JPS5981467A - Bathhouse system by absorption heat pump - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] This invention is a bath that uses an absorption heat pump to efficiently recover waste water heat from a C bath, and uses this recovered heat to heat bath water and hot water supply water such as an upstream lagoon. It's about systems.

A large amount of hot spring water, bathtub lagoon, etc. (hereinafter collectively referred to as "waste") is emitted from shrine baths, etc., but such waste water still has a fairly high temperature. Despite this, the current situation is that it is being released as is.

Therefore, this invention provides a novel bath system that can heat water for hot water supply such as bath water and hot water using the heat of waste hot water released in large quantities from baths. It was made for the purpose of providing hot water for bathtubs and hot water supply by obtaining high-temperature hot water with an absorption L knee 1 pump that uses water heated by waste heat as a heat source water. By heating, the above objective can be achieved.

The invention will be explained in detail below with reference to embodiments shown in the drawings.

After the waste water discharged from a bathtub 1 and hot water 2 installed in a bathhouse is stored in a tank 3, it is filtered by a hair catcher filter 5 and sent to a heat exchanger 7 by a pump 6. In this heat exchanger 7, heat is exchanged between the heat source water circulating in the heat source water circulation system 9 by the pump 8 and the waste water, and the heat amount of the waste water is recovered into the heat source water.

The waste water may be discharged from the heat exchanger 7, but if it is circulated to the tank 3 via the line 10, the effect of recovering the heat retained in the waste hot water can be improved.

The heated heat source water is absorbed by the circulation system 9 and transferred to the heat pump 11.
is supplied to the evaporator 12 of. The absorption heat pump has an evaporator 12, an absorber 13, a generator 14 and a condenser 15.
．． 16, and the generator 14 has heating means using a driving heat source 17 (for example, city gas). The structure of such an absorption heat pump, the pumping of heat from heat source water, and the hot water heating mechanism are well known and commonly used.

In the absorption heat pump 11 used in this invention,
Two condensers, namely a first condenser 15 and a second condenser 1
6, and can operate only the generator 14 and the second condenser 16 to skip operation as a boiler.

Output hot water from the first condenser heated by the heat input from the evaporator 12 and the combustion heat input from the generator 14 in the absorption heat pump 11 is passed through the first crystal water circulation system 20 having a pump 18 and a heat exchanger 19. It is taken out and refluxed to the absorption pipe 1 to the absorber 13 of the pump. This first hot water circulation system 2
0 heat exchanger 19 is installed in a heat storage tank 21, and the water heated here is passed through a line 22 to the bathtub 1 and/or
Alternatively, it is supplied as hot water to the upstream hot water 2. Heat storage tank 21
Water absorption into the bathtub 1 and water absorption into the bathtub 1 is carried out through a line 24 from a water absorption tank 23 equipped with a code valve.

On the other hand, the output dry water from the second condenser 16 in the absorption bee 1-pump 11 is taken out by the second hot water circulation system 27 passing through the pump 25 and the heat exchanger 2G, and is circulated by the pump 28 in the bathtub 1. After the water in the condenser is heated through the heat exchanger 26, it is refluxed to the second condenser 16/\.

According to the system of the present invention described above, the heat source water for the absorption heat pump 11 can be heated by the waste heat, and output hot water of, for example, 60° C. can be obtained from this heat source water.

Output hot water taken out from the first condenser 15 into the first hot water circulation system 20 passes through the heat exchanger 19 to heat the hot water supply water in the heat storage tank 21 to about 45°C, and then cools down to about 40°C. Then, it is returned to the absorber 13 of the absorption heat pump 11.

On the other hand, the output water taken out from the second condenser 16 by the second hot water circulation system 27 passes through the heat exchanger 26 and heats the water in the bathtub 1 to about 45°C, and then rains down to about 50°C. Reflux to the second condenser.

In this way, the first condenser 15, the pump 18, the heat exchanger 1
A first drought circulation system 20 for heating water for hot water supply consisting of an absorber 9 and an absorber 13, and a second hot water circulation system 27 for heating a bathtub consisting of a second condenser, a pump 26 and a heat exchanger 26 are circulated independently of each other. Since it is a systematic system, it can bring about the following effects.

In other words, in the first hot water circulation system 20 which is the main circulation system of the absorption heat pump 11, new make-up water of low quality, which is constantly supplied from the water absorption pump 23, is passed through the heat exchanger 19 in the heat storage tank 21. In order to heat the water, the hot water taken out from the first condenser 15 is wetted to a relatively low temperature and then returned to the absorber. Therefore, the temperature of the absorber 13 of the absorption heat pump 11 is maintained at low humidity, so that a stable heat pump effect can be obtained.

In addition, even if the heat source water temperature decreases due to a decrease in the exhaust temperature at a3 in the heat exchanger 7 or the supply of heat source water is stopped, the pump 18 is stopped and the first hot water circulation system 20 is stopped, and the driving heat is A second drought circulation system 27 including the second condenser 16 and the heat exchanger 26 is created by controlling the combustion amount of the heat exchanger 11 and the second condenser 16 of the absorption heat pump 11 as a boiler. The water in the bathtub 1 can be heated by this.

As can be seen from the above explanation, according to the bath system of the present invention, the heat of the waste hot water released in large quantities from the bath can be effectively used.
It can be recovered and used effectively as a heating source for bathtubs and hot water supply, and the consumption of fuel conventionally required as a heating source for these can be greatly reduced. Also,
The generator of the absorption heat pump has a boiler function, and two condensers are installed so that bathtub heating and hot water heating can be done in separate systems, allowing switching to boiler operation even when the exhaust temperature drops. By doing so, the bathtub can be heated reliably.

[Brief explanation of the drawing]

Attachment (9) is an explanatory diagram showing an embodiment of the bath system of the present invention. 1...Bathtub, 2...Up-bath bath, 7,19.
Heat exchanger, 9... Heat source water circulation system, 11... Absorption heat pump, 12... Evaporator, 13... Absorber, 14
...generator, 15...first condenser, 16...second
Condenser, 17... Generator drive and boiler heat source, 20
first drought circulation system, 27... second hot water circulation system. Patent applicant: Sanyo Electric Co., Ltd. Tokyo Sanyo Electric Co., Ltd. Tokyo Gas Co., Ltd.

Claims (1)

[Claims] 1, evaporator, absorber, generator, first condenser and second,
Absorption heat pump with a condenser: A heat source water circulation system that circulates and supplies heat source water from the absorption heat pump 1 to the evaporator of the pump; -1 ~ A first hot water circulation system that returns the water to the absorber of the pump; a second hot water circulation system that takes out the output hot water from the second condenser of the absorption heat pump and returns it to the second condenser; the first condenser; A heat exchanger installed in the first hot water circulation system to heat water for hot water supply in the bathhouse with the hot water output from the second condenser; A heat exchanger installed in the second hot water circulation system; and a heat exchanger installed in the heat source water circulation system to heat the heat source water by waste water from the bath, and when the heat source water temperature can be maintained, the first Then, the second hot water circulation system is operated to heat the hot water supply water and the bathtub by the absorption heat pump action, and when the heat source water temperature drops, the first hot water circulation system is stopped, and the absorption heat pump generator and the bathtub are heated. A bath system using an absorption heat pump, characterized in that a bathtub can be heated by the second hot water circulation system by making the second condenser function as a boiler.