JPH0611182A - Controller for bath boiler equipped with hot-water supplier - Google Patents

Abstract

PURPOSE:To permit the improvement of handling convenience by a method wherein a sequence, in which combustion is effected independently for the demand of hot-water supplying and the demand of additional heating respectively, is permitted to be switched into another sequence, in which combustion for either one of the hot-water supplying or the additional heating is effected. CONSTITUTION:When both of demanding signals K1, O1 outputted from a hot-water supplying demanding means 14 and an additional heating demanding means 12 are selected by the command of a switching means 23, a sequence is switched into a sequence, in which combustion is effected independently for the hot-water supplying demand and the additional heating demand respectively, while the sequence is switched into another sequence, in which combustion for either one of the hot-water supplying demand or the additional heating demand is effected, when demanding signals K2, O2 outputted from a demand control means 21 are selected by the command of the switching means 23. According to this method, a large-scale bath boiler equipped with hot-water supplying is permitted to be used in a house, provided with a fine gas pipeline to suppress the demand of gas upon the peak of demand, while the device of the same kind can be used without spoiling the handling convenience even when the device is installed in a house, in which sufficient supply of gas can be expected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a controller for a bath kettle with hot water supply.

[0002]

2. Description of the Related Art In conventional condominiums such as condominiums and apartments, the diameter of the gas pipe is set assuming a bath kettle with a hot water supply of about No. 8. On the other hand, the amount of hot water used has been increasing in recent years in general households. For example, the bath kettle with hot water supply No. 8 is lacking in capacity and is required to have an increased hot water supply capacity.
Large bath kettles such as No. 6 are commercially available. Furthermore, the bath kettles with hot water that are currently on the market can be used for both hot water and baths at the same time, improving usability.

[0003]

However, there is a problem in that the amount of gas supply becomes insufficient when the large-scale bath kettle with hot water supply that is currently on the market is attached to an old apartment house for use. For example, when a large number of households in an apartment house use hot water and a bath at the same time at the same time, the supply of gas will be insufficient due to the narrow piping, and the amount of gas per unit will be less than the required amount. However, even if the amount of gas decreases, the amount of air is as required, so that the hot water supply burner and the additional heating burner are dangerous because the flame causes a lift phenomenon, which eventually extinguishes the fire and releases raw gas. INDUSTRIAL APPLICABILITY The present invention suppresses the demand for gas during peak hours by not using the hot water and the bath at the same time, and enables the use of a large hot water bath even in an old apartment house with a thin gas pipe. In addition, even if the same model is installed in a house where a sufficient gas supply can be expected, a control device for a bathtub with hot water supply is provided that can be used without impairing usability.

[0004]

According to the present invention, a main gas pipe at a gas inlet is branched to connect a hot water supply burner and a reburning burner to each other, and an electromagnetic valve for controlling the opening and closing of gas is provided in the middle of the branched mutual pipes. A control device for controlling combustion of hot water supply and additional heating of a bath kettle with a hot water supply provided with a valve and having a hot water supply circuit having a water flow sensor or a water flow switch and a heat exchanger for hot water supply pipe-connected between the water supply port and the hot water outlet In regard to the above, the present invention relates to a controller for a bathtub with hot water supply capable of switching between a sequence in which a hot water supply request and an additional heating request are independently burned and a sequence in which either hot water supply or additional heating is burned.

The structure of the present invention will be described with reference to FIGS. 1 and 2 corresponding to the embodiment. In the device of the present invention, the main gas pipe at the gas inlet is branched to form the hot water supply burner 3 and the additional heating burner 4.
A hot water supply solenoid valve 7 and a reheating solenoid valve 8 for controlling the opening and closing of gas are provided in the middle of the branched mutual pipes, respectively, and the ignition plugs 5 are arranged in the hot water supply burner 3 and the reheating burner 4, respectively. , The plug 5 is connected to the ignition device 6, and the water flow sensor 9 and the hot water heat exchanger 1 are provided between the water supply port and the hot water outlet.
A hot-water supply bath with a hot-water supply circuit connected to a hot water supply circuit and a heat exchanger 2 for additional heating that is connected to a bathtub by a hot water supply switch 2
It is controlled by the operating device 11 and the control device 27 which are provided with 0 and the additional heating switch 19. The control device 27
Hot water supply requesting means 14 that creates a hot water supply request signal (K1) from the signal from the hot water supply switch 20 and the signal from the water flow sensor 9, and an additional heating request signal (O from the signal from the additional heating switch 19).
1) The additional heating request means 12, the additional heating sequence means 13 that controls the combustion sequence of the additional heating, the hot water supply sequence means 15 that controls the combustion sequence of the hot water supply, and the hot water supply by the signals of both the additional heating and hot water supply sequence means. The electromagnetic valve 7, the additional heating solenoid valve 8 and the ignition device 6 are respectively driven by hot water supply electromagnetic valve driving means 17, additional heating electromagnetic valve driving means 16 and ignition device driving means 18. The above is the same as the configuration of the conventional controller for the bathtub with hot water supply.

In the present invention, in order to achieve the above-mentioned object, the request management means 21 and the hot water supply requesting means 1 for activating either the hot water supply request signal (K1) or the additional heating request signal (O1).
4 and the request signal (K1, O
1) and the request signal (K
The selection means 22 for selecting (2, O2) and the switching means 23 for instructing the selection means 22 of a selection signal are used.
In response to an instruction from the switching means 23, the selecting means 22 causes both requesting means (1
When the request signal (K1, O1) output by the control unit 4 or 12) is selected, the control device 27 performs a sequence for independently burning the hot water supply request and the additional heating request,
When the request signal (K2, O2) output by the request management means 21 is selected, the technical means is taken to be the control device 27 that performs the sequence of burning either hot water supply or additional heating.

Next, the sequence described in claim 2 and claim 3 is performed among the request management means 21, that is, the means for validating either the hot water supply request signal (K1) or the additional heating request signal (O1). The means will be described with reference to FIGS. 3 and 4. FIGS. 3 and 4 are state transition diagrams, which are diagrams showing input / output relationships. Circles represent states, arrows represent transition destinations, logical expressions indicated by arrows represent transition conditions (inputs), and states in the attached table The corresponding output is shown. The request management means 21 of claim 2 has the input / output relationship shown in FIG. Hot water supply request signal (K1) = 1
, Transition from all states to the hot water supply state and the hot water supply request signal (K
2) = 1 is output, and the transition to the additional heating state is limited only when the additional heating request signal (O1) = 1 and the hot water supply request signal (K1) = 0 in the standby state and the hot water supply state. That is, priority is given to hot water supply. The request management means 21 of claim 3 has the input / output relationship shown in FIG. Each request signal (K
1, O1), but in the hot water supply and additional heating states, even if the other request signal is "1", it does not change to the other unless its own request signal is "0". That is, prior use is prioritized.

[0008]

[Function] When a sequence is set in which the hot water supply request and the additional heating request are made to burn independently of each other, it is possible to use additional heating and hot water at the same time. And it becomes impossible to use hot water at the same time. That is, the switching means 23 can switch between simultaneous use and prohibition of additional heating and hot water supply.

[0009]

EXAMPLE In the above, the one-chip microcomputer 24 was used as the additional heating requesting means 12, the request managing means 21, the hot water supply requesting means 14, the selecting means 22, the additional heating sequence means 13 and the hot water supply sequence means 15.
Further, as the switching means 23, the switch 25 shown in FIG.
6, a selection signal is stored in advance in a memory IC 26 such as a ROM or a RAM connected to the one-chip microcomputer 24, and the one-chip microcomputer 24 stores the selection signal in advance. It is also possible to use the means for reading out and inputting to the selection means 22 and switching by replacing the memory IC 26.

[0010]

As described above, according to the present invention, since it is a control device for a bath kettle with hot water supply, it is possible to easily switch between a sequence in which additional heating and hot water can be used simultaneously and a sequence in which it is prohibited.
It can be installed in both houses by switching to a sequence that prohibits simultaneous use in the case of a house that can supply a small amount of gas and a sequence that allows simultaneous use in the case of a house that has a large amount of gas. For example, when a bath kettle with hot water supply capacity of No. 16 and reheating capacity of No. 5 is installed in a house that can supply only gas no. When it was used at the same time, it was dangerous because the gas amount became insufficient when the maximum was No. 21, but since the model of the present invention can prohibit the simultaneous use of reheating and hot water supply, it is at most No. 16 and can be used safely. . Further, in the case where the gas supply corresponding to No. 21 gas is installed, it can be switched to the additional heating and hot water supply at the same time and can be used without impairing the usability.

[Brief description of drawings]

FIG. 1 is a block diagram of a controller for a bath with hot water according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a bath kettle with hot water supply according to an embodiment of the present invention.

FIG. 3 is a state transition diagram of the control device for the bathtub with hot water supply according to the embodiment of the present invention.

FIG. 4 is a state transition diagram of a controller for a bath with hot water supply according to another embodiment of the present invention.

FIG. 5 is a block diagram showing a switching means in the control device for the bath with hot water according to the embodiment of the present invention.

FIG. 6 is a block diagram showing switching means in a controller for a bath with hot water according to another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Heat exchanger for hot water supply, 2 ... Heat exchanger for additional heating, 3 ... Burner for hot water supply, 4 ... Burner for additional heating, 5 ... Spark plug, 6 ... Ignition device, 7 ... Solenoid valve for hot water supply, 8 ... Additional heating Solenoid valve, 9 ... Water flow sensor, 10 ... Control device, 11 ... Operating device, 12 ... Additional heating request means, 13 ... Additional heating sequence means, 14 ... Hot water supply requesting means, 15 ... Hot water supply sequence means, 16 ... Additional heating solenoid valve Driving means, 17 ... Hot water supply solenoid valve driving means, 18 ... Ignition device driving means, 19 ... Additional heating switch, 20 ... Additional heating switch, 2
1 ... Request management means, 22 ... Selection means, 23 ... Switching means,
24 ... One-chip microcomputer, 25 ... Switch, 26 ... Memory IC

Claims (4)

[Claims] 1. A main gas pipe at a gas inlet is branched to connect a hot water supply burner and an additional heating burner to each other, and an electromagnetic valve for controlling opening and closing of the gas is provided in the middle of the branched mutual pipes, and a water supply port is provided. A hot water supply request and a reheating request in a control device for controlling the hot water supply and the combustion of the additional heating in a bath kettle with a hot water supply having a hot water supply circuit in which a water flow sensor or a water flow switch and a hot water supply heat exchanger are connected to the hot water outlet In contrast to this, a control device for a bath kettle with hot water supply that can switch between a sequence in which combustion is performed independently and a sequence in which either hot water supply or additional heating is performed. 2. A sequence for burning either hot water supply or additional heating in response to the hot water supply request and the additional heating request is hot water supply priority, and when additional hot water is requested during the additional heating combustion or at the same time as the additional heating request, additional heating is requested. 2. The control device for a bath kettle with hot water supply according to claim 1, wherein the sequence is such that the hot water supply is burned when the hot water supply is stopped and the additional heating is not burned even if the additional heating is requested during the hot water supply burning. 3. A sequence for burning either hot water supply or additional heating in response to a hot water supply request and an additional heating request, the additional heating does not burn even when the additional heating is requested during the hot water heating combustion, and the additional heating does not occur during the additional heating heating. The control device for a bathtub with hot water supply according to claim 1, wherein the hot water supply is a sequence that does not burn even when hot water supply is requested. 4. A bath kettle with hot water supply controlled by the control device according to claim 1, 2, or 3.