JPH03247951A - Control device for one-drum two-circuit type hot water, supplying bath boiler - Google Patents

Abstract

PURPOSE:To prevent worsening of hot water feed characteristics of feed hot water by a method wherein during transfer from a hot water feed alone use to a simultaneous use of a hot water feed with a bath and during transfer from the simultaneous used to the hot water feed alone use, a capacity regulating device and a bath circulation amount regulating device are driven based on a target endotherm for a given time to control a circulation amount of hot water fed to a drum body on the bath side. CONSTITUTION:A capacity control device 31 computes a target heat absorption quantity QG on the feed hot water side from output values QQ and QTC from a feed hot water amount sensor 4 and an inflow water temperature sensor 5 and an output value from the feed hot water temperature setter of a remote controller 27 during a given time (t) in which a bath circulation amount regulating device 23 is opened fully to the bypass water passage 25 side on the bath side by a bath circulation amount control means 29. The capacity control device computes a whole target heat absorption quantity ZG at a simultaneous use by adding a bath target heat absorption quantity FG to the target quantity QG, and controls the opening of a capacity regulating device 12 for a given time T1 based on the whole target quantity ZG after the lapse of the given time (t). When a signal for the stop of heating of a bath is inputted by the bath switch of the remote controller 27 and a bath burner is brought into a hot water feed alone use state, the opening of a proportional valve 12 responding to the quantity ZG is controlled during a given time T2 in which the opening attains a value responding to the target quantity QG on the feed hot water side.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a IIIal device for a one-can two-circuit hot water bath pot.

(Prior Art) Conventionally, in a one-can two-circuit hot water bath pot, for example, as shown in Japanese Patent Publication No. 146493/1983,
A device is provided to control the circulation of bath water so that the amount of heat absorbed by the bath water passing through the bath side can is constant, and a capacity control device is provided to control the outlet temperature of hot water on the hot water supply side to a predetermined set temperature. There is something.

(Problems to be Solved by the Invention) In the above-mentioned conventional technology, since the capacity control device corrects the hot water temperature on the hot water supply side by feedback control of the gas amount, when bath heating is started while hot water supply is being used, When water flows into the bath can body, the temperature at the outlet 11I on the hot water supply side drops once and then returns to the set temperature.Also, when bath heating is stopped after this, the temperature at the outlet 11I on the hot water supply side rises once and then returns to the set temperature. This resulted in deterioration in the hot water supply characteristics of the hot water supply, such as the temperature returning to normal.

The present invention is intended to solve the above-mentioned drawbacks of the prior art, and is aimed at solving the above-mentioned drawbacks of the prior art when bath heating is started while hot water supply is in use;
The purpose is to prevent the hot water supply characteristics from deteriorating when bath heating is stopped during simultaneous use.

(Means for Solving the Problems) In order to achieve the above object, the present invention shares fins between the hot water supply side can body and the bath side can body, and adjusts the circulation amount of bath water to the bath side can body. In a bath circuit equipped with a bath circulation amount adjustment device and a capacity adjustment device for adjusting the heat absorption amount of both can bodies, when changing from single use of hot water supply to simultaneous use, and from simultaneous use to single use of hot water supply. sometimes, a capability tsm means for calculating a target endothermic amount and driving the one capacity adjustment device for a predetermined time based on the target endothermic amount;
At the same time, the bath circulation amount control means is provided for driving the bath circulation 9 regulating device for the predetermined period of time to control the amount of bath water circulating to the bath side can body.

(Function) With the above configuration, the present invention can switch from single use of hot water to JVI
f1! When changing to the bath water supply, and when moving from simultaneous use to hot water supply use, the target heat absorption amount is calculated in advance, and the heat absorption amount and the circulation amount of bath water to the bath side can are simultaneously controlled over a predetermined period of time. Prevents deterioration of hot water supply characteristics.

(Example〕 FIG. 1 is a block diagram showing an embodiment of the present invention.

In FIG. 1, (1) is a can body in which a hot water supply side can body (1a) and a bath side can body (1b) share a fin (2).

(3) is a hot water supply side canister 1JA temperature sensor consisting of a thermistor, (4) is a hot water main hall sensor that detects the hot water flow rate, (
5) is an inlet water temperature sensor consisting of a thermistor, and (6) is a fixed water governor, which is installed in hot water supply circuit II (1 (1)).

(7) is the water t5i11 control valve, and the hot water supply bypass waterway (9)
A mixed hot water temperature sensor consisting of a thermistor (
The hot water mixing ratio is adjusted so that the mixed hot water temperature detected in step 8) reaches the set temperature.

(11) is a gas electromagnetic valve, (12) is a gas proportional valve which is a capacity adjustment device, and (13) is a burner that heats the can body.

(20) is a bath circulation circuit, which includes a circulation pump (21) that forcibly circulates bath water, a bath water temperature sensor (24) consisting of a thermistor, a pole-type bath water amount sensor (22), and detects the circulating hot water temperature. A bath-side hot water temperature sensor (26) consisting of a thermistor is arranged. (23) is a switching servo valve as a bath circulation amount adjustment device, and the circulation pump (21)
) and the ball-type water leaf sensor (22), and the bath bypass waterway (25).
21) to adjust the flow rate of the bath water sent out by the bath side can body (1b) and the bath side can body (1b) to the bath side bypass water 'a (25) connected to the outlet side. It is. When the switching servo valve (23) is fully opened to the bath side can body (1b), all the bath water sent out by the circulation pump (21) flows to the bath side can body (1b). (27
) is a remote control with hot water supply i@temperature setting device and bath heating operation switch. (28) is a control device, which includes a bath circulation ta control means 29), a bath target circulation amount calculation stage (30), a capacity '#A@ device (31), and other control bags W (32). > It is composed of.

As shown in FIG. 2, the bath circulation amount control means (29) controls the bath circulation amount adjustment device f! for a predetermined period of time when the bath switch of the remote control (27) is pressed during hot water supply. (23) is fully opened to the bath side bypass waterway (25) side, the flow rate to the bath side can body (lb) is set to O, and after the specified time has passed, the bath side can body (1b) is completely opened. The bath circulation amount adjustment bag M (23) is applied for a predetermined time Tl so that the flow rate of hot water (bath side can body flow rate) becomes the target circulation amount FQ calculated by the bath target circulation amount calculation means (30) described later. When the bath switch on the remote control (27) sends a signal to stop heating the bath and uses only hot water supply, the bath side can body (
Bath circulation is a device so that the flow t of bath water to lb) is 0! (23) is driven for a predetermined time T2.

The bath circulation tfii calculation means (30) calculates the bath circulation 9 degrees by the bath circulation tagl-f stage (29)! !
(23) is fully opened to the bath side bypass waterway (25) side during a predetermined time t, the hot water supply side can body hot water temperature sensor (3),
Each output value QTH, QQ, QTC,
The bath target circulation amount FQ1 is calculated from the FTC and a predetermined bath target heat absorption amount FC using an empirical formula.

The capacity control device W (31) includes the bath circulation amount control means (
During the predetermined time t during which the bath circulation amount adjustment device M (23) is fully opened to the bath side bypass water i1 (25) side by , calculate the target suction P+amount QG on the hot water supply side from QTC and the output value of the hot water temperature setting device of the remote control (27),
The above-mentioned predetermined bath target heat absorption amount FC is added to this target heat absorption amount QG.
are added to calculate the overall target heat absorption amount ZG for simultaneous use, and after a predetermined time has elapsed, the calculated overall target heat absorption amount Z
The opening degree of the capacity adjustment device (12) is controlled over a predetermined time T1 based on Ability to correspond to heat amount ZG 11
The opening degree of the M device (proportional valve) (12) is controlled over a predetermined time period T2 until the opening degree corresponds to the target heat absorption amount QG on the hot water supply side.

Next, the operation of the above configuration will be explained. FIG. 3 shows an outline of the sequence from when bath heating is started to when hot water supply is being used alone, and then stopped and hot water supply is being used alone again.

While the hot water supply is being used alone, the other control device (32) determines whether the bath switch on the remote control (27) has been pressed (Sl). When the bath switch is pressed, at the same time as the circulation pump (21) is activated, the bath circulation amount control means (29) connects the bath circulation amount control means (23) and the bath side bypass waterway (2).
5) side for a predetermined time t, and open the bath side can body (1b
) is assumed to be O (S2). Therefore, there is no effect on the hot water supply characteristics.

Next, during the predetermined time t, the bath target circulation amount calculation means (
30) calculates the bath target circulation amount FQg (S3), and the capacity control device W (31) calculates the water supply side heat absorption rate QG and adds it to the predetermined bath target heat absorption amount FG to determine the overall target. The amount of heat absorbed ZG is determined (S4).

Next, after the above-mentioned predetermined time has elapsed, as shown in the fourth review, the bath circulation amount control means (29) controls the bath circulation amount over a predetermined time T+ so that the bath-side can body flow rate becomes the bath target circulation amount FQK. Gradually drive the armrest W (23) (S5)
. At the same time, the capacity control device (30) operates the proportional valve (!2) for a predetermined time TI based on the overall target heat absorption IZG.
to gradually control the combustion capacity (S
6).

Therefore, after the bath switch is pressed, the bath side can body (1b
), the overall target heat absorption amount ZG required for simultaneous use is calculated in advance, and the combustion capacity is controlled at the same time as bath water is poured into the bath side can body (lb), so the hot water output is controlled. A drop in temperature is prevented. Furthermore, when flowing bath water into the bath side can body (lb) and when increasing the firing capacity, the switching servo valve (23) and proportional valve (12) are gradually controlled over a predetermined time period T+. Therefore, the drop in the hot water temperature is further prevented than if the answer were to suddenly change.

Next, when the bath switch is pressed during the simultaneous use as described above and a signal to stop heating the bath is input to other control devices (S7), the circulation amount control means (29) operates for a predetermined period of time T2. Then, the bath circulation flow rate regulator ff (23) is driven, and the flow rate of bath water to the bath side can body (1b) is gradually reduced to 0 (S8). At the same time, the capacity control device t (31) also controls the capacity adjustment device W (12) over a predetermined period of time Tλ to calculate the target heat absorption t on the hot water supply side from the overall target heat absorption amount ZG.
Gradually reduce the furnace firing capacity to QG (S9), and return to using only hot water supply (SIO).

Therefore, when moving from simultaneous use to single hot water supply use, by reducing the flow rate of bath water to the bath side can body (lb) and at the same time lowering the combustion capacity, the hot water output temperature of the conventional hot water supply can be increased. can be prevented.

(Effects of the Invention) As is clear from the embodiments described above, in the control device for the one-can two-circuit hot water bath pot of the present invention, the hot water supply side can body and the bath side can body share a fin, and the bath side can body In addition to installing a bath circulation amount adjusting device in the bath circuit to adjust the amount of bath water circulated to the bathtub, the bath circuit is also equipped with an IJ1 section device that adjusts the absorption amount of both can bodies. When moving from use to simultaneous use,
And when moving from full-time use to hot water supply sole use, calculate the target heat absorption 9 and adjust the above capacity based on this target heat absorption amount! A capacity control means for driving the bath for a predetermined period of time, and a bath circulation amount control means for simultaneously driving a bath circulation amount adjusting device for the predetermined period of time to control the amount of bath water circulating to the bath side can body. Because of this configuration, the hot water output characteristics of the hot water supply do not deteriorate when bath heating is started while hot water is being used or when bath heating is stopped during simultaneous use.

[Brief explanation of drawings]

1 to 3 show an embodiment of the present invention,
Figure 1 is a block diagram of a 1-can, 2-circuit hot water bath boiler, the 2nd diagram is a block diagram of the control device, the 3rd diagram is a flowchart of the control sequence, and the 4th diagram shows changes in the flow rate of the can body on the bath side and the amount of heat absorbed. This is a graph showing. (Ia)...Feed 1 & side can body (]b)...Bath side can body (2)...Fin (10)...Hot water supply circuit (12)...Gas proportional valve (capacity adjustment device )(20)・
... Bath circuit (23) -- Switching servo valve (bath circulation amount adjustment device W) (29) -- One bath circulation 1tv4ai means (31>
−・−JT=force Mm equipment w

Claims (1)

[Claims] The hot water supply side can body and the bath side can body share a fin, and the bath circuit is provided with a bath circulation amount adjusting device that adjusts the circulation amount of bath water to the bath side can body, and the amount of heat absorbed by both can bodies is adjusted. In a device equipped with a capacity adjustment device, when moving from single use of hot water supply to simultaneous use, and when moving from simultaneous use to single use of hot water supply, the target heat absorption amount is calculated in advance and the above capacity is adjusted based on this target heat absorption amount. A capacity control means for driving the adjustment device for a predetermined time period, and a bath circulation amount control means for simultaneously driving the bath circulation amount adjustment device for the predetermined time period to control the amount of bath water circulated to the bath-side can body. This is a control device for a one-can two-circuit hot water bath boiler, which is characterized by the following.