JPH0525252U - Bath equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to a bath device having an automatic water filling function, and makes it possible to shorten the time required for water filling while supplementing warm water to the cold residual water in the bathtub. . [Structure] High temperature that outputs a high temperature signal when the temperature inside the bathtub detected by the additional heating temperature sensor (31) and the set temperature of the hot water temperature setter (62) are compared and the latter set temperature is higher than the former water temperature by a predetermined temperature A signal generator is provided, and when the high temperature signal generator outputs a high temperature signal, hot water slightly hotter than the set temperature of the hot water temperature setting device (62) is boiled in the hot water supply heat exchanger (4) and this is bathed. It was put into (2).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bath device having an automatic filling function for automatically filling a bathtub to a target water level, and the time required for filling hot water while supplementing the cold residual water in the bathtub with hot water. Is designed to be short.

[0002]

[Prior art and problems]

 There is, for example, one shown in FIG. 1 as a water filling device that stops the water filling operation when the hot water for water filling poured into the bath reaches the target water level. The reheating circuit (3) circulating between the bathtub (2) and the reheating heat exchanger (1) has a reheating temperature sensor located upstream and downstream of the reheating heat exchanger (1). (31), circulation pump (P) and water level sensor (32) are inserted.

In the flow path between the reheating heat exchanger (1) and the circulation pump (P) in the reheating circuit (3), hot water having a larger capacity than the reheating heat exchanger (1) is supplied. The hot water supply circuit (40) drawn from the heat exchanger (4) for heating is connected to the hot water supply circuit (40), which is located downstream of the heat exchanger for hot water supply (4). ), The filling valve (42) and the check valve (43) are inserted in this order.

Combustion control of the gas burners (45) (15) for heating the hot water supply heat exchanger (4) and the reheating heat exchanger (1) is performed by the control device (5), Further, the control device (5) is connected with an operation switch (61) operated at the time of automatic water filling and a water temperature setting device (62) for setting the water filling temperature. In addition, the control device (5) includes the additional heating temperature sensor (31) and the water level sensor (32) inserted in the additional heating circuit (3), and the hot water temperature sensor (41) of the hot water supply circuit (40). ) Is applied.

The conventional bath apparatus performs a filling operation as shown in FIG. When the operation switch (61) is turned on, the hot water supply burner (45) is burnt and the hot water filling valve (42) is opened, whereby the hot water filling operation to the bathtub (2) is started. Next, the water level in the bathtub (2) is monitored by the water level sensor (32), and when the water level reaches the target water level, the hot water supply burner (45) is extinguished and the water filling valve (42) is closed to fill the water. Stop the operation.

Next, in order to compensate for the temperature in the bathtub (2) that has been lowered during the continuous filling of water, the reheating burner (15) is burned and the circulation pump (P) is driven, whereby the reheating The inside of the bathtub (2) is heated until the temperature inside the bathtub detected by the temperature sensor (31) rises to the set temperature of the hot water temperature setting device (62). However, with the above-mentioned conventional one, when attempting to fill hot water while supplementing hot water to the cold residual water in the bathtub (2) (for example, the remaining hot water of the bath on the previous day), the filling of water and the subsequent heating are completed. There was a problem that it took a long time.

The above problems will be described in more detail. During the water filling operation, the hot water supply heat exchanger (4) heats the supplementary hot water that is newly replenished in the bathtub (2), but the residual water existing in the bathtub (2) from the beginning remains in the hot water supply heat exchanger (4). The temperature is not raised by heating with). That is, the residual water is heated exclusively by the heat exchanger for reheating (1). However, since the heat exchanger for reheating (1) has a smaller capacity than the heat exchanger for hot water supply (4), the heat exchanger for hot water supply (4), which has a large capacity, does not increase the temperature of the residual water at all. The time required for heating the bathtub (2) is increased by the amount that does not contribute, and the time until the operation is completed becomes longer. [Regarding the invention of claim 1] The invention of claim 1 is made in view of the above-mentioned point, and is described as "a heating circuit (1) that circulates between the heat exchanger (1) for heating and the bath (2)". The circulation pump (P) and the reheating temperature sensor (31) inserted in 3) and the above reheating heat exchanger (1) have a larger capacity and generate hot water for filling the bath (2). It is equipped with a heat exchanger for hot water supply (4) and a water level sensor (32) for detecting the water level in the bathtub (2). The output of the water level sensor (32) brings the inside of the bathtub (2) to the target water level. If it is judged that the bath is filled with water, the reheating burner (15) and circulation pump (P) are used to heat the bath (2) to the set temperature. (2) The task is to make it possible to shorten the time required for filling the inside of the tank with hot water.

[0008]

[Technical means]

 The technical means of the invention according to claim 1 for solving the above-mentioned problem is "residual water detection which outputs a residual water detection signal when residual water exists in the bathtub (2) when the operation switch (61) is turned on. Device, and when the residual water detection device outputs the residual water detection signal, the circulating pump (P) is driven, and the detected water temperature and hot water temperature setting device (62) of the post-heating temperature sensor (31) after the driving If the latter set temperature is higher than the former detected temperature by a predetermined temperature, a high temperature signal generator that outputs a high temperature signal is provided, and if the high temperature signal generator outputs a high temperature signal, the hot water temperature setting is performed. That is, hot water having a temperature slightly higher than the set temperature of the vessel (62) is boiled in the hot water supply heat exchanger (4) and put into the bathtub (2). "

[0009]

[Action]

 The above technical means act as follows. When the operation switch (61) is turned on, the residual water detection device determines whether or not the residual water in the bathtub (2) is present. Next, when the residual water determination device outputs the residual water detection signal, the high temperature signal generator operates. That is, the circulation pump (P) is driven to circulate the water in the bath in the reheating circuit (3), and the water temperature detected by the reheating temperature sensor (31) after the circulation and the hot water temperature setting device (62) The set temperatures are compared, and when the set temperature of the latter is higher than the detected temperature of the former by a predetermined temperature, a high temperature signal is output. When the high temperature signal is output, hot water slightly hotter than the set temperature of the hot water temperature setting device (62) generated by heating in the hot water supply heat exchanger (4) is supplied to the bathtub (2). Fill with water.

After that, when the above-mentioned hot water supply operation continues and the bathtub (2) reaches the target water level, the water level sensor (32) detects this and supplies hot water to the bathtub (2) as in the conventional one. The operation is stopped and the temperature in the bathtub (2) is raised until the temperature rises to the set temperature of the hot water temperature setting device (62). Thus, according to the above technical means, when cold residual water exists in the bathtub (2), hot water having a temperature higher than the temperature at which it is originally filled will be boiled in the hot water supply heat exchanger (4) part. Since it is filled with hot water, there is less need to raise the insufficient temperature only in the heat exchanger for reheating (1) having a smaller capacity than the heat exchanger for hot water supply (4).

[0011]

【effect】

 The device of claim 1 has the following unique effects. When cold residual water exists in the bathtub (2), hot water having a temperature higher than the temperature at which it is originally filled is boiled in the hot water supply heat exchanger (4) and supplied to the bathtub (2). Up to the set temperature / target water level in the bathtub (2) compared to the conventional one in which hot water with a preset temperature is supplied to the bathtub (2) and then heated with a small capacity heat exchanger for reheating (1) It takes less time.

[0012]

【Example】

 Next, an embodiment of the invention of claim 1 will be described. The bath apparatus used in the embodiment of the present invention has the same structure as that of FIG. 1 described above, and the hot water heat exchanger (4) and the hot water burner (45) for heating the hot water heat exchanger (4) are for additional heating. It has three times the capacity of the heat exchanger (1) and the reburning burner (15). Then, the bath apparatus of this embodiment executes the operation having the contents shown in the flowchart of FIG. ． When the operation switch (61) is operated, the output of the water level sensor (32) is judged to judge the presence or absence of residual water in the bathtub (2) (see steps (70) and (71) in the drawing). In this embodiment, the step of drawing reference numeral (71) for judging the output of the water level sensor (32) to judge the presence or absence of residual water in the bathtub (2) is described in the technical means section. Corresponds to the water detection device. ． When there is residual water in the bathtub (2) up to the water level of the connection port (20) where the downstream end of the reheating circuit (3) connects to the bathtub (2), that is, through the reheating circuit (3). When the water pressure in the bathtub (2) is detected by the water level sensor (32), the circulation pump (P) is driven for 30 seconds (see step (72)).

When the residual water in the bathtub (2) is circulated in the reheating circuit (3) by driving the circulation pump (P) and the temperature becomes a state that can be detected by the reheating temperature sensor (31), It is judged whether the detected temperature of the additional heating temperature sensor (31) is lower than the set temperature of the hot water temperature setting device (62) by 5 degrees or more (refer to the step of drawing mark (73)), and the residual water temperature is set to the set temperature. If it is 5 degrees or more lower, set the contents of the heating temperature memory Y to "2 degrees" (see step (74) of the drawing). In this embodiment, the control device for executing the step of drawing reference numeral (73) for judging whether the detected temperature of the additional heating temperature sensor (31) is lower than the setting of the hot water temperature setting device (62) by 5 degrees or more. The functional part in (5) corresponds to the high temperature signal generator described in the section of technical means. ． Next, the hot water filling valve (42) is opened, and the temperature stored in the heating temperature memory Y is added to the set temperature T of the hot water temperature setting device (62). The combustion amount of the hot water supply burner (45) is controlled so that it is boiled by the heat exchanger (4). That is, while monitoring the output of the hot water supply temperature sensor (41) so that hot water hotter than the set temperature T is boiled in the hot water supply heat exchanger (4), insert it into the gas circuit to the hot water supply burner (45). It controls the opening of the proportional valve (47) (see step (75)). As a result, the filling operation proceeds while supplementing the constant amount of cooled residual water that remains in the bathtub (2) with warm water. ． Next, when the output of the water level sensor (32) is monitored and it is determined that the water level in the bathtub (2) has reached the target water level, the hot water supply burner (45) is extinguished and the water filling valve (42) is turned on. Close to stop the filling operation (see step (76)). ． Next, in order to raise the temperature in the bathtub (2) to the set temperature of the hot water temperature setting device (62), the circulation pump (P) is driven and the reheating burner (15) is set to the combustion state to raise the temperature. When the operation is started and the detected temperature of the additional heating temperature sensor (31) becomes equal to the set temperature of the hot water temperature setting device (62), the heating operation is stopped (see step of reference numeral (77)). ． After that, the water level in the bathtub (2) is monitored by the signal of the water level sensor (32) (refer to the step of drawing code (78)). Perform the water replenishing operation to replenish the hot water of the set temperature of (62) (see step of drawing code (79)). Further, when the temperature in the bathtub (2) detected by the additional heating temperature sensor (31) becomes lower than the set temperature of the hot water temperature setting device (62), the circulation pump (P) is driven and the additional heating burner (15) is turned on. The heat is maintained in the bathtub (2) by burning it (see drawing symbols (80) and (77)).

As described above, according to the above, when cold residual water is present in the bathtub (2), it is filled with hot water while hot water is replenished, and then the bathtub ( 2) Since the inside is heated, the time required is shorter than when using the small capacity heat exchanger for reheating (1) after replenishing the hot water at the set temperature of the hot water temperature setting device (62). Complete.

In the above embodiment, when the step of the reference numeral (71) for determining the presence or absence of residual water in the bath (2) is executed, it is determined that there is no residual water, If the difference between the temperature and the set temperature of the hot water temperature setting device (62) is less than 5 degrees, set the heating temperature memory Y to "0" (see step (69) in the drawing) and then set the heat for hot water supply. The hot water of the set temperature of the hot water temperature setter (62) boiled in the exchanger (4) is poured into the bathtub (2) to fill the water, and then the inside of the bathtub (2) is set to the hot water setter (62). Boil up to the set temperature. [Invention of Claim 2] The invention of Claim 2 is to solve the same problem as the invention of Claim 1.

The invention of claim 2 was devised by utilizing the following relational expression. That is, as shown in FIG. 3, the residual water volume in the bathtub (2) is V2, the depth and water temperature are h2 and t2, the set temperature t is the filling water, and the amount of water in the bathtub after the filling is V, The depth is h, the volume of hot water replenished in the bathtub (2) is V1, the increased water level in the bathtub due to the replenishment of water is h1, the water temperature of the replenishment water is t1, and the cross-sectional area of the bathtub (2) is A. In this case, the total calorific value of the water in all bathtubs after the completion of the hot water filling is the total calorific value of the residual water in the bathtub (2) before the hot water filling and the total calorific value of the hot water to be replenished. Equal to the one added. Therefore, Vt = (V1 × t1) + (V2 × t2) ∴t1 = (Vt− (V2 × t2)) / V1 ...

If the numerator / denominator of the side of the equation is divided by the cross-sectional area A of the bathtub (2), the replenishment water temperature t1 is t1 = (ht− (h2 × t2)) / h1 = (ht− (h2 × t2)) / (h-h2) ... Therefore, when the filling operation is performed under the condition that the cooled residual water is accumulated in the bathtub (2), hot water to be replenished to the bathtub (2) It can be seen that the temperature of 1 may be the temperature t1 given by the equation.

[0018]

[Technical means]

 The technical means of the invention as claimed in claim 2 for solving the above-mentioned problem is, "When residual water is present in the bathtub (2) when the operation switch (6 1) is turned on, a residual water detection signal is outputted. Water temperature determination to determine the water temperature of the device and the detection water temperature of the heating water temperature sensor (31) by driving the circulation pump (P) of the heating water circuit (3) when the residual water detection device outputs the above residual water detection signal A device and a supplementary water temperature calculation device (37) for determining the temperature of hot water to be poured into the bathtub (2) are provided, and the residual water temperature output from the water temperature determination device is t2, and the water level sensor (32 When the water level of residual water detected by) is h2, the target water level for filling water is h, and the set temperature for filling water is t, the replenishment water temperature calculation device (37) calculates the replenishment water temperature t1 = (h × t- The operation obtained is substantially the same as h2 * t2) / (h-h2). The hot water of the replenishment water temperature t1 is supplied from the hot water supply heat exchanger (4) to the bathtub (2) to perform the filling operation up to the target water level. "

[0019]

[Action]

 The above technical means act as follows. If the residual water detector detects residual water in the bathtub (2) when the operation switch (61) is turned on, the circulation pump (P) of the reheating circuit (3) is driven and at the same time. The water temperature determination device outputs the detected temperature of the additional heating temperature sensor (31), that is, the residual water temperature t2.

Then, the residual water temperature t2 output by the water temperature determination device, the residual water level h2 detected by the water level sensor (32), the water filling temperature t of the hot water temperature setting device (62) and the target water level h are compensated for. The replenishment water temperature calculation device (37) calculates the charging water temperature t1 = (h * t-h2 * t2) / (h-h2). Then, the hot water having the replenishment water temperature t1 obtained as a result of the calculation is boiled by the hot water supply heat exchanger (4) and supplied to the bathtub (2), whereby the target is the same as the conventional one. Fill up to the water level h.

Then, as described above, the replenishment water temperature t1 is calculated and determined so as to reach the set temperature when the inside of the bathtub (2) reaches the target water level. When the target water level is reached, the set temperature is reached. In other words, there is no need to heat up the heat exchanger for reheating (1) with a smaller capacity than the heat exchanger for hot water supply (4).

[0022]

【effect】

 The invention of claim 2 has the following unique effect. It is not necessary to heat the inside of the bathtub (2) with the heat exchanger for additional heating (1), which has a smaller capacity than the heat exchanger for hot water supply (4), so the time required to complete the operation is shortened accordingly. it can.

[0023]

【Example】

 Next, an embodiment of the invention of claim 2 will be described. The bath apparatus according to the first embodiment of the invention as claimed in claim 2 is configured similarly to that of FIG. 1 described above, and performs the control operation as shown in FIG. ． When the operation switch (61) is operated, the heat exchanger (4) for hot water supply is burned and the filling valve (42) is opened to perform hot water supply at the set hot water temperature, and then the water level sensor (32) detects it. Judge the water level. Then, until the water level sensor (32) is in the water pressure detection state and it is determined that residual water having a water level higher than the connection port (20) of the bathtub (2) and the reheating circuit (3) accumulates, the above hot water supply is performed. Continue operation (see step (81)). In this embodiment, the functional part of the control device (5) for judging the water level detected by the water level sensor (32) corresponds to the residual water detection device described in the section of technical means. ． Next, the circulation pump (P) is driven for 30 seconds to move the residual water in the bath (2) to the reheating temperature sensor (31) in the reheating circuit (3), and the residual water temperature t2 Is detected by the heating temperature sensor (31) and the water level h2 of the residual water is detected by the water level sensor (32) (see step of drawing code (82)). Further, in this embodiment, the functional unit in the control device (5) for judging the detection temperature of the additional heating temperature sensor (31) after driving the circulation pump (P) for 30 seconds is a section of the above-mentioned technical means. It corresponds to the water temperature determination device described in. ． The residual water temperature t2 detected by the additional heating temperature sensor (31), the residual water level h2 detected by the water level sensor (32), the filling water temperature t of the hot water temperature setting device (62) and the target water level h are compensated. The charge water temperature t1 = (h * t-h2 * t2) / (h-h2) is calculated (see step (83) in the drawing).

The functional unit in the control device (5) for executing the above calculation corresponds to the replenishment water temperature calculation means (37) described in the section of the above-mentioned technical means. ． The water filling valve (42) is opened and the hot water supply burner (45) is burned to boil hot water having the temperature of the replenished water temperature t1 calculated above in the hot water supply heat exchanger (4). That is, the opening of the proportional valve (47) is adjusted so that the temperature detected by the hot water temperature sensor (41) becomes the supplementary water temperature t1 to control the combustion amount of the hot water supply burner (45). When the water level in the bathtub (2) detected by the water level sensor (32) has reached the predetermined target water level, if it reaches the target water level, the water filling valve (42) is closed and hot water is supplied. Keep burner (45) extinguished and stop filling operation (see step (84)).

As a result, the temperature inside the bathtub (2) becomes substantially equal to the set temperature of the hot water temperature setting device (62) at the same time when the hot water supply operation to the bathtub (2) is stopped. ． Next, since the temperature in the bathtub (2) may drop due to natural cooling during the above filling operation, the circulation pump (P) is driven and the reheating burner (15) is set to the combustion state and the bathtub (2) is burned. (2) Boil the inside. Then, when the temperature in the bathtub (2) detected by the additional heating temperature sensor (31) reaches the set temperature of the hot water temperature setting device (62), the heating operation is stopped (refer to the step in the drawing (85)). ). ． After that, it is judged whether the water level in the bathtub (2) detected by the water level sensor (32) is lower than the target water level (see the step in the drawing code (86)), and when it becomes lower than the target water level, the hot water temperature controller (62 ) The hot water of the set temperature is boiled in the hot water heat exchanger (4) to replenish it in the bathtub (2) (see step (87)). Further, it is determined whether the temperature inside the bathtub (2) detected by the additional heating temperature sensor (31) is lower than the set temperature of the hot water temperature setting device (62) (see step of drawing symbol (88)), When the temperature in the bathtub (2) becomes lower than the set temperature, the step of drawing symbol (84) for heating the bathtub (2) is executed. In the above example, the hot water supply operation was performed at the set hot water temperature until it was determined that the residual water remained, but it was higher than the set hot water temperature or the temperature heated by the maximum combustion of the hot water supply burner (45). You may supply hot water at. In this case, the residual water temperature is low, and the replenishment water temperature t1 after the predetermined calculation is too high, and even if the hot water supply burner burns at its maximum capacity, the burner lacks the capacity and the filling speed must be reduced. Is less. In other words, it is less likely that the time to reach the target water level (set temperature) will be long.

The second embodiment shown in FIGS. 4 to 6 is such that the amount of filling can be set / changed. In this type, a flow rate counter (Q) is installed on the upstream side of the hot water supply heat exchanger (4), and the control device (5) has a water filling amount setting device for setting the water filling amount. (65) is connected. Further, the water filling amount setting device (65) is provided with a water amount setting switch (55), and the light emitting position is sequentially arranged from the bottom side along with the number of times the water amount setting switch (55) is turned on. A set water level indicator lamp (56) (56) that moves upward is provided. And, as shown in FIG. 4, the set water level display lamps (56) and (56) respectively correspond to seven levels of water levels H0 to H6 filled with water in the bathtub (2). Further, a trial run switch (66) to be turned on at the time of trial run after installation of the equipment and a water amount regulation switch (67) to be operated at the time of trial run are provided.

In this device, the control operation is executed according to the flowchart shown in FIG. ． When the trial run switch (66) is turned on, the burner (45) for hot water supply is burned, the filling valve (42) is opened, and the amount of water measured by the flow rate counter (Q) is reset to "0". .. Also, the value of the variable (I) is set to "0" (refer to the step of drawing code (90)). ． While actually visually measuring the water level in the bathtub (2), when the water level in the bathtub rises to an arbitrary position H0 above the connection port (20) between the reheating circuit (3) and the bathtub (2), the water volume Press the setting switch (67). Then, it was detected that the water quantity regulating switch (67) was operated (see the step of the drawing code (91)), and at that time, the water quantity measured by the flow counter (Q) (the bath (2) was put into the bath. The amount of warm water) is written in the hot water amount memory Q0 in the microcomputer of the control unit (5), and the detected water level of the water level sensor (32) is written in H0. Then, while increasing the value of the variable (I) by "1" until the variable (I) becomes "6", the measured water amount of the flow rate counter (Q) when the water amount regulation switch (67) is operated is set to QI. At the same time as writing, the work of writing the detected water level of the water level sensor (32) into HI is executed. That is, when the variable (I) is "0", the measured water amount of the flow rate counter (Q) and the measured water level of the water level sensor (32) when the water amount regulating switch (67) is turned on are stored in the water filling amount memories Q0 and H0. When writing each, when the variable (I) is "1", measure the water volume of the flow counter (Q) when the water volume regulation switch (67) is turned on (measured water volume from the start of the trial run) and the water level sensor (3 The measured water level of 2) is written in Q1 and H1, respectively, and the same operation is repeated 7 times, and the initial setting operation of this water level is repeated until the actual water level in the bath (2) becomes H6. Then, when the initial setting operation of the water level is completed and the value of the variable (I) becomes “6”, the step of the drawing code (93) for monitoring the operation of the operation switch (61) from the judgment code of the drawing code (92). The control operation shifts to, which completes the trial run operation. ． When performing the water filling operation, first turn on the water amount setting switch (55) of the water filling amount setting device (65), and the set water level indicator lamp (56) emits light upwards in order from the lowest level according to the number of times the water filling is set. Then the amount of water filling is set. The signal indicating the number of times the water amount setting switch (55) is turned on is applied to the control device (5) from the water filling amount setting device (65) as the value of the variable (I) described later.

When the operation switch (61) is turned on in this state, the value of the variable (I) indicating the amount of water filling set in the amount of water filling setting device (65) is read by the controller (5). See step (94)). ． Next, the hot water supply burner (45) is burned and the hot water filling valve (42) is opened to fill the hot water until the water level sensor (32) detects H0 (see step (95)). Further, the circulating pump (P) is driven for 30 seconds to detect the water temperature t2 of the residual water circulating in the reheating circuit (3) by the reheating temperature sensor (31).

Next, the value q0 (the amount of water stored in the microcomputer of the control device (5) at the time of the test operation described above) in the filling amount memory Q0 corresponding to the above H0, its water temperature t2, and the From the value of the variable (I) indicating the amount of water filling set in the water filling amount setting device (65), the amount of water filling QI corresponding to the variable (I) (in the microcomputer of the control unit (5) at the time of the trial operation described above) The amount of filling water qI stored in the hot water temperature setting device (62) and the set temperature t set in the hot water temperature setting device (62) are used to calculate the replenishment water temperature t1 = (qI * t-q0 * t2) / (qI- q0) is executed (see step of drawing code (97)). ． After that, the hot water supply burner (45) is burned by opening the hot water filling valve (42) and the hot water of the supplementary water temperature t1 is added to the bath (2), and the hot water amount counted by the flow rate counter (Q) is changed. After the filling operation is performed until (qI-q0) is reached, the filling valve (42) is closed and the hot water supply burner (45) is extinguished. Also, when the bathtub (2) is cold, a heating operation is performed to heat it up to the set temperature (see step of drawing code (99)), and when the water level in the bathtub (2) drops, A water refilling operation for replenishing an appropriate amount of hot water in the bathtub (2) is executed (see steps of reference numerals (100) and (101) in the drawing).

In the above example, the case where residual water having a water level of H0 or less is present has been described. However, when residual water of an amount exceeding H0 is present, it is specified first among the water levels of H1 to H6. When the water level Hj is detected, from the water amount qj in the water filling amount memory Qj corresponding to the water level Hj, the water temperature t2, and the water filling amount qI, t1 = (qI * t-qj * t2) / After the calculation of (qI-qj), the filling is performed in the same manner as above.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a water circuit of a bath device.

FIG. 2 is an explanatory diagram of an embodiment of the invention of claim 1;

FIG. 3 is an explanatory view of a first embodiment of the invention of claim 2;

FIG. 4 is an explanatory view showing a water circuit and the like of a bath apparatus according to a second embodiment of the invention of claim 2;

5 is an enlarged view of a filling amount setting device (65) used in a second embodiment of the invention of claim 2. FIG.

FIG. 6 is a flowchart showing the control operation of the second embodiment of the invention of claim 2;

FIG. 7 is an explanatory diagram of a conventional example.

[Explanation of sign]

 (1) ・ ・ Additional heat exchanger (2) ・ ・ ・ Bathtub (3) ・ ・ ・ Additional heating circuit (4) ・ ・ ・ Hot water heat exchanger (31) ・ ・ ・ Additional temperature sensor (32 ) ・ ・ ・ Water level sensor (40) ・ ・ ・ Hot water supply circuit

Claims (2)

[Scope of utility model registration request] 1. A circulation pump (P) and a reheating temperature sensor (31) inserted in a reheating circuit (3) circulating between a heat exchanger for reheating (1) and a bath (2), A heat exchanger for hot water supply (4), which has a larger capacity than the heat exchanger for reheating (1) and heats and produces hot water for filling the bathtub (2), and a water level for detecting the water level in the bathtub (2) When it is judged that the bath (2) is filled with water to the target water level by the output of the water level sensor (32), the reheating burner (15) and the circulation pump (P) are used for the bath.
In a bath device in which the inside of (2) is heated to a set temperature, a residual water detection device that outputs a residual water detection signal when residual water is present in the bathtub (2) when the operation switch (61) is turned on, When the residual water detection device outputs the residual water detection signal, the circulating pump (P) is driven, and the detected water temperature of the additional heating temperature sensor (31) and the set temperature of the hot water temperature setting device (62) after the driving. When the latter set temperature is higher than the detected temperature of the former by a predetermined temperature, a high temperature signal generator that outputs a high temperature signal is provided.
When the high-temperature signal generator outputs a high-temperature signal, hot water slightly hotter than the set temperature of the hot water temperature setting device (62) is boiled in the hot water heat exchanger (4) and put into the bathtub (2). Bath equipment. 2. A circulation pump (P) and a reheating temperature sensor (31) inserted in a reheating circuit (3) circulating between the reheating heat exchanger (1) and the bathtub (2); A heat exchanger for hot water supply (4), which has a larger capacity than the heat exchanger for reheating (1) and heats and produces hot water for filling the bathtub (2), and a water level for detecting the water level in the bathtub (2) In a bath device equipped with a sensor (32), when residual water exists in the bathtub (2) when the operation switch (61) is turned on, a residual water detection device that outputs a residual water detection signal and the residual water detection device are When the residual water detection signal is output, the circulation pump (P) of the reheating circuit (3) is driven to reheat the temperature sensor (31).
A water temperature determination device for determining the detected water temperature and a supplementary water temperature calculation device (37) for determining the temperature of the hot water to be poured into the bathtub (2) are provided, and the residual water temperature output by the water temperature determination device is t2, When the water level of the residual water detected by the water level sensor (32) before the tensioning operation is h2, the target water level of the water filling is h, and the water filling setting temperature is t, the replenishment water temperature calculating device (37) is used to supply the replenishment water temperature. t1 = (h * t-h2 * t2) / (h-
h2) and the hot water having the above-mentioned supplementary water temperature t1 obtained as a result of the calculation is supplied from the hot water supply heat exchanger (4) to the bathtub (2) to perform the water filling operation up to the target water level. Bath equipment that is designed to do.