JPH0758138B2 - Automatic bath filling method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to an automatic bath filling method for automatically dropping a bath into a bath using a bath kettle having an automatic hot water supply function for the bath.

<Conventional technology and its problems> Conventionally, when performing automatic hot water filling of a bath using a bath kettle that has an automatic hot water supply function for a bathtub, the automatic hot water supply function of the bath cooker uses a fixed wax thermostat or the like to keep a constant temperature. Since only hot water can be supplied, when the difference between the dropped hot water temperature and the set bath temperature is large, there is a drawback that it takes a long time to boil up to the set bath temperature after filling.

Therefore, the present invention eliminates the above-mentioned conventional drawbacks, even when using a bath kettle that can only supply hot water at a constant temperature for bath hot water supply, by dropping some hot water into the bathtub after heating it with a bath kettle, It is an object of the present invention to provide a new method that can shorten the time until boiling after boiling.

<Means for Solving the Problem> The method of the present invention for achieving the above-mentioned object is a normal drop in which hot water at a constant temperature discharged from a bath kettle with a hot water supply function is directly dropped into a bathtub, and the hot water discharged is the hot water An automatic hot water filling method for a bath, which is a combination of two types of dropping, that is, reheating by using a functional bath kettle and then dropping it into a bathtub, which is a _set bath temperature T _set and a bath level L. _The following (a) for _set ,
The feature is that hot water is dropped in the order of (b). That is, (a). Until the circulation judgment becomes OK by increasing the bath water level to a level that can be circulated in the circulation path, the drop amount y ′ until the circulation judgment is OK at the first automatic water filling, the normal drop temperature a, and the additional From the burning temperature b and the set bath temperature T _set this time,
A temporary normal drop amount A ₁ and a temporary additional firing drop amount B ₁ are calculated by the following formulas, and the drop is started from the normal drop,
Temporary normal drop amount A while periodically determining circulation
₁ and the tentative additional reheating amount B ₁ are alternately dropped, and the dropping is stopped when the circulation determination is OK.

A ₁ = (b−T _set ) y ′ / (ba) B ₁ = y′−A ₁ (b). Next, after the circulation judgment becomes OK, the bath temperature T when the circulation judgment becomes OK is detected, and the set bath water level L _set this time and the set bath water level L at the time of the first automatic water filling. After calculating the amount of water α corresponding to the set water level difference with ‘ _set ’, the total drop amount Q ′ during the first automatic water filling
And the drop amount y ′ until the circulation determination is OK in the first automatic filling, the water amount α corresponding to the set water level difference, the set bath temperature T _set at this time, and the circulation determination at the previous time is OK. When the bath temperature T becomes normal, the normal dropping temperature a and the reheating temperature b are calculated, the required normal dropping amount A ₂ and the circulation determination O after the circulation determination is OK by the following formula
Calculate the required reheating amount B ₂ after K, first drop the required normal dropping amount A ₂ after the circulation determination is OK, and then required reheating amount B after the circulation determination OK
Drop in ₂ .

A ₂ = {(b−T _set ) (Q ′ + α) − (b−T) y ′} / (ba) B ₂ = Q′−y ′ + α−A ₂ <Action> The bath water level is a circulation path. Until the circulation judgment becomes OK by increasing the water level that can be circulated in the first time, the circulation amount in the automatic water filling at this time is OK until the circulation judgment at the first automatic filling is OK. Assuming that the drop amount is up to the following (actually, it does not always match the drop amount until the circulation judgment in this automatic filling is OK), T _set · y ′ = a · A ₁ + b・ B ₁ …… (1) y ′ = A ₁ + B ₁ …… (2) holds, and the temporary normal drop amount A ₁ until the circulation judgment is OK is A ₁ = (b−T _set ) y ′ / (B−a) (3) Temporary additional burning amount B until circulation judgment is OK
₁ can be calculated as B ₁ = y′−A ₁ (4).

Then, the actual drop is first started from the normal drop, and the tentative normal drop amount A ₁ calculated above is periodically determined while periodically determining whether or not the bathtub water level has increased to a water level that can circulate in the circulation path. Dropped in,
If the drop of the amount A ₁ is completed without the circulation judgment being OK, then the temporary additional burning amount B _{1 is} dropped.
Will be dropped. Of course, at this time also the circulation judgment
It is monitored whether it becomes OK, and if the circulation judgment becomes OK on the way, the drop is stopped at that point. If the circulation determination does not become OK even if the provisional refueling drop amount B ₁ is dropped, the provisional normal drop amount A ₁ is dropped again. Thus, while the temporary normal drop amount A ₁ and the temporary additional heating drop amount B ₁ are dropped alternately, the drop is stopped at that point if the circulation determination is OK in the middle.

Since the dropping is started from the normal dropping and then the additional dropping is performed, it is possible to prevent the bath temperature from becoming higher than the set bath temperature T _set .

The first automatic filling is performed from an empty bathtub,
When the automatic hot water filling is performed from the empty state of the bathtub (which is the most basic case), of course, the temporary normal dropping amount A ₁ and the temporary additional heating dropping amount B ₁ are dropped. The circulation judgment should be OK when it is included.

Next, after the circulation determination is OK, the bath temperature T at that time is detected first. Then, after the water amount α corresponding to the set water level difference between the set bath level L _set this time and the set bath level L ′ _set during the first automatic water filling is calculated, the required normal drop amount A after the circulation determination OK ₂ and the required additional burning amount B ₂ after the circulation determination is OK are calculated.

In the calculation, the drop amount y ′ until the circulation judgment is OK is used during the first automatic filling, and the total drop amount Q ′ during the first automatic filling is used. Required amount = Q ′ + α The total required drop amount A ₂ + B ₂ = Q′−y ′ + α after the current circulation determination is OK, and the following equation regarding the heat amount holds.

T _set (Q ′ + α) = a · A ₂ + b · (Q ′ + α −y′−A ₂ ) + T · y ′ (5) Therefore, the required normal drop amount A ₂ after the circulation determination is OK is A ₂ = {(b−T _set ) (Q ′ + α) − (b−T) y ′} / (b−a) (6) Also, the required additional heating drop amount B ₂ after the circulation determination is OK is B ₂ = Q'-y '+ α-A ₂ (7) is calculated.

In the drop after the circulation determination is OK, the required normal drop amount A ₂ after the circulation determination is OK is dropped first, and then the necessary additional burning amount B ₂ after the circulation determination is OK is dropped. As a result, the set bath water level L _{set is obtained} , and the temperature at that time is also substantially set bath temperature T _set .

The calculation method of the drop amount before and after the circulation judgment OK is distinguished, and after the circulation judgment OK, the calculation is performed using the hot water temperature T when the circulation judgment OK, so even if there is residual water in the bath Further, it is possible to fill the bath with a temperature close to the set bath temperature T _set . Therefore, the boiling time required thereafter can be shortened.
Moreover, even in a different this time of setting the bathtub water level L _set is the set tub water level L _'set at the time of the first round automatic hot water filling of the times,
Since the difference is corrected by the water amount α, it is possible to fill the temperature close to the set bath temperature even if the water level is changed. In addition, the drop after the circulation judgment is OK is usually done first, so
The bath temperature is. Even if it is dropped, it does not exceed the set bath temperature. That is, even if the automatic filling operation is stopped midway, the bath temperature will not rise above the set bath temperature T _set at that time.

<Embodiment> FIGS. 1 to 4 are diagrams showing respective steps in an apparatus for carrying out the method of the present invention, and FIG. 5 is a flow chart showing an example of control of automatic hot water filling by a controller.
The case of automatic filling of water for the second time is shown, and (B) shows the case of automatic filling of water this time.

10 is a bathtub, and 20 is a bath kettle with a hot water supply function. A circulation path consisting of a forward pipe 31 and a return pipe 32 is provided between the bathtub 10 and the bath kettle 20, and the hot water from the bathtub 10 is heated by the heat exchange coil 33 in the bathtub 20.
Is heated as it passes through. The circuit includes two short circuits 34,
35 are provided. 36 is a three-way switching valve. A circulation pump 1, a bath water level sensor 2, a water flow switch 3, and a bath temperature sensor 4 are provided in the circulation path. An inlet pipe 21 and an outlet pipe 22 are connected to the bath kettle 20 with a hot water supply function, and a part of the inlet water and the outlet hot water flow to a bath automatic water heater pipe 24 through a wax thermomixing valve 23 for constant temperature outlet. Has been done. The bath automatic hot water supply pipe 24 is connected to the outgoing pipe 31 via a check valve 25. Reference numeral 26 is a drop solenoid valve, and 27 is a pressure reducing valve. The amount dropped into the bathtub 10 is counted by the water amount sensor 5.

When the water in the bathtub 10 reaches a water level above the circulation fitting 11, the circulation pump 1 can circulate the water, which enables reheating, and the water level and hot water temperature of the bathtub 10 can be detected by the sensors 2 and 4. It becomes detectable.

The controller 40 controls each part of the apparatus. now,
A method of automatic water filling when a bath automatic water filling operation at a certain set bath water level L _set and at a certain set bath temperature T _set is instructed from a remote controller or the like (not shown) will be described with reference to FIG.

The automatic filling is performed by a combination of a normal drop that is dropped along the thick line route shown in FIG. 1 and a reheating fire drop that is dropped along the thick line route shown in FIG.
Normal dropping temperature a and additional firing temperature B
Since the (average temperature) is constant, the controller 40 calculates the required normal drop amount and the additional drop amount. This calculation is performed separately when the bathtub water level increases to a level that allows circulation in the circulation path until the circulation determination becomes OK and after that. The circulation determination is to determine whether or not the bath water circulates along the thick line route shown in FIG. 3. If the bath water level is 11 or more, the circulation is possible and the determination is OK. Becomes The circulation determination is performed at appropriate time intervals during the drop operation.

First, the controller 40 stores the data obtained during the first automatic filling operation. That is, in FIG. 5A, the set bath temperature T ′ in the first automatic filling operation is completed when the first automatic filling operation is completed.
_set , set bath water level L' _set , total drop Q '
And the drop amount y ′ until the circulation determination is OK are stored.

When the automatic filling command is issued this time (S1), the temporary normal drop amount A ₁ and the temporary additional heating drop amount B ₁ until the circulation determination becomes OK are calculated (S2).

The calculation uses the stored drop amount y ′ until the circulation determination is OK at the time of the first automatic filling, and this amount is assumed to be the drop amount until the current circulation determination is OK. Then, from the normal dropping temperature a, the additional heating dropping temperature b, and the set bath temperature T _set this time, a temporary normal dropping amount A ₁ and a temporary additional heating amount B ₁ are calculated by the following equations.

T _set · y ′ = a · A ₁ + b · B ₁ (1) y ′ = A ₁ + B ₁ (2) A ₁ = (b−T _set ) y ′ / (ba) (3) B ₁ = y′−A ₁ (4) where, T _set : current set bath temperature y ′: drop amount until the circulation determination is OK at the first automatic filling of water a : Normal drop temperature b: Boiler drop temperature A ₁ : Temporary normal drop amount until circulation judgment is OK B ₁ : Temporary drop amount until circulation judgment is OK When the above A ₁ and B ₁ are calculated, the controller 40 starts dropping from normal dropping (S3). If the circulation judgment is OK during this drop (Yes in S4),
Stop dropping at that point. If the circulation stability does not become OK even if the temporary normal drop amount A ₁ is dropped (YES in S5), the controller 40 starts the additional burning drop (S6). And if the circulation judgment is OK in the middle of this reheating and dropping (Yes in S7),
Stop dropping at that point. If the circulation judgment is not OK even if the temporary reheating amount B ₁ is dropped (Yes in S8), the normal dropping is performed again (S
3). In this way, while normal drop-in and supplemental drop-in are alternately performed, drop-in is continued until the circulation judgment becomes OK.

As a normal case, if the automatic filling is performed from the empty state of the bathtub 10 both at the first time and this time, at the time when the temporary normal drop amount A ₁ and the temporary additional heating drop amount B ₁ are dropped. The circulation judgment is OK, and the drop amount at that time is the same as the drop amount y ′ until the circulation is stable at the first automatic hot water filling.

If automatic filling is started when there is residual water in the bathtub 10, the circulation can be judged before the drop amount becomes y '.
Becomes

In either case, by performing the normal drop-in first, even if the automatic water filling operation is stopped in the middle and the circulation judgment is OK in the middle, the bath temperature is set when the drop-in is stopped. It does not exceed the temperature T _set and become a high temperature.

In addition, when dropping into the bathtub, for example, first perform 10 l of normal dropping only at the very beginning, judge circulation, and then repeat the above 1
Dropping a fixed amount larger than 0l and judgment of circulation are performed alternately. When the drop of A ₁ is completed without the circulation judgment being OK, the route is switched to FIG. 2, the reheating is started and the drop amount becomes B ₁ while the circulation judgment is made every time a certain amount is dropped. You may repeat until. If the circulation determination does not become OK even if the amount of reheating burned in B ₁ is dropped, the normal dropping is resumed and the circulation determination is performed while dropping a fixed amount.

In the above drop, if the circulation judgment is OK (S4
Yes in S7 and Yes in S7), move on to drop after the circulation judgment is OK.

First, the controller 40 detects the bath temperature T at the time when the circulation determination is OK (S9), and then the set bath water level L this time.
_The water amount α corresponding to the set water level difference between the _set and the set bath level L ′ _set during the first automatic water filling is calculated (S
Ten). This calculation may be performed in advance and stored when the current automatic filling operation is instructed.

Then, the controller 40 next determines the total drop amount Q'during the first automatic filling, and the drop amount y'up to the circulation determination OK during the first automatic filling.
From the water amount α corresponding to the set water level difference, the set bath temperature T _set at this time, the bath temperature T when the circulation determination is OK at this time, the normal drop temperature a, and the additional heating drop temperature b, Required normal drop amount A ₂ after circulation judgment is OK and required additional burning amount B ₂ after circulation judgment is OK
Is calculated (S11).

That is, the drop amount up to the current circulation determination is the drop amount y'up to the circulation determination OK during the first automatic filling, and y'is the total bath water amount at the time when the current circulation determination is OK. Assuming that there is (when the bathtub is empty, y'is dropped, the circulation judgment is OK), the total drop amount Q'in the first automatic filling
And the water amount α corresponding to the set water level difference, the total remaining drop amount Q at this time is Q = Q′−y ′ + α, and the total water amount up to the set bath water level L _set at this time is It becomes Q '+ α. Therefore, the required normal dropping amount A ₂ after the circulation determination is OK and the required additional burning amount B ₂ after the circulation determination is OK can be calculated from the following equation (5) regarding the heat amount.

T _set (Q ′ + α) = a · A ₂ + b (Q ′ + α−y′−A
₂ ) + T · y ′ (5) That is, A ₂ = {(b−T _set ) (Q ′ + α) − (b−T) y ′}
/ (B−a) (6) B ₂ = Q′−y ′ + α−A ₂ (7)

For the drop after the circulation determination is OK, the normal drop is first performed with the amount A ₂ (S12). Next, the additional burning is performed with the amount B ₂ (S13). When the amount of A ₂ + B ₂ is dropped, the set bath level L _set is set this time.

On the other hand, the bath temperature at the time of completion of filling is just the set bath temperature T _set when the first automatic filling and the current filling are filled from the empty state.
However, in other cases, the temperature is adjusted to a temperature close to the set bath temperature T _set and the filling is completed. However, since the dropping is usually performed in such a manner that the dropping is always prioritized, the bath temperature does not exceed the _set bath temperature T _set not only at the time of completion but also during the dropping.

<Effect> The present invention is configured as described above, and according to the method of automatically filling a bath according to claim 1, even in a bath pot with a hot water supply function capable of supplying only hot water at a constant temperature, the set bath water level is: The bath can be automatically filled with water at a temperature close to the set bath temperature. Therefore, the boiling time thereafter can be shortened. In addition, since the automatic filling is prioritized for normal dropping, and the order for additional refilling is done later, even if the user turns off the automatic dropping switch etc. in the middle,
The bath temperature will never rise above the set temperature. In addition, the method of calculating the drop amount until the circulation judgment is OK,
Since the method of calculating the subsequent drop amount is distinguished and the hot water temperature T when the circulation determination is OK is used, even if there is residual water in the bath, it can be dropped to a temperature close to the set temperature. .

[Brief description of drawings]

1 to 4 are diagrams showing respective steps in the apparatus of the embodiment of the method of the present invention, FIG. 1 is a diagram showing a normal dropping process, FIG. 2 is a diagram showing a reheating-type dropping, and FIG.
FIG. 4 is a diagram showing a circulation determination process, and FIG. 4 is a diagram showing a reheating (boiling) process. FIG. 5 is a flowchart showing an example of automatic hot water filling control by the controller.
Shows the case of the first automatic filling, and (B) shows the case of the automatic filling of this time. 1: Circulation pump 2: Bathtub water level sensor 4: Bathtub temperature sensor 10: Bathtub 11: Circulation fitting 20 Bathtub with hot water supply function 23: Wax thermomixing valve 40: Controller

Claims (1)

[Claims] 1. A normal drop in which hot water of a constant temperature discharged from a bath kettle with a hot water supply function is dropped into a bathtub as it is,
It is an automatic hot water filling method for a bath, which is a combination of two types of hot water, which is hot water hot water that has been discharged from the hot water bath with the hot water supply function and is then dropped into the bathtub. An automatic bath filling method, characterized in that hot water is dropped in the following order (a) and (b) with respect to the bath temperature T _set and the bath water level L _set . (I). Until the circulation judgment becomes OK by increasing the bath water level to a level that can be circulated in the circulation path, the drop amount y ′ until the circulation judgment is OK at the first automatic water filling, the normal drop temperature a, and the additional From the burning temperature b and the set bath temperature T _set this time,
A temporary normal drop amount A ₁ and a temporary additional firing drop amount B ₁ are calculated by the following formulas, and the drop is started from the normal drop,
Temporary normal drop amount A while periodically determining circulation
₁ and the tentative additional reheating amount B ₁ are alternately dropped, and the dropping is stopped when the circulation determination is OK. A ₁ = (b−T _set ) y ′ / (ba) B ₁ = y′−A ₁ (b). Next, after the circulation judgment becomes OK, the bath temperature T when the circulation judgment becomes OK is detected, and the set bath water level L _set this time and the set bath water level L at the time of the first automatic water filling. After calculating the amount of water α corresponding to the set water level difference with ‘ _set ’, the total drop amount Q ′ during the first automatic water filling
And the drop amount y ′ until the circulation determination is OK at the first automatic filling, the water amount α corresponding to the set water level difference, the set bath temperature T _set at this time, and the circulation determination at this time is OK. When the bath temperature T becomes normal, the normal dropping temperature a and the reheating temperature b are calculated, the required normal dropping amount A ₂ and the circulation determination O after the circulation determination is OK by the following formula
Calculate the required reheating amount B ₂ after K, first drop the required normal dropping amount A ₂ after the circulation determination is OK, and then required reheating amount B after the circulation determination OK
Drop in ₂ . A ₂ = {(b−T _set ) (Q ′ + α) − (b−T) y ′} / (ba) B ₂ = Q′−y ′ + α−A ₂