JP2018048795A - Storage water heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that although a user is alerted to a risk of heat shock, there is no specific means to avoid heat shock.SOLUTION: A bath water heater for performing a hot water filling operation in a bathtub includes a notification section for making notification to urge that a cover of the bathtub be opened when an outside air temperature or a bathroom temperature is low at start of a normal hot water filling operation. This configuration ensures that a user is notified of a risk of heat shock when a temperature in the bathroom is low, and when the user opens the cover of the bathtub, a temperature in the bathroom is raised by steam generated by supply of hot water into the bath, so that heat shock can be prevented.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a hot water storage type hot water supply machine that fills a bathtub.

  Conventionally, this type of hot water storage type water heater warms the water supplied from the water supply by heating means, stores the hot water in a hot water storage tank, etc., and fills the bath with hot water from the hot water storage tank. It was.

  Also, in the cold winter season, the bath is cold even if the bath water is warmed, and it has a function to prevent or suppress accidents caused by heat shock caused by moving from a room heated by a heater to a cold place in the bathroom. There were known hot water storage water heaters.

  For example, if the temperature difference detected by the temperature sensor provided on the remote controller provided in the bathroom and the remote controller provided outside the bathroom is larger than a predetermined temperature difference, the user is warned that there is a risk of heat shock. There was a thing (patent document 1).

JP2011-247551A

  However, the thing like patent document 1 does not show the specific means to avoid a heat shock only by calling attention and urging the user to pay attention.

  In order to solve the above-described problems, the present invention provides a notification for prompting the user to open the lid of the bathtub when the outside air temperature or the bathroom temperature is low at the start of the normal filling operation in the bath water heater that performs the filling operation to the bathtub. An informing unit is provided.

  In addition, the control device for the bath water heater includes heating for controlling the hot water filling operation and switching the normal hot water filling operation to the heating hot water filling operation when the outside air temperature or the bathroom temperature is low at the start of the normal hot water filling operation. A hot water filling operation control means is provided, and the notifying unit issues a notification prompting the user to open the lid of the bathtub at the start of the heating hot water filling operation, and the heating hot water filling operation control means optionally sets the hot water filling temperature. When the supply of hot water is started at a predetermined heating temperature higher than the bath setting temperature determined in Step 1, and the first predetermined amount of hot water is supplied, the heating hot water filling operation control means is set to an arbitrarily determined bath setting. Adjust the hot water temperature so that the hot water in the bathtub reaches the bath set temperature when the amount or bath set water level is reached, and continue to supply, and when the bath set amount or the bath set water level is reached, supply is stopped and heating is performed. Yubari And so as to terminate the operation.

  In addition, the control device for the bath water heater includes heating for controlling the hot water filling operation and switching the normal hot water filling operation to the heating hot water filling operation when the outside air temperature or the bathroom temperature is low at the start of the normal hot water filling operation. A hot water filling operation control means is provided, and the notifying unit issues a notification prompting the user to open the lid of the bathtub at the start of the heating hot water filling operation. The hot water supply operation is started at a predetermined heating temperature higher than the bath set temperature determined in step S2, and when the second predetermined amount is reached, the heating hot water filling operation control means The hot water filling temperature is kept at a predetermined adjustment temperature lower than the bath setting temperature arbitrarily determined so that the hot water of the bath reaches the bath setting temperature, and then the hot water filling temperature is reached when the third predetermined amount is reached. The bath set temperature To continue the supply, when reaching the bath set amount or bath set water level, and so as to terminate the heating water filling operation by stopping the supply.

  In addition, the heating hot water operation control means confirms whether the temperature rise of the bathroom due to the hot water hot water operation is equal to or higher than a predetermined rising temperature. Announcement of warning that there is a danger of.

  Thus, according to the invention of claim 1, when the outside air temperature or the bathroom temperature is lower than the predetermined temperature, the steam generated when the hot water is supplied into the bath is notified by opening the lid of the bath. The temperature in the bathroom is raised to prevent heat shock, and if the outside air temperature or bathroom temperature is lower than the predetermined temperature, there is no danger of heat shock, so no notification is given, so it is possible to prevent heat shock with ease of use it can.

  According to the invention of claim 2, since the heating hot water filling operation is first filled with hot water having a temperature higher than the bath setting temperature, hot hot water flows into the cold bath bottom and a large amount of steam is generated. After the bath temperature and humidity are raised and the first predetermined amount of hot water is supplied, the bath temperature is set to the bath set temperature when the bath set temperature and the bath set amount are filled. As the temperature of the hot water mixing valve is adjusted and the supply to the bathtub is continued, the user can complete the desired hot water filling, and the temperature in the bathroom is raised, resulting in temperature fluctuations during cold periods. Heat shock can be prevented.

  Further, according to the invention of claim 3, since the hot water filling operation is filled with hot water having a temperature higher than the bath set temperature first, hot hot water flows into the cold bath bottom, and a large amount of steam is generated. The temperature and humidity of the bathroom can be raised, and when the third predetermined amount is reached, the bath can be made hot water without reaching the bath set amount or bath set water level. Therefore, it is possible to increase the temperature in the bathroom to prevent heat shock due to temperature fluctuations in cold weather, and even if there is a user who wants to bathe in the middle of hot water filling, it is possible to supply hot water at a set temperature at an early stage. Because it is possible, the risk of burns due to high temperatures can be suppressed.

  According to the invention of claim 4, it is confirmed whether the rising temperature of the bathroom from the start to the end of the hot water filling operation is equal to or higher than the predetermined rising temperature. If the temperature of the bathroom does not rise due to forgetting to open the lid of the bath, etc., the user is notified that there is a danger of heat shock. You can be informed that there is a danger.

1 is a schematic configuration diagram of a hot water storage type water heater according to a first embodiment of the present invention. The flowchart figure for demonstrating 1st Embodiment of this invention. The flowchart figure for demonstrating 2nd Embodiment of this invention. The flowchart figure for demonstrating the alerting | reporting at the time of the completion of heating hot water filling operation of this invention

A first embodiment of a hot water storage type water heater according to the present invention will be described with reference to FIG.
1 is a hot water storage tank for storing hot water, 2 is a water supply pipe for supplying water to the hot water storage tank 1, 3 is a heat pump heating means for heating water pumped from the lower part of the hot water storage tank 1, and 4 is a hot water pipe connected to the upper part of the hot water storage tank 1. It is.

  5 is a hot water supply bypass pipe that branches off in the middle of the water supply pipe 2, and 6 is a hot water supply that mixes high-temperature water taken out from the hot water storage tank 1 and the hot water supply water bypass pipe 5 at an appropriate ratio to adjust to a preset hot water supply temperature. A mixing valve, 7 is a hot water pipe through which hot water mixed by the hot water mixing valve 6 flows, 8 is a hot water flow sensor that detects the flow rate through the hot water pipe 7, and 9 is a hot water temperature sensor that detects the temperature of hot water flowing through the hot water pipe 6. Reference numeral 10 denotes a hot-water tap such as a shower that the user opens and closes.

  11 is a hot water supply bypass pipe that branches off in the middle of the water supply pipe 2, and 12 is a mixture of the hot water in the hot water storage tank 1 taken out and the water supply in the water supply bypass pipe 11 at an appropriate ratio to adjust the bath set temperature. A hot water filling valve, 13 is a hot water pipe through which hot water mixed by the hot water filling valve 12 flows, 14 is a hot water flow sensor for detecting the flow rate through the hot water filling pipe 13, and 15 is for opening and closing the hot water filling tube 13. An electromagnetic valve, 16 is a hot water temperature sensor for detecting the temperature of hot water flowing through the hot water tube 13, and 17 is a bathtub.

  18 is a bath piping that is a retreat path of the bath, 19 is a bath temperature sensor that detects the temperature of the bath, 20 is a bath heat exchanger provided for exchanging heat with hot water in the hot water storage tank 1, and 21 is a bath. This is a bath three-way valve that switches the flow path so as to bypass the bath heat exchanger 20 in the middle of the pipe 18.

  Reference numeral 22 is a control device configured by a microcomputer or the like, which performs a predetermined calculation based on the output of each sensor and controls the operation of the device, 23 is a temperature changing means, 24 is a user operating a temperature setting for hot water supply and bath A remote control unit having an operation unit capable of appropriately changing a certain hot water supply set temperature, a bath set temperature, and a bath set amount, which is a set amount of the hot water filling, is connected so as to be able to communicate the operated contents to the control device 22; A switch, 26 is a display unit for confirming and notifying the content set by the remote controller 24, 27 is a speaker for notifying a hot water filling completion report or prompting a user to perform a predetermined operation based on a result calculated by the control device 22, Reference numeral 28 denotes a bathroom temperature sensor that detects the temperature in the bathroom provided in the remote controller 24. Further, the display unit 26 and the speaker 27 that prompt the user for a predetermined operation are collectively referred to as a notification unit.

  29, when the controller 22 determines that the temperature of the bathroom is low, the normal hot water filling operation is switched to the heating hot water filling operation for raising the temperature of the bathroom, and the heating hot water filling operation control for controlling the heating hot water filling operation is performed. Means.

Next, the boiling operation will be described.
When there is a request for boiling, a circulating pump (not shown) in the middle of the pipe connecting the hot water storage tank 1 and the heat pump heating means 3 is driven to draw water from the lower part of the hot water storage tank 1 and warm it with the heat pump heating means 3 to store hot water. By continuing the operation of returning to the upper part of the tank 1, the water in the hot water storage tank 1 is gradually boiled up to high temperature water.

Next, the hot water supply operation will be described.
When the hot water tap 10 is opened, water is supplied from the water supply pipe 2 and flows into the lower part of the hot water storage tank 1, passes through the hot water supply water supply bypass pipe 5, and is pushed out of the hot water storage tank 1 from the upper part of the hot water storage tank 1. Hot water is mixed by the hot water supply mixing valve 7 and hot water adjusted so that the set temperature of hot water supply and the temperature detected by the hot water supply temperature sensor 9 are the same is supplied from the hot water tap 10.

Moreover, normal hot water operation will be described.
When the bath hot water filling switch 25 of the remote controller 24 is pressed, the control device 22 opens the electromagnetic valve 15 to supply water from the water supply pipe 2 and flow into the lower part of the hot water storage tank 1 and also to the hot water supply water supply bypass pipe 11. The hot water pushed out from the upper part of the hot water storage tank 1 and the water supply of the hot water supply bypass pipe 11 are mixed by the hot water mixing valve 12 so that the bath set temperature and the temperature detected by the hot water temperature sensor 16 are the same. Hot water filling is started by the hot water adjusted so as to bypass the bath heat exchanger 20 by the bath three-way valve 21 and flow into the bathtub 17. And the flow rate which flowed with the hot water filling flow sensor 14 is detected, and when the total integrated value of the flow rate which has flowed flows for the set amount of the bath, the control device 22 closes the solenoid valve 15 to end the hot water filling operation. .

  Next, a first embodiment of heating and hot water filling that simultaneously performs heating and hot water filling in the bathroom will be described in detail with reference to the flowchart of FIG.

  When the bath hot water switch 26 is pressed (S1), the control device 22 detects a detected temperature such as a bathroom temperature detected by a bathroom temperature sensor 28 provided in the remote controller 24 or an outside temperature detected by an outside air temperature sensor below a predetermined temperature (here) (S2).

  If the temperature is equal to or lower than the predetermined temperature (Yes in S2), the heating hot water operation control means 29 determines that the bathroom is cold and there is a risk of heat shock, and switches the normal hot water operation to the heating hot water operation. First, the hot water filling operation control means 29 notifies the user to open the bath lid with the display unit 26 and the speaker 27 of the remote controller 24 (S3), and the hot water filling valve 12 is set to the bath set temperature (here 42). The opening is opened to a predetermined heating temperature (here, 50 ° C.) that is higher than the temperature (° C.) and can generate a large amount of steam in the bathroom (S4), the solenoid valve is opened, and heating is performed. Hot water filling is started (S5). Thereafter, when the first predetermined amount (here, 100 L) is reached from the start of the hot water filling operation (S6), the hot water filling temperature is set to a predetermined adjustment temperature (38 ° C.) lower than the bath setting temperature, and the bath setting temperature and The opening degree of the hot water mixing valve 12 is adjusted so that the hot water filling is completed to the bath setting amount (S7).

  This section explains how to calculate the specified adjustment temperature. The first predetermined temperature is 42 ° C, the set amount of the bath is 300L, the predetermined heating temperature for generating steam in the bathroom is at least 50 ° C, and the hot water temperature is the first switching timing. When the predetermined amount is set to 100 L, x ° C., which is a predetermined adjustment temperature for setting the hot water supply set temperature after the first predetermined amount, is calculated by the following calculation formula. A predetermined adjustment temperature of x ° C. = 38 ° C. can be obtained from an equation of 100 L × (50 ° C.−42 ° C.) = 200 L × (42 ° C.−x ° C.).

  Then, the control device 22 confirms that the bath set temperature (here 42 ° C.) and the bath set amount (here 300 L) have been reached (S8), and if the bath set temperature and bath set amount have been reached (Yes in S8). ), The electromagnetic valve 15 is closed, and the supply to the bathtub 17 is stopped (S9).

  In this way, in the hot water filling operation, the hot water is filled with hot water having a temperature higher than the bath setting temperature first, so that hot water of hot water flows into the cold bath bottom, and a large amount of steam can be generated. Then, the opening degree of the hot water mixing valve 12 is adjusted so that the hot water filling of the bath set temperature and the bath set amount is completed and the supply to the bathtub 17 is continued. Can be completed, and the temperature in the bathroom can be raised to suppress heat shock due to temperature fluctuations during cold periods.

  When the bath hot water switch 25 is pressed, the hot water hot water operation control means 29 determines whether the bathroom is cold and there is a risk of heat shock. In order to switch the operation to the hot water filling operation, the user can save the time and effort of setting every day. Tensioning can be performed.

  If the temperature is not lower than the predetermined temperature (S2 is No), the controller 22 opens the hot water mixing valve 12 to an opening corresponding to the bath set temperature (S10), opens the electromagnetic valve 15, and normally. The hot water filling operation is started (S11). Thereafter, it is confirmed that the bath set temperature and the bath set amount have been reached (S12), the solenoid valve 15 is closed, and the supply to the bathtub 17 is stopped (S13).

  As described above, when the control device 22 determines that the bathroom temperature is high and there is no danger of heat shock, the normal hot water filling operation can be started without performing the unnecessary hot water hot water operation, so the user has to bother. There is no need to switch operation by checking the temperature in the bathroom, etc., and it is possible to perform a hot water operation that is easy to use.

  When the hot water filling operation and the normal hot water filling operation are completed, the display unit 26 and the speaker 27 notify the user that the hot water filling operation has been completed (S14).

  Next, a second embodiment of the heating hot water filling will be described with reference to the flowchart of FIG.

  When the bath hot water switch 25 is pressed (S15), the control device 22 confirms whether the bathroom temperature detected by the bathroom temperature sensor 28 provided on the remote controller 24 is equal to or lower than a predetermined temperature (here, 15 ° C. or lower) (S16). ).

  If the temperature is equal to or lower than the predetermined temperature (Yes in S16), the heating hot water operation control means 29 determines that the bathroom is cold and there is a risk of heat shock, and switches the normal hot water operation to the heating hot water operation. First, the hot water filling operation control means 29 notifies the user to open the bath lid with the display unit 26 and the speaker 27 of the remote control 24 (S17), and the hot water filling valve 12 is set to a set temperature (here 42 ° C.). The opening is opened to a predetermined heating temperature (in this case, 50 ° C.) that is higher than the temperature) and can generate a large amount of steam in the bathroom (S 18), the electromagnetic valve 15 is opened, and heating is performed. Hot water filling is started (S19). Thereafter, when the second predetermined amount (75 L in this case) has been reached since the start of heating hot water filling (S20), after the second predetermined amount of hot water filling, the third predetermined amount (here, 75 L, integrated hot water filling amount is 150 L). Until the temperature reaches the bath setting temperature, the opening degree is opened so that the hot water filling temperature is at least a predetermined adjustment temperature (here, 34 ° C.) lower than the bath setting temperature, and the supply is performed at the predetermined adjustment temperature. Continue (S21).

  This section explains how to calculate the specified adjustment temperature. The second place is a predetermined bath setting temperature of 42 ° C., a bath setting amount of 300 L, at least a predetermined heating temperature for generating steam in the bathroom at 50 ° C., and a hot water temperature switching timing. When the fixed amount and the third predetermined amount after filling the second predetermined amount of water are set to 75 L, respectively, the hot water supply between the second predetermined amount of hot water and the third predetermined amount is calculated using the following formula: X ° C., which is a predetermined adjustment temperature performed to obtain the set temperature, is calculated. The predetermined adjustment temperature of x ° C. = 34 ° C. can be obtained by the formula of 75 L × (50 ° C.−42 ° C.) = 75 L × (42 ° C.−x ° C.).

  When the third predetermined amount is reached (S22), the hot water mixing valve 12 is opened at an opening corresponding to the arbitrarily set bath setting temperature (S23).

  Then, the control device 22 confirms that the bath set temperature (42 ° C. here) and the bath set amount (300 L here) have been reached (S24), and if the bath set temperature and bath set amount have been reached (Yes in S24). ), The electromagnetic valve 15 is closed, and the supply to the bathtub 17 is stopped (S25).

  In this way, in the hot water filling operation, the hot water is filled with hot water having a temperature higher than the bath setting temperature first, so that hot water of hot water flows into the cold bath bottom, and a large amount of steam can be generated. Then, the opening degree of the hot water mixing valve 12 is adjusted so that the hot water filling of the bath set temperature and the bath set amount is completed and the supply to the bathtub 17 is continued. Can be completed, and the temperature inside the bathroom can be raised to prevent heat shock due to temperature fluctuations during cold periods. Since hot water can be supplied, the risk of burns due to high temperatures can be suppressed.

  When the bath hot water switch 25 is pressed, the hot water hot water operation control means 29 determines whether the bathroom is cold and there is a risk of heat shock. In order to switch the operation to the hot water filling operation, the user can save the time and effort of setting every day, and even if the user forgets to open the lid, the hot water is set at the bath setting temperature and the bath setting amount desired by the user upon completion. Tensioning can be performed.

  When the temperature is not lower than the predetermined temperature (S16 is No), the controller 22 opens the hot water mixing valve 12 to an opening corresponding to the bath set temperature (S26), opens the electromagnetic valve 15, and normally. Hot water filling operation is started (S27). Thereafter, it is confirmed that the bath set temperature and bath set amount have been reached (S28), the electromagnetic valve 15 is closed, and the supply to the bathtub 17 is stopped (S29).

  As described above, when the control device 22 determines that the bathroom temperature is high and there is no danger of heat shock, the normal hot water filling operation can be started without performing the unnecessary hot water hot water operation, so the user has to bother. There is no need to switch operation by checking the temperature in the bathroom, etc., and it is possible to perform a hot water operation that is easy to use.

  When the heating hot water filling operation and the normal hot water filling operation are completed, the display unit 26 and the speaker 27 notify the user that the hot water filling operation has been completed (S30).

  Further, alerting at the end of the heating and hot water filling operation will be described based on the flowchart of FIG.

When the heating hot water filling operation is completed (S31), the heating hot water filling operation control means 29 determines whether the temperature change of the bathroom at the start of the heating hot water filling and at the end of the hot water filling operation is less than a predetermined rising temperature (here, 5 ° C.). If it is confirmed (S32) and the temperature is lower than the predetermined temperature rise (S32 is Yes), it is considered that the temperature of the bathroom has not been sufficiently increased because the user forgot to open the bathtub lid at the start of hot water filling. Therefore, it is determined that there is a risk of heat shock to the user, alerting the user and notifying that the hot water filling has been completed (S33).

  If the temperature is equal to or higher than the predetermined temperature rise (No in S32), the temperature of the bathroom rises, and it is determined that bathing can be performed safely, and only the completion of hot water filling is notified (S34).

  In this way, even if the heating / watering operation is performed, the lid of the bathtub 17 is not opened, etc., and the bathroom temperature does not rise. By doing so, heat shock can be surely prevented.

  In addition, this invention is not limited to 1st and 2nd embodiment, It does not prevent changing in the range which does not change a summary, For example, although this time demonstrated using the heat pump type hot water storage hot-water supply machine, The heater in the hot water storage tank 1 may be used. In the present invention, the bathroom condition is confirmed by the bathroom temperature sensor 28 provided on the remote controller 24. However, the outdoor temperature is detected by the outdoor unit equipped with the heat pump type heating means 3, and the detected temperature is low and the risk of heat shock. If there is, there is a possibility to switch between normal hot water filling and heating hot water filling.

  The first predetermined amount of the first embodiment refers to the bath setting amount 300L, and the first predetermined amount is set to 1/3 of the bath setting amount, and the second predetermined amount of the second embodiment. The predetermined amount and the third predetermined amount refer to the bath set amount 300L, the bath set amount 1/4 hot water amount is the second predetermined amount, and the bath set amount 1/2 hot water amount is the third set amount. Although the predetermined amount is used, the value of the predetermined amount may be appropriately changed within a range not changing the gist.

  In this embodiment, the hot water filling temperature calculated by the hot water filling flow sensor 14 such as the first predetermined amount, the second predetermined amount, and the third predetermined amount is used to switch the hot water temperature of the hot water hot water operation. Although the predetermined amount to be performed is counted, the same effect can be obtained even if the predetermined amount is counted in the elapsed time when the hot water filling flow sensor 14 is turned on after the hot water filling is started. In addition, the predetermined amount, the predetermined temperature, the predetermined heating temperature, and the predetermined adjustment temperature may be appropriately changed within a range in which the gist is not changed in accordance with the bath setting amount and bath setting temperature that are arbitrarily changed by the user.

DESCRIPTION OF SYMBOLS 1 Hot water storage tank 2 Water supply pipe 4 Hot water pipe 12 Hot water filling mixing valve 13 Hot water filling pipe 14 Hot water filling flow sensor 17 Bathtub 22 Control device 23 Temperature change means 24 Remote control 26 Display part 27 Speaker 28 Bathroom temperature sensor 29 Heating hot water filling operation control means

Claims (4)

  In the bath water heater that performs hot water filling operation to the bathtub, when the outside air temperature or the bathroom temperature is low at the start of normal hot water filling operation, it is provided with a notification unit that makes a notification prompting the user to open the lid of the bathtub. A bath water heater.   The control device of the bath water heater includes a heating hot water filling device that switches the normal hot water filling operation to the heating hot water filling operation and controls the heating hot water filling operation when the outside air temperature or the bathroom temperature is low at the start of the normal hot water filling operation. An operation control unit is provided, and the notification unit notifies the user to open the bathtub lid at the start of the hot water filling operation, and the heating hot water operation control unit arbitrarily sets a hot water filling temperature. When the supply of hot water is started at a predetermined heating temperature higher than the set bath setting temperature and the first predetermined amount of hot water is supplied, the heating hot water filling operation control means is set to an arbitrarily set bath setting amount or Adjust the hot water temperature so that the hot water in the bathtub is at the bath set temperature when the bath set water level is reached, and continue to supply, and when the bath set amount or the bath set water level is reached, supply is stopped and the hot water is filled. operation Bath water heater according to claim 1, characterized in that so as to terminate.   The control device of the bath water heater includes a heating hot water filling device that switches the normal hot water filling operation to the heating hot water filling operation and controls the heating hot water filling operation when the outside air temperature or the bathroom temperature is low at the start of the normal hot water filling operation. An operation control unit is provided, and the notification unit notifies the user to open the bathtub lid at the start of the hot water filling operation, and the heating hot water operation control unit arbitrarily sets a hot water filling temperature. The hot water supply operation is started at a predetermined heating temperature higher than the set bath temperature, and when the second predetermined amount is reached, the hot water filling operation control means The hot water filling temperature is kept at a predetermined adjustment temperature lower than the bath setting temperature set arbitrarily so that the hot water filling temperature reaches the third predetermined amount. Set temperature Continues to provide, upon reaching a bath set amount or bath set water level, the bath water heater according to claim 1, characterized in that so as to terminate the heating water filling operation by stopping the supply.   The heating hot water filling operation control means confirms whether the temperature rise of the bathroom due to the heating hot water filling operation is equal to or higher than a predetermined rising temperature, and when the heating hot water filling operation is finished, if it is less than the predetermined rising temperature, there is a risk of heat shock. The hot water storage type hot water supply device according to any one of claims 2 and 3, characterized in that an alert to the effect that there is a warning is provided.

Images