JP2013015284A - Storage type water heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a storage type water heater which has a plurality of hot water supply ports and can correctly determine a hot water supply port in use for hot water supply to inform a user of highly reliable hot water supply information.SOLUTION: The storage type water heater can supply hot water in a hot water storage tank 110 from a shower hot water supply port 121 and/or a kitchen hot water supply port 122 via a mixed hot water pipe 114. In addition, the storage type water heater includes a flow amount sensor 115 which is disposed in the midway of the mixed hot water pipe 114 and senses an instantaneous value for a hot water supply flow amount flowing through the mixed hot water pipe 114 during hot water supply and a remote controller 131 which is provided in the vicinity of each of the shower hot water supply port 121 and kitchen hot water supply port 122. Based on the instantaneous value during hot water supply detected by the flow amount sensor 115, the hot water supply port in use is determined. At least either a continuous hot water supply amount or a continuous hot water supply time calculated based on the instantaneous value is displayed on the remote controller 131 in the vicinity of the hot water supply port.

Description

  The present invention relates to a hot water storage type water heater, and more particularly to a hot water storage type water heater provided with a remote control.

  The following technology is disclosed as a remote controller for a water heater system. For example, in a water heater system proposed in Japanese Patent Laid-Open No. 2009-24913 (Patent Document 1), an instantaneous value of the amount of hot water used for hot water such as a shower is detected based on a detection signal of a hot water flow rate sensor. And the amount of continuous hot water supply by a shower is compared with the preset value, and an energy saving degree is judged, and it alert | reports with a hot water heater remote control. Thereby, a user can be encouraged to use energy saving.

JP 2009-24913 A

  In the above conventional configuration, since the hot water supply port (for example, a shower, a kitchen hot water supply port, etc.) directly connected to the hot water flow rate sensor branches into a plurality of parts, during continuous hot water supply from one hot water supply port Even if hot water supply is started from other hot water outlets, the same continuous hot water supply is detected. For this reason, there existed a subject that the exact continuous hot-water supply time from one hot-water supply port could not be grasped | ascertained.

  The present invention has been made to solve the above-described problems. In a hot water storage type hot water heater having a plurality of hot water outlets, it is possible to accurately determine hot water outlets during hot water supply operation and provide highly reliable hot water supply information. It is an object of the present invention to provide a hot water storage type water heater that can notify a user.

  The hot water storage type hot water heater according to the present invention has a first hot water supply port and a second hot water supply port, and the hot water in the hot water storage tank is mixed with the first hot water supply port and / or the second hot water via a mixed hot water pipe. In the hot water storage type hot water heater that can supply hot water from the hot water supply port, a detection means that is disposed in the middle of the mixed hot water pipe and detects an instantaneous value of the flow rate of hot water flowing through the mixed hot water pipe during hot water supply, the first hot water supply port and the second hot water supply port A remote controller provided in the vicinity of the hot water supply port, and the first hot water supply port and the second hot water supply port belong to different ranges of instantaneous values at the time of hot water supply, and based on the instantaneous values at the time of hot water supply A discriminating means for discriminating a hot water supply port being used from the first hot water supply port and the second hot water supply port; a continuous hot water supply amount and a continuous hot water supply from the hot water supply port specified by the discriminating means based on the instantaneous value; A computing means for computing at least one of the time and a computing means; The that calculation result, and informing means for informing the remote controller in the vicinity of the determined hot water port by discriminating means, but comprising a.

  According to the hot water storage type water heater of the present invention, in the hot water storage type water heater having a plurality of hot water outlets, the hot water storage capable of accurately determining the hot water inlet during the hot water supply operation and notifying the user of reliable hot water supply information. A water heater can be provided.

1 shows a system diagram of a hot water storage type hot water supply apparatus according to Embodiment 1 of the present invention. FIG. 1 is a control block diagram of a water heater system according to Embodiment 1 of the present invention. It is a figure which shows an example of the time change of the hot_water | molten_metal supply instantaneous value detection means detected by the hot_water | molten_metal supply flow volume instantaneous value. It is a figure which shows the other example of the time change of the hot_water | molten_metal supply instantaneous value detected by the hot-water supply use instantaneous value detection means. It is a figure which shows the flowchart of the control which concerns on Embodiment 1 of this invention. The control block diagram of the water heater system which concerns on the modification of Embodiment 1 of this invention is shown. The external view of the bathroom remote control which concerns on Embodiment 2 of this invention is shown. It is a figure which shows the flowchart of the control which concerns on Embodiment 2 of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, this invention is not limited by this embodiment.

Embodiment 1 FIG.
FIG. 1 shows a system diagram of a hot water storage type hot water supply apparatus according to Embodiment 1 of the present invention. The water heater system 100 includes a hot water storage tank 110 for storing hot water heated by an arbitrary heating method (for example, a heat pump). A water supply pipe 111 for supplying water into the hot water storage tank 110 is connected to the lower part of the hot water storage tank 110. In addition, a hot water supply pipe 112 for supplying hot water in the hot water storage tank to a hot water outlet described later is connected to the upper part of the hot water storage tank 110. The hot water supply pipe 112 is connected to a water supply bypass pipe 111a branched from the middle of the water supply pipe 111, and a mixing valve 113 is provided at the connection portion. The mixing valve 113 is further connected to a mixing hot water pipe 114, and the cold water supplied from the water supply bypass pipe 111a and the hot water supplied from the hot water supply pipe 112 are mixed to the target hot water temperature by the mixing valve 113 and mixed. Circulate to the hot water pipe 114. The mixed hot water pipe 114 is connected to a plurality of hot water outlets 120 such as a shower hot water outlet 121 and a kitchen hot water outlet 122 after branching into a plurality of parts on the way.

  A flow rate sensor 115 for detecting an instantaneous value of the hot water supply flow rate supplied from the mixing valve 113 is provided in the middle of the mixed hot water piping 114. Furthermore, hot water remote controllers 131 (a) and 131 (b) (hereinafter simply referred to as “remote controllers”) for remotely operating the water heater system 100 are installed on the wall surface in the bathtub room and the wall surface near the kitchen hot water outlet. Has been. The remote controller 131 is electrically connected to the control board 130 in the water heater system 100. Control board 130 controls various devices of hot water supply system 100 based on an input signal from remote controller 131.

  FIG. 2 shows a control block diagram of the water heater system according to Embodiment 1 of the present invention. For example, when the hot water supply port 121 is opened and hot water supply is started, the instantaneous value of the hot water supply flow rate is detected by the hot water supply use instantaneous value detecting means 141. More specifically, the instantaneous value of the hot water supply flow rate is detected based on the detection signal of the flow rate sensor 115. In addition, the control board 130 has a flow rate that flows when the shower hot water supply port 121 is used, a flow rate that flows when the kitchen hot water supply port 122 is used, and a simultaneous hot water supply flow rate that flows when two hot water supply ports are used simultaneously. The storage means 142 which memorize | stored is provided. The hot water supply type determination unit 143 determines that the shower hot water supply port 121 is being used by comparing the detection data of the hot water supply use instantaneous value detection unit 141 with the data stored in the storage unit 142. In addition, for example, when the kitchen hot water supply port 122 is opened during the hot water supply from the shower hot water supply 121 (single hot water supply) (simultaneous hot water supply), the detection data after the fluctuation of the detected flow rate of the hot water supply use instantaneous value detecting means 141 Is compared with the data stored in the storage means 142 to determine simultaneous hot water supply.

  FIG. 3 is a diagram illustrating an example of a temporal change in the hot water supply flow rate instantaneous value detected by the hot water supply use instantaneous value detection unit. The storage means 142 has a hot water supply flow rate of 8 L / min when the shower hot water supply port 121 is used, a hot water supply flow rate of 5 L / min when the kitchen hot water supply port 122 is used, and a shower hot water supply port. When 121 and the kitchen hot water supply port 122 are used simultaneously, it is stored in advance that a hot water supply flow rate of 10 L / min flows. As shown in FIG. 3, when hot water supply is started at time t0, the hot water supply use instantaneous value detecting means 141 first detects a flow rate of 8 L / min as a hot water supply flow rate instantaneous value. The hot water supply type determination unit 143 compares the instantaneous value of the hot water supply flow rate with the flow rate stored in the storage unit 141 and determines that the hot water supply type is shower hot water supply. Next, hot water supply type determination means 143 detects that the hot water supply use instantaneous value has increased to a flow rate of 10 L / min at time t1. In this case, the hot water supply type determination unit 143 compares the instantaneous value of the hot water supply flow rate with the flow rate stored in the storage unit 141, and determines that the hot water supply after the time t1 is simultaneous hot water supply of shower hot water and kitchen hot water. Further, when the instantaneous hot water use instantaneous value returns to 8 L / min again at time t2, the hot water supply type determining means 143 determines that the hot water supply type has become the single hot water supply for shower hot water, and the instantaneous hot water use instantaneous value again becomes 0 L / min at time t4. At that time, it is determined that the shower hot water outlet 121 is closed. And the display means 144 displays the continuous hot water supply time of the shower hot water from the time t0 to the time t3 on the remote control 131 (a) installed in the bathroom, and the continuous hot water supply of the kitchen hot water from the time t1 to the time t2. The time is displayed on the remote control 131 (b) installed in the kitchen.

  FIG. 4 is a diagram showing another example of the temporal change in the hot water supply flow rate instantaneous value detected by the hot water use instantaneous value detection means. As shown in FIG. 4, when hot water supply is started at time t0, first, hot water use instantaneous value detecting means 141 detects a flow rate of 8 L / min as a hot water supply flow rate instantaneous value. The hot water supply type determination unit 143 compares the instantaneous value of the hot water flow rate with the flow rate stored in the storage unit 141, and determines that the time after the time t0 is shower hot water supply. Next, hot water supply type determination means 143 detects that the hot water supply use instantaneous value has increased to a flow rate of 10 L / min at time t1. In this case, the hot water supply type determination unit 143 compares the instantaneous value of the hot water supply flow rate with the flow rate stored in the storage unit 141, and determines that the hot water supply after the time t1 is simultaneous hot water supply of shower hot water and kitchen hot water. Further, when the instantaneous value of hot water supply usage decreases to 5 L / min at time t2, hot water supply type determination means 143 determines that shower hot water supply has been stopped and kitchen hot water supply has become a single hot water supply. And the display means 144 displays the continuous hot water supply time from the time t0 to the time t2 on the remote control 131 (a) installed in the bathroom.

  FIG. 5 is a diagram showing a flowchart of control according to Embodiment 1 of the present invention. If it is determined in step S1 that hot water supply has started from an arbitrary hot water supply port, then the hot water supply type determination unit 143 determines the hot water supply port (step S2). Here, specifically, hot water supply instantaneous value detecting means 141 detects the hot water supply instantaneous value. The hot water supply type determining means 143 determines from which hot water outlet the hot water is used based on the storage means 142. For example, quoting the example of FIG. 3, when the instantaneous hot water supply value is detected as 8 L / min, it is determined that hot water is supplied from the shower hot water outlet 121 by comparison with the instantaneous hot water supply value stored in advance. Next, it is determined whether the hot water use instantaneous value has fluctuated (step S3). As a result, when it is determined that the hot water use instantaneous value has fluctuated, the process returns to step 2 again to determine the hot water supply type. At this time, for example, when the instantaneous value of hot water supply is 10 L / min, it is determined that the hot water supply port 121 and the kitchen hot water supply port 122 are in the state of simultaneous hot water supply by comparison with the instantaneous value of hot water supply stored in advance. On the other hand, if it is determined in step S3 that the hot water use instantaneous value has not fluctuated, the process proceeds to the next step, and it is determined whether or not the hot water supply has ended (step S4). Here, specifically, for example, when the instantaneous value of hot water use during simultaneous hot water supply returns to 8 L / min, it is determined that the hot water supply at the kitchen hot water supply port 122 has ended and the shower hot water supply port 121 has become a single hot water supply. can do. Further, when the instantaneous value of hot water use during simultaneous hot water supply changes to 5 L / min, it can be determined that the hot water supply at the shower hot water supply port 121 has ended and the hot water supply at the kitchen hot water supply port 122 has become a single hot water supply. When the hot water supply at the shower hot water supply 121 or the kitchen hot water supply 122 is completed, the result of the continuous hot water supply time is displayed on the remote controller 131 corresponding to each hot water supply (step S5).

  As described above, the present embodiment provides a highly reliable information by accurately identifying the hot water supply port by comparing the hot water use instantaneous value of the hot water supply port stored in advance with the detected value. I was able to.

  By the way, in the system of Embodiment 1 described above, the continuous hot water supply time is displayed on the remote controller 131 after the hot water supply ends, but other information may be displayed simultaneously. FIG. 6 shows a control block diagram of a water heater system according to a modification of the first embodiment of the present invention. The control block diagram shown in FIG. 5 has the same configuration as the control block diagram shown in FIG. 2 except that it includes the hot water use instantaneous value previous data storage means 145 and the hot water use instantaneous value comparison means 146. ing. The hot water use instantaneous value previous data storage means 145 stores the previous hot water use instantaneous value, and calculates the previous continuous hot water supply time from this. Further, the hot water use instantaneous value comparison means 46 compares the previous continuous hot water supply time input from the previous hot water use instantaneous value data storage means 145 with the current continuous hot water supply time, and transmits the result regarding the increase / decrease to the remote controller 131. To do. Thereby, since the information regarding the increase / decrease from the last value of the continuous hot water supply time can be displayed on the remote controller 131, the energy saving awareness can be effectively enhanced.

  Further, in the system of the first embodiment described above, the continuous hot water supply time is displayed on the remote control 131, but the information to be displayed is not limited to this as long as it is information that can prompt the user to be aware of energy saving. For example, it may be a continuous hot water supply flow rate. Moreover, in the system of Embodiment 1 mentioned above, although the hot water use instantaneous value of each hot water inlet was made into one fixed value, it is good also as a value which gave the width | variety in the range which does not overlap. For example, shower hot water may be 12 to 8 L / min, kitchen hot water may be less than 5 L / min, and the like.

Embodiment 2. FIG.
In the system of the first embodiment described above, the hot water outlet to be used is determined according to the detected instantaneous value of hot water supply, whereas in the system of the second embodiment, the user operates the remote controller 131. By doing so, the hot water outlet is determined.

  FIG. 7 shows an external view of a bathroom remote control according to Embodiment 2 of the present invention. The bathroom remote control 131 (a) is installed on the wall of the bathroom, and can mainly perform hot water supply settings relating to the bathroom. In the bathroom remote control 131 (a), a hot water supply shower switch 135 for the user to manually perform the hot water supply type determination means 143 is disposed.

  FIG. 8 is a diagram showing a flowchart of control according to Embodiment 2 of the present invention. First, in step S11, when the hot water shower switch 135 is turned ON by the user and hot water supply is started while the hot water shower switch 135 is ON (step S12), the hot water supply type determination is determined to be hot water in the shower hot water outlet 121 ( Step S13). Next, in step 14, it is determined whether or not the shower hot water supply has ended. As a result, when the end of hot water supply is determined, the process proceeds to the next step, and the continuous hot water supply time is displayed on the bathroom remote controller 131 (a) (step S15). In step S16, the hot water shower switch is turned off, and this routine ends.

  As described above, the present embodiment can accurately detect the continuous hot water supply time at the bathroom shower hot water outlet, and can provide highly reliable information.

  By the way, in the system of Embodiment 2 described above, a hot water shower switch is provided in the remote control 131 (a) installed in the bathroom to determine whether or not the shower hot water outlet 121 is used, but it is installed in the kitchen. A similar switch may be provided on the remote control 131 (b) to determine whether or not the kitchen hot water supply port 122 is used.

100 Hot water supply system 110 Hot water storage tank 114 Mixed hot water piping 115 Flow rate sensor (detection means)
120 Hot-water supply port 121 Shower hot-water supply port 122 Kitchen hot-water supply port 130 Control board 131 Remote control 141 Hot-water supply use instantaneous value detection means (detection means)
143 Hot water supply type judgment means (discrimination means)
144 Display means (notification means)
145 Hot water use instantaneous value previous data storage means (storage means)

Claims (2)

A hot water storage device having a first hot water supply port and a second hot water supply port and capable of supplying hot water in the hot water storage tank from the first hot water supply port and / or the second hot water supply port via a mixed hot water pipe. In the water heater
Detecting means that is disposed in the middle of the hot water pipe and detects an instantaneous value of the hot water flow rate flowing through the hot water pipe when hot water is supplied;
A remote control provided in the vicinity of each of the first hot water inlet and the second hot water outlet,
The first hot water supply port and the second hot water supply port belong to a range in which the instantaneous value at the time of hot water supply is different,
Based on the instantaneous value at the time of hot water supply, a discriminating means for discriminating a hot water supply port being used from the first hot water supply port and the second hot water supply port;
An arithmetic means for calculating at least one of a continuous hot water supply amount and a continuous hot water supply time from the hot water supply port specified by the determination means based on the instantaneous value;
Notifying means for notifying the calculation result by the calculating means by the remote controller in the vicinity of the hot water outlet determined by the determining means;
A hot water storage type water heater characterized by comprising: Storage means for storing a history of calculation results by the calculation means;
The hot water storage type hot water supply according to claim 1, further comprising a second notification means for simultaneously notifying a result of comparison with the previous hot water supply when the notification means notifies the calculation result of the calculation means. Machine.

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