JPH0443219A - Method of displaying used amount of gas and water in hot water feeder - Google Patents

Abstract

PURPOSE:To inform a user of a used amount of gas and water and further inform of a used amount of gas and water for every home by using a common large-sized hot water feeder in a collected dwelling by a method wherein the used amount of gas and water under an operation of a hot water feeder is automatically displayed. CONSTITUTION:A difference between detected values is detected by a temperature comparing part 101 in response to the detected values of a fed water temperature sensing thermistor 5 and a fed-out hot water temperature sensing thermistor 6. An amount of gas is calculated at a gas amount calculation part 102 in response to the detected value and a detected value of a flow sensor 4. A used amount of gas 106 is calculated by a calculation part 103, an accumulated amount of used gas 107 is calculated by a water amount calculation part 104, and an amount of used water 108 is calculated by a calculation 105 and then an accumulated amount of water 109 is instantly displayed by a controller. In the event that a hot water feeder for a plurality of homes is used, one set of the hot water feeder having a large capacity is installed and each of the homes 1, 2 and 3 is provided with a gas amount display part and a water amount display part, respectively. When a single home or a plurality of homes open the hot water feeder plug to start a hot water feeding, each of the homes is displayed at the calculated gas amount displaying portions 107(1), 107(2) and 107(3), respectively, and concurrently, each of the values is displayed at the calculated water amount displaying portions 109(1), 109(2) and 109(3), respectively.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a domestic water heater (including a bath device with a water heater).
This is related to the method of displaying gas and water consumption.

[Conventional technology]

In a water heater that is automatically controlled by a microcomputer control unit, such as a bath system with a water heater, when the water level and temperature for filling the water are set in the controller and the operation switch is turned on, the water heater heats the water to the set temperature. The bathtub is configured to pour hot water into the bathtub, and when the water level in the bathtub reaches a set water level, the pouring of hot water is stopped, and reheating operation is performed as necessary.

Further, when a desired hot water supply temperature is set on a controller for a kitchen other than a bathroom, and a hot water tap is opened, hot water is supplied at the set temperature regardless of the temperature at which hot water is filled in the bathtub.

[Problem to be solved by the invention]

By the way, as mentioned above, in conventional water heaters, when the hot water supply temperature is set on the controller, hot water is supplied at the set temperature, but the status during hot water supply is indicated by the lighting of the lamp provided on the controller. The amount of gas and water used during hot water supply is not displayed at all. For this reason, users become careless about the amount of gas and water used during hot water supply, and the reality is that gas and water are wasted.

Additionally, as mentioned above, in the past, the amount of gas and water used during hot water supply was unknown, so apartments were occupied by multiple households.

Even in housing complexes such as condominiums, each household requires its own water heater, which is one of the causes of high water heater installation costs.

The present invention improves the problems of the prior art as described above, displays the amount of gas and water used when using a water heater, and also allows each household to use a shared large water heater in the case of multiple households. An object of the present invention is to provide a method for displaying the amount of gas and water used in a water heater, which can display the amount of gas and water used for each water heater.

[Means to solve the problem]

In order to achieve the above-mentioned objects, the present invention calculates the amount of gas and water used based on the detected values of the inlet water temperature detector, the outlet water temperature detector, and the flow sensor of the water heater, and displays the calculation results on the display. It is characterized by being displayed on.

Moreover, the present invention connects a hot water outlet pipe of a multi-household water heater to a plurality of household hot water outlet pipes each having a separate flow sensor, and the water heater has an inlet water temperature detector and an outlet water temperature detector. The gas consumption amount and water consumption amount are calculated for each household based on the detected values of the inlet water temperature detector, the outlet water temperature detector, and the flow sensor for each household, and the results are calculated for each household. A feature is that the amount of gas used and the amount of water used are displayed on the display section.

[Effect]

As described above, the present invention makes it possible to determine the amount of gas used by comparing the detected value of the inlet water temperature detector and the detected value of the outlet water temperature detector, and calculating the temperature difference and the flow rate detected by the flow sensor. Moreover, the amount of water used can be known by integrating the flow rate detected by the flow sensor, and by displaying these on the controller, for example, the user can be informed of the amount of gas used and the amount of water used.

In addition, in the case of apartment buildings, even if a large shared water heater is used, the amount of gas and water used by each household can be reported, eliminating the need to install a water heater for each household. , This can reduce the cost of installing a water heater.

〔Example〕

The present invention will now be described in detail with reference to the accompanying drawings.

Fig. 1 is a block diagram showing the method of the present invention applied to a water heater, Fig. 2 is a block diagram showing the reheating of a bath device with a water heater, and Fig. 3 is a water system diagram showing an example of the configuration of a water heater. , Fig. 4 is a water system diagram showing an example of the configuration of a bath device with a water heater, Fig. 5 is a water system diagram showing an example of the configuration of a water heater for multiple households, and Fig. 6 is applied to the water heater shown in Fig. 5. FIG. 2 is a block diagram illustrating the method of the present invention.

Before explaining the present invention, the configuration of a water heater and a bath device with a water heater will be explained with reference to FIGS. 3 and 4.

In Fig. 3, 1 is a heat exchanger for hot water supply, and its water supply pipe 2
A flow sensor 4 and a thermistor 5 for detecting the temperature of incoming water are connected to the outlet pipe 3, a thermistor 6 for detecting the temperature of outlet water is connected to the outlet pipe 3, and an arbitrary number of hot water taps 7 are connected. 8 is a controller, which is connected to a microcomputer control section built into the main body of the instrument. Although not shown in the figure, the controller 8 is equipped with an up/down switch for setting the hot water temperature, and when the hot water tap 7 is opened after setting the desired hot water temperature, a burner (not shown) is ignited. In addition, a thermistor for detecting water temperature 5. The burner is proportionally controlled based on the detected values of the hot water temperature detection thermistor 6 and the flow sensor 4, so that hot water at a desired temperature can be obtained.

In the present invention, the controller 8 is provided with a gas/water consumption display section 8a and a reset switch 8b for the display section.

Figure 4 shows the bath equipment with water heater, and 1 to 8 are the third
The same parts as in the figure are indicated by the same reference numerals, and the hot water outlet pipe of the hot water supply heat exchanger is branched off and connected to the reheating pipe line 10 via a solenoid valve (with a check valve and a vacuum breaker) 9. In addition,
In FIG. 4, 11 is a heat exchanger for reheating, 12 is a pump, 13 is a thermistor for detecting bath water temperature, and 14 is a bathtub.

In the device shown in Fig. 4, the bathroom controller 8 is equipped with a bathtub water level setting switch, a hot water filling temperature setting switch, an operation switch, a reheating switch, etc. (all of which are omitted from illustration), and sets the water level and hot water temperature. After that, when the operation switch is turned on, hot water heated to a predetermined temperature by the hot water supply heat exchanger 1 is poured into the bathtub 14 via the circulation reheating pipe 10, and when the water level reaches the set water level, the hot water is poured. stop,
Next, while the pump 12 is parked, the bathtub temperature detection thermistor 13 detects the bathtub water temperature, and if it has not reached the set water temperature, the burner of the reheating heat exchanger 11 is ignited to reach the set water temperature. The device is configured to boil the water until it reaches the desired temperature, and then enters a warming operation if necessary.

Moreover, when the reheating switch is turned on, reheating operation is started.

Incidentally, since the water heater and bath apparatus with water heater shown in FIGS. 3 and 4 are well known, detailed explanations thereof will be omitted.

Next, the display method of the present invention when using the water heater shown in FIG. 3 will be explained based on FIG. 1.

In the present invention, the temperature comparison section 101 detects the difference between the incoming water temperature detection thermistor 5 and the outgoing water temperature detection thermistor 6 based on the detected values, and based on the detected value and the detected value of the flow sensor 4. The instantaneous gas usage amount is calculated by the gas amount calculation unit 102, and the result is displayed on the display unit 8a of the controller as the instantaneous gas usage amount 106, and the integration unit 103 integrates the result, and the result is displayed on the display unit 8a of the controller. Displayed as cumulative gas usage amount 107.

Also, based on the detected value of the flow sensor 4, the water amount calculation unit 1
04, the instantaneous water usage amount is calculated, and the result is displayed on the display section 8a of the controller as the instantaneous water usage amount 108, and is integrated by the integration section 105.

The result is displayed on the display section 8a of the controller as the cumulative amount of water 109.
Display as .

Each of the above displays is reset by pressing the reset switch 8b.

When using the bath equipment with water heater shown in Fig. 4 as a simple water heater or when using it to fill a bathtub with hot water,
The gas amount and water amount are displayed on the controller 8 in exactly the same manner as shown in FIG. 1 above.

FIG. 2 is a block diagram when the reheating switch is turned on in the apparatus shown in FIG. 4.

As shown in Fig. 2, when the reheating switch 8c is turned on,
Command unit 11 of the microcomputer control unit built into the device body
A signal is sent from 0 to the reheating combustion structure to perform reheating combustion, and on the other hand, the timer 111 and calculation unit 112 calculate the instantaneous amount of gas used (fixed in this case) in that case, and display this on the controller. It is displayed as an instantaneous gas consumption amount 106 in the section 8a, and is integrated by the integration section 103 and displayed as an integrated gas consumption amount 107. Note that the above display is also reset by pressing the reset switch 8b.

Figure 5 shows an example of the configuration of a multi-household monthly salary unit to which the present invention is applied.
It was applied to three households.

Install a water heater with a large capacity.

The hot water outlet pipe 3 is connected to the hot water outlet pipe 3-1 + 3- for each household. +
3-3 to each household's hot water tap 7-1 +
7-2t connected to 7-3, and the flow sensor 4-l + 4 connected to each outlet pipe: L, 32 + 3-3
-2+ 4-3 is arranged.

Further, as shown in FIGS. 5 and 6, the display section 8a is provided with a gas amount display section and a water amount display section for each household (1), (2), and (3).

Then, when one of the households (1), (2), and (3) opens the hot water tap and starts supplying hot water, the thermistor 5 for detecting the incoming water temperature and the thermistor 6 for detecting the temperature of the outlet water are connected. The temperature comparison unit 101 detects the difference between the two based on the detected value, and compares the detected value with the flow sensor 4-
+, 4-2t Based on the detection value of the flow sensor that detects flowing water in 4-3, the gas amount calculation for each household and the integrated gas amount for each household are calculated by the integration section, and the result is Cumulative gas amount display section 107(1), 107(2), 1
07(3), and at the same time, the flow sensor 4-
, t 4-2 + 4-3, the water consumption integration section calculates the cumulative amount of water for each household based on the detected value of the flow sensor that detects running water, and the result is displayed on the cumulative water amount display section 1.
09(1), 109(2), and 109(3) separately.

〔Effect of the invention〕

As described above, according to the present invention, the amount of gas and water used when using a water heater can be automatically displayed and notified to the user. Since the water heater can be used to notify each household of the amount of gas and water used, there is no need to install a water heater for each household, reducing the cost of installing a water heater. can.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing the display method of the present invention, Fig. 2 is a block diagram showing the display method when reheating a bath device with water heater, Fig. 3 is a water system diagram showing the configuration of the water heater, Figure 4 is a water system diagram showing the configuration of a bath device with water heater, Figure 5 is a water system diagram showing the configuration of a water heater for multiple households, and Figure 6 is a diagram of the present invention applied to the water heater shown in Figure 5. FIG. 2 is a block diagram showing a display method. 1... Heat exchanger for hot water supply, 2... Water supply pipe, 3... Hot water outlet pipe, 4 r 4-1 t 4-2+ 4-3... Flow sensor, 5... For detecting incoming water temperature Thermistor, 6.
・・Thermistor for checking hot water temperature, 7 + 7-1 +
7-2+ 7-3... Hot water tap, 8... Controller, 8a... Display unit, 10... Bathtub reheating pipe, 11...
- Heat exchanger for reheating, 12... pump, 13... thermistor for detecting bathtub water temperature, 14... bathtub. Patent Applicant GASTA Co., Ltd. Representative Patent Attorney Masami Akimoto and 1 other person Figure 1 b Figure 3

Claims (1)

[Claims] 1. A water heater is provided with an inlet water temperature detector, an outlet water temperature detector, and a flow sensor, and the gas and water A method for displaying gas and water usage in a water heater, characterized by calculating the usage and displaying the calculation result on a display unit. 2. A hot water outlet pipe of a water heater for multiple households is connected to a plurality of household hot water outlet pipes each having a separate flow sensor, and the water heater is equipped with an inlet water temperature detector and an outlet water temperature detector, The gas usage and water usage for each household are calculated based on the detected values of the inlet water temperature detector, the outlet water temperature detector, and the flow sensor for each household, and the results are calculated as the gas usage and water usage for each household. A method for displaying gas and water usage in a water heater for multiple households, characterized in that the amount of water used is displayed on a display section.