JP2012037142A - Hot water filling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot water filling device capable of bringing a hot water temperature in a bathtub at the time of finishing hot water supply close to a hot water filling temperature set by the user even when an outside air temperature at the time of performing hot water filling is different from the outside air temperature of the last hot water filling.SOLUTION: The hot water filling device 10 specifies an outside air correction temperature based on the outside air temperature at the time of performing a hot water filling treatment (S10). Moreover, water supply is started at a hot water supply starting temperature obtained by adding the outside air correction temperature and the last temperature difference read out from the memory to the setting temperature set by the user (S12-S16). When hot water is supplied to a half of a setting hot water amount at the hot water supply starting temperature, a hot water temperature in the bathtub is measured, a hot water temperature correction temperature is specified based on the hot water temperature, hot water supply is re-started at a hot water supply re-starting temperature obtained by adding the hot water temperature correction temperature to the hot water supply starting temperature, and the hot water supply is performed to a remaining half to the setting hot water amount (S20-S26).

Description

  The present invention relates to a hot water filling apparatus.

  Patent Document 1 discloses an example of a hot water filling device for hot water filling a bathtub. The hot water filling device of Patent Literature 1 calculates and stores the difference between the hot water temperature set by the user and the actual hot water temperature in the bathtub when the hot water supply to the bathtub is completed, and the next hot water filling is performed. Sometimes, hot water is supplied at a temperature obtained by adding the calculated difference to the hot water temperature set by the user.

Japanese Patent Laid-Open No. 4-169749

  While the hot water is supplied to the bathtub, the temperature of the hot water already supplied into the bathtub is lowered by heat dissipation. The amount of heat released from the hot water in the bathtub varies depending on the outside air temperature. Therefore, in the hot water filling device of Patent Document 1, when the outside air temperature changes significantly from the previous hot water filling, the hot water supply is performed at a temperature obtained by adding the difference calculated at the previous hot water filling to the hot water temperature set by the user. Even so, due to a change in the amount of heat release accompanying a change in the outside air temperature, there may occur a situation in which the hot water temperature in the bathtub at the completion of hot water supply is significantly different from the hot water temperature set by the user.

  In the present specification, even when the outside temperature at the time of filling is different from the outside temperature at the time of last filling, the temperature in the bathtub at the time of hot water supply completion can be close to the filling temperature set by the user. A technique for realizing a hot water filling apparatus is disclosed.

In this specification, the hot water filling apparatus which performs hot water filling to a bathtub is disclosed. The hot water filling device includes hot water supply means for supplying hot water to a bathtub, setting means for allowing a user to set the hot water temperature, first measurement means for measuring at least one of an outside air temperature and a water temperature of tap water, and a control means. Prepare. The control means specifies the first correction value based on the temperature measured by the first measurement means. The hot water supply means starts hot water supply at the first hot water supply temperature specified based on the hot water temperature set by the setting means and the first correction value specified by the control means.

  According to the hot water filling apparatus, the control means specifies the first correction value based on at least one of the outside air temperature and the tap water temperature at the time of hot water filling, and the hot water supply means is set by the setting means. Hot water supply is started at the first hot water supply temperature specified based on the hot water filling temperature and the first correction value specified by the control means. Here, the “first correction value” includes, for example, a correction temperature for adding to the set hot water temperature, a correction coefficient for multiplying the set hot water temperature, and the like. The water temperature of the tap water changes with the outside air temperature. That is, the first hot water supply temperature at which the hot water supply means starts hot water supply is a temperature specified based on the outside air temperature at the time of hot water filling. Therefore, according to the above hot water filling device, even if the outside air temperature at the time of hot water filling is different from the outside air temperature at the previous hot water filling time, the hot water temperature set in the bathtub after the hot water supply is completed is set by the user. Can approach tension temperature.

  The hot water filling device further includes second measuring means for measuring the temperature of the hot water supplied to the bathtub, and the control means measures the second measuring means while the hot water supplying means supplies hot water at the first hot water supply temperature. The second correction value is specified based on the measured temperature, and the hot water supply means continues hot water supply at the second hot water supply temperature specified based on the first hot water supply temperature and the second correction value specified by the control means. Good. The “second correction value” here includes, for example, a correction temperature for adding to the first hot water supply temperature, a correction coefficient for multiplying the first hot water supply temperature, and the like. According to this configuration, the hot water supply means continues the hot water supply at the second hot water temperature specified based on the second correction value specified based on the temperature of the hot water actually supplied to the bathtub and the first hot water temperature. To do. Since the hot water supply temperature can be corrected during the hot water supply, the hot water temperature in the bathtub when the hot water supply is completed can be made closer to the hot water temperature set by the user.

  The control means specifies the difference between the temperature of the hot water in the bathtub at the completion of hot water supply and the hot water temperature set by the setting means, and at the next hot water supply, the specified difference and the temperature measured by the first measurement means are set. Based on this, the first correction value may be specified. According to this configuration, the control means can specify the first correction value reflecting the result of the previous hot water supply. The hot water temperature in the bathtub when the hot water supply is completed can be made closer to the hot water temperature set by the user.

The block diagram which shows the structure of the hot water filling apparatus of 1st Example. The figure which shows the specific table for specifying external air correction temperature from external temperature. The figure which shows the temperature table for demonstrating each temperature used by 1st Example. The flowchart which shows a hot water filling process.

The main features of the embodiments described below are listed.
(Mode 1) The hot water supply means includes a hot water burner, a flow rate sensor, and a hot water supply thermistor.
(Mode 2) The circulation path includes a circulation pump, a circulation thermistor, and a reheating burner.
(Mode 3) When hot water supply is completed, when hot water having a temperature equal to or higher than the hot water temperature set by the user is supplied into the bathtub, the hot water filling device omits the chasing operation.

(First embodiment)
Embodiments will be described with reference to the drawings. 1 includes a hot water supply path 12 for supplying hot water to the bathtub 100, a circulation path 14 for circulating hot water in the bathtub 100, an outside temperature thermistor 40, a remote controller 50, and a control device 60. . The hot water supply path 12 heats the tap water supplied from the water supply to the set temperature by the hot water supply burner 22 and supplies the hot water to the bathtub 100. In the hot water supply path 12, the flow rate of water supplied from the water supply to the hot water supply burner 22, that is, the flow rate sensor 24 that measures the flow rate of hot water heated by the hot water supply burner 22 and supplied to the bathtub 100, and heated by the hot water supply burner 22. A hot water supply thermistor 26 that measures the temperature of the hot water supplied to the bathtub 100 is provided. In FIG. 1, the water supply thermistor 20 is indicated by a broken line in the hot water supply path 12, but this water supply thermistor 20 is used in a second embodiment described later.

  One end of the circulation path 14 communicates with a suction port 14 a provided near the bottom of the bathtub 100. The other end of the circulation path 14 communicates with a discharge port 14 b provided near the bottom of the bathtub 100. In the circulation path 14, the hot water in the bathtub 100 is sucked out from the suction port 14a, passed through the circulation path 14, and returned from the discharge port 14b into the bathtub 100, and hot water flowing into the circulation path 14 from the bathtub 100. A circulation thermistor 34 for measuring the temperature of the water and a reheating burner 32 for heating the hot water flowing through the circulation path 14 are provided. Note that the downstream end of the hot water supply path 12 is in communication with the downstream side of the circulation path 14. Accordingly, the hot water that has passed through the hot water supply path 12 flows into the downstream side of the circulation path 14 and is supplied into the bathtub 100 from the discharge port 14b.

  The outside temperature thermistor 40 is a thermistor that measures outside temperature. The outside air temperature thermistor 40 is provided at a position away from the hot water supply path 12 and the circulation path 14.

  The remote controller 50 includes an input unit 52 and a display unit 54. The user can input the set temperature of the hot water filling to the bathtub 100, the set hot water amount of the hot water filling to the bathtub 100, etc. by operating the input unit 52. Further, the input unit 52 includes a hot water start button for starting automatic hot water filling. The display unit 54 displays a set temperature and a set amount of hot water for filling the bathtub 100.

  The control device 60 is a general microcomputer including a CPU, a memory, and input / output. The control device 60 is connected to control lines of the hot water supply burner 22, the flow rate sensor 24, the hot water supply thermistor 26, the circulation pump 30, the reheating burner 32, the circulation thermistor 34, the outside temperature thermistor 40, and the remote controller 50. The control device 60 controls the operation of each connected device.

  The control device 60 stores a specific table 110 shown in FIG. 2 is a table for the control device 60 to specify the outside air correction temperature C from the outside air temperature A measured by the outside air temperature thermistor 40. The outside air correction temperature C will be described in detail later. In the specific table 110, a range of a plurality of outside air temperatures A and a plurality of outside air correction temperatures C are associated with each other. For example, when the outside air temperature A is 16 ° C., the outside air correction temperature C is + 0.7 ° C.

  The temperatures A to F used when the filling process is performed by the filling apparatus 10 of the present embodiment will be described with reference to the temperature table 120 of FIG. The temperature table 120 of FIG. 3 shows a calculation method or a measurement method of each temperature represented by alphabets A to F. The outside air temperature A is an outside air temperature measured by the outside air temperature thermistor 40. The set temperature B1 is a set temperature of the hot water set by the user operating the remote controller 50. The hot water filling device 10 operates so that the temperature of the hot water in the bathtub 100 becomes the set temperature B1 when the hot water filling process is completed. The hot water supply start temperature B2 indicates the hot water supply temperature at the start of hot water supply (see S16 in FIG. 4). The hot water supply start temperature B2 is a temperature obtained by adding the hot water supply correction temperature C (described later) and the differential temperature F (described later) calculated at the previous hot water filling to the set temperature B1. The hot water supply restart temperature B3 indicates the hot water supply temperature when hot water supply is restarted (see S26 in FIG. 4). The hot water supply restart temperature B3 is a temperature obtained by adding a hot water temperature correction temperature D (described later) to the hot water supply start temperature B2. The outside air correction temperature C is a temperature specified based on the outside air temperature A in accordance with the specifying table 110 in FIG. The outside air correction temperature C is used to calculate the hot water supply start temperature B2. The hot water temperature correction temperature D is a difference between the set temperature B1 and the hot water temperature E1 (described later). The hot water temperature correction temperature D is used to calculate the hot water supply restart temperature B3. The hot water temperature E1 is the hot water temperature in the bathtub 100 when hot water supply is stopped (see S20 in FIG. 4). The hot water temperature E1 is measured by measuring the temperature of hot water flowing into the circulation path 14 from the bathtub 100 with the circulation thermistor 34. As described above, the hot water temperature E1 is used to calculate the hot water temperature correction temperature D. The hot water temperature E2 is the hot water temperature in the bathtub 100 when hot water supply is completed (see S30 in FIG. 4). The hot water temperature E <b> 2 is also measured by measuring the temperature of the hot water flowing into the circulation path 14 from the bathtub 100 with the circulation thermistor 34. The hot water temperature E2 is used to calculate a differential temperature F described later. The difference temperature F is a difference between the set temperature B1 and the hot water temperature E2. The difference temperature F is used to calculate the hot water supply start temperature B2 at the next hot water filling.

(Water filling treatment)
The hot water filling process executed by the hot water filling apparatus 10 of the present embodiment will be described with reference to FIG. When causing the hot water filling device 10 to execute the hot water filling process, first, the user can operate the remote controller 50 to set the hot water filling set temperature B1 and the set hot water amount. The user can set the set temperature B1 to 40 ° C., for example. Further, the user can execute a hot water filling start operation by operating the hot water filling start button of the remote controller 50 after setting the set temperature B1 and the set hot water amount.

  When the hot water filling start operation is executed, the control device 60 specifies the outside air correction temperature C (S10). Specifically, the control device 60 specifies the outside air correction temperature C using the specifying table 110 in FIG. 2 based on the outside air temperature A measured by the outside air temperature thermistor 40. For example, when the outside air temperature A is 16 ° C., the control device 60 specifies the outside air temperature correction temperature C as + 0.7 ° C.

  Next, the control device 60 reads the difference temperature F stored in the previous hot water filling process from the memory (S12). For example, if + 0.1 ° C. is stored as the differential temperature F in the memory, the control device 60 reads + 0.1 ° C. Note that when the differential temperature F is not stored in the memory as in the case of the first hot water filling process, the control device 60 does not read the differential temperature F.

  Next, the controller 60 adds the outside air temperature correction temperature C specified in S10 and the differential temperature F read in S12 to the set temperature B1, and specifies the hot water supply start temperature B2 (S14). In the above example, the hot water supply start temperature B2 is B1 + C + F = 40 ° C. + 0.7 ° C. + 0.1 ° C. = 40.8 ° C.

  Next, the control device 60 starts hot water supply at the hot water supply start temperature B2 specified in S14 (S16). That is, in the hot water supply path 12, the tap water is heated by the hot water supply burner 22 and supplied as hot water at the hot water supply start temperature B2 into the bathtub 100 from the discharge port 14b. At this time, according to the temperature measured by hot water supply thermistor 26, control device 60 adjusts the heating amount of hot water supply burner 22 so that the temperature of hot water supplied to bathtub 100 becomes hot water supply start temperature B2. Moreover, the control apparatus 60 counts the integrated amount of the hot water supplied in the bathtub 100 after starting hot water supply based on the flow volume which the flow sensor 24 measures.

  Control device 60 continues to supply hot water until the integrated amount of hot water supplied into bathtub 100 reaches ½ of the set hot water amount (S18). When the integrated amount of hot water supplied into bathtub 100 reaches 1/2 of the set hot water amount (S18: YES), control device 60 stops hot water supply at hot water supply start temperature B2 (S20).

  Next, the control device 60 operates the circulation pump 30, and measures the hot water temperature E1 of the hot water supplied into the bathtub 100 using the circulation thermistor 34 (S22). Specifically, when the circulation pump 30 is operated, hot water in the bathtub 100 is sucked out from the suction port 14a, passes through the circulation path 14, and is returned from the discharge port 14b into the bathtub 100. The circulation thermistor 34 measures the temperature of the hot water (hot water temperature E1) flowing into the circulation path 14 from the bathtub 100. Next, the control device 60 specifies the hot water supply restart temperature B3 (S24). Specifically, first, the control device 60 calculates a difference between the set temperature B1 and the hot water temperature E1 measured at S22 to calculate the hot water temperature correction temperature D. In the above example, for example, when the hot water temperature E1 is 39 ° C., the hot water temperature correction temperature D is B1−E1 = 40 ° C.−39 ° C. = 1 ° C. Next, control device 60 adds hot water temperature correction temperature D to hot water supply start temperature B2, and specifies hot water supply restart temperature B3. In the above example, the hot water supply restart temperature B3 is B2 + D = 40.8 ° C. + 1 ° C. = 41.8 ° C.

  Next, the control device 60 restarts hot water supply at the hot water supply restart temperature B3 specified in S24 (S26). In accordance with the temperature measured by hot water supply thermistor 26, control device 60 adjusts the heating amount of hot water supply burner 22 so that the temperature of hot water supplied to bathtub 100 becomes hot water supply restart temperature B3. Further, the control device 60 continues counting the accumulated amount of hot water supplied into the bathtub 100 after starting hot water supply based on the flow rate measured by the flow sensor 24.

  Next, the control device 60 continues to supply hot water until the accumulated amount of hot water supplied into the bathtub 100 reaches the set hot water amount (S28). When the integrated amount of hot water supplied into bathtub 100 reaches the set hot water amount (S28: YES), control device 60 stops hot water supply at hot water supply restart temperature B3. Thereby, hot water supply is completed (S30).

  Next, the control device 60 operates the circulation pump 30 and measures the hot water temperature E2 of the hot water supplied into the bathtub 100 using the circulation thermistor 34 (S32). The method for measuring the hot water temperature E2 is the same as the method for measuring the hot water temperature E1 in S22 described above. Next, the control device 60 specifies a new differential temperature F and stores it in the memory (S34). Specifically, the control device 60 calculates the difference between the set temperature B1 and the hot water temperature E2 measured in S32 and identifies the difference temperature F. In the above example, when the hot water temperature E2 is 39.8 ° C., the differential temperature F is B1−E2 = 40 ° C.−39.8 ° C. = 0.2 ° C. Furthermore, the control device 60 stores the specified differential temperature F in the memory. When the differential temperature F is already stored in the memory, the control device 60 overwrites the differential temperature F stored in the memory with the newly specified differential temperature F. As described above, the difference temperature F stored in S34 is used when specifying the hot water supply start temperature B2 in the next hot water filling process.

  Next, the control device 60 operates the circulation pump 30 and the reheating burner 32, and performs reheating operation until the hot water temperature in the bathtub 100 reaches the set temperature B1 (S36). By the operation of the circulation pump 30, hot water in the bathtub 100 is sucked out from the suction port 14a, passes through the circulation path 14, and is returned from the discharge port 14b into the bathtub 100. The reheating burner 32 heats the hot water flowing in the circulation path 14. The hot water heated by the reheating burner 32 is returned into the bathtub 100 from the discharge port 14b. In addition, when the difference temperature F specified by S34 is 0 degrees C or less, the hot water of the temperature more than preset temperature B1 has already been supplied in the bathtub 100. FIG. In that case, the control device 60 does not perform the follow-up operation of S36, and proceeds to S38.

  When the temperature measured by the circulation thermistor 34 becomes the set temperature B1 as a result of the reheating in S36, and the hot water in the bathtub 100 becomes the set temperature B1, the control device 60 stops the circulation pump 30 and the reheating burner 32, Hot water filling is completed (S38). Thereby, the hot water filling process is completed.

  The hot water filling device 10 of the present embodiment has been described above. As shown in S10 of FIG. 4, the hot water filling device 10 of the present embodiment specifies the outdoor air correction temperature C based on the outdoor air temperature A at the time when the hot water filling process is performed. Further, as shown in S12 to S16 of FIG. 4, hot water supply is performed at a hot water supply start temperature B2 obtained by adding the above-described outside air correction temperature C and the previous differential temperature F read from the memory to the set temperature B1 set by the user. To start. That is, the hot water supply start temperature B2 of the present embodiment is a hot water supply temperature based on the outside air temperature A at the time of hot water filling. Therefore, according to the hot water filling device 10 of the present embodiment, even when the outside air temperature A at the time of hot water filling is different from the outside air temperature at the time of the previous hot water filling, the hot water temperature E2 in the bathtub 100 after the hot water supply is completed. Can be brought close to the set temperature B1. As a result, it is possible to shorten the time for the reheating operation performed in S36 of FIG. By shortening the time for chasing operation, the time from the start to the completion of filling is also shortened. Furthermore, the hot water filling device 10 of the present embodiment adds the differential temperature F derived from the previous hot water supply result to specify the hot water supply start temperature B2, so that hot water reflecting the result of the previous hot water supply can be performed. It becomes easier to bring the hot water temperature E2 in the bathtub 100 after hot water supply is closer to the set temperature B1.

  As shown in S20 to S26 of FIG. 4, the hot water filling device 10 of the present embodiment has a hot water temperature E1 in the bathtub 100 by the circulation thermistor 34 when hot water supply is performed to half the set hot water amount at the hot water supply start temperature B2. And the hot water temperature correction temperature D is specified based on the hot water temperature E1. Furthermore, the hot water filling device 10 specifies the hot water supply restart temperature B3 obtained by adding the hot water temperature correction temperature D to the hot water supply start temperature B2, restarts hot water supply at the hot water supply restart temperature B3, and supplies the remaining half of the hot water up to the set hot water amount. . Since the hot water temperature can be corrected during the hot water supply, the hot water temperature E2 in the bathtub 100 when the hot water supply is completed can be made closer to the set temperature B1.

  Further, in the hot water filling device 10 of the present embodiment, the circulation path 14 includes a circulation pump 30 and a circulation thermistor 34. The circulation thermistor 34 measures the temperature of the hot water supplied to the bathtub 100 by measuring the temperature of the hot water flowing through the circulation path 14 when the circulation pump 30 is driven. Therefore, by operating the circulation pump 30, the hot water supplied into the bathtub 100 can be agitated, and the temperature variation of the hot water depending on the location in the bathtub 100 can be reduced. Therefore, the circulation thermistor 34 can accurately measure the temperature of hot water in the bathtub 100. As a result, the hot water temperature correction temperature D is calculated more accurately.

  The correspondence between the configuration of the first embodiment and the configuration of the present invention will be described. The hot water supply path 12, the remote controller 50, and the control device 60 are examples of "hot water supply means", "setting means", and "control means", respectively. The outside air temperature thermistor 40 and the circulation thermistor 34 are examples of “first measurement means” and “second measurement means”, respectively. The outside air temperature A, the set temperature B1, the outside air correction temperature C, and the hot water supply start temperature B2 are respectively “temperature measured by the first measuring means”, “hot water temperature”, “first correction value”, and “first hot water temperature”. It is an example. The hot water temperature E1, the hot water temperature correction temperature D, and the hot water supply resumption temperature B3 are examples of “temperature measured by the second measuring means”, “second correction value”, and “second hot water supply temperature”, respectively. The hot water temperature E2 and the differential temperature F are examples of “the temperature of hot water in the bathtub when hot water supply is completed” and “specified difference”, respectively. The sum of the outside air correction temperature C and the difference temperature F is another example of the “first correction value”.

(Second embodiment)
The second embodiment will be described focusing on the differences from the first embodiment. In this embodiment, a water supply thermistor 20 indicated by a broken line in FIG. 1 is provided instead of the outside air temperature thermistor 40, and the water temperature A ′ of the tap water is measured instead of the outside air temperature A. In this embodiment, instead of the outside air correction temperature C, the water temperature correction temperature C ′ may be specified based on the measured water temperature A ′ of tap water. In this case, the control device 60 stores a specific table in which the water temperature A ′ of the tap water is associated with the water temperature correction temperature C ′ in place of the specific table 110 shown in FIG.

  According to this configuration, the water temperature correction temperature C ′ is specified based on the water temperature A ′ of the tap water at the time when the hot water filling process is performed, and the above-described water temperature correction temperature C ′ and the memory are set to the set temperature B1 set by the user. Hot water supply is started at a hot water supply start temperature B2 ′ to which the previously read differential temperature F is added. The tap water temperature A ′ varies with the outside air temperature. Therefore, the hot water filling device 10 of the present embodiment can estimate the outside air temperature from the water temperature A ′ of tap water measured by the water supply thermistor 20. That is, the hot water supply start temperature B2 ′ of the present embodiment is also a hot water supply temperature specified based on the outside air temperature at the time of hot water filling. Therefore, in the hot water filling device 10 of this embodiment that does not include the external temperature thermistor 40, as in the case of the first embodiment, the external temperature at the time of hot water filling is different from the external temperature at the previous hot water filling time. Even so, the hot water temperature E2 in the bathtub 100 after the completion of hot water supply can be brought close to the set temperature B1. As a result, it is possible to shorten the time for the reheating operation performed in S36 of FIG. In addition, the water supply thermistor 20 of a present Example is also an example of the "1st measurement means" of this invention.

(Modification)
(1) In the first embodiment, the control device 60 specifies the outside air correction temperature C corresponding to the outside air temperature A using the specifying table 110 of FIG. Instead, the control device 60 stores a predetermined function for specifying an appropriate outside air temperature correction temperature C, and calculates an appropriate outside air temperature correction temperature C from the outside air temperature A using the function. You may make it do.

  (2) In each of the embodiments described above, when the hot water filling device 10 supplies hot water to half of the set hot water amount at the hot water supply start temperature B2, the hot water supply is temporarily stopped, the hot water supply restart temperature B3 is specified, and the hot water supply is resumed. Hot water supply is resumed at temperature B3. However, the hot water filling device 10 may supply all the set amount of hot water at the hot water supply start temperature B2 without stopping hot water supply in the middle.

  (3) In each of the above embodiments, the hot water filling device 10 stops hot water supply once when hot water supply is performed up to half of the set amount of hot water at the hot water supply start temperature B2, but the amount of hot water supply stopped is the set hot water amount. The amount of hot water that can be circulated at least in the circulation path 14 is not limited to half, and can be set to an arbitrary amount.

  (4) In each of the embodiments described above, the hot water filling device 10 performs the reheating operation until the hot water temperature in the bathtub 100 reaches the set temperature B1 after the hot water supply is completed. Driving may be omitted. In that case, the hot water filling device 10 performs hot water supply so that hot water having a temperature equal to or higher than the set temperature B1 is supplied into the bathtub 100 when hot water supply is completed.

  (5) In each of the above embodiments, the hot water supply start temperature B2 is described as the temperature obtained by adding the outside air correction temperature C and the previous differential temperature F read from the memory to the set temperature B1 set by the user. However, the hot water supply start temperature may be a value obtained by adding only the outside air correction temperature C to the set temperature B1 set by the user without adding the previous difference temperature F.

  (6) In each of the above embodiments, the control device 60 specifies the outside air correction temperature C based on the outside air temperature A measured by the outside air temperature thermistor 40, and sets the outside air correction temperature to the set temperature B1 set by the user. The hot water supply start temperature B2 is specified by adding C and the difference temperature F. However, instead of this, the control device 60 may specify the outside air correction coefficient based on the outside air temperature A measured by the outside air temperature thermistor 40. Further, the control device 60 may specify the difference correction coefficient instead of the difference temperature F. In that case, the control device 60 may set the temperature obtained by multiplying the set temperature B1 set by the user by the outside air correction coefficient and the difference correction coefficient as the hot water supply start temperature B2. The outside air correction coefficient in this modification is also an example of the “first correction value” in the present invention. The product of the outside air correction coefficient and the difference correction coefficient is another example of the “first correction value”.

  (7) Further, in each of the above embodiments, when the hot water is supplied to half of the set amount of hot water, the control device 60 specifies the hot water temperature correction temperature D based on the hot water temperature E1 in the bathtub 100 and starts hot water supply. The hot water supply restart temperature B3 obtained by adding the hot water temperature correction temperature D to the temperature B2 is specified. However, the control device may specify the hot water temperature correction coefficient based on the hot water temperature E1 in the bathtub 100. In that case, the control device 60 may set the temperature obtained by multiplying the hot water supply start temperature B2 by the hot water temperature correction coefficient as the hot water supply restart temperature B3. The hot water temperature correction coefficient in this modification is also an example of the “second correction value” in the present invention.

  (8) In each of the above embodiments, the control device 60 specifies the outside air correction temperature C based on the outside air temperature A measured by the outside air temperature thermistor 40. Instead, the control device 60 The outside air correction temperature C may be specified based on the outside air temperature A and the set temperature B1 set by the user. With the configuration of the present modification, the control device 60 can specify the optimum outside air correction temperature C even when there is a difference in the amount of heat released from the hot water supply path 12 and the bathtub 100 for each set temperature set by the user. .

  Specific examples of the present invention have been described in detail above, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above. In addition, the technical elements described in the present specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology exemplified in this specification or the drawings achieves a plurality of objects at the same time, and has technical utility by achieving one of the objects.

  10: Hot water filling device, 12: Hot water supply means, 14: Circulation means, 14a: Suction port, 14b: Discharge port, 20: Water supply thermistor, 22: Hot water supply burner, 24: Flow rate sensor, 26: Hot water supply thermistor, 30: Circulation pump 32: Reheating burner, 34: Circulating thermistor, 40: Outside temperature thermistor, 50: Remote control, 60: Control device, 100: Bathtub

Claims (3)

A hot water filling device for hot water filling a bathtub,
Hot water supply means for hot water supply to the bathtub,
Setting means for allowing the user to set the filling temperature;
First measuring means for measuring at least one of the outside air temperature and the temperature of tap water;
With control means,
The control means specifies a first correction value based on the temperature measured by the first measurement means,
The hot water supply means starts hot water supply at a first hot water supply temperature specified based on a hot water temperature set by the setting means and a first correction value specified by the control means. apparatus. A second measuring means for measuring the temperature of the hot water supplied to the bathtub;
The control means specifies a second correction value based on the temperature measured by the second measurement means while the hot water supply means performs hot water supply at the first hot water supply temperature,
2. The hot water filling according to claim 1, wherein the hot water supply means continues hot water supply at a second hot water supply temperature specified based on the first hot water supply temperature and a second correction temperature specified by the control means. apparatus. The control means specifies the difference between the temperature of hot water in the bathtub when hot water supply is completed and the hot water temperature set by the setting means,
The hot water filling apparatus according to claim 2, wherein the first correction value is specified based on the specified difference and the temperature measured by the first measuring means at the next hot water supply.

Images