JPH023106B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a combustion control device for water heating equipment, which is equipped with a means for controlling outlet temperature of hot water based on set temperature information from a remote controller on the main body of the water heating equipment. .

[Conventional technology]

For example, as shown in FIG. 5, in the above-mentioned combustion control device for water heating equipment, operations such as starting and stopping the water heating equipment and setting the hot water temperature are performed using a remote controller B.
The burner controller 2 automatically adjusts the combustion of the burner 1 on the side of the hot water supply equipment A side, that is, the supply of combustion gas to the burner, based on the setting information on the side, and the hot water temperature T from the hot water tap 3 changes depending on the change in the amount of hot water coming out. Control means or the like is employed to maintain the set temperature T ₀ regardless of the temperature. The amount of combustion gas supplied to the burner 1 by the burner controller 2 is adjusted by using, for example, an electromagnetic proportional valve whose opening degree changes proportionally to changes in the drive current in the gas supply path to the burner 1. A combustion gas supply amount adjusting means 4 is provided, and a temperature detecting means Th such as a thermistor is provided in the tapping flow path, so that the temperature T detected by the temperature detecting means Th is maintained at the set temperature _T0 . A means for proportionally controlling the operation of the gas supply amount adjusting means 4 is employed. still,
In the figure, 5 is a gas solenoid valve that opens and closes the gas supply path;
6 is a water governor, 7 is a hot water tap 3 that is opened, and when supply water flows through the heat exchanger 8, it turns on and issues a signal for starting the burner controller 2 to start supplying combustion gas to the burner 1. Water flow switch, 9 is a temperature setting device that adjusts the set temperature T ₀ ,
10 is an operation switch for instructing the start of operation of the hot water supply equipment; 11 is an operation indicator light that lights up when the operation switch 10 is turned on and the hot water supply equipment is in operation; 12 is an operation indicator light when the burner 1 is in the combustion state; This is a combustion indicator light that lights up.

[Problems to be Solved by the Invention] In recent years, it has been considered to change the temperature of hot water from a hot water supply equipment over time to obtain a pine surge effect using a shower or the like as a hot water tap. To explain this pine surge effect, for example, when the hot water temperature rises above a certain set temperature, body temperature rises as a result of shower use, blood vessels expand, and blood flow is promoted. On the other hand, when the temperature of the hot water falls, the body temperature decreases, blood vessels constrict, and blood flow decreases. By repeating this rise and fall of the hot water temperature over a short period of time, the nervous system is stimulated to respond to the temperature changes, resulting in the pine surge effect. As a means for changing the hot water temperature over time, for example, by changing the supply amount of combustion gas from the burner to the heat exchanger using the function of the combustion gas supply amount adjustment means on the water heating equipment main body, It is conceivable to change the temperature of hot water from the hot water supply faucet by means of changing the amount of heat supplied to the water heater, or by changing the flow rate of water supplied to the heat exchanger of the hot water supply equipment.

However, the above-mentioned conventional hot water supply equipment only controls the hot water temperature to be maintained at the set temperature even if the temperature of the water supplied to the heat exchanger changes or the amount of hot water changes. At the same time, it did not have a function to change the hot water temperature.

Therefore, on the water heating equipment side, it is necessary to add a new function to change the amount of heat supplied from the burner to the heat exchanger, or to change the amount of hot water output. With the means to change the combustion of the burner, it is necessary to exchange control information such as the amount of change, the pattern of change, and the start/stop of the hot water temperature change between the remote controller and the hot water supply equipment, and it is simply a function addition. If you just do it, the number of signal lines for that will increase,
There is a disadvantage that compatibility with conventional equipment is lost and major changes in design and construction are required. On the other hand, the latter method of varying the amount of hot water dispensed has the disadvantage that if the initial amount of hot water dispensed from the hot water faucet is not constant, the range of flow rate to be varied becomes unstable, making it difficult to set the amount of hot water dispensed arbitrarily. . Furthermore, it becomes necessary to newly provide a means for changing the amount of hot water dispensed in the hot water supply equipment main body. Furthermore, there is also the disadvantage that the number of signal lines between the remote controller and the hot water supply equipment increases, similar to when changing the amount of heat.

In other words, in order to add a function that changes the outlet temperature of hot water over time to the hot water supply equipment with the conventional configuration described above, it is necessary to change the structure of the hot water supply equipment itself, or to add a function that changes the outlet temperature of hot water over time. Disadvantages include the need to manufacture a dedicated hot water supply facility, and the need for new design changes on the hot water supply facility side, such as an increase in the number of signal lines for the remote controller.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide a special means for changing the temperature of hot water from the hot water supply equipment over time by adding special means to the signal line of the water heating equipment itself or the remote controller. The purpose of the present invention is to enable the setting and control of operating conditions to be performed on the remote controller side without the need to newly provide a controller.

[Means for solving problems]

A feature of the combustion control device for hot water supply equipment according to the present invention is that a set temperature changing means for changing the set temperature set by the remote controller over time is provided on the remote controller side, and its functions and effects are as follows. It is as follows.

[Effect]

That is, the set temperature information itself, which is set on the remote controller side and transmitted to the hot water supply equipment main body side and serves as the control target for the hot water temperature, is set on the remote controller side, and the temperature set by the temperature setting means, for example, is set on the remote controller side. , the temperature is changed over time in a predetermined temperature range, and this changing temperature information is transmitted to the main body as a set temperature, and the main body side, based on the set temperature information that changes over time,
By controlling the hot water outlet temperature to be maintained at a set temperature as in the conventional method, the hot water outlet temperature can be changed over time.

〔Effect of the invention〕

In other words, since the remote controller changes the set temperature, which is the control target for the hot water temperature, there is no need to provide a new means for changing the hot water temperature on the hot water supply equipment side. There is no need to separate the control information from the set temperature information and transmit it to the hot water supply equipment main body. Therefore, the conventional configuration of the hot water supply equipment can be used as is by simply changing the design by adding functions to the remote controller.
Furthermore, it is also possible to use a conventional remote controller that does not have a function of changing the temperature of tapped water over time and a remote controller that is equipped with a set temperature changing means according to the present invention.

Furthermore, since the remote controller is equipped with a means for changing the hot water temperature over time, the progress of changes in the hot water temperature can be displayed on the remote controller without changing the configuration of the hot water supply equipment itself. It's easy to do.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in Figure 4, remote controller B
When the operation switch 10 provided on the main controller B ₁ as a controller is turned on, the operation indicator light 11 lights up, and when the hot water supply equipment is ready for use, the shower controller B as the main controller B ₁ or another remote controller B is turned on. ₂
It is configured such that the temperature of hot water discharged from the hot water supply faucet 3 can be arbitrarily set. When the hot water tap 3 is opened, the water flow switch 7 provided on the side of the hot water supply equipment body A is turned on, the burner controller 2 as a combustion control means is activated, the gas solenoid valve 5 is opened, and the The proportional valve 4 that regulates the supply of combustion gas is opened, the burner 1 is automatically ignited, and the combustion indicator light 12a is lit. After that, the hot water temperature indicator light 13 is displayed as a 10-step bar graph.
If you operate the hot water temperature setting switch 9a as a hot water temperature setting means while checking the lighting position of a, and set the set temperature T ₀ which is the control target for the hot water temperature,
A thermistor Th as a detection means for the hot water temperature T provided in the hot water flow path from the heat exchanger 8 to the hot water tap 3
so that the detected temperature T and the set temperature _T0 set by the hot water temperature setting switch 9a match,
The amount of gas supplied to the burner 1 is adjusted by controlling the opening degree of the proportional valve 4. In addition, in Figure 4, 6
is a water governor.

And the shower controller B ₂ also includes:
Similarly to the main controller B ₁ , a hot water temperature setting switch 9b, a combustion indicator light 12b, and a hot water temperature indicator light 13b displayed as a 10-step bar graph are provided, and the shower controller takes priority over the main controller B _1. On the _B2 side,
A priority switch 14 that instructs to set the hot water temperature and the setting of the hot water outlet temperature change control described later, a priority indicator light 15b that displays the same, and a cycle shower switch 1 that instructs the pattern of the hot water outlet temperature change control.
6 and its indicator lights 17a, 17b, and 17c are provided.

A priority indicator light 15a that lights up when the priority indicator light 15b is turned off is also provided on the main controller B ₁ side, and indicates which side of the main controller B ₁ or the shower controller B ₂ has priority in combustion control. It is configured to do so.

Below, the operation of the shower controller _B2 is as follows:
The explanation will be based on the block diagram shown in FIG. 1, the flow chart shown in FIG. 2, and the time chart shown in FIG.

That is, a control device E configured by a microcomputer operated by a power supply Vcc supplied from the hot water supply equipment main body A side is configured to control the hot water temperature setting switch 9b, the priority switch 14, and the hot water temperature change that changes the outlet temperature over time. Cycle shower switch 1 for starting control and selecting its pattern
Signals from each switch 6 are input, and the lighting of the combustion indicator light 12b, the hot water temperature indicator light 13b, and the priority indicator light 15b is controlled according to the operating state of each switch. Controls the ground points of the hot water temperature setting resistors _R1 to _R10 , and at the same time controls the set temperature _T0 of the hot water temperature display elements _L1 to _L10 using ten light emitting diodes that constitute the hot water temperature indicator light 13b. The element located at the position corresponding to the light is turned on. When the priority switch 14 is turned on, the serially connected ends of the setting resistors R ₁ to R ₁₀ are connected to the hot water tap via the switch circuit SW ₃ and the fourth connection terminal J ₄ which are turned on by the control device E when the priority switch 14 is turned on. The thermistor (Th) that constitutes the temperature deviation detection bridge D that detects the deviation between the temperature T and the set temperature T ₀
The reference resistance value corresponds to the set temperature _T0 . When the priority switch 14 is turned on, the priority indicator light 15a on the main controller _B1 side connected via the second connection terminal _J2 is turned off, and the switch connected to the fourth connection terminal _J4 is turned off. Circuit SW ₄ is turned OFF, and this switch circuit SW ₄ and the third connection terminal J ₃
The connection between the thermistor Th and the reference resistor Rs corresponding to the set temperature T ₀ on the side of the main controller B ₁ connected via the main controller B 1 is disconnected, so that the temperature setting by the shower controller B ₂ takes priority.

The hot water temperature setting switch 9b is composed of two switches: a hot water temperature increase instruction switch _SW1 which generates a signal to raise the set temperature _T0 from the current set value, and a hot water temperature decrease instruction switch _SW2 which causes the hot water temperature to decrease. , the set temperature T ₀ moves up and down in steps according to the number of ON operations of each switch SW ₁ and SW ₂ .

Further, the combustion display signal _S1 inputted from the burner controller 2 via the fifth connection terminal _J5 turns on the combustion indicator lamp 12b and is also inputted to the control device E. Then, when the combustion of the burner 1 stops and the combustion display signal _S1 becomes "L" level, the hot water temperature change control state by the cycle shower switch 16 is canceled,
Normal temperature control is resumed in which the outlet temperature T is maintained at the set temperature T ₀ by the hot water temperature setting switch 9b.

Further, the cycle shower switch 16 is configured such that the hot water temperature change pattern sequentially changes in three stages each time it is turned on, and the hot water temperature change control is turned off when the cycle shower switch 16 is turned on for the fourth time.

Then, when the combustion display signal S ₁ becomes "H" level and the hot water supply equipment becomes usable, the priority switch 14 is turned on, and the hot water temperature can be controlled on the shower controller B ₂ side.
The control device E calculates the set temperature T ₀ by operating the hot water temperature setting switch 9b, and
Controls the grounding point of R ₁ to R ₁₀ and its set temperature
The hot water temperature indicator light 13b corresponding to T ₀ is turned on.

Next, the cycle shower switch 16 is
Checks the ON operation status, and if it is in the cycle shower mode that changes the hot water temperature T, checks the measurement time t of the timer that measures the elapse of the timing of changing the hot water temperature in this mode, and sets the time _t for a predetermined time (for example, If more than 10 seconds have elapsed, the timer is reset and the selected pattern becomes one of the three patterns P1 to _P1 shown in FIG.
Check which pattern of P ₃ it is.
On the other hand, if it is within the predetermined time t ₀ , the elapsed time is measured by counting up the measured time t of the timer.

The change patterns P ₁ to _{P 3} of the hot water tap temperature that change over time allow the user to select three levels of change width ΔT to determine how much the hot water tap temperature is changed based on the set temperature T ₀ , respectively. The time interval for changing the value, that is, the predetermined time t ₀ is set in three stages corresponding to the change width ΔT. Then, the selected patterns P ₁ , P ₂ , P ₃
Correspondingly, the predetermined time _t0 , which is the interval time of the water temperature change, is set to the preset predetermined times _t1 , _t2 , and _t3 , and the change width ΔT is also set in advance. The widths are set to predetermined widths T ₁ , T ₂ , and T ₃ .
Then, based on the direction of the change width ΔT, that is, the state of the flag F indicating whether the temperature is rising or falling (“H” if the temperature is rising, “L” if the temperature is falling), the water temperature is determined. The direction of change is set, and the change width ΔT is added or subtracted from the set temperature T ₀ to obtain a new set temperature T ₀ .

The flag F is controlled so that its "H" and "L" states are reversed every time the timer measurement time t elapses for a predetermined time t ₀ , and the direction of the hot water temperature change is changed as the predetermined time t ₁ , t 0 . It is designed to be automatically reversed every ₂ and _t3 .

In FIG. 1, _J1 is the first connection terminal for connecting the power supply Vcc, and _J6 is the sixth terminal for grounding.

In addition, in the above embodiment, the main controller
_B1 is based on the configuration of the shower controller _B2 ,
It is the same as the one except for the priority switch 14 and the configuration for changing the hot water temperature over time, and its explanation will be omitted, but it has the same configuration as the shower controller B ₂ and the main controller B ₁ side also changes the hot water temperature. It may be possible to change the .

Moreover, the time interval t ₀ of the hot water temperature change and the change width ΔT are changed in each of the three patterns P ₁ , P ₂ , and P ₃ , and either the time interval t ₀ of the hot water temperature change or the change width ΔT is changed. Either one may be kept constant. Alternatively, for each state change of the flag F, the time interval t ₀ is made to differ, for example, by making the duration time on the temperature increasing side different from the duration time on the temperature decreasing side;
Furthermore, the change width ΔT may be made different between the temperature increase side and the temperature decrease side.

Furthermore, the direction of the rise and fall of the set temperature T ₀ does not change suddenly every time the time interval t ₀ elapses, but, for example, increases and falls in steps with respect to the set temperature T ₀ . Alternatively, the water temperature may be raised and lowered continuously.In short, the time interval t ₀ of water temperature change and the change width ΔT can be set in various forms.

Further, the reference resistance Rs for temperature setting on the main controller _B1 side connected to the third connection terminal _J3 is as follows:
Instead of making stepwise changes like the temperature setting reference resistances _R1 to _R10 on the shower controller _B2 side, they may be configured to be continuously variable, for example, using a potentiometer or the like.

[Brief explanation of drawings]

The drawings show an embodiment of the combustion control device for hot water supply equipment according to the present invention, FIG. 1 is a block diagram showing the configuration of the remote controller, FIG. 2 is a flowchart showing the operation of the control device, and FIG. 3 is a flowchart showing the operation of the control device. FIG. 4, a time chart of changes, is a block diagram showing the schematic configuration of the hot water supply equipment. FIG. 5 is a block diagram showing a conventional configuration. A...Hot water equipment main body, B...Remote controller, _T0 ...Temperature setting.

Claims (1)

[Claims] 1 Set temperature T ₀ from remote controller B
A combustion control device for hot water supply equipment, which is equipped with a means for controlling outlet temperature T based on information on the side of the main body A of the hot water supply equipment, and which changes the set temperature T ₀ set by the remote controller B over time. A combustion control device for hot water supply equipment in which a changing means is provided on the remote controller B side. 2. The combustion of hot water supply equipment according to claim 1, wherein the set temperature changing means is configured to repeat a sequence of increasing or decreasing the set temperature _T0 by a predetermined width ΔT every time a predetermined time _t0 elapses. Control device.