JPS59131858A - Water heater making use of heat of hot spring - Google Patents

Abstract

PURPOSE:To save enormous fuel expense which has been required for heating fresh water by enabling to heat the fresh water to be used as rinsing hot water, by making use of heat possessed by a hot spring led to each hotel with a hot spring service from an outlet of a hot spring source through a main pipe as a heat source. CONSTITUTION:Fresh water fed to a pump 12 by pressure is decompressed through a decompressor 11 and fed into a spiral heat exchanger tube. Said fresh water is heated by heat of a hot spring in a tank 1 while the fresh water is being ascended within a spiral bent part in the spiral heat exchanger tube 4. In addition to the above, the fresh water heated within said spiral heat exchanger tube 4 is discharged on the bottom of the inside of a hot water tank 5 for reserving. The fresh water, moreover, is heated further while it is being ascended within said hot water tank 5. Then the fresh water in said hot water tank 5 is heated sufficiently and fed to each tap from a water supply tube 6. Consequently enormous fuel expense resulting from fresh water heretofore having been heated expressly by boiler, hot-water boiler, etc., can be saved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hot water system that utilizes hot spring heat, and more specifically, the present invention relates to a hot water system that utilizes hot spring heat, and more specifically, uses the heat of hot spring water that is drawn from a spout through a main pipe to each hot spring inn, etc. to use for hot spring baths, etc. Relates to equipment for heating fresh water.

Conventionally, hot spring water is drawn from a spout through a main pipe to each hot spring inn, etc., and is once stored in a storage tank, and then gradually sent to a bathtub, etc. from a water supply port provided on the side of the storage tank. However, since the hot spring water sent from the water supply port to the bathtub etc. is small compared to the hot spring water sent from the main pipe, the surplus hot spring water overflows from the storage tank. Moreover, even though this hot spring water had a temperature of about 80°C when it was sent out from the main pipe, it flowed out unnecessarily. On the other hand, what kind of fresh water is used as hot water? However, heating with boilers, water heaters, etc. requires a huge amount of fuel, which is one of the reasons why profits are limited. was.

Therefore, the present invention takes into account the points mentioned in 1-1 above, and makes it possible to use hot spring water, which has conventionally been drained out, and use this as a heat source to heat fresh water used as hot water, etc. This was done in order to save on the enormous amount of fuel that was required to heat the air.

Hereinafter, the present invention will be described in more detail with reference to illustrated embodiments.

In the figure, reference numeral 1 denotes a reservoir for temporarily storing the hot spring water sent out from the spout through the main pipe, and gradually sending fresh hot spring water to a bathtub (not shown) etc. from the water outlet 2 provided on the side wall etc. It's a tank. 3 is a main pipe for drawing hot spring water from the sprue to the storage tank. Reference numeral 4 denotes a spiral heat transfer tube disposed below the water surface in the storage tank, and has one end 4a connected to a fresh water supply pipe described later and the other end 4b connected to a hot water storage tank described later. In addition, the spiral heat transfer tube 4 is made of stainless steel, mild steel, etc. with a high thermal conductivity, and is designed to effectively heat Tokyo passing through it with the heat of the hot spring water in the storage tank 1. It is formed by extending vertically from the portion 4a toward the inner bottom of the storage tank 1, and then being bent in a spiral shape to near the upper end of the storage tank. Note that the end portion 4b of the spiral heat exchanger tube opens at the bottom of the hot water storage tank, which will be described later.

Reference numeral 5 denotes a hot water storage tank made of stainless steel, mild steel, or other material with a high heat conductivity coefficient for storing hot water sent out from the spiral heat transfer tube 4, and is disposed below the water surface in the storage tank. Further, the hot water storage tank 5 is sealed to prevent hot spring water from entering. Incidentally, the hot water storage tank 5 serves not only to store hot water but also to further heat the stored hot water.

The hot water in the core hot water storage tank 5 is sent through a water pipe 6 to a faucet in a bathroom, sink, washroom, etc. (not shown). 7 is a gate valve provided in the middle part of the water pipe 6. 8 is a fresh water supply pipe; 9 and 10 are gate valves provided in the middle of the water supply pipe; 11 is a pressure reducer provided between the gate valves 9 and 10 of the water supply pipe; and 2 is a pump. Note that 13 in the figure indicates hot spring water.

Next, the mode of operation of the present invention will be explained.

The fresh water pumped by the pump [2] is depressurized via the pressure reducer [1] and sent into the spiral heat transfer tube 4. The fire water is heated by the heat of the hot spring water in the storage tank while it ascends the spiral bend in the spiral heat transfer tube 4. The fresh water that is further heated within the spiral heat transfer w4 is discharged and stored at the bottom of the hot water storage tank 5. Note that the fresh water is further heated while rising in the hot water storage tank 5. Then, the fresh water in the hot water storage tank 5 is sufficiently heated and sent from the water pipe 6 to each faucet.

Since the present invention has the above-described structure and operation, it is possible to heat fresh water used for hot spring baths, etc. by utilizing the heat of hot spring water, which was conventionally forced to flow out. Therefore, it is possible to save a huge amount of fuel costs, which would have been required in the past by heating the water using boilers, water heaters, etc., and it is possible to greatly increase profits.

In addition, it is mechanically simple and can be easily installed, has few breakdowns, and is easy to maintain and manage.

[Brief explanation of the drawing]

Drawing: is an explanatory view of one example of the present invention. 1: Storage tank 4: Spiral heat transfer tube 5: Hot water storage tank Patent applicant: Kozo Kodokoro

Claims (1)

[Claims] Inside the hot spring water storage tank A storage tank that is placed below the water surface and extends vertically from one end toward the bottom of the storage tank in order to warm the fresh water that is pumped from one end with the hot spring water in the storage tank. A helical heat exchanger tube having a high heat conduction coefficient, which is bent in a spiral shape up to the vicinity of the upper end, and the other end is opened at the inner bottom of the hot water storage tank described below, and discharge from the other end of the helical heat exchanger tube. A hot water system using heat from a hot spring, comprising a closed hot water storage tank with a high thermal conductivity for storing and heating hot water.