JPH0526514A - Hot water supplying device - Google Patents

Abstract

PURPOSE:To supply hot water of certain temperature without requiring a complex control with the latent heat and sensible heat of a plurality of phase changing, heat accumulating materials utilized in respective heat exchanging sections and, at the same time, regulate the temperature of the supply hot water by regulating the volume of the supplied bath hot water to respective heat exchanging sections. CONSTITUTION:A plurality of heat exchanging sections 3, control valve 10 that is capable of regulating the volume of water or hot water supplied to respective heat exchanging sections 3, phase changing, heat accumulating materials 5 that have different melting points respectively and utilize the latent heat and sensible heat following their melting and solidification are provided. Further, a heater 4 that heats respective phase changing, heat accumulating materials 5, mixing section 6 that mixes the hot water from respective heat exchanging sections 3, temperature sensor 14 that detects the temperature of the mixed hot water, auxiliary heater 15 provided on the downstream side of the temperature sensor 14, and control section 19 that controls the control valve 10 and auxiliary heater 15 based on a set hot water temperature or the output signal from the temperature sensor 14 are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention utilizes the latent heat of a plurality of phase change heat storage materials having different melting points in each heat exchange section to keep the bath water at a constant temperature and supply the amount of bath water to each heat exchange section. The present invention relates to a bathtub device capable of adjusting a hot water supply temperature and a hot water reheating temperature by adjusting the hot water supply device and a hot water supply device used for the bathtub device.

[0002]

2. Description of the Related Art Heretofore, a hot water supply device has been attached to a domestic bathtub, and water or hot water has been heated by the hot water supply device to bring the hot water to a temperature suitable for bathing. This water heater generally heats the bath water directly by burning the fuel of gas or kerosene.

[0003]

However, the water heater described above has the following problems.

That is, the water heater heats water or hot water by utilizing the energy of burning the fuel of gas or kerosene. In this case, the upper limit temperature and the lower limit temperature are set, and within that temperature range. Control is performed, and complicated control is required to maintain the hot water temperature at a constant temperature.

Further, since such a water heater burns gas or kerosene fuel and requires a combustion device or an exhaust duct for exhausting the combustion gas to the outside air, the water heater itself becomes large and compact. Could not be planned.

An object of the present invention is to provide a bathtub device and a hot water supply device used for the bathtub device, which can solve the above problems.

[0007]

According to the present invention, a plurality of heat exchange sections, a control valve capable of adjusting the amount of water or hot water supplied to each heat exchange section, and melting points which are different from each other are associated with melting and solidification. Phase change heat storage material in each heat exchange section that uses latent heat and sensible heat,
It is intended to provide a hot water supply device comprising a heater for heating each phase change heat storage material and a mixing section for mixing hot water from each heat exchange section.

Further, according to the present invention, a plurality of heat exchange sections, a control valve capable of adjusting the amount of water or hot water supplied to each heat exchange section, melting points differing, and latent heat and sensible heat associated with melting and solidification Utilizing the phase change heat storage material in each heat exchange section, a heater for heating each phase change heat storage material, a mixing section for mixing the hot water from each heat exchange section, and a temperature sensor for detecting the temperature of the mixed hot water. And an auxiliary heater provided on the downstream side of the temperature sensor, and a control unit for controlling the control valve and the auxiliary heater based on a set hot water temperature or an output signal from the temperature sensor.

[0009]

According to the present invention, the phase change heat storage material in each heat exchange section is heated by the heater in the hot water supply device to melt the heat storage material, and a large amount of heat is absorbed during the melting. The heat is stored in each heat exchanging portion to maintain a constant temperature for a long time. Then, water is supplied to each heat exchange section via the control valve, and at that time, the water is heated by utilizing latent heat and sensible heat of the phase change heat storage material of each heat exchange section to obtain hot water having a constant temperature, Moreover, since the melting point of the phase change heat storage material of each heat exchange part is different, the temperature of the hot water from each heat exchange part is different, and by mixing the hot water from each heat exchange part in the mixing part, It is used as hot water.

Further, the hot water supply device adjusts the temperature of the hot water to be mixed by increasing or decreasing the amount of hot water from each heat exchange part according to the supply amount to each heat exchange part by the control valve.

Further, when the temperature of the mixed hot water is detected by the temperature sensor and the temperature falls below the set temperature, the control unit actuates the control valve and the auxiliary heater based on the output signal, so that the hot water from the hot water supply device is kept constant. The temperature is adjusted. In this case, the amount of hot water supplied to each heat exchange unit is adjusted by the control valve to each heat exchange unit so that the hot water supply temperature at the time of mixing is set to the set temperature.

As described above, by using the phase change heat storage material, the hot water from the hot water supply apparatus can be easily controlled, and the hot water is heated by the heating heater via the phase change heat storage material, so that the hot water supply apparatus itself. Is intended to be compact.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described in detail with reference to the drawings. In the explanatory view of FIG.
The hot water supply device 2 according to the present invention is connected via the circulation flow path R, and the hot water supply device 2 reheats the hot water. In addition, B is an opening / closing valve provided in the circulation flow path R, and P is a circulation pump provided in the circulation flow path R.

As shown in FIG. 2, the hot water supply device 2 has
A plurality of heat exchange parts 3 connected in parallel to the bathtub 1, a heater 4 attached to each heat exchange part 3, a phase change heat storage material 5 housed in each heat exchange part 3 and having different melting points, It is composed of a mixing section 6 which mixes the hot water from each heat exchange section 3 and adjusts it to a predetermined temperature. The configuration will be described below in detail.

That is, the case 7 of the hot water supply device 2 is provided at the tip of the circulation flow path R from the bath tub 1, and a plurality of heat exchange parts 3 are arranged in parallel in the case 7 in the vertical direction. A heater 4 is mounted around the heat exchange portion 3 and is covered with a heat insulating material 9 provided on the inner peripheral surface of the case 7.

Further, in the present embodiment, a plurality of hot water supply pipes are provided on the upstream side of the circulation flow path R via a control valve 10 for adjusting the amount of hot water supply from the bathtub 1 to each heat exchange section 3. 11 are connected to each other, and each bath hot water supply pipe 11 is connected to the heat exchange unit 3. Further, the bath water supply pipe 11 is, as shown in FIG.
In the heat exchange section 3, the heat exchange section 3 is arranged in a meandering state, and
A fin 12 for heat exchange is attached to the outer peripheral surface thereof, and the heat from the phase change heat storage material 5 is received by the fin 12 and the hot water supply pipe 11
The bath water inside is heated.

The outlet side of the bath water supply pipe 11 is passed through the heat insulating material 9 to be connected to the circulation flow path R, and
Mixing section 6 for mixing heated bath water from each heat exchange section 3
Are formed and flow into the bathtub 1 through the circulation flow path R. In the present embodiment, as shown in FIG. 2, a mixing tank 6a is provided in the heat insulating material 9 of the case 7 which is a midway portion of the circulation flow path R as shown in FIG. The bath water supply pipe 11 of is connected.

In this embodiment, since the phase change heat storage materials 5 having different melting points are housed in the respective heat exchange parts 3, the hot water having different temperatures is discharged from the respective heat exchange parts 3 and the hot water supply pipe is supplied. Each of the bath waters is mixed in the mixing section 6 on the tapping side of 11 to obtain a bath water having a set temperature.

Therefore, as the phase-change heat storage material 5, liquid paraffin having 18 to 20 carbon atoms among paraffin hydrocarbons is used, the melting point is 35 to 45 ° C., and the carbon number is different (melting point is Liquid paraffin for each heat exchange part 3
It is stored in.

In the hot water supply device 2 in each heat exchange section 3, the phase change heat storage material 5 is heated by receiving heat from the heater 4 to melt the phase change heat storage material 5, and at that time, the heat storage material 5 is melted. Absorbs a large amount of heat and stores the heat. Then, the hot water is passed through the hot water supply pipes 11 into the heat exchange section 3 to heat the hot water by utilizing the latent heat and the sensible heat of the phase change heat storage material 5.

In the present invention, the latent heat of the phase change heat storage material 5 such as paraffin is used to reheat the bath water, and the latent heat of the phase change heat storage material 5 maintains a constant temperature for a long time. The temperature can be easily controlled.

A bellows seal 13 is provided in the upper part of each heat exchange section 3 so that the phase change heat storage material 5 moves in accordance with the expansion and contraction of the phase change heat storage material 5 due to melting and solidification. There is.

Further, in the present invention, the temperature of the hot water from the hot water supply device 2 is adjusted by operating the control valve 10 for adjusting the amount of hot water supplied from the bath 1 to each heat exchange section 3. The control valve 10 adjusts the amount of hot water supplied to each heat exchange unit 3 to control the temperature at which the heated hot water from each heat exchange unit 3 is mixed.

That is, the flow rate from the bathtub 1 to the circulation channel R is V,
The flow rate of the bath water supply pipe 11 to each heat exchange unit 3 is V1, respectively.
V2, V3, the bath water output temperature from each heat exchange section 3 is T, and the melting point of the phase change heat storage material 5 in each heat exchange section 3 is T1, respectively.
In the case of T2 and T3, the bath hot water output temperature T from each heat exchange unit 3 is calculated based on the following equation 1.

[0025]

[Equation 1]

[0026]

Therefore, in the present invention, the phase change heat storage material 5 is used.
By the melting point T1 of the phase change heat storage material 5 in each heat exchange part 3.
Since ~ T3 is a constant temperature, the output temperature from the hot water supply device 2 can be changed by adjusting the flow rates V1 to V3 of the bath hot water supply pipes 11 according to the above formula.

Further, in the mixing tank 6a of the circulation channel R,
A temperature sensor 14 that detects the temperature of the mixed bath water is attached, and an auxiliary heater 15 that additionally heats the bath water is provided in the middle of the circulation flow path R. If the temperature is lower than the set temperature, The auxiliary heater 15 is operated to bring it to a predetermined temperature. In this embodiment, as shown in FIG.
An auxiliary tank 17 having a fixed capacity is provided in the circulation channel R, and an auxiliary heater 15 is attached to the tank 17. Reference numeral 18 denotes a heater of the auxiliary heater 15.

Further, the hot water supply apparatus 2 is provided with a control unit 19, which controls the heating heater 4, the control valve 10, the temperature sensor 14, the auxiliary heater 15 and each heat exchange unit 3. A temperature sensor (not shown) provided and a hot water temperature setting device 20 are connected to each heater 8 in accordance with output signals from the hot water temperature setting device 20, the temperature sensor 14 and the temperature sensor of each heat exchange unit 3.
By controlling the operation of the control valve 10 and the auxiliary heater 15, the bath hot water output temperature is set to the set temperature.

In this embodiment, the hot water supply device 2 is connected to the bath tub 1 and the reheating structure is described in detail. However, as another embodiment, the hot water supply device 2 and the washbasin, the kitchen or the bath tub 1 is used.
It is also possible to connect and to supply hot water.

[0031]

Therefore, according to the present invention, the latent heat and sensible heat of the phase change heat storage material are used to heat the water or hot water, so that complicated control is not required in each heat exchange section. Further, it is possible to easily supply hot water at a constant temperature without being affected by the temperature of the hot water or hot water supplied to each heat exchange unit.

Further, by storing heat with the phase-change heat storage material, the hot water supply device does not require a fuel combustion device or an exhaust duct for exhausting combustion gas, so that the hot water supply device can be made compact.

[Brief description of drawings]

FIG. 1 is an explanatory view of a bathtub to which a hot water supply device according to the present invention is connected.

FIG. 2 is a cross-sectional explanatory view of the hot water supply device of the present invention.

[Explanation of symbols]

1 bathtub 2 water heater 3 heat exchange section 4 mixing section 5 Phase change heat storage material 10 control valve

Claims (2)

[Claims] 1. A plurality of heat exchanging parts 3, a control valve 10 capable of adjusting the amount of water or hot water supplied to each heat exchanging part 3, different melting points, and latent heat and sensible heat associated with melting and solidification. It is characterized by comprising a phase change heat storage material 5 in each heat exchange part to be used, a heater 4 for heating each phase change heat storage material 5, and a mixing part 6 for mixing the hot water from each heat exchange part 3. Hot water supply device. 2. A plurality of heat exchanging parts 3, a control valve 10 capable of adjusting the amount of water or hot water supplied to each heat exchanging part 3, different melting points, and latent heat and sensible heat associated with melting and solidification. The phase change heat storage material 5 in each heat exchange part to be used, the heater 4 for heating each phase change heat storage material 5, the mixing part 6 for mixing the hot water from each heat exchange part 3, and the temperature of the mixed hot water are A temperature sensor 14 for detection and an auxiliary heater 15 provided on the downstream side of the temperature sensor 14.
A hot water supply apparatus comprising: a control unit 19 for controlling the control valve 10 and the auxiliary heater 15 based on a set hot water temperature or an output signal from the temperature sensor 14.