Hot water supply system

Patent metadata

Field	Value
Publication number	US-9879867-B2
Application number	US-201514695075-A
Country	US
Kind code	B2
Filing date	Apr 24, 2015
Priority date	Nov 14, 2014
Publication date	Jan 30, 2018
Grant date	Jan 30, 2018

Abstract

The present invention achieves energy saving and a decrease in facility cost for a hot water supply device by dividing a water receiving tank. A hot water supply system comprising: a water receiving tank receiving water supplied from a water supply source; a hot water storage tank connected to the water receiving tank via a connection pipe and storing hot water and supplying hot water to a hot water supply load; and a hot water supply device supplying the water stored in the hot water storage tank. The water receiving tank including: a temperature non-raising water receiving tank storing water supplied from the water supply source, the temperature non-raising water receiving tank, a general water supply pipe performing general water supply being connected; a temperature raising water receiving tank storing the water supplied from the water supply source and supplying the stored water to the hot water storage tank; and a preheating device preheating the water stored in the temperature raising water receiving tank.

First claim

The invention claimed is:

1. A hot water supply system comprising:
a water receiving tank receiving water supplied from a water supply source;
a hot water storage tank connected to the water receiving tank via a connection pipe and storing hot water, and supplying hot water to a hot water supply load; and
a hot water supply device supplying the water stored in the hot water storage tank,
the water receiving tank including:
a temperature non-raising water receiving tank storing water supplied from the water supply source, the temperature non-raising water receiving tank being connected with a general water supply pipe performing general water supply;
a temperature raising water receiving tank storing the water supplied from the water supply source and supplying the stored water to the hot water storage tank; and
a preheating device preheating the water stored in the temperature raising water receiving tank, wherein:
a capacity of the temperature non-raising water receiving tank is obtained by subtracting a capacity of the temperature raising water receiving tank from a plan one day use amount of water of a facility where the hot water supply system is installed, and
the capacity of the temperature raising water receiving tank is set based on the plan one day use amount of water and a planned use temperature, and a set temperature of the hot water stored in the hot water storage tank.

2. The hot water supply system of claim 1 , wherein
the hot water supply device is a boiler-type hot water supply device.

3. The hot water supply system of claim 1 , wherein
the preheating device is a heat pump-type hot water supply device.

4. The hot water supply system of claim 1 , wherein
the preheating device preheats the water by using nighttime electric power.

5. The hot water supply system of claim 1 , wherein
a temperature of the water preheated in the preheating device is set based on a temperature of the water supplied from the water supply source and a set temperature of the hot water in the hot water storage tank.

Assignees

• Mitsubishi Electric Corp

Inventors

• Sugimura Mitsuo

Classifications

• F24D3/10 Primary

  Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks {; Hydraulic components of a central heating system} · CPC title

• E03B7/045

  diverting initially cold water in warm water supply · CPC title

• F24D3/1058

  disposition of pipes and pipe connections · CPC title

• F24D3/082

  Hot water storage tanks specially adapted therefor · CPC title

• Y02A20/411

  Water saving techniques at user level · CPC title