JPH0336455A - Controller for one-boiler two-circuit type hot-water supply bath boiler - Google Patents

Abstract

PURPOSE:To fully utilize the capability of an apparatus by a method wherein flow rate on the bath boiler side is calculated so that the heat absorption rate on the bath side is kept at a value equal to the maximum heating capacity minus the heat absorption rate on the hot-water supply side, and the combustion is carried out at the specified maximum heating capacity in the simultaneous use for heating hot-water supply and bath. CONSTITUTION:In the case wherein an apparatus is simultaneously used for heating a bath and hot-water supply, a target heat absorption rate on the hot water supply side is calculated. Then, a bath side heat absorption rate arithmetic device 29b calculates a target heat absorption rate on the bath side by subtracting the target heat absorption rate on the hot water supply side from the maximum heating capacity of the apparatus. After that, a bath circulation flow rate arithmetic device 30a calculates a flow rate on the bath boiler side according an experimental formula to attain the target heat absorption rate on the bath side. Then, a bath hot-water supply temperature arithmetic device 31a calculates a hot-water supply temperature according to the target heat absorption rate, the calculated flow rate and output values of a bath temperature sensor. Then, the bath circulation flow rate arithmetic device 30a calculates a flow rate on the bath boiler side, at which the hot-water supply temperature reaches the maximum one, according to an experimental formula. Finally, the valve lift of a gas proportional valve 11 is controlled so as to attain the maximum gas flow rate in simultaneous use for heating hot-water supply and bath, and the combustion starts for the simultaneous use.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a control device for a 162-circuit hot water supply bath pot in which the hot water supply side can body and the bath side can body share fins.

(Conventional technique wI) Conventionally, for a 162-circuit hot water bath pot, as shown in Japanese Patent Application No. 146493/1983, for example,
A capacity control device is installed to control the hot water outlet temperature on the hot water supply side to a predetermined set temperature, and when hot water supply and bath heating are used simultaneously, the bath water is adjusted so that the heat absorption amount of the bath water passing through the bath side can is constant. Some devices are equipped with a device that calculates and controls the amount of circulation.

In this device, when the amount of heat absorbed on the hot water supply side exceeds a predetermined amount during simultaneous use, the bath side gives priority to the heat absorption on the hot water supply side and suppresses the amount of heat absorbed on the bath side to a predetermined maximum amount of heat absorbed.

(&!Problem to be solved by the invention) However, in the above conventional technology, even if the amount of heat absorbed on the hot water supply side is less than a predetermined amount, the amount of heat absorbed on the bath side is not controlled to a predetermined maximum amount or more. It wasn't. Therefore, during simultaneous use, the capacity of the 162-circuit hot water bath pot was not fully utilized, and a portion of the capacity was wasted.

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, it is an object of the present invention to provide a control device that fully utilizes the capabilities of a 162-circuit hot water bath pot during simultaneous use of hot water supply and bath heating.

(Means for Solving the Problems) In order to achieve the above object, a control device for a 162-circuit hot water bath pot of the present invention provides a control device for a hot water supply bath pot in which a hot water supply side can body and a bath side can body share a fin. a quantity regulating device, a fuel regulating device, a hot water supply endothermic amount calculating means for calculating heat absorption 1 on the hot water supply side, and a bath endothermic amount calculating means for calculating the bath side endothermic amount by subtracting the hot water supply side endothermic amount from a predetermined maximum heating amount. , a bath circulation amount calculation means for calculating the bath side can body flow rate to achieve the above bath side heat absorption amount, and a bath circulation amount adjustment device driving means for driving the bath circulation amount adjustment device so as to achieve the above bath circulation amount. In addition, in the case of simultaneous use of hot water supply and bath heating, the structure is provided with a fuel adjustment device driving means for driving the fuel adjustment device so that combustion is performed at a predetermined maximum amount of heating.

(Function) The control device of the present invention calculates the bath side heat absorption amount by subtracting the hot water side heat absorption amount from the maximum heating amount with the above-described configuration, and then uses the bath circulation amount calculation means to calculate the bath mg & heat amount. A bath circulation amount adjustment device that calculates the flow rate of the bath side can body!
The bath circulation amount adjusting device is driven by the driving means so that the above flow rate is achieved, and the capacity of the 162-circuit hot water supply bath pot is fully utilized.

(Example) Fig. 1 is a configuration diagram showing one embodiment of the present invention. It is a can that shares (2).

(3) is a hot water supply side can outlet temperature sensor consisting of a thermistor, (4) is a hot water supply flow rate sensor that detects the hot water supply flow rate, and (5)
(6) is a fixed water governor, which is provided in the hot water supply circuit QQ. (7
) is a water flow control valve, which is installed in the hot water supply bypass waterway (9) and adjusts the hot water mixing ratio so that the mixed hot water temperature detected by the mixed hot water temperature sensor (8) consisting of a thermistor becomes the set temperature. (B) is a gas electromagnetic valve, (B) is a gas proportional valve which is a capacity adjustment device, and 0 is a burner that heats the can body. (7) is the bath circulation circuit, which consists of a circulation pump (goods) that forcibly circulates bath water, a bath temperature sensor (goods) consisting of a thermistor, a ball-type bath water flow sensor @, and a thermistor that detects the circulating hot water temperature. ) is placed on the bath side hot water temperature sensor. (to) is a switching servo valve as a circulation amount adjustment device, and it is installed at the junction of the waterway between the circulation pump (foundation) and the ball-type water flow sensor @ and the bath bypass waterway (to), and is sent out by the circulation pump gυ. This is to adjust the flow rate of bath water that bypasses the bath side can body (xb) and the bath side can body (lb) to the bath side bypass waterway connected to the outlet side. The switching servo valve port is on the bath side can body (1b)
When fully opened to the side, all the bath water sent out by the circulation pump flows into the bath side can body (1b). (A) is a remote control that has a hot water temperature setting device and a bath heating operation switch. ＠ is a control device, which includes a heat absorption amount calculation device, a bath circulation amount control device (to), a bath hot water temperature control device (to), and a switching servo valve drive means (to) as a bath circulation amount adjustment device drive means. ), a gas proportional valve drive means (to) as a fuel adjustment device drive means, and another control device O.

As shown in Fig. 2, the heat absorption amount calculating device (2) calculates the heat absorption amount qO on the hot water supply side from each output value of the incoming water temperature sensor (5), the hot water supply water amount sensor (4), and the hot water temperature setting device of the remote control @. The hot water supply endothermic amount calculating means (29a) calculates the bath side endothermic amount N by subtracting the hot water supply side endothermic amount from the predetermined maximum heating amount To of the appliance.
and bath endothermic amount calculation means (29b) for calculating o.

The bath circulation amount control device (7) includes a bath heat absorption amount calculation means (2
9b) A bath circulation amount calculating means (3oa) for calculating the bath side can body flow rate IPQk to make the bath side heat absorption fiFo calculated in step 9b), and the bath side can body flow rate PQk and the maximum flow *'
Bath circulation amount comparison means (3
The bath hot water temperature control device (b), which is comprised of the above-mentioned bath side can body flow rate FQk, bath side heat absorption amount FO, and output value PTO of the bath water temperature sensor, calculates the bath side hot water temperature T. It consists of a temperature calculation means (31a) and a bath hot water temperature comparison means (311) for comparing the bath side hot water temperature T and the maximum hot water temperature TMAX.

The switching servo valve drive means (to) is connected to the bath circulation amount comparison means (3).
01)) and the bath hot water temperature comparison means (31b
) Based on the comparison result, the switching servo valve is driven to flow the bath side can body flow rate FQk at which the calculated value of the hot water outlet temperature is less than or equal to the maximum hot water outlet temperature TMAX when the maximum flow rate PQ kMAX is below. The valve driving means receives a usage mode signal from another control device (b) and drives the gas proportional valve αD so that the required gas amount for that usage mode is achieved.

Next, the operation of the above configuration will be explained. Figure 3 shows an outline of the sequence up to the start of combustion for simultaneous use of hot water supply and bath heating. Other control devices (2) in the control device (to) include hot water supply water amount sensor (4) to bath water amount sensor @,
Or, depending on the signal from the remote control @ that has the bath heating operation switch, it is determined whether the mode of use is for hot water supply and bath heating alone, or for both at the same time (S
2). If used alone, move to another sequence. In the case of simultaneous use, the hot water supply side target heat absorption calculation means (29&) first calculates the output value QQ of the hot water supply water amount sensor (4) and the output value of the inlet water temperature sensor (5) (IT (II and remote controller). Calculate the target heat absorption 1tQo on the hot water supply side from the set temperature QTS of the hot water supply using the following formula (S3) o QO-QQX(QTS-
QTC) o Next, the bath side endothermic amount calculating means (29b) subtracts the target endothermic amount QO on the hot water supply side from the maximum heating amount To of this appliance and calculates the bath side target endothermic amount PO using the following formula (84 ). FO-To-QOo After that, the bath circulation amount calculating means (30a) calculates the bath side can body flow rate IFqkO to make the bath side the target heat absorption amount FO from the empirical formula (S5). After that, the bath water temperature calculation means (31a)
is calculated based on the target heat absorption amount yO, the calculated flow rate PQkO, and the bathtub temperature (S6). TB-'10/1QkO+IFT
(1!0 After that, the bath hot water temperature comparison means (31b) compares the hot water tap temperature TB and the maximum hot water tap temperature T MAY (S 7 ) If O(1) T B>TMAX +7), the bath circulation amount is calculated. The means (30a) calculates the bath side can body flow rate PQD at which the hot water outlet temperature reaches the maximum hot water outlet temperature T MAX from an empirical formula (S8). Next, the bath circulation amount comparison means (3
1b) is the bath side can body flow rate IFQD and the maximum flow rate IFQ
A comparison with k MAX is performed (S9). IFqD)F
In the case of QkMAX (F), the switching servo valve driving means (
2) Drives the switching servo valve □□□ so that the bath side can body flow rate is Fqk-O (S10), and IFQD≦FQkM
In the case of AX, the switching servo valve (to) is driven (all) so that the bath side can body flow rate becomes PQk-FQD. (
1) If TB≦TMAX, use the bath circulation amount comparison means (3
0b) is the calculation flow JIFqko and the maximum flow rate IF Q kM
A comparison with AX is made (81B). FQkokoFq
In the case of kMAX, the switching servo valve driving means (2) controls the bath side can body flow rate'? Drive the switching servo valve @ so that Q'kt - PQkc (S13), and F Q k c
＞? In the case of Q, kMAI, the bath outlet hot water temperature calculation means (31&) converts the bath side can body flow rate FQk into the maximum flow rate I.
Calculate the hot water outlet temperature T(l) from the experimental formula when PQkMAX is set (814).Then, the bath hot water temperature comparison means (3xb) calculates the hot water outlet temperature TO and the maximum hot water outlet temperature TMAI.
(SIJ.TO) In the case of TMAX, the switching servo valve driving means (2) controls the bath side can body flow rate Fq.
Drive the switching servo valve (to) so that k-o (8
16) In the case of TOATMAX, the bath side can body flow rate P
Q k-7Q Switching servo valve @
is driven (S17). After that, the gas proportional valve driving means (to) receives a signal for simultaneous use from another control device (incorporated), and opens the gas proportional valve (b) to reach the maximum gas amount for simultaneous use of hot water supply and bath heating. Adjust the degree (S1
8), simultaneous use combustion begins (819).

(Effects of the Invention) As is clear from the embodiments, the present invention provides a 162-circuit hot water bath pot with a bath circulation amount adjusting device, a hot water supply heat absorption amount calculation means for calculating the heat absorption amount on the hot water supply side, and a predetermined Bath endothermic i calculation means for calculating the amount of heat absorption on the bath side by subtracting the amount of heat absorption on the hot water supply side from the maximum heating amount; bath circulation amount calculation means for calculating the flow rate of the bath side can body to obtain the amount of heat absorption on the bath side;
A bath circulation amount adjusting device driving means is provided to drive the bath circulation amount adjusting device so as to achieve the bath circulation amount as described above, and for simultaneous use of hot water supply and bath heating, Since a fuel adjustment device driving means for driving the fuel adjustment device is provided, the capacity of the 162-circuit hot water bath pot can be fully utilized.

[Brief explanation of drawings]

#! Figure 1 is a configuration diagram of a 162-time hot water supply bath pot according to the present invention, Figure 2 is a block diagram clearly showing the configuration of the present invention, and Figure 3 is a block diagram showing the configuration of the present invention.
The figure is a 70-chart of one embodiment of the present invention. (1) Can body (1a) Hot water supply side can body (1b) Bath side can body (2) Fin aη Fuel adjustment device (2) Bath circulation Amount adjustment device (29a)...Hot water supply heat absorption amount calculation means (2cab)...Bath heat absorption amount calculation means (30a)...
・Bath circulation amount calculation means (2)...Bath circulation amount adjustment device driving means ■...Fuel adjustment device driving means

Claims (1)

[Claims] In the case where the hot water supply side can body and the bath boiler side can body share a fin, there is a bath circulation amount adjustment device, a fuel adjustment device, a hot water supply heat absorption amount calculation means for calculating the heat absorption amount on the hot water supply side, and a predetermined maximum heating bath-side heat absorption calculation means for calculating the bath-side heat absorption amount by subtracting the hot water supply-side heat absorption amount from the water supply side heat absorption amount; bath circulation amount calculation means for calculating the bath-side can body flow rate to obtain the bath-side heat absorption amount; and the bath circulation amount. In addition to providing a bath circulation amount adjusting device driving means for driving the bath circulation amount adjusting device so that
Control of a one-can two-circuit hot water bath boiler, characterized in that a fuel regulating device driving means is provided for driving the fuel regulating device so that the fuel is combusted at a predetermined maximum heating amount when hot water supply and bath heating are used simultaneously. Device.