JPH02251046A - Controller method for 1-bathtub 2-circuit type hot water supply bath boiler - Google Patents

Abstract

PURPOSE:To stabilize hot water supplying performance by once setting flow rate of hot water in bathtub side boiler to zero for use in sole hot water supply when the hot water is used at the time of sole use of bath heating, and simultaneously using both the hot water supply and the bath heating after the output hot water temperature is stabilized. CONSTITUTION:In case of using hot water supply while a bath heating is solely used, a switching servo valve 23 is completely switched to a second bypass water passage 28 side, and the flow rate QF of a bath side boiler 1b is reduced to zero so that all bath water flows through the passage 28. Then, a capacity controller 14 obtains gas quantity at the time of sole use of hot water supply from the detected values of a water quantity sensor 4 and an input water temperature sensor 5, feeds back the detected value of a hot water supply side boiler output hot water temperature sensor 3, and so controls the opening of a gas proportional valve 12 as to become a set temperature. In this case, the output hot water temperature of the hot water supply side immediately becomes the set temperature to be stabilized. After the controller 14 detects the stabilization of the detected value of the sensor 3, bath hot water is circulated to the boiler 1b, and both the hot water supply and the bath heating are used simultaneously.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for controlling a one-can, two-circuit, supply and leakage bathtub.

(Prior Art) Conventionally, in a one-can two-circuit hot water bath pot, as shown in Japanese Patent Application No. 1983-1.46493, the amount of heat absorbed by the bath water passing through the bath-side can body is There are devices that are equipped with a device that controls the circulating amount of bath water so that the temperature is constant, and a capacity control device that controls the outlet temperature of hot water on the hot water supply side to a predetermined set temperature.

(WM to be solved by the invention) In the above conventional example, when the bath heating is used alone, during the transition period from when the hot water supply starts to be used until the temperature reaches the set temperature and becomes stable, the bath water passing through the bath side can body is I tried to reduce the amount of heat absorbed by the bathtub to the target value.

At this time, the amount of heat absorption required on the hot water supply side is calculated from the incoming water temperature, set temperature, and flow rate, and this is added to the target value of the amount of heat absorption on the bath side to determine the total amount of heat absorption, and the heating capacity corresponding to the total amount of heat absorption is calculated. This was done using a capacity control device. However, when the target value of the amount of heat absorbed on the bath side differs from the actual amount of heat absorbed, the amount of heat absorbed on the hot water supply side also differs from the actual amount of heat absorbed, so the dispatch temperature also differs from the set temperature. In order to eliminate this difference, even if the amount of waste was adjusted by feeding back the outlet temperature, it took a long time to reach the set temperature.

The present invention was developed in the above-mentioned time, and is designed to stabilize the hot water output @ performance during the transition period from when the hot water supply starts to be used until it reaches the set temperature and stabilizes when the bath heating is used alone. The object of the present invention is to provide a method for dividing a can two-circuit hot water bath pot. .

(Means for solving departmental problems) In order to achieve the above object, the present invention provides a control method for a one-can two-circuit hot water bath pot, in which when the hot water is used alone for bath heating, the hot water is circulated. It is characterized in that the flow rate of the bath-side can body is once set to O by a quantity control device, and the bath is used solely for hot water supply, and after the temperature of the hot water supply becomes stable, it is controlled so that the hot water supply and bath heating are simultaneously used.

(Example) A bath extension temperature sensor (26) consisting of a thermistor for detecting temperature is disposed. Reference numeral (23) denotes a water saving valve, which is provided at the branch point of the water channel between the circulation pump (25) and the Hall type water flow sensor (22) and the second bypass water channel (28). (27) is a circulation control circuit that receives signals from the above-mentioned sensors to drive and control loads such as a circulation pump and a storage servo valve (23), and together with the above-mentioned loads constitutes a circulation amount control device. .

In this one-can two-circuit hot water bath pot, when bath heating is used alone, the circulation amount control circuit (27) switches the cut-and-storage servo valve (23) to the bath-side can body (1b) side. The flow rate of the second bypass waterway (28) is set to O, so that the entire amount of bath water flows through the bath side can body (1b). The capacity control circuit (14) controls the constant gas ftTh when the bath is used alone.
The opening degree of the gas proportional valve (12) is controlled so that When hot water is used in a camp that uses bath heating alone as described above, the cut-and-storage servo valve (23) is completely switched to the second bypass water channel (28). A detailed explanation will be given based on the four sides. In the figure (1), the hot water supply side can body (1a) and the bath side can body (1b) have fins (2
). (3) is a hot water supply side can outlet temperature sensor consisting of a thermistor, (4) is a water flow sensor that detects the hot water supply flow rate, (5) is an inlet water temperature sensor consisting of a thermistor, and (6) is a fixed water capana, which is a hot water supply side. Circuit (10
). (7) is a water flow control valve, which is installed in the first bypass waterway (9) and adjusts the hot water mixture ratio so that the concentrated mixture detected by the mixed hot water temperature sensor (8) consisting of a thermistor reaches the set temperature. It is something. (11)
is a gas electromagnetic valve, (12) is a gas proportional valve, (13) is a burner that heats the can body, and (14) is a capacity control that controls the heating amount of the burner in response to signals from each temperature sensor and water amount sensor. It is a circuit and constitutes a capacity control device. (2
0) is a bath circulation circuit, which includes a circulation pump (25) that forcibly circulates bath water, and a bathtub temperature sensor (25) consisting of a thermistor.
4), the ball type water flow sensor (22), the circulating hot water temperature, and the flow mQF of the bath side can body (1b) are throttled to 0 so that the entire amount of bath water flows through the bypass waterway (28). In other words,
Let the amount of heat absorbed by the bath be 0. Next, the capacity control circuit (14)
calculates the gas amount when hot water is used alone from the detected values of the water flow sensor (4) and inlet water temperature sensor (5), and feeds back the detected value of the water supply side can body humidity sensor (3) to set the set temperature. The opening degree of the gas proportional valve (12) is controlled so that In this case, there is no effect of the amount of heat absorbed by the bath, and the hot water outlet temperature on the hot water supply side immediately reaches the set temperature and becomes stable. Capacity control circuit (14
) detects that the detected value of the hot water temperature sensor (3) is stable, circulates the bath water to the bath side can body (Ib), and starts simultaneous use of hot water supply and bath heating.

(Effects of the Invention) As described above, the present invention provides a one-can two-circuit hot water bath pot that controls the circulation amount during the transition period from when the hot water starts to be used until the temperature reaches the set temperature and stabilizes when the bath heating is used alone. The device once reduced the flow rate of the bath-side can body to 0 and controlled it so that it was used solely for hot water supply, and the tap ε hot water discharge performance became stable.

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[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing one embodiment of the present invention. (la) (lb) ・Can body ・Hot water supply side can body ・Bath side can body ·fin ・Capacity control circuit ・Circulation pump ・Circulation amount control circuit

Claims (1)

[Claims] The can body on the hot water supply side and the can body on the bath side share a fin, and there is a circulation pump that forcibly circulates the bath water, a circulation amount control device that controls the amount of bath water passing through the can body on the bath side, and a circulation amount control device that controls the temperature of hot water coming out of the hot water supply side. In a device that is equipped with a hot water outlet temperature sensor that detects the hot water temperature sensor and a capacity control device that controls the capacity of the heating device that heats the can body, when the hot water supply is used when bath heating is used alone,
The one-can two-circuit hot water supply system is characterized in that the flow rate of the bath-side can body is set to 0 by the circulation rate control device, and hot water is used solely for hot water supply, and after the hot water outlet temperature is stabilized, hot water supply and bath heating are simultaneously used. How to control a bathtub.