JPH0289954A - Combustion control device for bath heater - Google Patents

Abstract

PURPOSE:To make it possible to conduct heat-up operation even if the detected temperature by a temperature sensor is over a specified temperature by burning forcibly a bath heater for a certain time when heat-up operation is started and, after a certain time has passed, judging whether or not the hot water temperature is over a set temperature. CONSTITUTION:A bath heater is forcibly burned by forced combustion means 17 and combustion control device 19 with no relation to initial temperature detected by a temperature sensor 12, and at timer count means 18 the timer count of time TB for operating the forced combustion means 17 for a certain time is conducted. After this when a certain time TB of the forced combustion is finished and a set temperature comparison device 15 judges that detected temperature by the temperature sensor 12 is higher than the temperature set by temperature setting means 22 for the temperature of heat-up, the combustion of the bath heater is stopped by heat-up stop means 20, and the state of standing-by is given for a certain time TA which is counted in timer count means 21. Later if, after the certain time is finished, the set temperature comparison device 15 detects temperature over the set temperature, the outside is informed that the bath is ready by heat-up alarm means 23.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a combustion control device for a hot water bath pot for general household use.

BACKGROUND ART FIGS. 5 and 6 show a conventional example of a combustion control device for a bathtub.

In FIG. 5, 24 is a temperature sensor for detecting the temperature of water in the bath kettle, and 25 is switch input determining means for determining switch inputs such as a boiling operation switch. 27
is a boiling temperature setting means for setting the boiling temperature. Reference numeral 26 denotes a set temperature comparing means for comparing the respective temperatures of the temperature sensor 24 and the boiling temperature setting means 27 and determining whether the temperature is above or below the set temperature. Reference numeral 28 denotes forced combustion means that causes the bathtub to burn when the set temperature comparing means 26 determines that the temperature is lower than the set temperature.

The operating state will be explained based on FIG. When the temperature detected by the temperature sensor 24 is To, the boiling temperature setting means 2
Assume that the set temperature of No. 7 is T s (T s < To ). When the boiling operation is started in the above state, first, the set temperature comparing means 26 compares the detected temperature T0 of the temperature sensor 24 and the set temperature Ts of the boiling temperature setting means 27.

However, here, the relationship between the detected temperature T0 and the set temperature Ts is
Since 'ro>'rs, the state does not change to the forced combustion means 28, and the bathtub continues to maintain the stopped state. Therefore, the temperature T detected by the temperature sensor 24 gradually decreases after time to.

Problems to be Solved by the Invention However, with the above-mentioned conventional control device, the user feels that the water temperature in the bathtub is low while taking a bath, and even if he tries to boil the water, if the water temperature is lower than the set temperature, the bath will be turned off. It became impossible to burn the pot, and the temperature had to be reset to a higher temperature.

SUMMARY OF THE INVENTION In order to solve the above problems, it is an object of the present invention to provide combustion control for a bathtub that enables boiling operation even when the temperature detected by a temperature sensor is higher than a set temperature.

Means for Solving the Problems In order to achieve the above object, the combustion control device of the present invention forcibly burns the bath kettle for a certain period of time when the boiling operation is started, regardless of the temperature detected by the temperature sensor. The combustion means is provided, and after a certain period of time has elapsed, it is determined whether or not the temperature is higher than the set temperature.

Effect of the present invention With the above-described configuration, when the user feels that the water temperature in the bathtub is low while taking a bath, even if the water temperature is higher than the set temperature, the boiling operation can be started. It becomes possible to force the bath kettle to burn for a certain period of time, which improves usability.

Embodiment Figure 2 is a block diagram of a bathtub showing an embodiment of the invention in 2010.
is a heat exchanger 2, a burner 3, a solenoid valve 4 that supplies gas, a bath-side solenoid valve 5, a temperature sensor 6 that detects the temperature of water in the bathtub, and the burner 3 and the solenoid valve 4. This bath kettle is equipped with a combustion control device 7 that processes signals of a bath-side solenoid valve 5 and a temperature sensor 6, respectively. 8 is a remote control for remotely controlling the bathtub. Operation remote control 8
A boiling operation switch 10 and a boiling temperature setting volume 9 are built inside. 11 is a bathtub.

FIG. 3 is a block diagram of the combustion control device of the present invention.
The figure is a time chart of the combustion control device of the present invention, and FIG. 4 is a schematic flowchart of the combustion control device of the present invention.

In FIG. 1, 12 is a temperature sensor that detects the temperature of water in the bathtub, 13 is abnormal temperature detection means that detects failures and abnormal temperatures in the temperature sensor 2, and 14 is abnormality content detected by the abnormal temperature detection means 13. This is an abnormality display means for notifying the outside. 22 is a boiling setting means for setting a boiling temperature, and 15 is a set temperature comparison means for comparing the temperature detected by the temperature sensor 12 and the temperature set by the boiling temperature setting means 22. 16 is a switch input determining means for determining whether the boiling operation switch 10 in FIG. It is a forced combustion means that has a timer counting means (B) 18 that counts the amount of time, and forcibly burns the bath kettle. Reference numeral 19 denotes combustion control means for controlling the ignition sequence of the bathtub by the forced combustion means 17. 20 has a timer counting means (A) 21 for counting a certain period of time tA, and after the set temperature comparing means 15 determines that the temperature is higher than the set temperature, the combustion of the bath pot is stopped;
In addition, it is a boiling stop means that makes the boiling standby. 23, when a certain period of time TA has elapsed with the boiling stop means 20,
This is a boiling notification means for notifying the outside of boiling.

The operation will be explained below with reference to FIGS. 3 and 4.

When the boiling boiler 10 in FIG. 2 is turned ON, when the switch input determination means 16 in FIG. starts and combustion begins. At the same time, the timer counting means (B) 1B counts a time T in order to operate the forced combustion means 17 for a certain period of time. After that, a certain period of forced combustion T,
When the set temperature comparing means 15 determines that the temperature detected by the temperature sensor 12 has become higher than the temperature set by the boiling temperature setting means 22, the boiling stopping means 20
The combustion of the bath kettle is stopped and the timer counting means (A
)2] is in a standby state for a certain period of time TA counted within. Thereafter, if the set temperature comparing means 15 detects the set temperature or higher as described above after a certain period of time has elapsed, the boiling notifying means 23 notifies the outside of the boiling, and the boiling operation sequence ends.

As described above, FIGS. 3(a) and 3(b) show the state in which the bathtub is forced to burn regardless of the initial temperature of the temperature sensor 12.
This is shown as a time chart. FIG. 3(a) shows the initial temperature T0 detected by the temperature sensor 12 and the boiling temperature setting means 2.
The relationship with the temperature Ts set in step 2 is T o > T s
(b) is a time chart showing the operation when the relationship between the detected initial temperature T0 and the set temperature Ts is T,
11 is a time chart showing the operation when <Ts. In FIG. 3, time t. From 1. The period up to is the time counted by the timer counting means (B) 1B during which the forced combustion means 17 operates, and the time from L1 to t2 is the timer counting means (A) during which the boiling stop means 10 is on standby.
23 is the time t1 at which the force is turned off.

In addition, the boiling switch 10 was turned to O under the conditions shown in Fig. 3(b).
NL, when burning the bath pot 1, in order to prevent over-boiling during forced combustion, when the abnormal temperature detection means 13 detects that the temperature detected by the temperature sensor 12 is abnormal, the abnormality display means 1
4 notifies the outside of a temperature abnormality and also has a safety device that stops combustion in the bath pot 1.

Effects of the Invention As described above, as a means of controlling the boiling operation of the bath kettle, even if the initial detection temperature of the temperature sensor is abnormal at the boiling set temperature, the bath kettle can be fired by operating the boil switch. become.

Therefore, for example, if a user feels that the water temperature in the bathtub is lukewarm and wants to raise the water temperature while taking a bath, the boiler switch can be turned on.
The bath kettle can be forced to burn by N operation, and
The OFF device can stop combustion, and can serve the same role as the reheating function.

[Brief explanation of drawings]

Fig. 1 is a block diagram of the combustion control device of the present invention, Fig. 2 is a block diagram of a bath boiler equipped with an embodiment of the present invention, and Fig. 3 shows the relationship between temperature during two hours of boiling operation. The time chart in FIG. 4 is a schematic flowchart of the combustion control device of the present invention. FIG. 5 is a block diagram of a conventional combustion control device, and FIG. 6 is a time chart showing the relationship between temperature and time according to FIG. 12... Temperature sensor, 16... Switch input determination means, 22... Boiling temperature setting means, 17... Forced combustion means, 15... ...
Set temperature comparison means, 18... Timer counting means (B), 20... Boiling stop means, 21.
...Timer counting means (A), 19...
... Combustion control means. Name of agent Patent attorney Shigetaka Awano Haka 1 name Foil diagram ↑ Gas θ 笥 彆J hi τ1 τ2 hir t29 one side open [

Claims (1)

[Claims] A switch determining means for determining the input of an operation switch for operating the hot water supply bath pot; a temperature sensor for detecting the boiling temperature of the bathtub; a boiling setting means for setting the boiling temperature; and the temperature sensor. and a boiling temperature setting means, a forced combustion means for forcibly burning the bathtub for a certain period of time by the switch input determination means, and an ignition sequence for the bathtub by the forced combustion means. a combustion control means for controlling the boiling operation; a boiling stop means for stopping the boiling operation when the set temperature comparison means detects a temperature higher than the set temperature; and a boiling stop means for maintaining the boiling operation in a standby state for a certain period of time; Boiling notifying means for notifying the outside of the end of the waiting time; abnormal temperature detecting means for determining failure of the temperature sensor and abnormality in the detected temperature; What is claimed is: 1. A combustion control device for a bath kettle, comprising an abnormality display means for notifying the user, and forcibly causing the bath kettle to burn for a certain period of time even if the temperature of the initial temperature sensor is higher than a set temperature.