JPH02219909A - Watering device of bath and bath device provided therewith - Google Patents

Abstract

PURPOSE:To judge necessary time of watering operation by regulating a combustion quantity of a gas burner so that the watering to set water temperature is fed in a hot water feed circuit when a watering switch is turned on. CONSTITUTION:In the case where it is judged that a watering switch 25 is turned on, the temperature stored in a watering temperature stored memory 69 as a watering temperature set means 66 is moved to a memory. When the opening of a gas proportional valve 62 is regulated in order to perform feed forward control, the opening of the gas proportional valve 62 is regulated with the use of the watering temperature stored in the memory to control a combustion quantity of a gas burner 6 in accordance therewith.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a water dispenser device for lukewarming hot bath water and a bath device equipped with the same.

[Prior Art and Problems] Some recent bath devices are capable of automatically adjusting the temperature of the bath water in the bathtub simply by operating an operating device placed near the bathtub. .

The above-mentioned bath system is configured as shown in FIG. 1, for example, and has a hot water supply circuit (3) connected from a heat exchanger (1) to a bathtub (2).
) is provided with an on-off valve (4) that opens and closes the circuit and a water level sensor (41) that detects the water level in the bathtub. or,
A water temperature sensor (5) for detecting the temperature of tap water supplied to the heat exchanger is attached to the L flow path (12) of the heat exchanger (1), and a water temperature sensor (5) is attached to the L flow path (12) on the upstream side thereof. is the flow meter (2
1) is provided. Further, a gas proportional valve (82) is inserted in the gas circuit (63) to the gas burner (8) that heats the heat exchanger (1).

A hot water filling temperature setting device (G1) and a hot water filling switch (23) are installed on the wall near the bathtub, and in addition to these, there is also a hot water difference switch (24) that is operated to warm up the cold bath water. A switch (hereinafter referred to as a pouring water switch) (25) that is operated to make hot water lukewarm is also provided.

With this one, when you turn on the hot water filling switch (23),
In response to the input signal, a control circuit (7) consisting of a microcomputer etc. starts operating and opens an on-off valve (0). A flow meter (21) that measures the amount of water flowing
), the water temperature sensor (5) that detects the temperature of the tap water, and the output signals of the hot water temperature setting device (81), and calculates the opening degree of the gas proportional valve (62) from these signals. The opening degree of the valve is adjusted, thereby controlling the combustion amount of the gas burner (6). That is, feedforward control is performed to supply hot water at the desired bathing temperature set in the hot water filling temperature setting device (61) to the bathtub (2) side. And bathtub (2)
When the water level of the bathing water in the bath reaches the filling completion level and a filling completion signal is issued from the water level sensor (41), the water filling operation is stopped by returning the on-off valve (4) to the closed state. let

Next, if the bathing water in the bathtub is hot and needs to be warmed up, the water pouring switch (25) can be turned on, and when the water pouring switch (25) is turned on, the gas burner ( 8) is in the process of burning, it is kept in a state of extinguishment, and a certain amount of cold water (hereinafter referred to as a plug) is pumped into the bathtub (2) by determining the output of the flow meter (21).
, thereby making the bath water lukewarm. Then, press the water pouring switch (25) - times or multiple times, and when the temperature of the bathing water drops to the desired temperature, press the water pouring switch (25) to the middle position to make the bathing water lukewarm. is completed.

However, in the case of the above conventional one, the heat exchanger (1)
Since the temperature of the tap water supplied to the water differs depending on the season, there is a problem in that the number of operations of the water supply switch (25) must be determined while taking the water temperature into consideration.

To explain the above cause in more detail, for example, the amount of pouring water that must be mixed with the bath water in order to cool the 180 liters of bath water in the bathtub (2) by 1.5 degrees is, for example, 7 in the winter when the temperature is around 5＠C.
While it only takes about 3 sentences, in spring and autumn when the tap water temperature is around 15 degrees Celsius, 10.21 sentences are required, and even more so in the summer when the water temperature is 25,608 degrees Celsius, 16 sentences are required. becomes. In other words, the amount of water required to warm bath water to the same temperature varies depending on the temperature of the tap water.

For this reason, in the conventional system described above, the number of operations of the water pouring switch (25) must be determined while taking into consideration the difference in tap water temperature.

The present invention has been made in view of the above points, and is based on heat exchange!
! Even if the temperature of the tap water supplied to (1) varies depending on the season, when the water supply switch (25) is operated in the same manner, the bath W! (2) By keeping the amount and temperature of water supplied per unit approximately constant, even if the temperature of tap water changes depending on the season, the amount of temperature drop of bathing water in the bathtub will remain approximately constant. The objective is to make it possible to predict the required number of pouring operations without considering the tap water temperature.

(Regarding the invention corresponding to claim 1) [Means] The technical means of the invention corresponding to claim 1 for solving the above problem is "a hot water supply circuit piped from the heat exchanger (1) to the bathtub (2). (3), an on-off valve (4) inserted into this hot water supply circuit (3), a water supply switch (25) that is turned on when making the bath water lukewarm, and this water supply switch (25).
5) is put into a combustion state and the heat exchange base (
a gas burner (8) for heating the water pouring water (8); The combustion amount of the gas burner (8) is controlled so that water at the water temperature set by 66) is supplied to the hot water supply circuit (3), and the on-off valve (4) is opened until a certain amount of water is supplied. A control circuit (7) is provided to maintain the valve state.

[Effect] The above technical means works as follows.

To warm up the hot bath water in the bathtub (2), just turn on the water switch (25) as in the conventional bathtub described above.

When the pouring water switch (25) is turned on, the pouring water temperature set in the pouring water level setting means (86) is applied to the control circuit (7) in response to the turning signal. Then, the control circuit (7) adjusts the combustion amount of the gas burner (8) so that the water at the temperature set in the water temperature setting means (6G) is supplied to the hot water supply circuit (3). , water heated to a constant temperature is supplied to the bathtub (2).

Then, the water heated to the above temperature is supplied to the bathtub (2) in a fixed amount in the same manner as in the conventional bathtub (2).

That is, in the present invention, the temperature of the water to be poured does not have much influence on the amount of electricity due to seasonal changes in the tap water, and since the amount of water to be poured is constant, the water to be poured switch (25)
The amount of temperature drop of the bathing water due to the -times of operation becomes almost constant.

[Effect Go The invention corresponding to claim 1 has the following specific effects.

Since the amount of decrease in temperature of the bathing water due to the operation of the water pouring switch (25) - times is almost constant, the temperature of the bathing water will drop by the temperature expected by the bather in response to the operation of pouring water (25) - times. , the required number of times to add water can be determined without considering the amount of water to be added.

(Regarding the invention corresponding to claim 2) [Means] The invention corresponding to claim 2 has the same problem as the invention corresponding to claim 1 above, and includes technical means adopted to solve the problem. A gas burner (8) that heats the heat exchanger (1), a hot water supply circuit (3) that connects the heat exchanger (1) and the bathtub (2) and includes an on-off valve (4), and a hot water supply circuit (3) that heats the heat exchanger (1); a hot water filling temperature setting device (B1) that sets the hot water filling temperature setting device (B1), a hot water filling switch (23) that is turned on when performing a hot water filling operation, and a hot water filling reswitch (23) that turns on the on-off valve (4) when the hot water filling reswitch (23) is turned on. ) is opened and the output from the hot water filling temperature setting device (81,) is applied to supply hot water at a predetermined hot water heating temperature to the hot water supply circuit (3).
A control circuit (7) is provided to control the combustion amount of the gas bar (8) so that the water is supplied to In a bath device in which the on-off valve (4) opens even when the switch (25) is turned on and a certain amount of water is supplied into the bathtub (2), the temperature of the water to be poured is set to a predetermined temperature. A control circuit (7) is provided to set the pouring water temperature setting means (G et al.), and the outputs of the pouring water temperature setting means (66) and the hot water filling temperature setting device (61) are connected via the switching means (85). is applied selectively, and the water supply switch (25
), the switching means (65) switches to the pouring water temperature setting means (66) side, and only the output of the pouring water temperature setting means (66) is applied to the control circuit (7). This is what I did.

[Action/Effect] The above technical means works as follows.

First, when performing the hot water filling operation, it is sufficient to turn on the hot water filling switch (23) in the same manner as in the conventional glue mentioned above.

When the hot water filling reswitch (23) is operated, the switching means (65) is connected to the hot water filling temperature setting device (81) side by the signal, and the hot water filling set by the hot water filling temperature setting device (G1) is changed. A signal indicating the temperature will be applied to the control circuit (7). After that, the control circuit (7) operates in the same way as the conventional one described above, and the combustion amount of the gas burner (6) is controlled by the control operation of the control circuit (7). As a result, hot water at the temperature set by the hot water filling temperature setting device (61) is supplied to the hot water supply circuit (3).

Next, when the bath water filled in the bathtub (2) is to be warmed, the water pouring switch (25) can be operated in the same manner as in the conventional bathtub described above.

When the pouring water switch (25) is operated, the switching means (65) is switched to the pouring water temperature setting means (66) side by the operation signal, and the pouring water temperature setting means (66) outputs a pouring water temperature signal. is applied to the control circuit (7). That is, the predetermined set water temperature set by the pouring water temperature setting means (86) is applied to the control circuit (7).

Then, the control circuit (7) performs the same operation as the above-mentioned hot water filling operation by using the water temperature, and raises the water temperature set by the water temperature setting means (8B). Water is supplied to the bathtub (2). Then, a fixed amount of water at this temperature is supplied to the bathtub (2) in the same way as in the conventional system described above, and the inside of the bathtub (2) is lukewarm to a substantially constant temperature by the insert.

1. In the present invention, the temperature of the water to be poured is not affected much by seasonal changes in tap water temperature, and the amount of water to be poured is constant.
The amount of temperature drop of the bathing water due to the -times of operation 5) becomes almost constant, and the same effect as the invention of claim 1 described above can be obtained. In other words, the temperature of the bathing water is lowered by the expected temperature for - times of pouring water, and the pouring operation can be performed without considering the water temperature.

[Example] Next, the above-described example of the present invention will be described in detail with reference to the drawings.

Bath 11! Hot water supply circuit (3) connecting (2) and heat exchanger (1)
The circuit configuration of the gas circuit (63) to the gas burner (6), etc. is similar to that shown in FIG. A control program as shown in the flowchart is written.Next, the operation of the bath apparatus according to the embodiment of the present invention will be explained according to the flowchart.

First, it is determined whether or not a hot water filling temperature change switch (not shown) provided in the hot water filling temperature setting device (B1) has been turned on.
When the switch is turned on, the hot water temperature setting is 1it (61)
A step (81) of performing a hot water temperature changing operation is executed. Then, the hot water filling temperature changed by the hot water filling temperature setting device (61) is stored in a specific hot water filling temperature storage memory (50) in the microcomputer (see figure numeral (so)).
(see step (st)).

Next, the operation of the bath apparatus according to the embodiment of the present invention will be described as a hot water filling operation,
Each operation of pouring water and pouring hot water will be explained separately.

(Regarding hot water filling operation) 00 Next, it is determined whether or not the hot water filling switch (23) has been turned on, and if the hot water filling switch (23) has been turned on, the operation performed is a hot water filling operation. A flag (F), which is necessary when determining a certain thing later, is set in rlJ.Furthermore, it is set by the hot water filling temperature setting device (81) and stored in the hot water filling temperature memory (50). Transfer the hot water filling temperature to the memory (↑) (drawing code, (8)
B), see step (82)).

00 Next, the program control moves to the step described at the right end of FIG. 2, and first, the on-off valve (4) is opened (see step number (83) in the drawing).

■ Next, the flow rate (flow rate) of water flowing through the water circuit per unit time.
is read from the flow meter (21), and the flow rate and the water temperature detected by the water temperature sensor (5) that detects the temperature of the tap water supplied to the heat exchanger (1) are also stored in the memory (T). The gas circuit (63) to the gas burner (6)
) is calculated, the opening degree of the gas proportional valve (62) inserted in the
The opening degree of the gas proportional valve (82) is controlled according to the calculation result. That is, the combustion amount of the gas burner (6) is controlled in a feedforward manner so that hot water at a temperature matching the hot water filling temperature stored in the memory (T) is supplied to the bathtub (2). Yes (drawing code (84)
, see step (135)).

00 Next, check the contents of the flag (F), and if the contents of the flag (F) are "1", the hot water filling operation is in progress with the hot water filling reswitch (23) turned on. Once it is determined, the output of the water level sensor (41) is monitored, and a water filling completion signal is output from the water level sensor (41), indicating that the bathing water in the bathtub (2) has reached the filling completion level. If it is determined, the on-off valve (4) is closed to complete the filling operation. Thereafter, the program process returns to step (2) (see steps (H), (87), and ('31) in the drawing).

About pouring water operation〉 If it is determined that the pouring water switch (25) is turned on when step ① in the above-mentioned hot water filling operation is executed, the hot water filling temperature during the above-mentioned hot water filling operation will be changed. Instead, the temperature stored in the pouring water temperature storage memory (69) as the pouring water temperature setting means (66) (in this embodiment, it is set to 271C, which is set slightly higher than the tap water temperature in summer). ) is moved to the memory (T), "z" is set in the flag CF), and "2" is set in the flag (F) to enable later determination of r(). is done, and the first step is the same operation as ① and ③ in the above-mentioned hot water filling operation, that is, the second
Drawing reference number (83) in the figure. (84), (85)
Step 2 is executed. Then, the opening degree of the gas proportional valve (62) is adjusted to perform feedforward control (6
When performing step 5), the gas proportional valve (
The opening degree of gas burner (62) is adjusted accordingly.
) combustion amount is controlled. In other words, water heated to 27°C, which is slightly higher than the tap water temperature in the summer, is sent to the bathtub (2), and water at a constant temperature is poured into the bathtub regardless of the season. (2).

In this embodiment, when the hot water filling switch (23) is turned on, the stored temperature in the hot water filling temperature storage memory (50) is selected, and conversely, when the hot water filling switch (25) is turned on, the temperature stored in the hot water filling temperature storage memory (50) is selected. The functional part of the microcomputer that selects the water temperature storage memory (66) is configured by the switching means (
35).

Next, check the contents of the flag (F) to determine whether or not the water pouring operation is in progress, and check the contents of the flag (F), and
) is not "1", it is determined from the output of the flow meter (21) whether a certain amount of water (set to 1741 in this example) has been supplied to the bathtub (2). (refer to step (3G) in the drawing), then close the on-off valve (4) to complete the water pouring operation.

In addition, 171 pieces of water were poured into the bathtub (2
) In the case of the bath 1801, the temperature drops by about 1.5 dsg, so using this temperature as a guide, set the water supply switch (2
Repeat step 5) as many times as necessary to make the bathing water lukewarm to your liking.

In this device, as mentioned above, since the temperature of a certain amount of water sent into the bathtub (2) is constant regardless of the season, by operating the water pouring switch (25) - times, , the amount of temperature drop in bathing water remains constant regardless of seasonal changes (the temperature of tap water also changes).

Therefore, there is no need to take into account the difference in tap water temperature due to seasonal changes, unlike in the conventional system described above, and there is no need to operate the water supply switch (25) more times than necessary in the summer. This eliminates the inconvenience of complicated water pouring operations.

Incidentally, the essential parts for realizing the above-mentioned water pouring operation in this embodiment correspond to the invention of claim 1.

<About differential hot water operation> Finally, while performing step ■ mentioned above,
When it is confirmed that the hot water switch (20) has been turned on,
Instead of the pouring water temperature of 27°C during the pouring operation, the hot water temperature (80°C in this example) pre-written in the hot water temperature storage memory (66) is used to maintain a constant temperature. A different amount of hot water is created, thereby raising the temperature of the bathtub (2) by a certain amount.

In the above embodiment, by performing feedforward control, the bath If! (2) The temperature of the water to be supplied into the chamber is raised to a constant temperature, but a hot water temperature sensor is attached to the downstream side of the heat exchanger (1), and the output of the hot water temperature sensor and the temperature of the poured water are It goes without saying that the present invention can also be adopted in a bath apparatus that employs a proportional control method in which the combustion amount of the svarna (6) is controlled while comparing the temperature of the added water stored in the storage memory (69).

In this case, heat exchange 2! The output of the hot water temperature sensor attached downstream of (1) is applied as a comparison voltage to a comparator such as a converter, and the voltage generated by a fixed resistor or variable resistor is applied as a reference voltage to the comparator. It's okay.

In this case, the fixed resistor or variable resistor for creating the reference voltage corresponds to the pouring water temperature setting means (e8) described in the technical means mentioned above.

Further, in the above embodiment, the bathtub (
2) I decided to judge the amount of water supplied, but
It is also possible to manage the on-off valve (4) only in terms of time without determining the output of the flow meter (21) and open it only for a certain period of time. In such a case, it is particularly useful in proportionally controlled baths that are not necessarily provided with a flow meter (21).

Furthermore, as another means for determining the amount of water to be supplied to bathtub 2 (2), a water level sensor is provided to detect the water level of bathtub 5, and the output of the water level sensor is used to detect changes in the water level in the bathtub during pouring water. The amount of water supplied to the bathtub (2) may be determined based on the change in the water level.

In addition, in the above embodiment, water at the tap water temperature or slightly higher than that in the summer is supplied to the bathtub (2) as pour water, but it is not necessarily the case that the water supply is common to all seasons. There is no need to set the temperature; for example, by setting the water temperature to around 206C, and on mid-summer days, etc., when the frequency of occurrence is low, tap water can be supplied to the attached bathtub without heating it. In addition, in the above-mentioned method, which heats the tap water and pours it into the bathtub only in spring, autumn, and winter when the tap water temperature is relatively low, Another advantage is that it can prevent drainage from occurring in the heat exchanger section.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of the bath device, and FIG. 2 is a flowchart showing a control program for the bath device in an embodiment of the present invention. )...Fistful closing valve (8) ・ (23) Gas circuit/water temperature setting means

Claims (1)

[Claims] [1] A hot water supply circuit (3) piped from a heat exchanger (1) to a bathtub (2), an on-off valve (4) inserted into this hot water supply circuit (3), and a bathtub (2). The water dispenser switch (25) that is used to make the water lukewarm, and this water dispenser switch (25)
) enters the combustion state and the heat exchanger (1
), a gas burner (6) for heating the pouring water temperature setting means (66) for setting the temperature of the pouring water to a predetermined temperature, and a pouring water temperature setting means (66) for setting the pouring water temperature to a predetermined temperature; The gas burner (
6) and a control circuit (7) that controls the amount of combustion and maintains the on-off valve (4) in an open state until a certain amount of water is supplied. [2] A gas burner (6) that heats the heat exchanger (1), and an on-off valve (
4), a hot water filling temperature setting device (61) for setting the hot water filling temperature, a hot water filling switch (23) that is turned on when filling the hot water, and the hot water filling switch ( 2
When the input signal of 3) is received, the on-off valve (4) is opened and the output from the hot water filling temperature setting device (61) is applied to supply hot water at a predetermined hot water filling temperature to the hot water supply circuit (3). A control circuit (7) for controlling the combustion amount of the gas burner (6) so that the amount of water is heated is further provided, and a water pouring switch (25) that is turned on when performing an operation to make the bathing water lukewarm. ), the on-off valve (4) opens to supply a certain amount of water into the bathtub (2), and the water temperature is set to a predetermined temperature. In addition to providing a pouring water temperature setting means (66), the pouring water temperature setting means (66) and a hot water temperature setting device (61) are provided.
is selectively applied to the control circuit (7) via the switching means (65), and when the pouring water switch (25) is turned on, the switching means (65) switches the pouring water temperature setting means (66).
) side so that only the output of the water temperature setting means (66) is applied to the control circuit (7).