JPS6222378B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to pump control for forced circulation bathtubs, and aims to improve comfort and energy saving.

Conventional forced circulation bathtubs were only controlled when the water temperature was turned on, and once the temperature reached the appropriate temperature, the water in the bathtub was not circulated during bathing. Even if the pump was operated during fire extinguishing, the flow rate remained constant. However, the human body gets used to such constant stimulation (temperature), so even if the bath is comfortable for a short time after the bath starts, the bath quickly loses its freshness and becomes uncomfortable due to getting used to it.
As a result, they got used to the warmth and raised the water temperature more than necessary, wasting heat.

The present invention solves the above-mentioned conventional drawbacks by controlling the power spectrum of the rotational speed of the pump during bathing so as to attenuate the frequency of fluctuations in the rotational speed. An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In FIG. 1, reference numeral 1 designates a bath unit main body having a built-in heat exchanger, 2 pumps, and 3 burners 4, and 5 designates a bathtub. The heat exchanger 2 and the bathtub 5 are communicated with each other through a connecting pipe A6 and a connecting pipe B7, and a hole communicating with the inner wall of the bathtub 6 is composed of a suction port 8 and a discharge port 9. Connection pipe A6
is provided with a circulation pump 3 that sends hot water in the bathtub 5 to the heat exchanger 2. 10 is a pump 2 control circuit;
11 is a 1/frequency (hereinafter referred to as 1/) signal generator, and 12 is a human body taking a bath.

In the above configuration, when the pump 3 starts operating, the signal generator 11 is activated by the pump control circuit 10.
The power spectrum of the pump rotational speed becomes a 1/1 distribution as shown in FIG.

It is known that fluctuations with a power spectrum of 1/ are closely related to human senses, and fluctuations in brain waves and heartbeat cycles have a power spectrum of 1/. In addition, the acoustic power of pleasant music and the power spectrum of frequency fluctuations are also 1/
is proportional to. Based on this knowledge, there are also examples in which effects have been obtained by varying the strength and interval of the current applied when relieving pain such as neuralgia with a 1/power spectrum. In other words, it is said that fluctuations having a power spectrum of 1/1 do not cause the human body to become accustomed to the stimulus, maintain freshness, and match the rhythm of the senses.

Therefore, the power spectrum of the pump rotation speed is controlled to 1/1. In other words, the power spectrum of the jet jet ejected from the discharge port 9 and hitting the human body is 1/
By doing so, there is no need to get used to the temperature during bathing, the bath always stays fresh, and it adapts to the rhythm of fluctuations that the human body feels comfortable with, making it possible to obtain a very comfortable bathing condition. and,
Because you get used to the temperature, you won't consume more heat than necessary by raising the water temperature too much.

As is clear from the above description, the bath unit of the present invention varies the number of revolutions of the pump during bathing, and the jet stream hitting the human body varies, so comfort is sustained and energy saving is improved.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the bath unit of the present invention, and FIG. 2 is a diagram showing the relationship between the power spectrum of the rotation speed and frequency of the same pump. 1...Bath unit main body, 2...Heat exchanger, 3
... pump, 4 ... burner, 10 ... pump control circuit, 11 ... 1/signal generator.

Claims (1)

[Claims] 1. Control that configures a forced circulation bathtub with a built-in heat exchanger, pump, burner, etc., fluctuates the rotation speed of the pump during bathing, and controls the power spectrum of this rotation speed so that it is inversely proportional to the period of fluctuation. Bath unit with equipment.