JP3331123B2 - Bathtub temperature control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathtub temperature control device for controlling the temperature of hot water in a bathtub to a set temperature.

[0002]

2. Description of the Related Art A conventional bathtub temperature control device includes a pump for circulating hot water in a bathtub, a bath heater for heating hot water pumped by the pump, and a temperature detecting means for detecting hot water temperature in the bathtub. Hot water temperature setting means for setting hot water temperature, control means for controlling the bath heater according to a hot water temperature adjustment instruction signal from the hot water temperature setting means and a detected temperature signal from the temperature detecting means, Was composed by. In the conventional bathtub temperature control device, raising the temperature of hot water in the bathtub can be easily performed by heating the hot water with the bath heater while circulating the hot water in the bathtub with the pump. Was. However, in order to lower the temperature of the hot water in the bathtub, the user has to perform a troublesome operation of adding water and stirring. And even in this case,
There was an inconvenience that the temperature of the hot water could not be lowered to the set temperature while keeping the level of the hot water in the bathtub constant.

[0003]

SUMMARY OF THE INVENTION In order to solve the above-mentioned inconvenience, the present invention does not require the operation of adding water and stirring the water, but maintains the water level of the hot water in the bathtub to a predetermined temperature while maintaining the water level. An object of the present invention is to provide a bathtub temperature control device capable of lowering the temperature.

[0004]

According to the present invention, a pump for circulating hot water in a bath tub, a bath heater for heating hot water, and a temperature detecting means for detecting a temperature of hot water in the bath tub are provided to achieve the above object. Hot water temperature setting means for setting hot water temperature, control means for controlling the bath heater according to a hot water temperature adjustment instruction signal from the hot water temperature setting means and a detected temperature signal from the temperature detecting means, A bath tub temperature control device, comprising: an auxiliary heat exchanger installed in a circulation path of hot water between the bath heater and the bath tub; and an air conditioner comprising an outdoor heat exchanger and an indoor heat exchanger.
Heat exchange medium from the outdoor heat exchanger of the unit to the auxiliary heat exchanger
And a heat exchange medium supply means for supplying the heat exchange medium. When the control means receives an instruction signal to lower the temperature of the hot water from the hot water temperature setting means, the pump circulates the hot water in the bathtub and supplies the heat exchange medium. supplying a cold heat exchange medium in the auxiliary heat exchanger by means, characterized in that to perform the cooling of the hot water in the bathtub in response to a detection signal from said temperature detecting means.

According to the present invention, when the control means inputs an instruction signal to lower the hot water temperature from the hot water temperature setting means, the low-temperature heat exchange medium from the heat exchange medium supply means to the auxiliary heat exchanger. Supply is started. At this time, the control means simultaneously operates the pump to circulate the hot water in the bathtub through the auxiliary heat exchanger. Therefore, the hot water in the bathtub is cooled by the low-temperature heat exchange medium in the auxiliary heat exchanger. Therefore, it is possible to lower the hot water temperature without adding water (while keeping the water level in the bathtub constant). Cooling by the auxiliary heat exchanger is performed until the temperature detected by the temperature detector reaches the temperature set by the hot water temperature setting means, so that the temperature of the hot water can be lowered to the set temperature.

[0006]

When the control means inputs a command signal to lower the hot water temperature from the hot water temperature setting means, the outdoor heat exchanger starts a cooling operation, and the low-temperature heat exchange medium is supplied to the auxiliary heat exchanger. Supplied to Therefore, it is not necessary to newly provide a heat exchange medium supply means for the bathtub temperature control device.
Further, the control means increases the hot water temperature from the hot water temperature setting means.
When an instruction signal is input to the bathtub,
With the hot water circulated in the bath, the bath heater
While heating the hot water inside, the heat exchange medium supply means
Supply a high temperature heat exchange medium to the auxiliary heat exchanger.
And features. According to the present invention, the hot water in the bathtub is
Heated by both the bath heater and the auxiliary heat exchanger
So it is possible to raise the temperature of hot water in the bathtub in a short time
it can.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a configuration diagram of the bathtub temperature control device of the present embodiment, and FIG. 2 is a flowchart showing the operation of the bathtub temperature control device.

Referring to FIG. 1, reference numeral 1 denotes a bathtub into which hot water 2 is put. Reference numeral 3 denotes a temperature detecting means provided in a circulation path 8 described later, which detects the temperature of the hot water 2 in the bathtub 1 and outputs a detected temperature signal to the control means 4. 5 is a hot water temperature setting means having a hot water temperature setting switch 6 and a start switch 7;
A temperature adjustment instruction signal is output to the control means 4. Reference numeral 8 denotes a circulation path, in which the hot water 2 is circulated in the circulation path 8 by a pump 9, heated by a main heat exchanger (not shown) heated by a gas burner 11 in a bath heater 10, and an auxiliary heat exchanger 12. Heating and cooling. Reference numeral 13 denotes a cooling / heating unit including an outdoor heat exchanger 14 and an indoor heat exchanger 15, which are connected to the auxiliary heat exchanger 12 and the indoor heat exchanger 15 via the outgoing pipe 16 and the return pipe 17 from the outdoor heat exchanger 14. Supply heat exchange medium. Reference numeral 18 denotes a bath solenoid valve, which opens / closes the going pipe 16 and the returning pipe 17 to the auxiliary heat exchanger 12. Reference numeral 19 denotes an indoor solenoid valve, which opens / closes the access pipe 16 and the return pipe 17 to the indoor heat exchanger 15 and controls the supply of the heat exchange medium to the indoor heat exchanger 15.

The operation of the above bathtub temperature control device will now be described with reference to FIG.
This will be described with reference to the flowchart of FIG. First, the operation of the apparatus when an instruction to lower the hot water temperature is given by the hot water temperature setting switch 6 and the start switch 7 is turned on will be described with reference to the flowchart A of FIG. When the start switch 7 is turned on in STEP1, the cooling operation of the outdoor heat exchanger 14 is started in STEP2. Then, when the bath electromagnetic valve 18 is opened in STEP 3, the supply of the low-temperature (for example, 5 degrees) heat exchange medium to the auxiliary heat exchanger 12 is started. In this state, when the pump 9 is turned on in STEP4, the hot water 2 in the bathtub 1 is turned on.
Is cooled by the heat exchange medium in the auxiliary heat exchanger 12 while circulating in the circulation path 8, so that the temperature of the hot water 2 decreases. When the temperature of the hot water 2 detected by the temperature detector 3 becomes equal to or lower than the temperature set by the hot water temperature setting switch 6 in STEP 5, the cooling operation of the outdoor heat exchanger 14 is stopped in STEP 6, and the bath electromagnetic wave is switched in STEP 7. The valve 18 is closed, the pump 9 is turned off in STEP 8 and the hot water 2 in the bathtub 1 is turned off.
The cooling operation of is ended.

As described above, in the present embodiment, the hot water 2 in the bathtub 1 is cooled to the temperature set by the temperature setting switch 6 without adding water. Hot water 2 in bathtub 1 is pump 9
Forcibly circulates, the user is relieved of the hassle of stirring the hot water 2 which was conventionally required when adding water.

Next, the operation of the apparatus when an instruction to raise the temperature is given by the hot water temperature setting switch 6 and the start switch 7 is turned on will be described with reference to the flowchart B of FIG. When the start switch 7 is turned on in STEP 10, S
The combustion of the burner 11 inside the bath heater 10 is started in the TEP 11, and the main heat exchanger is heated. And STEP
When the pump 9 is turned on at 12, the hot water 2 in the bathtub 1 is heated by the bath heater 10 while circulating in the circulation path 8, so that the temperature of the hot water 2 rises. Subsequently, in STEP 13, the heating operation of the outdoor heat exchanger 14 is started.
When the bath solenoid valve 18 is opened, the auxiliary heat exchanger 12
Supply of high-temperature heat exchange medium to the
The hot water 2 in the inside is heated by the burner 11 in the bath heater 10 through the main heat exchanger, and is also heated in the auxiliary heat exchanger 12 by the heat exchange medium. When the temperature of the hot water 2 detected by the temperature detector 3 becomes equal to or higher than the temperature set by the hot water temperature setting switch 6 in STEP 15, the combustion of the burner 11 of the bath heater 10 is stopped in STEP 16, and the pump is stopped in STEP 17. OFF
Then, in STEP 18, the heating operation of the outdoor heat exchanger 14 is stopped, and in STEP 19, the bath electromagnetic valve 18 is closed to end the heating operation of the hot water 2 in the bathtub 1.

As described above, in this embodiment, the hot water 2 in the bathtub 1 is used.
Is heated at two locations, the bath heater 10 and the auxiliary heat exchanger 12, so that the temperature of the hot water 2 is reduced in a shorter time than when the hot water 2 is heated using only the bath heater 10 as in the related art. Can be raised.

In this embodiment, the supply of the heat exchange medium to the auxiliary heat exchanger 12 is performed by using the outdoor heat exchanger 18 of the air conditioner 13 to reduce the cost of the apparatus and the installation space. However, it is of course possible to adopt a configuration in which a heat exchange medium supply device that supplies the heat exchange medium to the auxiliary heat exchanger 12 is provided exclusively.

Further, in the present embodiment, when the hot water 2 in the bathtub 1 is heated, both the bath heater 10 and the auxiliary heat exchanger 12 heat as described above. The heating may be performed only by the vessel 10.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a bathtub temperature control device of the present invention.

FIG. 2 is a flowchart showing the operation of the bathtub temperature control device of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Bathtub, 2 ... Hot water, 3 ... Temperature detector, 4 ... Control means, 5
... hot water temperature setting means, 6 ... hot water temperature setting switch, 7 ... start switch, 8 ... circulation path, 9 ... pump, 10 ... bath heater,
11 burner, 12 auxiliary heat exchanger, 13 air conditioner, 14 outdoor heat exchanger, 15 indoor heat exchanger, 16
Outgoing pipe, 17 ... return pipe, 18 ... bath solenoid valve, 19 ... indoor solenoid valve

Claims (2)

(57) [Claims] 1. A pump for circulating hot water in a bathtub, a bath heater for heating hot water, temperature detecting means for detecting hot water temperature in the bathtub, hot water setting means for setting hot water temperature, A bathtub temperature control device comprising: a bath temperature control instruction signal from a bath temperature setting unit and a control unit for controlling the bath heater in accordance with a detected temperature signal from the temperature detection unit. An auxiliary heat exchanger installed in the hot water circulation path, and a cooling and heating system comprising an outdoor heat exchanger and an indoor heat exchanger.
Heat exchange from the outdoor heat exchanger of the incubator to the auxiliary heat exchanger
A heat exchange medium supply unit for supplying a medium; and when the control unit receives an instruction signal to lower the hot water temperature from the hot water temperature setting unit, the control unit causes the pump to circulate the hot water in the bathtub and the heat exchange medium. supplying a cold heat exchange medium in the auxiliary heat exchanger by the supply means, bath temperature control means, characterized in that to perform the cooling of the hot water in the bathtub in response to a detection signal from said temperature detecting means . 2. The control means according to claim 1 , wherein said control means sets the hot water from the hot water temperature setting means.
When an instruction signal for increasing the temperature is input, the pump
With the hot water in the bathtub circulated, the bath heater
Heating the hot water in the bathtub and supplying the heat exchange medium
Step to supply hot heat exchange medium to the auxiliary heat exchanger
Bath temperature control apparatus according to claim 1, characterized in that.