F24H9/2007F24D17/0026
Inventor 安川健一郎
Owner NORITZ CORP
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