JPH046852B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention makes it possible to save bath water by circulating the hot water in the bathtub, and also to reduce the amount of hot water supplied indoors from the bathtub and hot water tank for drinking and cooking. The present invention relates to a hot water circulation heating device that can heat hot water with high efficiency and save thermal energy.

[Conventional technology] When reusing hot water in a bathtub, conventionally, human hair, dirt, and other impurities in the bathtub water are filtered and removed, and the bathtub is reused in a completely clean state. However, they were reused several times and then discarded. or,
Heating of bathtub water and drinking water supplied indoors was generally performed using separate heaters.

[Problems to be Solved by the Invention] Therefore, in the conventional circulating use of bathtub water, only filtration is performed, which makes it impossible to sterilize the hot water, remove fat dispersed in the hot water, or remove odors.
It was becoming bad for my health. Furthermore, because the number of times the water can be recycled is limited, it has not resulted in fundamental water conservation. Furthermore, even when heating bathtub water or heating hot water, thermal energy cannot be saved, making it extremely uneconomical.

The present invention was made in consideration of the above circumstances, and makes it possible to improve the water saving rate by increasing the number of times bathtub hot water is circulated and used, and also makes it possible to save power consumption, save thermal energy, and increase the hot water temperature. The present invention provides a hot water circulation heating device.

[Means for Solving the Problems] The present invention sterilizes and filters bathtub water to enable long-term circulation use, and uses a heat pump to heat bathtub water and hot water for hot water supply. The high-temperature refrigerant gas from the heat pump is circulated in the following order: heating the hot water in the hot water tank → heating the bathtub → preheating the hot water in the hot water tank, making it possible to save thermal energy.

That is, the hot water circulation heating device according to the present invention,
A circulation tank in which a filtration device, a pump, and an active layer are connected through a pipe, in which hot water in the bathtub circulates, and a sterilization means for supplying ozone air into the bathtub hot water to sterilize it; A hot water tank that supplies high-temperature hot water, a heat pump that includes a fan that blows air that serves as a heat source into a refrigerant pipe line, and a compressor that compresses the refrigerant that has gained heat and converts it into high-temperature gas, and is installed in the circulation tank. A heating coil that heats hot water from the bathtub is connected between an outlet of the heat pump and an inlet of the heating coil, and is disposed on the water outlet side of the hot water tank. a high-temperature coil that heats hot water; and a high-temperature coil that is connected between the outlet of the heating coil and the inlet of the heat pump, and is disposed on the water inlet side of the hot water tank to reserve hot water in the hot water tank. It is characterized by being equipped with a low-temperature coil for heating.

[Examples] Examples illustrating the present invention will be specifically described below.

FIG. 1 is a piping system diagram of a hot water circulation heating device according to the present invention. This circulation heating device includes a circulation tank 2 that circulates and filters hot water in a bathtub 1, a heat pump 3 that compresses and heats refrigerant gas using outside air as a heat source, and a hot water tank 4 that stores hot water to supply indoors. It is equipped with

The circulation tank 2 has a filter 21 and a pump 2 inside.
2 are provided, and these are connected in series by a conduit. The bathtub 1 is an outgoing pipe 23.
and a return pipe 24, and the pump 2
2, the hot water in the bathtub 1 is guided into the filtration device 21 and filtered, and impurities such as human hair and dirt are removed. It's starting to gush inside. or,
An activation tank 25 filled with activated stones such as maifan stone and sulfur stone is connected between the filtration tank 21 and the pump 22. This activation tank 25 ion-exchanges the bath water that has passed through the filter 21 to return it to its original water quality, and also elutes active ingredients such as iron, magnesium, calcium, and sodium contained in the activated stones into the bath water. It has the effect of increasing the bathing effect. A sterilizing means 5 is provided at a position adjacent to such a circulation tank 2. The sterilizing means 5 is provided with an ozone generator 51 therein, and an air pipe 52 is led out from the ozone generator 51, and this air pipe 52 is connected to the vicinity of the outlet of the outgoing pipe 23. Therefore, ozone from the ozone generator 51 is supplied from the outgoing pipe 23 into the bathtub water and is ejected into the bathtub 1 together with the jet water flow. As a result, the oxidizing power of ozone sterilizes the bathtub water or decomposes fat, etc., and the bathtub bathwater is cleaned, so that the number of times the bathtub bathtub water is circulated can be dramatically increased. Therefore, it is possible to save bath water.

The circulation tank 2 is filled with a bathtub 1 by the operation of a pump 22.
A heating coil 8 is provided that heats the bathtub water drawn from inside through heat exchange. In this embodiment, the heating coil 8 is disposed within the activation tank 25 and is adapted to heat the bath water flowing into the activation tank 25. The heating coil 8 is supplied with refrigerant gas from a high-temperature coil 6, which will be described later, and heats the bath water through heat exchange. In FIG. 1, the thin arrows indicate the circulation path through which bath water is filtered and heated.

The heat pump 3 is provided with a compressor 31 that compresses refrigerant gas into high-temperature refrigerant gas, and a fan 32 that blows outside air onto the refrigerant gas pipe to exchange heat. This heat pump 3
The refrigerant gas is compressed to a high temperature using outside air as a heat source, and conventionally known types are used.

The hot water tank 4 has a water inlet 41 formed at the bottom thereof,
A water outlet 42 is formed in the upper part, and the water outlet 42
Hot water for drinking, etc., is supplied from the indoor faucet (not shown). This hot water tank 4
A high-temperature coil 6 and a low-temperature coil 7 are disposed inside to heat water stored inside by heat exchange. The high temperature coil 6 is provided at the upper part of the hot water tank 4, that is, on the water outlet 42 side. This high temperature coil 6 is connected between the heat pump 3 and the heating coil 8. That is, the inlet 6a of the high temperature coil 6 is connected to the refrigerant gas outlet 33 of the heat pump 3, and the inlet 6a of the high temperature coil 6 is connected to the refrigerant gas outlet 33 of the heat pump 3.
b is connected to the inlet 8a of the heating coil 8. Therefore, the high-temperature refrigerant gas compressed and heated by the heat pump 3 is first introduced into the high-temperature coil 6 and heats the water in the hot water tank 4 to a high temperature through heat exchange. It is guided to a heating coil 8 inside to heat the bathtub water. This allows a single heat pump to heat the bathtub water and the water in the hot water supply tank, thereby preventing waste of thermal energy.

The low temperature coil 7 is provided at the lower part of the hot water tank 4, that is, on the water inlet 41 side, and its inlet 7a is connected to the outlet 8b of the heating coil 8.
b is connected to the inlet 34 of the heat pump 3. Therefore, the refrigerant gas that heated the bathtub water in the heating coil 8 is introduced into the low-temperature coil 7 and preheats the water supplied into the hot water tank 4 from the water inlet 41, and then flows into the heat pump 3. The refrigerant gas is introduced into the refrigerant gas and compressed by the compressor 31 to become a high-temperature refrigerant gas again. The refrigerant gas introduced into the low-temperature coil 7 is the gas from the subcooled portion, and conventionally was returned to the heat pump 3 without being used at all. By using it, the amount of heat can be used effectively. 1st
In the figure, thick arrows indicate the refrigerant gas circulation path for the heat exchange.

In addition, 9 in the figure is a three-way valve provided between the high temperature coil 6, the heating coil 8, and the low temperature coil 7, and when heating the bathtub water is not required, the refrigerant gas is directly supplied from the high temperature coil 6. It leads to the low temperature coil 7.

In FIG. 2, a hot water tank 4 is connected to a circulation tank 2 via a gap 10.
This is an embodiment in which the heat pump 3 is integrally attached to the heat pump 3, and by being integrated, the device can be made smaller and the installation space can be reduced.

FIG. 3 is a Mollier diagram showing the heat exchange ability between the refrigerant gas and water in the hot water tank 4. FIG. When the heat pump 3 is used for normal heating operation of bathtub water, the cycle is A→B→C→D→E→A.
By introducing refrigerant gas into the low temperature coil 7
The cycle is A'→B'→B→C→D→E→A→A'. Therefore, the enthalpy (i ₂ - i ₁ ) of the A-A′ portion, which is the supercooled portion, is supplied to preheat the water in the hot water tank 4, and the temperature of the hot water can be increased without increasing power consumption. .

Note that various modifications can be made to the present invention. For example, ozone may be introduced into the circulation tank without being ejected into the bathtub.

[Effects of the Invention] As described above, according to the present invention, hot water in a bathtub is filtered and sterilized with ozone, and moreover, the hot water in the bathtub is ion-exchanged in an activation tank to return it to its original water quality. As the effectiveness of the bath increases, the number of times it can be recycled increases, making it possible to save on bath water. In addition, since the refrigerant gas from the heat pump is used in the order of heating the hot water tank, warming the bathtub water, and preheating the hot water tank according to the amount of thermal energy, it is possible to use thermal energy effectively, increasing the hot water temperature, Moreover, there is no need to increase the capacity of the compressor, and it is possible to reduce power consumption compared to conventional methods, and the outside air is completely eliminated.
When the temperature is below ℃, if a defrost device is installed appropriately, a single heat pump can continuously heat the hot water in the bathtub and hot water tank, making it easy to use as hot water can be used at any time, and the device can be made compact. effective.

[Brief explanation of drawings]

Fig. 1 is a piping system diagram of one embodiment of the present invention;
The figure is a plan view of another embodiment, and FIG. 3 is a Mollier diagram of the hot water supply system. 1...Bathtub, 2...Circulation tank, 3...Heat pump, 4
...Sterilization tank, 4a...Inlet, 4b...Outlet, 5...Sterilization means, 6...High temperature coil, 7...Low temperature coil, 6
a, 7a...Inlet, 6b, 7b...Outlet, 8...Heating coil, 21...Filter, 22...Pump, 31...
Compressor, 32...fan, 33...outlet,
34...Inlet, 41...Water inlet, 42...Water outlet.

Claims (1)

[Scope of Claims] 1. A circulation tank in which a filtration device and a pump activation tank are connected via a pipe line, in which hot water in the bathtub is circulated, and a sterilization means for supplying ozone air into the bathtub water to sterilize it. a hot water tank that supplies high-temperature hot water indoors; a heat pump that includes a fan that blows air that serves as a heat source onto a refrigerant pipe; and a compressor that compresses the refrigerant that has gained heat and converts it into high-temperature gas; a heating coil that is installed in the tank and heats hot water from the bathtub; and a heating coil that is connected between the outlet of the heat pump and the inlet of the heating coil and that is arranged on the water outlet side of the hot water tank. a high-temperature coil that heats hot water in the hot water tank; and a high-temperature coil that is connected between the outlet of the heating coil and the inlet of the heat pump and that is disposed on the water inlet side of the hot water tank. A hot water circulation heating device characterized by comprising: a low-temperature coil for preheating hot water;