JP3174054U - Hot spring circulation hot water supply system - Google Patents

Abstract

An energy-saving hot spring circulating hot water supply system capable of efficiently heating hot spring water without being affected by the outside air temperature without generating combustion gas containing air pollutants such as CO ₂ is proposed.
In a hot spring circulation hot water supply system 1, after collecting bathtub water from a bathtub 2 and filtering it through a filtration water tank 8 or the like, it is heated through a panel secondary heat exchanger 9 to be filtered to prevent Legionella bacteria. Sterilize and return to bathtub 2 again. Heated water for heating the bath water circulates between the expansion tank 21 and the panel secondary heat exchanger 9. The heated water stored in the expansion tank 21 is heat-exchanged with the heat pump system 32 and is kept at a predetermined temperature or higher. When the outside air temperature is below zero degrees Celsius, the electromagnetic induction heating device 42 is used together. . Unlike the case of using a general heating device such as a boiler, combustion gas containing air pollutants such as CO ₂ is not generated, and bath water can be efficiently heated.
[Selection] Figure 1

Description

The present invention relates to a hot spring circulation hot-water supply system used in a hot spring bath, etc. In particular, hot spring water that is returned to a bathtub without exhausting air pollutants such as CO ₂ and without being affected by high or low outside air temperature. It is related with the hot spring circulation hot-water supply system which can boil efficiently.

  Generally, hot water circulation hot water systems installed in hot spring baths, etc. are configured to filter the water discharged from the bathtub to remove foreign substances, and then reheat it through a heat exchanger to return it to the bathtub. Has been. A heating device such as a boiler is used to heat a heat medium supplied to the heat exchanger.

A combustion gas containing CO ₂ is generated from a heating device such as a boiler, which is not preferable from the viewpoint of preventing air pollution. In addition, combustion devices such as boilers generally have a problem that heating efficiency is poor. In view of such a point, Patent Document 1 proposes a hot spring circulation hot water supply system using a heat pump system that can efficiently heat hot spring water without generating combustion gas.

JP 2010-60185 A

  Here, when using a heat pump system, since it is influenced by the level of outside air temperature, hot spring water above a certain temperature may not be supplied efficiently.

  In view of this point, an object of the present invention is to propose a hot spring circulation hot water supply system that can efficiently heat hot spring water without being affected by the outside air temperature.

In order to solve the above problems, the present invention provides a foreign matter removing means for removing foreign matter contained in water collected from a bathtub, and heated water of 40 ° C. or higher by heating water after the foreign matter has been removed. In a hot spring circulation hot water supply system that has heating means to sterilize, and sterilization means for sterilizing hot water, and recirculates the hot water after sterilization to the bathtub,
The heating means includes
A heat pump system,
An expansion tank for storing heated water heated by the heat pump system;
An auxiliary heating device such as an electromagnetic induction heating device for heating the heated water supplied from the heat pump system to the expansion tank;
A heat exchanger that heats the water after the foreign matter has been removed by heated water supplied from the expansion tank;
When the ambient temperature of the heat pump system falls below a predetermined set temperature, the heat pump system includes a control unit that performs control to heat the heated water using the auxiliary heating device.

  Here, when the ambient temperature is equal to or higher than the set temperature, heating by the auxiliary heating device may be stopped. In order to accurately control the temperature of the heated water, the control unit, when the ambient temperature is equal to or higher than the set temperature, sets the temperature of the heated water supplied to the expansion tank to a predetermined set temperature. It is desirable to perform control to heat the heated water using the auxiliary heating device when below.

  Moreover, it is desirable that the hot spring circulation hot water supply system of the present invention has an auxiliary expansion tank inserted in a supply path for supplying heated water after being heated through the heat pump system to the expansion tank.

The hot spring circulation hot water supply system of the present invention includes a heat pump system and an expansion tank as a heating source for heating raw water used as a heat medium of a heat exchanger. The raw water can be efficiently heated without generating combustion gas containing air pollutants such as CO ₂ . In addition, when the ambient temperature is low, high-temperature heated water may not be obtained by the heat pump system. In particular, when the outside air temperature is below zero degrees, high-temperature heated water cannot be obtained. In the present invention, in such a case, since the heating water supplied to the expansion tank is heated together with the auxiliary heating device, the high-temperature heating water is always expanded without being affected by the level of the outside air temperature. Can be supplied to the tank. When an electromagnetic induction heating device is used as the auxiliary heating device, the heated water can be heated without generating combustion gas containing air pollutants such as CO ₂ .

It is a schematic block diagram of the hot spring circulation hot water supply system to which this invention is applied.

  The hot spring circulation hot water supply system to which the present invention is applied will be described below with reference to the drawings.

  FIG. 1 is a schematic configuration diagram showing a hot spring circulation hot water supply system. The hot spring circulation hot water supply system 1 includes a bathtub water circulation system A, a heating water circulation system B for reheating the bathtub water, and a heating water circulation system C for heating the heating water.

  The bathtub water circulation system A collects the water in the bathtub 2 from the suction port 4 of the bathtub 2 using the circulation pump 3 and recirculates the water from the hot water supply port 5 to the bathtub 2. In the bathtub water circulation system A, along the circulation path, a hair catcher 6 as a foreign matter removing means, a bag filter 7 and a filtered water tank 8, a panel secondary heat exchanger 9, and a Legionella countermeasure device (filtration) as a sterilizing means Device) 10 is arranged. A commercially available product can be used as the Legionella countermeasure device 10. The filtered water tank 8 is backwashed by timer management under the control of a centralized control panel 40 described later. Manual backwashing is also possible.

  The bathtub water discharged from the suction port 4 of the bathtub 2 is supplied to the filtered water tank 8 via the circulation pump 3 and the bag filter 7 after the hair is removed by the hair catcher 6. While flowing down the multilayer filter medium layer filled in the filtered water tank 8, the foreign matters contained in the bath water are filtered. The filtered water is supplied to the panel secondary heat exchanger 9 through the hot water temperature adjustment tank 12 and heated by heat exchange here, and then sterilized by Legionella through the filtration device 10. And it is supplied to the bathtub 2 from the hot water supply port 5 in the hot water state of 40-42 degreeC via the circulating hot water temperature control tank 11. FIG.

  The heated water circulation system B supplies heated water as a heat medium stored in the expansion tank 21 to the panel secondary heat exchanger 9 from the supply port 21a of the expansion tank 21 using the line circulation pump 22, After passing through, the recovery tank 21 returns to the expansion tank 21 from the recovery port 21b.

  The line circulation pump 22 is activated when, for example, the hot water temperature flowing from the filtered water tank 8 through the hot water temperature adjusting tank 12 becomes 42 ° C. or less, and the heated water stored in the expansion tank 21 is supplied to the panel secondary heat exchanger. 9 to circulate. In the panel secondary heat exchanger 9, heat exchange is performed between heated water and bathtub water, and the bathtub water is heated to a temperature of 42 ° C. or higher, for example.

  Next, the heated water circulation system C is a system for holding heated water stored in the expansion tank 21 at a predetermined temperature or higher, for example, 65 ° C. or higher, and includes a circulation pump (line pump) 31 and a heat pump system 32. ing. For example, the circulation pump 31 operates when the temperature of the heated water in the expansion tank 21 becomes 65 ° C. or less, and stops when it reaches 70 ° C. When the circulation pump 31 is activated, the heated water of the expansion tank 21 is sucked from the supply port 21c and heated through the water heat exchanger 33 of the heat pump system 32, and then again from the recovery port 21d of the expansion tank 21. Return to the expansion tank 21. For example, heated water is heated to 90 ° C. and returned to the expansion tank 21. Thus, the temperature of the heated water in the expansion tank 21 is maintained at a predetermined temperature by circulating the heated water stored in the expansion tank 21 and exchanging heat with the heat pump system 32.

  An electromagnetic induction heating device 42 as an auxiliary heating device is inserted in the reflux path 34 of the heated water from the heat pump system 32 to the expansion tank 21. An auxiliary expansion tank 35 is interposed between the electromagnetic induction heating device 42 and the expansion tank 21 in the reflux path 34 in order to suppress an increase in internal pressure in the expansion tank 21. By disposing the expansion tanks (35, 21) in two stages, the heated water can be circulated under an appropriate pressure.

  On the other hand, makeup water is supplied to the expansion tank 21 via a solenoid valve. Further, the hot water temperature adjustment tank 36 is supplied with hot water from the make-up water and the expansion tank 21, and for example, hot water adjusted to 42 ° C. can be supplied to the bathtub 2 via an electromagnetic valve.

  Here, the circulation control of the bath water and the heated water in each of the circulation systems A, B, and C is centrally controlled by a centralized control panel 40 (control unit) provided with a microcomputer. In the centralized control panel 40, when the ambient temperature (outside temperature) of the heat pump system 32 is lower than a preset temperature, the heating water is controlled using the electromagnetic induction heating device 42 which is an auxiliary heating device.

  In this example, the heating operation by the electromagnetic induction heating device 42 is performed when the outside air temperature falls below zero degrees Celsius, and the heating by the electromagnetic induction heating device 42 is stopped when the outside air temperature becomes zero degrees Celsius or more. In order to accurately control the temperature of the heating water supplied to the expansion tank 21, the temperature of the heating water supplied to the expansion tank 21 is set in advance when the outside air temperature is equal to or higher than zero degrees Celsius (set temperature). Even when the temperature falls below, the electromagnetic induction heating device 42 may be used together to perform the heating operation of the reflux water to the expansion tank 21.

As described above, in the hot spring circulation hot water supply system 1 of this example, the heating water used to heat the bath water is heated by the circulation system including the heat pump system 32 and the expansion tank 21. Therefore, the combustion gas containing an air pollutant like the case where a heating device such as a general boiler is used is not generated. Moreover, raw water can be efficiently heated. Therefore, an energy-saving hot spring circulation hot water supply system that does not generate CO ₂ or the like can be realized.

In cold districts and the like, if the ambient temperature is low, the heat pump system 32 may not be able to obtain hot heated water. In particular, when the outside air temperature is below zero degrees, high-temperature heated water cannot be obtained. In the hot spring circulation hot water supply system 1 of this example, the reflux water (heating water) supplied to the expansion tank 21 is heated together with the electromagnetic induction heating device 42. Therefore, it is possible to always return high-temperature heated water to the expansion tank without being affected by the level of the outside air temperature. Furthermore, since the electromagnetic induction heating device is used as the auxiliary heating device, the heating operation can be performed without generating combustion gas containing air pollutants such as CO ₂ .

DESCRIPTION OF SYMBOLS 1 Hot spring circulation hot water supply system A Bathtub water circulation system B Heated water circulation system C Heated water circulation system 2 Bathtub 3 Circulation pump 4 Suction port 5 Hot water supply port 6 Hair catcher 7 Bag filter 8 Filtration water tank 9 Panel secondary heat exchanger 10 Filtration device 11 Circulation hot water Temperature adjustment tank 12 Hot water temperature adjustment tank 21 Expansion tank 22 Line circulation pump 31 Circulation pump 32 Heat pump system 33 Water heat exchanger 34 Return path 35 Auxiliary expansion tank 36 Supply hot water temperature adjustment tank 40 Centralized control panel 42 Electromagnetic induction heating device

Claims (6)

Foreign matter removing means for removing foreign matter contained in water collected from the bathtub, heating means for heating the water after removing the foreign matter to warm water of 40 ° C. or higher, and sterilizing means for sterilizing the hot water In a hot spring circulation hot water supply system that recirculates hot water after sterilization to the bathtub,
The heating means includes
A heat pump system,
An expansion tank for storing heated water heated by the heat pump system;
An auxiliary heating device for heating the heated water supplied from the heat pump system to the expansion tank;
A heat exchanger that heats the water after the foreign matter has been removed by heated water supplied from the expansion tank;
A hot water circulation hot water supply, comprising: a control unit that performs control to heat the heated water using the auxiliary heating device when the ambient temperature of the heat pump system is lower than a preset temperature. system. In claim 1,
The hot spring circulation hot water supply system, wherein the auxiliary heating device is an electromagnetic induction heating device. In claim 1 or 2,
The said control part stops the heating by the said auxiliary heating apparatus, when the said ambient temperature is more than the said setting temperature, The hot spring circulation hot-water supply system characterized by the above-mentioned. In claim 1 or 2,
When the ambient temperature is equal to or higher than the set temperature, the control unit uses the auxiliary heating device when the temperature of the heated water supplied to the expansion tank falls below a predetermined set temperature. Hot spring circulation hot water supply system characterized by performing control to heat the water. In any one of claims 1 to 4,
The hot spring circulation hot water system, wherein the set temperature is zero degrees Celsius. In any one of claims 1 to 5,
Having an auxiliary expansion tank inserted in a supply path for supplying heated water after being heated through the heat pump system to the expansion tank;
A hot water circulation hot water supply system, wherein heated water is supplied to the expansion tank through the auxiliary expansion tank.

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