JP2013231563A - Hot water machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot water machine capable of performing initial setting related to water supplied to a storage tank in a short time.SOLUTION: A hot water machine S comprises: a tank unit 5 for heating water and supplying it to a bath tub 2 and a heat pump unit 8; a controller 16 for controlling these items; and a bath remote controller 45 connected to the controller 16 so as to be communicative. The bath remote controller 45 transmits shape data of the bath tub 2 to the controller 16 according to the operation of a user, and the controller 16 decides a reference amount of water supplied to the bath tub 2 on the basis of the shape data of the bath tub 2 transmitted from the bath remote controller 45.

Description

  The present invention relates to a water heater.

  Conventionally, in a water heater that stores hot water boiled by a heat source device in a hot water storage tank and supplies the stored hot water to a bathtub (storage tank), the water level and the amount of water differ depending on the shape of the bathtub. The initial setting is performed at the time of a trial run immediately after installation of the water, and the water level and the amount of water in the bathtub are detected and stored (see Patent Document 1).

Japanese Patent Laid-Open No. 11-83157

  In the technique described in Patent Document 1, water is gradually added to the bathtub, the water level is detected many times, and the water level and the amount of water are stored when a suitable water level is reached. Setting takes time.

  The present invention has been developed to solve the above-described problems, and an object thereof is to provide a water heater capable of performing initial setting relating to water supplied to a storage tank in a short time.

  In order to solve the above problems, a water heater of the present invention includes a water supply unit that supplies water to a storage tank, an operation terminal that transmits shape data of the storage tank that is specified in accordance with an operation by a user, and the operation terminal. Based on the transmitted shape data of the storage tank, a reference amount of the water to be supplied to the storage tank is determined, and the water of the determined reference amount is supplied to the storage tank by controlling the water supply unit. And a control device.

  ADVANTAGE OF THE INVENTION According to this invention, the initial setting regarding the water supplied to a bathtub can be performed in a short time.

It is a lineblock diagram showing an example of a water heater concerning an embodiment of the present invention. It is a block diagram which shows the controller and bath remote control of FIG. It is a figure which shows the external appearance of the bathroom remote control of FIG. (A)-(c) is a figure which shows the example of a shape data input screen. It is a flowchart for demonstrating the operation example of the controller and bath remote control of the electric water heater which concerns on embodiment of this invention. It is a flowchart for demonstrating the operation example of the controller and bath remote control of the electric water heater which concerns on embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. Similar parts are denoted by the same reference numerals, and redundant description is omitted.

<Overall configuration of water heater S>
As shown in FIG. 1, a water heater (liquid heating device, bathtub water heater) S according to the present embodiment is an electric water heater, and a hot water storage tank 1 for storing hot water and water for storing hot water in the hot water storage tank 1. The hot water supply unit S is supplied with water from a water supply source (for example, a water pipe 22) via a pipe 7. Specifically, the hot water heater S heats low temperature water supplied from a water supply source by the heat pump unit 8 to generate hot water (hot water), and stores the generated hot water in the hot water storage tank 1. That is, the water heater S is a hot water storage tank 1 as a water supply unit that supplies water (including hot water or hot water) in the hot water storage tank 1 to the bathtub (storage tank) 2, in this embodiment, a hot water supply unit that heats and supplies hot water. The tank unit 5 including the heat pump unit 8 is configured.

  The tank unit 5 of the water heater S includes a hot water supply heat exchanger 4 that heats low temperature water from the water pipe 22 by exchanging heat with hot water in the hot water storage tank 1 to generate hot water for hot water supply. In this case, the hot water storage tank 1 functions as a storage tank that stores hot water as a heat medium that exchanges heat with low-temperature water. The tank unit 5 of the water heater S includes a reheating heat exchanger 24 that heats the bath water derived from the bathtub 2 by exchanging heat with hot water in the hot water storage tank 1. Furthermore, the water heater S is provided with an operation terminal 60 having a bath remote controller 45, a kitchen remote controller 46, and the like operated by a user for hot water filling, chasing, hot water supply, etc., and an operation command from the operation terminal 60, etc. And a controller 16 for comprehensively controlling the entire machine S.

  The hot water heater S includes a hot water supply circuit (general hot water supply circuit 2X and hot water filling circuit 2Y to be described later) for supplying fresh water heated to the hot water supply terminal, and hot water stored in the hot water storage tank 1 for the bathtub water taken out from the bathtub 2. (In this case, it functions as a heat medium) and a reheating circuit 2Z that exchanges heat with the reheating heat exchanger 24 and returns it to the bathtub 2.

  The hot water supply circuit includes a general hot water supply circuit 2X that supplies hot water to a general hot water supply terminal (faucet, shower, etc., in this embodiment, the mixing plug 19), and a hot water filling circuit 2Y that supplies hot water to the bathtub terminal provided in the bathtub 2. And are included. Further, as a supply source of fresh water supplied to the hot water supply circuit, in addition to an external water supply source such as a water pipe 22 or well water, a hot water storage tank 1 for storing fresh water can be considered.

  Here, fresh water refers to water before use that has not yet passed through a state in which the user can directly contact, and includes water from a water supply source or water stored in the hot water storage tank 1 while being in a bathtub. It is distinguished from the water after use (in particular, the bath water once supplied to the bathtub 2) including the dirt supplied to the second grade.

The general hot water supply circuit 2X, the pressure of the water in the hot water storage tank 1 (e.g., about 2 kg / cm ² (about 0.20 MPa)) pressure higher than (e.g., about 6~8kg / cm ² (about 0.59 ˜0.78 MPa)) of fresh water. Specifically, the general hot water supply circuit 2X distributes tap water that has not been decompressed as the fresh water. However, the general hot water supply circuit 2X is not limited to this, and may supply a heat medium (that is, water) in the hot water storage tank 1 using the internal pressure of the hot water storage tank 1, a pump, or the like. The voltage may be boosted and supplied using. Moreover, the said general hot water supply circuit 2X is comprised so that fresh water can be distribute | circulated with the faster flow velocity than the said reheating circuit 2Z. For example, fresh water flows through the general hot water supply circuit 2X at about 2 m / s, for example, while bath water flows through the reheating circuit 2Z at about 1.0 to 1.5 m / s during reheating.

  Specifically, the general hot water supply circuit 2 </ b> X causes fresh water supplied from a water supply source to exchange heat with hot water stored in the hot water storage tank 1 (in this case, it functions as a heat medium) by a hot water supply heat exchanger 4. (Ie, heated) and supplied to the mixing tap 19 which is a general hot water supply terminal. The hot water filling circuit 2 </ b> Y supplies hot water from the hot water storage tank 1 to the bathtub terminal of the bathtub 2.

  Hereinafter, the structure of each part of the water heater S will be described in detail.

<Heat pump unit 8>
The heat pump unit 8 shown in FIG. 1 absorbs the external heat with a refrigerant such as expanded low-temperature carbon dioxide, and then heats it with the refrigerant compressed to a high temperature and the low-temperature water from the hot water storage tank 1 flowing through the pipe 34. It is a device that exchanges and heats low-temperature water. The heat pump unit 8 repeatedly expands and compresses the refrigerant, absorbs heat from the outside and heats the low-temperature water, and a circulation pump (not shown) that circulates the low-temperature water in the hot water storage tank 1 flowing through the pipe 34. And.

  The heat pump includes a compressor that compresses the refrigerant, a gas cooler (not shown) that heats the low-temperature water by exchanging heat between the compressed high-temperature refrigerant and the low-temperature water from the hot water storage tank 1, and expands the refrigerant. It has an expansion valve that depressurizes, and a heat absorber that absorbs the heat of the outside air by the refrigerant that has been depressurized and whose temperature has dropped. The circulation pump pumps low-temperature water from the lower part of the hot water storage tank 1 through the pipes 32 and 34 in order, passes the gas cooler of the heat pump and heats it, and then heats the hot water that has been heated to a high temperature through the pipe 35. Return to the top.

<Hot water storage tank 1>
In the hot water storage tank 1 shown in FIG. 1, tap water from the water pipe 22 is sequentially introduced through the pipe 7, the pipe 36 a, the pipe 23 a, the pressure reducing valve 6 and the pipe 23 b, and the water in the hot water storage tank 1. Is led to the heat pump unit 8 through the pipe 32, the three-way valve 33 and the pipe 34 in order and heated by the gas cooler of the heat pump to become hot water, and then led to the upper part of the hot water storage tank 1 through the pipe 35. It is stored in.

  The temperature of the hot water in the hot water storage tank 1 becomes higher as it goes from the lower side to the upper side in the vertical direction, that is, the temperature distribution becomes relatively low, medium and high as it goes from the lower part to the upper part in the hot water storage tank 1. For example, the temperature is about 90 ° C. in the upper part of the hot water storage tank 1. In addition, the warm water in the intermediate part of the vertical direction in the hot water storage tank 1 is called intermediate warm water.

  In the hot water storage tank 1, a plurality of temperature sensors 47, 48, 49, 50, 51, 52 for detecting the temperature of the hot water stored in the vertical direction are arranged from the upper part to the lower part. A detection signal indicating the temperature of the hot water in the hot water storage tank 1 detected by 47, 48, 49, 50, 51, 52 is output to the controller 16 and used for controlling the water heater S.

<Water filling circuit 2Y>
The hot water filling circuit 2 </ b> Y is a circuit for supplying hot water stored in the hot water storage tank 1 to the bathtub 2 and filling the bathtub 2 with hot water. The hot water filling circuit 2Y guides the hot water at the upper part of the hot water storage tank 1 to the first mixing valve 14 through the pipe 41a and the pipe 54 connected to the first extraction part 10 at the upper part of the hot water storage tank 1 in order. In the mixing valve 14, it is mixed with tap water that has been sequentially passed from the water pipe 22 through the pipe 7, the pipe 36 a, the pipe 23 a, the pressure reducing valve 6, and the pipe 23 c, and is disposed downstream of the first mixing valve 14. A first path that sequentially passes through the pipes 29c, 29b, and 29a through the solenoid valve 28 that is controlled to be opened, a pipe 29c, a connection portion 30, a pipe 25, a pump 27, a flow rate adjustment valve (or a circulation adjustment valve) 31, and a bypass It is the structure which fills the bathtub 2 with two paths | routes which pass along the piping 63 sequentially and are connected to the piping 3a by the junction part 65, and the 2nd path | route which passes along the piping 3b. In addition, the connection part 30 is a part to which the hot water filling circuit 2Y and the reheating circuit 2Z are connected.

  Here, the pipe 29a is connected to a water circulation port 2i provided in the bathtub 2, and the pipe 3b is connected to a water circulation port 2o of the bathtub 2, and through these water circulation ports 2i and 2o. The hot water filling is done. That is, in this case, the water circulation ports 2i and 2o function as bathtub terminals.

<Hot water supply heat exchanger 4>
The hot water supply heat exchanger 4 is led from the upper part of the hot water storage tank 1 by the hot water supply circulation pump 18 whose operation is controlled when there is a hot water supply request to the controller 16 from the tap water supplied sequentially through the water pipe 22 and the pipe 7. This is a device that heats to a predetermined temperature by exchanging heat with hot water. The heated water is supplied to the mixing plug 19 and supplied with hot water.

  The mixing plug 19 is used for supplying hot water in a bathroom, for example. At the time of hot water supply, the tap water introduced into the hot water supply heat exchanger 4 from the water pipe 22 through the pipe 7, the pipe 36a and the pipe 36b in this order is supplied to the hot water storage tank 1 by the hot water supply circulation pump 18 (provided in the pipe 42). After being heated by the hot water in the upper part of the hot water storage tank 1 introduced into the hot water supply heat exchanger 4 from the upper first take-out section 10 through the pipe 41a and the pipe 41b in sequence, the pipe 36c, the accumulator 39 and the pipe 40 are sequentially placed. Then, it is supplied to the mixing plug 19 as hot water.

  On the other hand, in the hot water supply heat exchanger 4, the water that has been cooled by exchanging heat with tap water and discharged from the hot water supply heat exchanger 4 is returned to the hot water storage tank 1 through the pipe 42. In addition, although the water discharged from the hot water supply heat exchanger 4 is returned to the lower part of the hot water storage tank 1, it may be returned upward from the bottom of the hot water storage tank 1.

<Hot water supply circulation pump 18>
The hot water supply circulation pump 18 shown in FIG. 1 uses an inverter circuit (not shown) of the controller 16 so that the hot water temperature detected by the hot water temperature sensor 37 in the pipe 36c becomes the hot water temperature set by the operation terminal 60. The rotation speed is freely controlled (feedback control).

  That is, when the hot water temperature detected by the hot water temperature sensor 37 is lower than the hot water temperature set by the operation terminal 60, the controller 16 determines the rotational speed of the hot water circulation pump 18 that circulates hot hot water in the hot water storage tank 1. Increase the amount of heat given to the tap water to increase the hot water supply temperature. On the other hand, when the hot water temperature is higher than the hot water temperature set by the operation terminal 60, the controller 16 reduces the amount of heat applied to the tap water by decreasing the rotational speed of the hot water circulation pump 18 so as to lower the hot water temperature. The hot water supply circulation pump 18 is controlled.

<Reheating heat exchanger 24>
In the reheating heat exchanger 24 shown in FIG. 1, a pipe 29 a, a pipe 29 b, a pipe 25, a pump 27, a flow rate adjustment valve 31, and a pipe 58 from which the bath water in the bathtub 2 is led out are sequentially connected to the inlet 24 i side. On the outlet 24o side, a pipe 26, a pipe 3a, and a pipe 3b are returned in sequence, in which the heated water that has been heated and reheated in the reheating heat exchanger 24 with the high-temperature water in the upper part of the hot water storage tank 1 returns to the bathtub 2. It is connected.

<Turning circuit 2Z>
The chasing circuit 2Z is a circuit for chasing the bath water stretched on the bathtub 2. When reheating, the bath water in the bathtub 2 is led out from the water circulation port 2i of the bathtub 2, and the pipe 29a, the pipe 29b, the connection part 30, the pipe 25, the pump 27, and the flow rate adjustment connected to the water circulation port 2i. The valve 31, the pipe 58, the reheating heat exchanger 24, the pipe 26, the pipe 3a, and the pipe 3b disposed in the hot water at the upper part of the hot water storage tank 1 are sequentially passed through the water circulation port 2o connected to the pipe 3b. And is configured to be returned to the bathtub 2.

  In addition, the low-temperature bath water in the bathtub 2 is indirectly heat-exchanged with the high-temperature hot water in the upper part of the hot water storage tank 1 in the reheating heat exchanger 24 so that the reheating is efficiently performed in a short time. It is configured.

  Here, the reheating temperature is set by the user operating the operation terminal 60 such as the bath remote controller 45 or the kitchen remote controller 46. The temperature sensor 56 detects the temperature of the hot water before passing through the pipe 29b, and the temperature sensor 59 detects the temperature of the hot water passing through the pipe 26 after being driven, and each detection signal is input to the controller 16. Is done. Then, in the controller 16, a pump 27 that recirculates the bath water in the bathtub 2 and circulates it to the heat exchanger 24 until the temperature sensor 56 detects that the temperature of the hot water in the bathtub 2 has reached the set temperature of the user. To control the operation and continue the chasing mode. Then, when the temperature of the hot water in the bathtub 2 reaches the set temperature of the user, the operation of the pump 27 is stopped and the reheating mode is ended.

<Operation terminal 60>
The operation terminal 60 shown in FIG. 1 is a device in which a user performs an input operation in order to perform hot water filling, chasing, hot water supply, etc. with the hot water heater S. The operation terminal 60 is disposed in a bathroom remote controller 45 and a kitchen. Kitchen remote control 46 and the like.

  The operation terminal 60 can select a hot water filling mode for filling the bathtub 2, a reheating mode for replenishing the bath water in the bathtub 2, a hot water supply mode for supplying hot water from the mixing tap 19, and the like. The temperature can be set such as the temperature of hot water during hot water filling, the temperature of hot water during reheating, the temperature of hot water during hot water supply, and the like. The operation terminal 60 is connected to the controller 16 in a wired or wireless manner, and an input operation to the operation terminal 60 by a user is input to the controller 16 as an operation signal.

<Controller 16>
The controller 16 is a control device that electronically controls the water heater S, and includes a microcomputer that performs control according to signals detected by various sensors such as the operation terminal 60 and the temperature sensor 48, and an operation terminal. 60. An input circuit such as an amplifier circuit and an A / D converter circuit that converts detection signals detected by various sensors into input signals suitable for the microcomputer, and hot water circulation according to the output signal of the control signal from the microcomputer A drive circuit for driving an actuator such as the pump 18 and an output interface such as a relay drive circuit are provided.

  The controller 16 controls various actuators such as the solenoid valve 28, the pump 27, the hot water circulation pump 18 and the heat pump unit 8 in the hot water heater S according to a program stored in a ROM (Read Only Memory) of the microcomputer, and the hot water filling. In this mode, various modes such as chasing, hot water supply and the like are controlled.

<Details of operation of piping system of water heater S>
Next, the operation | movement detail of the piping system of the water heater S is demonstrated.

<Storage of hot water in hot water storage tank 1>
Supply of tap water to the hot water storage tank 1 is performed by tap water in the water pipe 22 with a water pressure of, for example, about 6 to 8 kg / cm ² (about 0.59 to 0.78 MPa). 7 and the pipe 23a are sequentially led to the pressure reducing valve 6, and after the pressure is reduced to a predetermined pressure, for example, about 2 kg / cm ² (about 0.20 MPa) in the pressure reducing valve 6, the pipe 23b and the check valve 20 are sequentially turned on. This is done by introducing it into the lower part of the hot water storage tank 1. The check valve 20 plays a role of preventing the backflow of tap water from the hot water storage tank 1.

  The tap water introduced into the hot water storage tank 1 is introduced into the heat pump unit 8 through the pipe 32, the three-way valve 33 and the pipe 34 in this order, and is heated by the gas cooler (not shown) of the heat pump unit 8 as hot water. Is introduced into the upper part of the hot water storage tank 1 through the pipe 35 and stored in the hot water storage tank 1.

<Hot water supply mode from the mixer tap 19>
Next, hot water supply from the mixing plug 19 in the hot water heater S will be described. As shown by a broken line in FIG. 1, the hot water heater S includes a circulation circuit in which hot hot water in the hot water storage tank 1 circulates through the hot water supply heat exchanger 4. The tap water is heated by exchanging heat between the tap water from the water pipe 22 and the hot hot water from the hot water storage tank 1.

  For example, when the user operates the bath remote controller 45 to select the hot water supply mode, a hot water supply mode selection signal is input to the controller 16, and the hot water circulation pump 18 is operated by the signal from the controller 16, and the hot water in the upper part of the hot water storage tank 1 is operated. As shown by the broken line in FIG. 1, the water is extracted from the first extraction unit 10 to the hot water supply heat exchanger 4 through the pipe 41a and the pipe 41b in order, and the hot water supply heat exchanger 4 performs heat exchange with low-temperature tap water. The hot water whose temperature has decreased is returned to the lower part of the hot water storage tank 1 via the pipe 42. A check valve 44 on the way from the outlet of the hot water supply heat exchanger 4 to the lower part of the hot water storage tank 1 serves to prevent the natural circulation of hot water in the hot water storage tank 1 and hot water storage when the hot water supply circulation pump 18 is replaced. It plays the role of preventing the backflow of warm water in the tank 1.

  When hot water is supplied using the hot water supply heat exchanger 4, tap water from the water pipe 22 is introduced into the hot water supply heat exchanger 4 through the pipe 7, the pipe 36 a, and the pipe 36 b sequentially by the water pressure, and the hot water supply heat is supplied. The tap water heated by the exchanger 4 to become hot water is supplied to one side of the mixing plug 19 through the pipe 36c, the hot water supply temperature sensor 37, the hot water supply flow rate sensor 38, the accumulator 39 and the pipe 40 in this order. And in the mixing plug 19, a user mixes the tap water from the water pipe 22 connected to the other side of the mixing plug 19 and the supplied hot water, and adjusts the temperature of the hot water supply.

  Note that the accumulator 39 has a hot water remaining in the accumulator 39 in order to prevent an overshoot phenomenon in which hot water blows out from the faucet of the mixing tap 19 when the hot water flow rate is about 2 to 3 liters / min. It is arranged to mix with water and cool to an appropriate temperature.

  The temperature of the hot water supplied from the hot water supply heat exchanger 4 to the mixing plug 19 is determined from the temperature of the hot water detected by the temperature sensor 47 at the top of the hot water storage tank 1 using the controller 16 in the tank unit 5, from the water pipe 22. Based on the temperature detected by the water temperature sensor 53 of the tap water going to the hot water heat exchanger 4 through the pipe 7, the flow rate detected by the hot water flow sensor 38, etc., the operation terminals 60 such as the kitchen remote controller 46, the bath remote controller 45, etc. The hot water from the hot water storage tank 1 that flows through the primary side that gives heat to the tap water is controlled in the hot water supply heat exchanger 4 by controlling the rotational speed of the hot water supply circulation pump 18 so that the predetermined hot water supply temperature set in step 1 is reached. The flow rate is controlled.

  According to this structure, since the high water pressure of the tap water from the water pipe 22 can be utilized, for example, a shower on the third floor is possible, and a pressure reducing valve and a negative pressure breaking valve can be dispensed with. Moreover, by using a sealed hot water supply system that introduces tap water depressurized via the pressure reducing valve 6 into the hot water storage tank 1, parts such as a cistern tank, an overflow switch, and a level switch are not required, and the system is simplified. Hygiene concerns are also eliminated, and noise during water supply is also eliminated.

<Controller 16 and bath remote controller 45>
Next, details of the controller 16 and the bathroom remote controller 45 according to the present embodiment will be described with reference to FIGS.

<Controller 16>
As shown in FIG. 2, the controller 16 includes a control unit (CPU) 16 a that controls a hot water supply unit (the tank unit 5 and the heat pump unit 8) of the water heater S and a storage unit (here, ROM, RAM) as functional units. And a communication unit 16c that transfers data between the bathroom remote controller 45 and the kitchen remote controller 46. Of the storage unit 16b, the EEPROM stores data related to the hot water supply unit. The control unit 16a, the storage unit 16b, and the communication unit 16c are mounted on the substrate 16s. The substrate 16s can be replaced when an error occurs.

  The control unit 16a controls the hot water supply unit (the tank unit 5 and the heat pump unit 8) of the water heater S based on the data transmitted from the remote controllers 45 and 46 and the data stored in the storage unit 16b. Unit control unit) 16a1.

  The hot water supply unit control unit 16a1 controls the tank unit 5 and the heat pump unit (heating unit) 8 to heat the water to generate hot water and store it in the hot water storage tank 1, or use the general hot water supply circuit 2X to supply hot water. The hot water filling circuit 2Y is used to supply hot water to the bathtub 2 (hot water filling), and the hot water charged in the bathtub 2 is heated using the reheating circuit 2Z. Moreover, the hot water supply part control part 16a1 performs what is called a residual water check which determines whether the boiling water beyond a predetermined water level remains in the bathtub 2 using the circulation circuit 2W.

<Circuit circuit 2W and residual water check>
Here, with reference to FIG.1 and FIG.2, the residual water check using the circulation circuit 2W and the circulation circuit 2W is demonstrated. As shown in FIG. 1, the circulation circuit 2W includes a water flow port 2i of the bathtub 2 → pipe 29a → pipe 29b → pipe 25 → flow rate adjusting valve 31 → bypass pipe 63 → pipe 3a → water flow port 2o of the bathtub 2 → tub. It is a closed circuit in which the bath water in the bathtub 2 circulates in the order of the two water circulation ports 2i →. The pipe 29b is provided with a water level sensor 57 that detects the water level and outputs it to the control unit 16a when the water level of the bath water stretched in the bathtub 2 is higher than the water circulation port 2i. A flow switch 55 is provided that outputs an ON signal to the control unit 16a when water is flowing. The detection results of the water level sensor 57 and the flow switch 55 are output to the controller 16.

  During the remaining water check, the hot water supply controller 16a1 controls the flow rate adjustment valve 31 so that water can flow between the pipe 29 and the bypass pipe 63, and drives the pump 27 provided in the pipe 29. The hot water supply controller 16a1 determines that there is no remaining water when the flow switch 55 is continuously OFF for a predetermined time (for example, 20 seconds), and when the flow switch 55 is ON for a predetermined time (for example, 1 minute) continuously. Determines that there is residual water. Here, “no residual water” means that the water level of the bath water stretched in the bathtub 2 is lower than the water distribution port 2i, and the bath water does not circulate in the circulation circuit 2W in the residual water check. The water level of the bath water stretched in the bathtub 2 is higher than the water distribution port 2i, and the bath water circulates in the circulation circuit 2W in the residual water check.

<Bloo remote control 45>
The bath remote controller 45 transfers data between a control unit (CPU) 45a, a storage unit (here, composed of ROM, RAM, and flash memory) 45b, and the controller 16 and the kitchen remote control 46 as functional units. The communication unit 45c includes an operation unit 45d (see FIG. 3) including various buttons, a display unit 45e (see FIG. 3) including a display, and a speaker 45f.

  The control unit 45a includes a data processing unit 45a1.

  Based on the operation of the operation unit 45d by the user, the data processing unit 45a1 transmits data such as the hot water supply temperature, bath temperature, and water level to the controller 16 and the kitchen remote control 46 via the communication unit 45c, and also supplies the hot water temperature and bath temperature. The temperature, water level, and the like are displayed on the display unit 45e.

  Further, the data processing unit 45a1 displays the shape data input screen shown in FIG. 4 on the display unit 45e, and according to the operation of the operation unit 45d based on the operation of the operation unit 45d by the user who viewed the display unit 45e. Shape data indicating the shape of the designated bathtub 2 is transmitted to the controller 16.

<Input of shape data and determination of reference water volume>
For example, the data processing unit 45a1 causes the display unit 45e to display the shape data input screen illustrated in FIG. The user who has viewed the display unit 45e operates the upper button 45d1, the lower button 45d2, the left button 45d3, the right button 45d4, and the enter button 45d5 of the operation unit 45d to measure the vertical, horizontal, and height dimensions of the bathtub 2. Enter. The data processing unit 45a1 transmits the input vertical, horizontal, and height dimensions to the controller 16 as shape data. When the hot water supply controller 16a1 of the controller 16 acquires the shape data, it calculates the volume of the bathtub 2 based on the shape data, and determines a predetermined proportion of the calculated volume as the reference water amount. Such a reference water amount is the amount of water that is the water level used for the intermediate check in the normal hot water operation, where the water level in the bathtub 2 is higher than the water circulation port 2i. In the intermediate check, the controller 16 performs a residual water check similar to the first hot water filling operation described later, and performs a water level check when it is determined that there is residual water. In the water level check, the controller 16 compares the current water level with the reference water level, and calculates the pouring amount after the intermediate check from the difference.

  The data processing unit 45a1 may be configured to display the shape data input screen shown in FIG. 4B on the display unit 45e. The user who views the display unit 45e inputs the type of the bathtub 2 (tub type) by operating the upper button 45d1, the lower button 45d2, the left button 45d3, the right button 45d4, and the enter button 45d5 of the operation unit 45d. . The data processing unit 45a1 transmits the input bathtub format to the controller 16 as shape data. When the hot water supply control unit 16a1 of the controller 16 acquires the shape data, the hot water supply control unit 16a1 determines the reference water amount by referring to the relationship between the bathtub type and the reference water amount stored in advance in the storage unit 16b.

  The data processing unit 45a1 may be configured to display the shape data input screen shown in FIG. 4C on the display unit 45e. The user who views the display unit 45e inputs the size of the bathtub 2 (three choices of large, medium, and small) by operating the left button 45d3, the right button 45d4, and the enter button 45d5 of the operation unit 45d. If it is an operator, if the bathtub 2 is seen, it can be judged whether the magnitude | size is large, medium, or small. The data processing unit 45a1 transmits the input size of the bathtub 2 to the controller 16 as shape data. When the hot water supply control unit 16a1 of the controller 16 acquires the shape data, the hot water supply control unit 16a1 determines the reference water amount by referring to the relationship between the size of the bathtub 2 and the reference water amount stored in advance in the storage unit 16b.

<Operation example>
Subsequently, an example of the operation of the controller 16 and the bathroom remote controller 45 will be described with reference to FIGS. 5 and 6, taking as an example the case where the reference water amount and the reference water level are determined in the first filling operation after the water heater S is installed. (Refer to FIGS. 1 to 4 as appropriate). In the hot water filling operation, so-called hot water filling is performed in which bath water (hot water) is supplied to the empty bathtub 2 and stored in the bathtub 2.

<Standard water volume determination>
As shown in FIG. 5, first, the data processing unit 45a1 displays a shape data input screen on the display unit 45e (step S11). When the user operates the operation unit 45d of the remote controller 45 and the data processing unit 45a1 acquires shape data (Yes in step S12), the data processing unit 45a1 transmits the shape data to the controller 16 via the communication unit 45c. (Step S14).

  Subsequently, when the hot water supply control unit 16a1 of the controller 16 acquires shape data via the communication unit 16c (Yes in step S21), the hot water supply control unit 16a1 is a reference that is a kind of water amount data based on the shape data. The amount of water is determined (step S22) and stored in the storage unit 16b (step S23).

<Reference water amount correction and reference water level determination in hot water operation>
Subsequently, as shown in FIG. 6, the hot water supply controller 16a1 uses the hot water filling circuit 2Y to supply a hot water supply amount smaller than the reference water amount stored in the storage unit 16b (for example, 80% of the reference water amount, the reference water amount). -20L or the like) is poured into the empty bathtub 2 (step S31). In the hot water operation, the hot water supply controller 16a1 can pour hot water of a desired amount of water into the bathtub 2 by controlling the valve opening time of the electromagnetic valve 28. Then, the hot water supply part control part 16a1 performs the residual water check of the bathtub 2 using the circulation circuit 2W (step S32).

  When it is determined that there is no remaining water (No in step S32), the hot water supply controller 16a1 uses the hot water filling circuit 2Y to pour water up to the reference water amount (step S33), and uses the circulation circuit 2W. Residual water check is performed again (step S34).

  When it is determined that there is no remaining water (No in step S34), the hot water supply controller 16a1 uses the hot water filling circuit 2Y to pour a predetermined amount of water (for example, 20% of the reference water amount, 20L, etc.). In step S35, the water amount data is corrected (step S36). More specifically, in step S36, a value obtained by adding a predetermined water amount to the reference water amount is stored in the storage unit 16b as a new reference water amount. After execution of step S36, the flow returns to step S34. The additional amount of pouring in step S35 may be configured to decrease after the second time. For example, when the first pouring amount is 20% of the reference water amount, the second and subsequent pouring amounts (per time) can be 10% of the initial reference water amount. Moreover, when the amount of pouring for the first time (per time) is 20 L, the amount of pouring for the second and subsequent times can be set to 10 L.

  On the other hand, when it is determined in step S32 that there is residual water (Yes in step S32), the hot water supply unit control unit 16a1 corrects the water amount data (step S37). More specifically, in step S37, a hot water supply amount smaller than the poured reference water amount is stored in the storage unit 16b as a new reference water amount.

  In the case of Yes in step S34 and after execution of step S37, the hot water supply controller 16a1 acquires the water level of the bath water stretched on the bathtub 2 detected by the water level sensor 57, and uses the acquired water level as a reference. The water level is determined (step S38) and stored in the storage unit 16b (step S39). Subsequently, the hot water supply control unit 16a1 uses the hot water filling circuit 2Y to pour water to a preset water level at the end of the hot water filling (step S40), and finishes the first hot water filling operation after the water heater S is installed. To do. The water level at the end of filling in step S40 is determined together with the reference water amount in step S22, for example, and stored in the storage unit 16b in step S23. As the water level at the end of the hot water filling, for example, one level of the water level at the end of the hot water filling can be set to + 20L, and a plurality of water levels can be set.

Since the water heater S according to the embodiment of the present invention determines the reference water amount based on the shape data of the bathtub 2, the number of detections when determining the reference water level of the boiling water poured into the bathtub 2 is reduced to the initial value. Setting, that is, correction of the reference water amount and determination of the reference water level can be performed in a short time.
In addition, since the water heater S starts with an amount smaller than the reference water amount when determining the reference water level, even if the determined reference water amount is actually too large, the reference water amount is suitably corrected and the reference water amount is determined. The water level can be determined.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, In the range which does not deviate from the summary of this invention, it can change suitably. For example, it may be configured that the hot water supply controller 16a1 pours the reference water amount in step S31 by determining the initial reference water amount to be a small amount in advance. The data processing unit 45a1 may be configured to calculate the volume of the bathtub 2 based on the input content and transmit the calculated volume to the remote control 16. As a modification, the data processing unit 45a1 determines the reference water amount and determines the remote control. 16 may be transmitted.

2 Bathtub (storage tank)
2W Circulation circuit 5 Tank unit (water supply section, hot water supply section)
8 Heat pump unit (water supply section, hot water supply section)
16 Controller (control device)
45 Remote control (operation terminal)
57 Water level sensor (detection unit)
S water heater

Claims (6)

A water supply unit for supplying water to the storage tank;
An operation terminal for transmitting the shape data of the storage tank designated in accordance with an operation by a user;
Based on the shape data of the storage tank transmitted from the operation terminal, the reference amount of the water supplied to the storage tank is determined, and the water of the determined reference amount is controlled by controlling the water supply unit. A control device for supplying to the storage tank;
A water heater characterized by comprising. A water supply unit for supplying water to the storage tank;
A control device for supplying the water to the storage tank by controlling the water supply unit;
An operation terminal for determining a reference amount of the water to be supplied to the storage tank based on the shape data of the storage tank specified in accordance with an operation by a user, and transmitting to the control device;
A water heater characterized by comprising. The water supply unit includes a detection unit that detects a water level of the water supplied to the storage tank,
The water heater according to claim 1 or 2, wherein the control device sets a reference water level to be supplied to the storage tank based on the detected water level. The water supply unit includes a circulation circuit connected to the storage tank via the supply port,
The detection unit is capable of detecting the water level supplied to the storage tank at a position higher than the supply port,
The control device controls the water supply unit to supply an amount of the water smaller than the reference amount to the storage tank, and subsequently performs an operation of circulating the water in the circulation circuit. When the water circulates, the small amount described above is reset to the reference amount, and the water level detected in the state where the reset reference amount is supplied to the bathtub is set as the reference water level. The water heater according to claim 3, wherein the water heater is set. The water supply unit includes a circulation circuit connected to the storage tank via the supply port,
The control device controls the water supply unit to supply the reference amount of the water to the storage tank, and subsequently performs an operation of circulating the water in the circulation circuit, and the water is supplied to the circulation circuit. 4. The water heater according to claim 3, wherein when circulating, the water level detected in a state where the reference amount is supplied to the storage tank is set as the reference water level. 5. An operation of circulating the water in the circulation circuit, and supplying an additional amount of the water to the storage tank and circulating the water in the circulation circuit when the water does not circulate in the circulation circuit. The water heater according to claim 4 or 5, wherein the water is circulated until the reference amount is reset.

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