CN111322754A - Hot water supply device - Google Patents
Hot water supply device Download PDFInfo
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- CN111322754A CN111322754A CN201911279679.1A CN201911279679A CN111322754A CN 111322754 A CN111322754 A CN 111322754A CN 201911279679 A CN201911279679 A CN 201911279679A CN 111322754 A CN111322754 A CN 111322754A
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- China
- Prior art keywords
- remote controller
- unit
- communication unit
- power supply
- communication
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/107—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using fluid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
Abstract
The invention provides a hot water supply device which can prevent useless power consumption under the condition that a remote controller is not arranged. A hot water supply device (10) is provided with: a water heater; an operation unit (operation panel 12) provided in the water heater; a 1 st communication unit (111) which is provided in the water heater and communicates with the operation unit by a 1 st communication method; a 2 nd communication unit (112) provided in the water heater and configured to communicate with a remote controller (13) by a 2 nd communication method different from the 1 st communication method; and a power supply switching unit (115) that switches the presence or absence of power supply to the 2 nd communication unit (112).
Description
Technical Field
The present invention relates to a hot water supply device for supplying hot water to a faucet, a bathtub, a faucet, or the like.
Background
In the hot water supply apparatus, various settings such as a temperature of hot water and a temperature of a bath are performed by an operation from a user. For the setting, for example, a remote controller installed at a place remote from the water heater may be used. Chinese patent application publication No. 101446445 discloses a hot water supply device capable of controlling a water heater by a remote controller installed on a wall surface of a bathroom, a toilet, or a kitchen.
In some types of hot water supply devices in which a water heater is installed in a building, an operation unit for performing various settings may be provided in a water heater main body. In this configuration, since the distance between the operation unit and the water heater is extremely short, communication between the operation unit and the control unit on the water heater side can be performed using, for example, a pulse signal in which the signal level is switched between a high level and a low level. On the other hand, when the remote controller is provided, the distance between the remote controller and the water heater is long, and therefore communication between the remote controller and the control unit on the water heater side can be performed using, for example, a Sin wave (sine wave) signal. In this way, the hot water supply device in which the operation unit is provided in the water heater main body is provided with two communication units having different communication methods.
On the other hand, in such a hot water supply apparatus, since all functions can be set by the operation unit provided in the water heater main body, it is not necessary to provide a remote controller. That is, in such a hot water supply apparatus, the user can appropriately determine whether or not the remote controller needs to be installed. However, in such a hot water supply apparatus, since the two types of communication units are provided in advance as described above, even when the remote controller is not provided, the power supply is supplied to the communication unit for the remote controller. Therefore, when the remote controller is not provided, the communication unit consumes unnecessary power.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a hot water supply apparatus capable of preventing wasteful power consumption without providing a remote controller.
The hot water supply device according to the main aspect of the present invention includes: a water heater; an operation unit provided in the water heater; a 1 st communication unit provided in the water heater and communicating with the operation unit by a 1 st communication method; a 2 nd communication unit provided in the water heater and configured to communicate with a remote controller by a 2 nd communication method different from the 1 st communication method; and a power supply switching unit that switches whether or not power is supplied to the 2 nd communication unit.
According to the hot water supply apparatus of the present aspect, when the remote controller is not provided, the power supply to the 2 nd communication unit can be cut off by the power switching unit. Therefore, wasteful power consumption by the 2 nd communication unit can be prevented.
The hot water supply apparatus according to this aspect may include a control unit that controls the power supply switching unit. In this case, the control unit may be configured to: and a power switching unit configured to determine whether or not the remote controller is connected to the water heater, and to cut off power supply to the 2 nd communication unit when the remote controller is determined not to be connected to the water heater.
According to this configuration, when the remote controller is not provided, the control unit can automatically cut off the power supply to the 2 nd communication unit. Therefore, wasteful power consumption by the 2 nd communication unit can be reliably prevented.
In this case, the control unit may be configured to: and a controller configured to determine whether or not the remote controller is connected to the water heater based on whether or not a signal is received via the 2 nd communication unit in a state where power is supplied to the 2 nd communication unit by the power switching unit.
With this configuration, the presence or absence of connection of the remote controller can be smoothly determined based on the communication state of the 2 nd communication unit.
For example, the control unit may be configured to perform communication via the 2 nd communication unit in a state where power is supplied to the 2 nd communication unit by the power supply switching unit, and determine whether or not the remote controller is connected to the water heater based on whether or not a response to the communication is received via the 2 nd communication unit.
With this configuration, the presence or absence of connection of the remote controller can be actively confirmed by the control unit. Therefore, the presence or absence of connection of the remote controller can be determined quickly.
In this case, the control unit may be configured to: the determination is made based on the fact that power is supplied to the water heater.
By performing the determination at the time of power supply in this way, wasteful power consumption after power supply can be more quickly suppressed. In addition, by performing the determination with the supply of power as a trigger, the operator can have an incentive to turn on the power supply after the remote controller is connected in a state where the power supply to the water heater is cut off. Therefore, the safety of the remote controller during connection can be improved.
In the hot water supply apparatus according to the present aspect, the control unit may be configured to: after the power supply to the remote controller is started, whether the remote controller is connected to the water heater is determined based on whether a signal is received from the remote controller within a certain period.
With this configuration, the presence or absence of connection of the remote controller can be confirmed after a predetermined period of time has elapsed from the start of power supply. For example, when the remote controller is programmed to transmit a signal to the 2 nd communication unit in response to power supply, whether or not the remote controller is connected can be determined based on whether or not the 2 nd communication unit receives the signal via the 2 nd communication unit within a certain period after the power supply is started.
The hot water supply apparatus according to this aspect may include a selector switch that is switched depending on whether or not the remote controller is connected, and a switch detection unit that detects an operation of the selector switch. Here, the power supply switching unit may be configured to: and a power supply to the 2 nd communication unit is cut off based on the switching of the switch to a state indicating that the remote controller is not connected.
According to this configuration, when the remote controller is not connected, the operator can cut off the power supply to the 2 nd communication unit by operating the changeover switch.
In the hot water supply device according to the present aspect, the control unit may be configured to: the information shared with the remote controller is periodically transmitted via the 2 nd communication unit, and the supply of power to the 2 nd communication unit is cut off based on a case where a response to the information is not received via the 2 nd communication unit.
With this configuration, the presence or absence of connection of the remote controller can be smoothly determined using information periodically transmitted and received after the power is turned on. Further, even when the remote controller is disconnected from the remote controller due to a cable or a failure in the connection state after the connection, the supply of power to the 2 nd communication unit can be cut off.
In the case where a plurality of power supply lines are connected to the 2 nd communication unit, a power supply switching unit is preferably provided in each power supply line. Thus, when the remote controller is not connected, the power supply to all of the 2 nd communication unit can be cut off, and wasteful power consumption in the 2 nd communication unit can be more effectively prevented.
In the hot water supply device according to the present aspect, the 2 nd communication unit may be configured to communicate with the remote controller by superimposing a communication signal on a dc voltage to be supplied to the remote controller.
According to this configuration, when the remote controller is not connected, not only the voltage for the communication process but also the dc voltage for supplying to the remote controller is cut off from the 2 nd communication unit. Therefore, wasteful power consumption in the hot water supply device can be more effectively prevented.
As described above, according to the present invention, it is possible to provide a hot water supply apparatus capable of preventing wasteful power consumption when a remote controller is not provided.
The effects and significance of the present invention will be further clarified by the following description of the embodiments. However, the embodiments described below are merely examples for carrying out the present invention, and the present invention is not limited to the contents described in the embodiments below.
Drawings
Fig. 1 is a diagram showing a configuration of a hot water supply apparatus according to an embodiment.
Fig. 2 is a diagram showing a circuit block of the hot water supply apparatus according to the embodiment.
Fig. 3 is a diagram showing an example of a specific circuit configuration of the power supply switching unit according to the embodiment.
Fig. 4(a) is a flowchart showing a power supply switching process executed when the power supply according to the embodiment is turned on. Fig. 4(b) is a flowchart showing the power supply switching process using the state information according to the embodiment.
Fig. 5 is a flowchart showing a power supply switching process at the time of power supply on according to modification 1.
Fig. 6 is a diagram showing an example of a specific circuit configuration of the power supply switching unit according to modification 2.
Fig. 7 is a diagram showing an example of a specific circuit configuration of the power supply switching unit according to modification 3.
The drawings are for illustrative purposes only and do not limit the scope of the present invention.
-description of symbols-
10 hot water supply device
11 water heater
12 operating panel (operating part)
13 remote controller
110 control part
111 st communication part
112 2 nd communication part
115 power supply switching part
121. 122 switch
130 change-over switch
131 switch the detection part.
Detailed Description
Fig. 1 is a diagram showing a configuration of a hot water supply apparatus 10 according to an embodiment. Fig. 1 shows a configuration in which a remote controller 13 is connected to the water heater 11.
As shown in fig. 1, the hot water supply apparatus 10 includes a water heater 11 and an operation panel 12. The water heater 11 is a gas water heater that supplies hot water using gas as fuel. Hot water generated by the water heater 11 is supplied to a faucet, a bathtub, a faucet, and the like in a kitchen through pipes connected to the hot water supply ports 11a, respectively. When the water heater 11 has a floor heating function, a bathroom heating function, and a heating function of a panel heater, hot water is supplied from the water heater 11 to devices that realize these functions.
A circuit board 11b is provided inside the water heater 11, and a circuit unit for driving and controlling the water heater 11 is provided on the circuit board 11 b. For example, the circuit unit controls an intake fan that supplies air to the burner, or controls an electromagnetic valve that adjusts the supply amount of gas to the burner.
The water heater 11 is disposed inside a building. For example, a water heater 11 is provided on a wall surface of a kitchen. The exhaust gas from the water heater 11 is discharged to the outside of the building via the duct 11 c. An operation panel 12 is disposed on a lower portion of the front surface of water heater 11. The operation panel 12 includes a display unit 12a and an input unit 12 b. The operator can arbitrarily set hot water filling, hot water supply temperature adjustment, and the like by operating the input unit 12b while referring to the screen displayed on the display unit 12 a. The user can set all the functions of the hot water supply apparatus 10 by operating the operation panel 12. The operation panel 12 constitutes an operation unit of the hot water supply apparatus 10.
A remote controller (hereinafter, referred to as "remote controller") 13 can be connected to the water heater 11. The remote controller 13 is arbitrarily set by a user of the hot water supply apparatus 10. That is, the user arbitrarily decides whether or not to set the remote controller 13. When the remote controller 13 is not provided, the operation of the hot water supply apparatus 10 is performed only by using the operation panel 12. The remote controller 13 is connected to the circuit board 11b of the water heater 11 by a cable (e.g., a two-wire communication line) L10. The cable L10 is used for power supply to the remote controller 13 in addition to communication.
The remote controller 13 includes a display unit 13a and an input unit 13 b. The operator can arbitrarily set hot water filling, hot water supply temperature adjustment, and the like by operating the input unit 13b while referring to the screen displayed on the display unit 13 a. The remote controller 13 is provided in a bathroom, a living room, or the like.
Fig. 2 is a diagram showing a circuit block of the hot water supply apparatus 10. Fig. 2 shows a configuration in which the remote controller 13 is connected to the circuit board 11b of the water heater 11.
The control unit 110, the 1 st communication unit 111, the 2 nd communication unit 112, the power generation unit 113, the regulator 114, and the power switching unit 115 are disposed on the circuit board 11b of the water heater 11.
The control unit 110 includes a cpu (central Processing unit) and a memory, and controls each unit in the water heater 11 according to a program stored in the memory.
The 1 st communication unit 111 communicates with the operation panel 12 under the control of the control unit 110. The 1 st communication unit 111 is connected to the operation panel 12 via a cable L20. The 1 st communication unit 111 communicates with the operation panel 12 using a pulse signal whose signal level is switched between a high level and a low level.
The 2 nd communication unit 112 communicates with the remote controller 13 according to the control from the control unit 110. The 2 nd communication unit 112 is connected to the remote controller 13 via a cable L20. The 2 nd communication unit 112 supplies power to the remote controller 13 via the cable L10. The 2 nd communication unit 112 superimposes the Sin wave signal on the voltage supplied to the remote controller 13 and communicates with the remote controller 13.
The 2 nd communication unit 112 includes a communication processing unit 112a and a communication interface 112 b. The communication processing unit 112a processes signals transmitted and received to and from the remote controller 13. The communication interface 112b outputs the signal input from the communication processing section 112a to the cable L10 superimposed on the power supply voltage, and extracts the signal input via the cable L10 from the power supply voltage and outputs to the communication processing section 112 a.
The power supply generation unit 113 generates a dc voltage from an ac voltage supplied from a commercial power supply, and supplies the dc voltage to a corresponding circuit portion of the circuit board 11b, a fan of the water heater 11, and the like. For example, the power supply generation unit 113 generates a power supply voltage of 15 volts dc and supplies the generated voltage to the regulator 114 and the communication interface 112 b. The power generation unit 113 is constituted by, for example, a switching power supply.
The regulator 114 generates a constant voltage from the power supply voltage supplied from the power supply generation unit 113, and supplies the constant voltage to the control unit 110, the 1 st communication unit 111, and the communication processing unit 112 a. The voltage regulator 114 generates a voltage of, for example, 5 volts dc. Instead of the voltage regulator 114, a constant voltage circuit of another structure may be used.
The power supply switching unit 115 switches whether or not the power supply voltage is supplied from the power supply generation unit 113 and the regulator 114 to the 2 nd communication unit 112. The power supply switching unit 115 includes two switches 121 and 122. The switch 121 is provided on a power supply line from the power generation unit 113 to the communication interface 112b, and the switch 122 is provided on a power supply line from the regulator 114 to the communication processing unit 112 a. The switches 121 and 122 are constituted by a switch circuit using an fet (field Effect transistor), a relay, and the like. The switches 121 and 122 are controlled to be opened and closed by the control unit 110.
Fig. 3 is a diagram showing an example of a specific circuit configuration of the power supply switching unit 115.
In this configuration example, the switch 121 is formed of a switch circuit in which two FETs 121a, 121b are combined, and the switch 122 is formed of a switch circuit in which two FETs 122a, 122b are combined. The source of FET121a is supplied with the dc voltage (5 v) from regulator 114, and the source of FET122a is supplied with the dc voltage (15 v) from power supply generation unit 113.
The control unit 110 supplies a voltage to the gates of the FETs 121b and 122b, and the FETs 121a and 121b and the FETs 122a and 122b are set to be on, thereby supplying a dc voltage (5 volts or 12 volts) to the 2 nd communication unit 112. Thus, a voltage of 5 volts dc is supplied to the communication processing unit 112a, and a voltage of 15 volts dc is supplied to the communication interface 112 b. When the supply of voltage to the gates of the FETs 121b, 122b is stopped, the switches 121, 122 are turned off, and the supply of voltage to the communication processing unit 112a and the communication interface 112b is cut off. In this way, the control unit 110 controls whether or not to supply the power supply voltage to the communication processing unit 112a and the communication interface 112 b. The cable L10 is connected to the communication port 112 c.
However, in the hot water supply apparatus 10 having the above configuration, since all functions can be set by the operation panel 12 provided in the hot water heater 11, the remote controller 13 may not necessarily be provided. That is, in the hot water supply apparatus 10 having the above configuration, the user can appropriately determine whether or not the remote controller 13 needs to be installed. In contrast, in the hot water supply apparatus 10, as described above, the 2 nd communication unit 112 is provided in advance in addition to the 1 st communication unit 111. Therefore, when the remote controller 13 is not provided and the 2 nd communication unit 112 is in a power supply state, the 2 nd communication unit 112 consumes unnecessary power.
In order to solve this problem, in the present embodiment, the power supply switching unit 115 (switches 121 and 122) is disposed. In the present embodiment, when the remote controller 13 is not provided, the control unit 110 determines this and performs control to cut off the supply of the power supply voltage to the 2 nd communication unit 112. This control will be explained below.
Fig. 4(a) is a flowchart showing a power supply switching process executed when the power supply is turned on.
After the hot water supply apparatus 10 is installed, when the power supply is turned on to the hot water supply apparatus 10 (yes in S11), the controller 110 closes the switches 121 and 122 to turn on the power supply line to the 2 nd communication unit 112 and supplies power to the 2 nd communication unit 112 (S12). Then, the control unit 110 transmits a confirmation notification to the remote controller 13 via the 2 nd communication unit 112 (S13).
Here, when the remote controller 13 is provided, a response to the confirmation notification is transmitted from the remote controller 13 to the 2 nd communication unit 112, and the response is received by the 2 nd communication unit 112. On the other hand, when the remote controller 13 is not provided, the response to the confirmation notification is not received through the 2 nd communication unit 112.
The control unit 110 determines whether or not a response to the confirmation notification is received via the 2 nd communication unit 112 (S14). If no response is received (yes in S14), the controller 110 determines that the remote controller 13 is not installed and turns on the switches 121 and 122 (S15). Thereby, the power supply line to the 2 nd communication unit 112 is cut off, and the supply of power to the 2 nd communication unit 112 is cut off.
On the other hand, when the response is received (no in S14), the control unit 110 determines that the remote controller 13 is installed and ends the process without turning on the switches 121 and 122. Thereby, the power supply line to the 2 nd communication unit 112 is maintained in the on state, and the power is continuously supplied to the 2 nd communication unit 112.
Fig. 4(b) is a flowchart showing a process of cutting off the power supply to the 2 nd communication unit 112 using the state information after determining that the remote controller 13 is installed and supplying power to the 2 nd communication unit 112.
After resetting the variable K to 0 (S21), the control unit 110 determines whether or not to transmit the status information to the remote controller 13 (S22).
Here, the status information is information indicating the current setting status of the hot water supply apparatus 10. The status information is periodically (for example, every 5 seconds) transmitted from the control unit 110 of the water heater 11 to the operation panel 12 and the remote controller 13, and is shared among the control unit 110, the operation panel 12, and the remote controller 13. When the status information is transmitted from the control unit 110 to the operation panel 12 and the remote controller 13, whether or not the status information matches the status information held by the operation panel 12 and the remote controller 13 is checked, and a response including the check result and the status information held by the operation panel 12 and the remote controller 13 is transmitted to the control unit 110.
After transmitting the status information (S22), the control unit 110 determines whether or not a response to the status information is received from the remote controller 13 (S23). When a response is received from the remote controller 13 (yes in S23), the control unit 110 ends the process. Thereafter, the control unit 110 returns the process to step S21 and executes the same process.
On the other hand, when no response is received from the remote controller 13 (no in S23), the control unit 110 adds 1 to the variable K (S24) and determines whether or not the value of the variable K exceeds the threshold Kth (S25). The threshold Kth is set to about 10 to 20, for example. If the variable K does not exceed the threshold Kth (no in S25), the control unit 110 returns the process to step S22 and repeats the same process. When the number of times of continuously receiving the response to the state information exceeds the threshold Kth (S25: yes), the control unit 110 determines that the connection of the remote controller 13 is disconnected due to some trouble, and opens the switches 121 and 122 (S26). Thereby, the power supply line to the 2 nd communication unit 112 is cut off, and the supply of power to the 2 nd communication unit 112 is cut off. In this way, the control unit 110 ends the process.
In step S26, the control unit 110 may cause the display unit 12a of the operation panel 12 to display information indicating that the connection of the remote controller 13 is disconnected. This enables the user to grasp disconnection of the remote controller 13 and take necessary measures.
< effects of the embodiment >
According to the present embodiment, the following effects can be obtained.
When the remote controller 13 is not provided, the power switching unit 115 is controlled by the process shown in fig. 4(a) to cut off the supply of power to the 2 nd communication unit 112. This can prevent wasteful power consumption by the 2 nd communication unit 112.
In the case where the remote controller 13 is not provided, the control unit automatically cuts off the supply of power to the 2 nd communication unit 112 through the processing of fig. 4 (a). This can reliably prevent wasteful power consumption by the 2 nd communication unit 112.
Here, the control unit 110 determines whether or not the remote controller 13 is connected, based on whether or not a signal is received via the 2 nd communication unit 112, in a state where power is supplied to the 2 nd communication unit 112 by the power switching unit 115 (step S12). More specifically, the controller 110 transmits a confirmation notification via the 2 nd communicator 112 (S13), and determines whether or not the remote controller 13 is connected based on whether or not a response to the notification is received via the 2 nd communicator 112 (S14). In this way, by actively confirming the presence or absence of connection of the remote controller 13 from the control unit 110, it is possible to quickly and smoothly determine the presence or absence of connection of the remote controller 13. Therefore, when the remote controller 13 is not connected, wasteful power supply to the 2 nd communication unit 112 can be suppressed immediately after the power is turned on.
As shown in fig. 4 a, the control unit 110 determines whether or not the remote controller 13 is connected, based on the supply of power to the water heater 11 (S11). By determining whether or not the remote controller 13 is connected during power supply in this way, wasteful power consumption after power supply can be suppressed more quickly. In addition, by determining with the supply of power as a trigger in this way, the operator can have an incentive to turn on the power after the remote controller 13 is connected in a state where the supply of power to the water heater 11 is cut off. Therefore, the security when the remote controller 13 is connected can be improved.
As shown in fig. 4 b, the control unit 110 periodically transmits information (status information) shared with the remote controller 13 via the 2 nd communication unit 112, and cuts off the supply of power to the 2 nd communication unit 112 based on the failure to receive a response to the information via the 2 nd communication unit 112. Thus, even when the remote controller 13 is disconnected from the remote controller 13 due to a failure in the cable L10 or the connection state after the remote controller 13 is connected, the supply of power to the 2 nd communication unit 112 can be cut off. Further, since the presence or absence of connection of the remote controller is determined using the periodically transmitted and received information, the presence or absence of connection of the remote controller 13 can be smoothly determined.
In the present embodiment, the 2 nd communication unit 112 is configured to superimpose a communication signal on a dc voltage to be supplied to the remote controller 13 and to communicate with the remote controller 13. Therefore, when the remote controller 13 is not connected, not only the voltage for communication processing supplied from the regulator 114 but also the dc voltage for supplying to the remote controller 13 generated by the power supply generation unit 113 is cut off from the 2 nd communication unit 112. Therefore, wasteful power consumption in the hot water supply device 10 can be more effectively prevented.
< modification example 1>
In the above embodiment, the control unit 110 transmits the confirmation notification through the 2 nd communication unit 112 to determine whether or not the remote controller 13 is connected, but in the case where the remote controller 13 is configured by transmitting a predetermined signal from the remote controller 13 to the 2 nd communication unit 112 in response to the start of the power supply to the remote controller 13, the presence or absence of the connection of the remote controller 13 may be determined based on the presence or absence of the signal. Hereinafter, the signal transmitted from the remote controller 13 in response to the supply of the power is referred to as a "signal at the time of power-on".
Fig. 5 is a flowchart showing a power supply switching process according to modification 1.
In the flowchart of fig. 5, steps S13 to S15 in fig. 4(a) are changed to steps S16 to 18.
After the hot water supply apparatus 10 is installed, when the power supply is turned on to the hot water supply apparatus 10 (yes in S11), the controller 110 closes the switches 121 and 122 to turn on the power supply line to the 2 nd communication unit 112 and supplies power to the 2 nd communication unit 112 (S12). When the remote controller 13 is connected, the power is supplied to the remote controller 13 via the 2 nd communication unit 112 by the power supply to the 2 nd communication unit 112.
Then, the control unit 110 determines whether or not a signal at the time of power-on is received from the remote controller 13 via the 2 nd communication unit 112 before the predetermined time elapses (S17) (S16). Here, the predetermined time is set to be slightly longer than the time expected from the supply of power to the 2 nd communication unit 112 until the reception of the signal at the time of power-on.
When the power-on signal is received (S16: yes) until the predetermined time elapses (no in S17), control unit 110 ends the process with power being turned on to second communication unit 112. On the other hand, when the state in which the signal at the time of power-on is not received continues for the predetermined time (no in S16, yes in S17), the controller 110 turns on the switches 121 and 122 to cut off the power supply line to the 2 nd communication unit 112 (S18), thereby cutting off the supply of power to the 2 nd communication unit 112.
According to this modification, the same effects as those of the above embodiment can be obtained. Even when the power is turned on, the control unit 110 does not particularly transmit the confirmation notification, and whether or not the remote controller 13 is connected can be determined based on whether or not a predetermined signal (signal at the time of power-on) is received via the 2 nd communication unit 112 within a certain period of time from the start of power supply to the 2 nd communication unit 112. Therefore, the presence or absence of connection of the remote controller 13 can be determined by a simpler process.
< modification example 2>
In the above-described embodiment and modification 1, the presence or absence of connection of the remote controller 13 is determined by communication via the 2 nd communication unit 112, and the power supply switching unit 115 (switches 121 and 122) is controlled, but in modification 2, the power supply switching unit 115 (switches 121 and 122) is switched by manual operation of the operator.
Fig. 6 is a diagram showing an example of a specific circuit configuration of the power supply switching unit 115 according to modification example 2.
Here, a selector switch 130 that is manually operated by an operator and a switch detection unit 131 that detects the state of the selector switch 130 are provided.
The selector switch 130 is disposed inside the water heater 11, for example. The changeover switch 130 is a switch capable of selectively changing over to the 1 st state and the 2 nd state. The 1 st state is a state selected when the remote controller 13 is provided, and the 2 nd state is a state selected when the remote controller 13 is not provided. As the changeover switch 130, a push button switch that can be selectively displaced to the pushed-in position and the projected position, a lever switch that can cause a lever to fall down to two positions, or the like can be used.
The switch detection unit 131 detects whether the changeover switch 130 is in the 1 st state or the 2 nd state, and outputs a detection signal to the control unit 110.
After the hot water supply device 10 is installed, the operator turns on the power supply to the water heater 11, and sets the changeover switch 130 to either the 1 st state or the 2 nd state depending on whether or not the remote controller 13 is installed. Accordingly, a detection signal indicating the state of the changeover switch 130 is output from the switch detection unit 131 to the control unit 110.
When the detection signal indicates the 1 st state, the control unit 110 supplies a voltage to the gates of the FETs 121b, 122b to close the switches 121, 122. Thereby, the power supply voltage is supplied to the 2 nd communication unit 112. On the other hand, when the detection signal indicates the 2 nd state, the control unit 110 does not supply a voltage to the gates of the FETs 121b, 122b, and maintains the switches 121, 122 in the on state. This cuts off the supply of the power supply voltage to the 2 nd communication unit 112.
According to the configuration of modification 2, when the remote controller 13 is not connected, the operator can cut off the supply of power to the 2 nd communication unit 112 by operating the changeover switch 130.
In the configuration of modification 2, since the operation of the changeover switch 130 is required, when the operator erroneously operates the changeover switch 130, the power supply to the 2 nd communication unit 112 may be in an inappropriate state. Therefore, in order to more reliably cut off the unnecessary power supply to the 2 nd communication unit 112, it is preferable that the control unit 110 automatically determine whether or not the remote controller 13 is connected and control the power supply switching unit 115, as in the above-described embodiment and modification 1.
< modification example 3>
In modification 2 described above, the control unit 110 controls the power supply switching unit 115 (switches 121 and 122) based on the detection result of the switch detection unit 131, but the detection signal from the switch detection unit 131 may be directly input to the power supply switching unit 115 (switches 121 and 122) to switch the power supply switching unit 115 (switches 121 and 122).
Fig. 7 is a diagram showing an example of a specific circuit configuration of the power supply switching unit 115 according to modification 3.
In this configuration example, the detection signal of the switching detection unit 131 is input to the gates of the FETs 121b, 122 b. When the changeover switch 130 is in the 1 st state, the switch detection unit 131 outputs a detection signal of a voltage level (high level) at which the FETs 121b, 122b can be operated. When the changeover switch 130 is in the 2 nd state, the switch detection section 131 sets the detection signal to a zero level (low level).
According to the configuration of modification 3, when the remote controller 13 is not connected, the operator can cut off the supply of power to the 2 nd communication unit 112 by operating the changeover switch 130.
In the case where the switches 121 and 122 are mechanical switches, a switching mechanism for mechanically switching the switches 121 and 122 on/off in accordance with the state of the selector switch 130 may be provided. According to this configuration, when the remote controller 13 is not connected, the operator can cut off the supply of power to the 2 nd communication unit 112 by operating the changeover switch 130.
< other modifications >
In the above embodiment, two power supply lines, that is, the 5-volt supply power supply line and the 15-volt supply power supply line, are connected to the 2 nd communication unit 112, but the number of power supply lines connected to the 2 nd communication unit 112 is not limited to this. For example, only a power supply line for 15 volt supply may be connected to the 2 nd communication unit 112, and a constant voltage circuit for generating a dc voltage of 5 volts from the dc voltage of 15 volts may be arranged in the 2 nd communication unit 112. In this case, a switch for cutting off the power supply may be provided on the 15 v power supply line connected to the 2 nd communication unit 112.
The dc voltage to be supplied to the 2 nd communication unit 112 is not limited to 5 volts and 15 volts, and may be other voltages. The communication method of the 1 st communication unit 111 and the 2 nd communication unit 112 is not limited to the communication method described in the above embodiment, and may be another communication method. The number of the operation panels (operation units) disposed in the water heater 11 is not necessarily one, and may be plural. The number of connectable remote controllers is not limited to 1, and may be plural.
The hot water supply device 10 may be a hot water supply device having another configuration, such as a heat storage type hot water supply device having a hot water storage tank, a hot water supply device having a power generation function of a fuel cell, or a hot water supply device using oil as fuel.
The embodiments of the present invention can be modified in various ways as appropriate within the scope of the claims.
Claims (10)
1. A hot water supply device is characterized by comprising:
a water heater;
an operation unit provided in the water heater;
a 1 st communication unit provided in the water heater and communicating with the operation unit by a 1 st communication method;
a 2 nd communication unit provided in the water heater and configured to communicate with a remote controller by a 2 nd communication method, wherein the 2 nd communication method is different from the 1 st communication method; and
and a power switching unit configured to switch whether or not power is supplied to the 2 nd communication unit.
2. The hot water supply apparatus according to claim 1,
the hot water supply device is provided with a control part for controlling the power supply switching part,
the control unit determines whether or not the remote controller is connected to the water heater, and when the control unit determines that the remote controller is not connected to the water heater, the control unit cuts off the power supply to the 2 nd communication unit by the power supply switching unit.
3. The hot water supply apparatus according to claim 2,
the control unit determines whether or not the remote controller is connected to the water heater based on whether or not a signal is received via the 2 nd communication unit in a state where the power supply is supplied to the 2 nd communication unit by the power supply switching unit.
4. The hot water supply apparatus according to claim 3,
the control unit performs communication via the 2 nd communication unit in a state where power is supplied to the 2 nd communication unit by the power supply switching unit, and determines whether or not the remote controller is connected to the water heater based on whether or not a response to the communication is received via the 2 nd communication unit.
5. The hot water supply apparatus according to claim 2,
the control unit performs the determination based on the fact that power is supplied to the water heater.
6. The hot water supply apparatus according to claim 3,
the control unit determines whether or not the remote controller is connected to the water heater based on whether or not a signal is received from the remote controller for a predetermined period after the supply of power to the remote controller is started.
7. The hot water supply apparatus according to claim 1,
the hot water supply device comprises:
a switch that is switched depending on whether or not the remote controller is connected; and
a switch detection unit that detects an operation of the changeover switch,
the power supply switching unit cuts off the supply of power to the 2 nd communication unit based on a state in which the changeover switch is switched to indicate that the remote controller is not connected.
8. The hot water supply apparatus according to claim 2, comprising:
the control unit periodically transmits information shared with the remote controller via the 2 nd communication unit, and cuts off the supply of power to the 2 nd communication unit based on a case where a response to the information is not received via the 2 nd communication unit.
9. The hot water supply apparatus according to any one of claims 1 to 8,
a plurality of power supply lines are connected to the 2 nd communication unit,
the power supply switching unit is provided in each of the power supply lines.
10. The hot water supply apparatus according to any one of claims 1 to 8,
the 2 nd communication unit performs communication with the remote controller by superimposing a communication signal on a direct-current voltage to be supplied to the remote controller.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-234953 | 2018-12-14 | ||
| JP2018234953A JP7255158B2 (en) | 2018-12-14 | 2018-12-14 | water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111322754A true CN111322754A (en) | 2020-06-23 |
Family
ID=71084817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911279679.1A Withdrawn CN111322754A (en) | 2018-12-14 | 2019-12-12 | Hot water supply device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7255158B2 (en) |
| CN (1) | CN111322754A (en) |
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| JPH06292277A (en) * | 1993-03-31 | 1994-10-18 | Noritz Corp | Remote controller for hot water supply device |
| CN1564762A (en) * | 2002-04-12 | 2005-01-12 | 爱信艾达株式会社 | Power supply management system for vehicle mounted apparatus |
| JP2012083035A (en) * | 2010-10-12 | 2012-04-26 | Rinnai Corp | Heat source system |
| CN103124937A (en) * | 2010-09-27 | 2013-05-29 | 三菱电机株式会社 | Programmable control system |
| CN103206777A (en) * | 2012-01-17 | 2013-07-17 | 文志军 | Electronic constant-temperature pre-instant dual-mode electric water heater |
| CN103869718A (en) * | 2014-02-25 | 2014-06-18 | 朱金荣 | System device for realizing zero power consumption standby of household appliance |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001215024A (en) | 2000-02-03 | 2001-08-10 | Matsushita Electric Ind Co Ltd | Hot water heating machine |
| JP3829678B2 (en) | 2001-10-03 | 2006-10-04 | 松下電器産業株式会社 | Electric water heater operation parts |
| JP4100309B2 (en) | 2003-09-17 | 2008-06-11 | 株式会社ノーリツ | Hot water system |
| JP2008111575A (en) | 2006-10-30 | 2008-05-15 | Noritz Corp | Hot water supply combustion device |
| JP5127848B2 (en) | 2010-01-22 | 2013-01-23 | 株式会社パロマ | Water heater |
| IT1402089B1 (en) * | 2010-10-11 | 2013-08-28 | Frigoservice S N C Di Ciacchi Claudio E Antonio | MOBILE HEAT GENERATOR. |
| JP6004177B2 (en) | 2012-10-31 | 2016-10-05 | 株式会社ノーリツ | Hot water storage hot water supply system |
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2018
- 2018-12-14 JP JP2018234953A patent/JP7255158B2/en active Active
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- 2019-12-12 CN CN201911279679.1A patent/CN111322754A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06292277A (en) * | 1993-03-31 | 1994-10-18 | Noritz Corp | Remote controller for hot water supply device |
| CN1564762A (en) * | 2002-04-12 | 2005-01-12 | 爱信艾达株式会社 | Power supply management system for vehicle mounted apparatus |
| CN103124937A (en) * | 2010-09-27 | 2013-05-29 | 三菱电机株式会社 | Programmable control system |
| JP2012083035A (en) * | 2010-10-12 | 2012-04-26 | Rinnai Corp | Heat source system |
| CN103206777A (en) * | 2012-01-17 | 2013-07-17 | 文志军 | Electronic constant-temperature pre-instant dual-mode electric water heater |
| CN103869718A (en) * | 2014-02-25 | 2014-06-18 | 朱金荣 | System device for realizing zero power consumption standby of household appliance |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2020094788A (en) | 2020-06-18 |
| JP7255158B2 (en) | 2023-04-11 |
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Application publication date: 20200623 |