JP3227683B2 - Water heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bypass type hot water supply apparatus, and more particularly to a bypass pipe provided with a bypass valve for adjusting a flow rate of water, and detects an abnormality of the bypass valve based on a deviation between a set temperature and a hot water supply temperature. And a hot water supply device for controlling hot water supply.

[0002]

2. Description of the Related Art In a conventional hot water supply apparatus, an outlet side of a heat exchanger, a bypass pipe and a hot water supply pipe are connected by a hot water mixing valve.
A hot water supply device configured to mix high-temperature hot water supplied from a heat exchanger and water supplied from a bypass pipe at an appropriate mixing ratio and to supply hot water at a set temperature with a sufficient amount of hot water from the start of hot water supply. Is known.

[0003] Such a hot water supply device is provided with a detecting means such as a potentiometer for constantly detecting the valve opening of the mixing valve, and when a failure or the like occurs in which the mixing valve cannot be adjusted to the valve opening corresponding to the set temperature. Is configured to forcibly stop combustion of the heating unit and hot water supply.

[0004]

A conventional hot water supply apparatus having a mixing valve has a feature that a large amount of hot water at a set temperature can be supplied from the start of hot water supply, but a means for detecting the mixing valve and the valve opening of the mixing valve is provided. At present, the cost is increased and a high-end machine is used because functional components such as a potentiometer are used.

On the other hand, a low-cost hot water supply apparatus capable of supplying a large amount of hot water at a desired temperature from the start of hot water supply has been strongly desired from the viewpoint of improvement in convenience and usability.

However, when a low-priced hot water supply device is constructed by using a simple bypass valve instead of expensive functional parts such as a mixing valve and a valve opening detecting means of the mixing valve, the bypass valve may be connected to the bypass valve for some reason. Even if a failure, abnormality, or the like occurs, there is no accurate valve opening detection means such as a potentiometer, so that there is a problem that hot water having a temperature higher or lower than the set temperature is continuously supplied.

The present invention has been made to solve such a problem, and an object of the present invention is to determine whether a bypass valve has a failure or abnormality based on a deviation between a set temperature and a hot water supply temperature, and to supply hot water in accordance with the state of the failure. An object of the present invention is to provide a hot water supply device that can stop or supply hot water at a predetermined temperature equal to or lower than a set temperature.

[0008]

In order to solve the above-mentioned problems, a hot water supply apparatus according to the present invention includes a control means for, when supplying hot water, a deviation of a deviation based on set temperature information from a remote control device and hot water temperature information detected by a hot water temperature sensor. The absolute value and the predetermined value are compared, and when the absolute value of the deviation exceeds the predetermined value and continues for a predetermined time, the bypass valve is determined to be abnormal, and the hot water supply emergency stop valve provided on the outlet side of the hot water storage heat exchanger and comprising a bypass valve abnormality determination means for閉結controlling the solenoid valve of the heating unit, and a display control means for controlling the display means for displaying an abnormality occurs, by
The pass valve abnormality determination means opens the bypass valve when hot water supply is stopped.
Valve opening information from the limit detection means that detects full opening
The emergency stop valve for hot water supply is determined based on the
It is characterized by performing closing control .

The bypass valve abnormality determining means operates based on the abnormality release information output from the abnormality release switch when the abnormality release switch provided on the remote control device is operated when the display means is displaying an abnormality. The valve opening degree of the bypass valve is fully opened, and if the valve opening degree is fully open, the hot water supply emergency stop valve is controlled to be opened, and the display control means clear-controls the abnormal display.

Further, the bypass valve abnormality determination means includes abnormality detection counting means, and when the abnormality of the bypass valve is detected a predetermined number of times during hot water supply or when hot water supply is stopped, the hot water supply emergency stop valve and the solenoid valve are closed. It is characterized in that the display means is provided with an input prohibiting means for displaying an abnormality on the display means and prohibiting the operation of the remote controller.

Further, the control means of the hot water supply apparatus according to the present invention, when an abnormality of the bypass valve is detected during hot water supply, sets the heating unit so as to control the temperature of the hot water of the hot water storage type heat exchanger to a predetermined temperature. Along with the output means, an alarm is displayed and an alarm is generated until the temperature of the hot water of the hot water storage type heat exchanger reaches a predetermined temperature, and when the temperature does not reach the predetermined temperature even after the lapse of a predetermined time, a hot water supply emergency stop valve and A bypass valve abnormality determining means for controlling the closing of the solenoid valve is provided.

[0012]

In the hot water supply apparatus according to any one of the first to third aspects, since the control means includes the bypass valve abnormality determination means, the absolute value of the deviation between the set temperature and the hot water temperature exceeds a predetermined value during the hot water supply and continues for a predetermined time. When the hot water supply is stopped, or when the valve opening information is not detected from the limit detection means when the hot water supply is stopped, both the hot water supply emergency stop valve and the solenoid valve of the heating unit, or the hot water supply emergency stop valve is closed to stop the hot water supply and the display means is displayed. Abnormalities can be displayed.

Further, in the hot water supply apparatus according to the present invention, since the control means is provided with the abnormality detection counting means and the input prohibiting means, the hot water supply can be operated by operating the abnormality release switch of the remote control device even if the abnormality of the bypass valve is displayed. When it is confirmed that the bypass valve is fully opened at the time of stopping, the hot water supply emergency stop valve is opened to enable a hot water supply try, and when an abnormality is detected even if the number of the hot water supply tries reaches a predetermined number, an abnormality release switch of the remote control device. The operation can be invalidated to prohibit a hot water supply attempt.

In the hot water supply apparatus according to a fourth aspect of the present invention, the control means includes a set calorific value output section, and the temperature of the hot water of the hot water storage type heat exchanger is adjusted to a predetermined appropriate temperature that does not cause a burn based on the calorific value calculated by the set calorie calculating section. Since the setting can be made, hot water supply can be continued even when an abnormality of the bypass valve is detected.

[0015]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an overall configuration diagram of a hot water supply apparatus according to the present invention. In FIG. 1, a hot water supply device 1 includes a hot water supply device main body 2.
And the remote control device 3. Hot water supply unit 2
Is a hot water supply path 8 including a hot water supply pipe 4 and a hot water supply pipe 6 connected to a hot water storage type heat exchanger 5 and a hot water tap 7, and a hot water supply pipe 4 and a hot water supply pipe 6 bypassing the hot water storage type heat exchanger 5. A bypass pipe 9 provided, a bypass valve 10 provided with a limit switch 10A provided in the middle of the bypass pipe 9, and a forcible supply of hot water from the hot water storage type heat exchanger 5 when the bypass valve 10 is abnormal. Hot water supply emergency stop valve 11 to stop and solenoid valve 1
2. It comprises a heating section 15 having a gas proportional valve 13 and a gas burner 14, and control means 16.

The hot water supply device main body 2 includes a water supply temperature sensor 19 for the water supply pipe 4, a flow rate sensor 17 and a hot water supply temperature sensor 18 for the hot water supply pipe 6, and a heat exchange outlet temperature sensor 2 for the hot water storage type heat exchanger 5.
0, the bypass valve 10 is provided with a limit switch 10A for detecting the maximum opening of the bypass valve, and the control means 16 performs calculations and processes necessary for controlling the hot water supply device 1 based on sensor information from these sensors.

The control means 16 is composed of an electronic circuit based on a microprocessor (not shown).
0, a heating control unit 31, a bypass valve abnormality determination unit 40, a bypass valve control unit 35, an emergency stop valve control unit 48, a display control unit 49, an alarm control unit 50, etc., to perform various calculations, controls, and drives. .

The remote controller 3 includes an operation switch 3A, a temperature setting section 3B, operation switches such as an abnormality release switch 3C, a display means 21 including a memory and an LCD (liquid crystal display), a transmission circuit and a speaker. Alarm generating means 22 for setting the temperature of the water heater 2 and displaying the status. This type of hot water supply device 1 generally has a case in which the hot water supply device main body 2 is installed outdoors except for the hot water tap 7, and the remote control device 3 is operated indoors to operate the hot water supply device main body 2.
The operation is performed.

FIG. 2 is a block diagram of the control means of the hot water supply apparatus according to the first to third aspects of the present invention. 2, the control unit 16 includes a calorific value calculation unit 30, a heating control unit 31, a bypass valve abnormality determination unit 40, a bypass valve control unit 35, an emergency stop valve control unit 48, a display control unit 49, and an alarm control unit 50. .

The calorie computing unit 30 determines the temperature of the hot water in the hot water storage heat exchanger 5 of FIG. 1 based on the set temperature (Ts) information 3b, the feed water temperature (Tc) information 19a and the flow rate (Q) information 17a. The corrected calorie value Fo is calculated so as to be the intersection outlet temperature (Th: for example, 80 ° C.), and the corrected calorie (Fo) information 30a is calculated.
Is output.

The heating controller 31 includes a calorie-valve opening degree converter 3
2, a proportional valve drive unit 33, an electromagnetic valve drive unit 34, etc., and the calorie-valve opening degree conversion unit 32 converts the corrected heat amount Fo into a proportional valve opening degree, and converts the conversion information (Xt1) 32a into the proportional valve drive unit 33. To output a proportional valve drive signal (Xp) 33a to control the gas proportional valve 13 of FIG. The solenoid valve driving unit 34 is configured as shown in FIG.
The electromagnetic valve 12 is opened and closed based on the flow rate (Q) information 17a detected by the flow rate sensor 17 with the opening and closing of the hot water tap 7.
Electromagnetic valve drive information (Xd) forcibly closing the electromagnetic valve 12 based on the abnormality information (Ih) 45a from the adder 45.
34a is output.

The bypass valve control section 35 includes a bypass valve opening degree conversion section 36 and a bypass valve driving section 37. The bypass valve opening degree conversion section 36 stores the heat exchange outlet temperature (Th) information 20.
a, Set temperature (Ts) information 3b and feed water temperature (Tc)
Based on the information 19a, the distribution ratio (Qw / Q), which is the amount of water (Qw) on the bypass valve 10 side with respect to the hot water supply of the flow rate Q =
(Th-Ts) / (Th-Tc) is calculated, and this distribution ratio (Qw / Q) is converted to the valve opening of the bypass valve 10 with reference to a conversion table stored in advance in a memory such as a ROM. The conversion information (Xt2) 36a is transmitted to the bypass valve driving unit 37.
To output bypass valve drive information (Xb) 37a.

As described above, in the normal hot water supply operation in which there is no abnormality in the bypass valve 10 shown in FIG. 1, the control means 16 calculates the heat amount of the heat amount calculating section 30, the solenoid valve driving control of the heating control section 31, and the gas proportional valve driving. Control and bypass valve control unit 35
Hot water at the set temperature (Ts) can be supplied. However, when the bypass valve abnormality determining unit 40 of the control unit 16 determines that the bypass valve 10 is abnormal, the solenoid valve driving unit 34, the emergency stop valve control unit 48, the display control unit 49, and the alarm control unit 50 are controlled to perform heating. And forcibly stop the hot water supply, and display abnormalities and alert with an alarm sound.

The bypass valve abnormality determining means 40 includes a temperature deviation calculating section 41, a comparing means 42, a timer means 43, a bypass valve fully open detecting means 44, an adder 45, a reset means 46,
An abnormality detection and counting unit 47 and an input prohibiting unit 51 are provided.

If there is an abnormality in the bypass valve 10 during hot water supply,
Since the hot water supply temperature Tm deviates from the set temperature Ts and the deviation increases, the temperature deviation calculator 41 sets the set temperature (Ts) information 3
b and the hot water supply temperature (Tm) information 18a, the absolute difference value ΔT (=
| Tm−Ts |), and the deviation information (ΔT) 41 a is provided to the comparing means 42. The comparing means 42 is composed of a comparator, a memory for storing a predetermined constant k, and the like, and based on the deviation information (ΔT) 41a, the absolute deviation value ΔT and the predetermined constant k.
And the deviation absolute value ΔT exceeds a predetermined constant k (ΔT
> K), it is determined that the bypass valve 10 has an abnormality, and abnormality determination information (Hα) 42a is output. The abnormality determination information (Hα) 42a is based on the abnormality of the bypass valve 10 which is instantaneously detected by the comparing means 42. Basically, based on this information (Hα) 42a, the electromagnetic valve driving unit 34, the emergency stop The valve control unit 48, the display control unit 49, and the alarm control unit 50 are configured to be controlled (for example, the timer unit 43 is deleted and the Hα information 42a is directly supplied to the adder 45), and the hot water supply is stopped to display an abnormality. be able to.

The timer means 43 measures the continuation time of the abnormality determination information (Hα) 42a to prevent the instantaneous abnormality determination of the bypass valve 10 and to reliably determine the abnormality. Considers that the bypass valve 10 has caused an abnormality, and adds the abnormality continuation information (tk) 43a to the adder 45.
To provide.

The bypass valve fully open detecting means 44 detects the full opening of the bypass valve 10 when the hot water supply is stopped,
Is detected based on the limit switch (Ls) information 10a from the limit switch 10A provided in the CPU, and when the flow rate Q is 0 (hot water supply is stopped) and the bypass valve opening degree is not fully open, the bypass valve full open abnormality information (Xa) 44a to adder 4
5 provided. Further, the bypass valve fully open detecting means 44
In a state where the bypass valve abnormality determination means 40 determines that the bypass valve 10 is abnormal and forcibly stops hot water supply, the abnormality release switch 3C of the remote control device 3 is operated to supply the abnormality release information (Ik) 3c. In this case, the full release of the bypass valve 10 is checked by using the abnormality release information (Ik) 3c as a trigger.
Is provided to the reset means 46.

The adder 45 is constituted by an OR logic circuit or the like,
Abnormality continuation information (tk) 4 from timer means 43 at the time of hot water supply
3a or means for detecting bypass valve full open when hot water supply is stopped
The abnormality information (Ih) 45a is provided to the solenoid valve driving circuit 73, the emergency stop valve control unit 48, the display control means 49, the alarm control means 50, and the abnormality detection counting means 47 based on the full opening abnormality information (Xa) 44a from .

The abnormality detecting and counting means 47 counts the number N of occurrences of the abnormality information (Ih) 45a supplied from the adder 45, and when the number N reaches a predetermined number Ni, the counting information (Nh).
i) providing 47a to the input prohibiting means 51; Upon receiving the count information (Ni) 47a, the input prohibiting unit 51 prohibits the abnormality release information (Ik) 3c input from the abnormality release switch 3C of the remote control device 3, and the abnormality release information (Ik) 3
The driving of the bypass valve full-open detection means 44 by c is prohibited.

The reset means 46 generates a reset signal (Rt) 46a based on the full open determination information 44b provided from the bypass valve full open detection means 44, and outputs the abnormality information (I
h) Reset the solenoid valve drive unit 34, the emergency stop valve control unit 48, the display control unit 49, and the alarm control unit 50 controlled based on 45a to perform a hot water supply try.

The emergency stop valve control section 48 sends an emergency valve control signal (St) 48a to the hot water supply emergency stop valve 11 of FIG. 1 based on the abnormality information (Ih) 45a from the adder 45, Control the opening and closing of The hot water supply emergency stop valve 11 opens the valve when there is no abnormality in the bypass valve 10, and closes the valve when there is abnormality and the abnormality information (Ih) 45a is supplied, and the hot water storage type heat exchange. Hot water supply from the container 5 is forcibly prohibited. In addition, the emergency stop valve control unit 48
When the reset signal (Rt) 46a is generated, control is performed to open the hot water supply emergency stop valve 11.

The display control means 49 outputs the abnormality information (Ih) 4
The display information (Ds) 49 is transmitted based on the
Is sent to the display means 21 provided in the device, and is controlled to display an abnormality. Further, the display control means 49 is provided with the reset means 4.
When a reset signal (Rt) 46a is generated from 6 (including a power-on reset), control is performed so as to eliminate the abnormal display. It should be noted that a memory or the like provided with a backup power supply provided in the display means 21 is controlled so that the abnormal display is not erased even when the reset signal (Rt) 46a is generated from the reset means 46, or even if the power is turned off. It is also possible to configure so that the contents of the abnormality are stored and held in the memory.

The alarm control means 50 outputs the abnormality information (Ih) 4
Based on 5a, alarm information (Ar) 50a is sent to alarm generating means 22 provided in remote controller 3, and an alarm signal is oscillated to generate an alarm sound from an acoustic unit such as a speaker. In addition, since the generation of the alarm sound is noisy when it corresponds to the time during which the abnormality continues, control is performed such that the alarm sounds only for a predetermined time from the start of the abnormality or stops after a predetermined number of times are generated at predetermined time intervals. .

As described above, when the bypass valve abnormality determining means 40 of the control means 16 detects an abnormality of the bypass valve 10 at the time of hot water supply and at the time of hot water supply stop, the abnormality information (Ih) 45a
Is generated, the electromagnetic valve driving unit 34 and the emergency stop valve control unit 48 are controlled so as to forcibly close the electromagnetic valve 12 and the hot water supply emergency stop valve 11, and the display unit 21 and the alarm generation unit 22 are driven. The display control means 49 and the alarm control means 50 are controlled so as to perform an abnormal display and an alarm sound, respectively.

The bypass valve abnormality determination means 40 operates the abnormality release switch 3C of the remote controller 3 in the forced hot water supply stop state in which the abnormality of the water heater 1 is detected, and based on the abnormality release information (Ik) 3c. Check that the bypass valve 10 is fully open, and if there is an abnormality, the forced hot water supply stop state is maintained. If there is no abnormality, the reset signal (Rt) 46
a is generated, the forced hot water supply stop state is released, and the hot water supply can be performed (hot water supply try). A hot water supply attempt is performed, and if an abnormality is determined again, the forced stop state is controlled, and a bypass valve for hot water supply and a bypass valve fully open error when the hot water supply is stopped occur in the order of operation of the error release switch-hot water supply try-abnormality detection The number of times is counted, and when the number of times reaches a predetermined number, the input of the abnormality release information (Ik) 3c is prohibited and the forced hot water supply stop is maintained.

The release of the forced hot water supply stop state is performed by the remote controller 3
Is operated by operating the operation switch 3A, but it is desirable to display on the display means 21 that repair is necessary and to make cancellation impossible.

FIG. 3 is a block diagram of the control means of the hot water supply apparatus according to a fifth aspect of the present invention. 3, the control means 60 is different from the control means 1 of FIG. 2 in that the control means 60 includes the set calorific value output means 60 and the configuration of the bypass valve abnormality determination means 70.
Different from 6.

The set calorie output means 60 includes a set calorie calculator 62 and a switching unit 63. The set calorie calculator 62 calculates a preset calorie Fα, and sets calorie information (Fα) 62.
a is output. The switching unit 63 is constituted by, for example, an electronic switch or the like, and outputs the corrected calorific value (Fo) information 3 from the calorific value calculating unit 30.
0a and the set calorie information (Fα) 62a are switched based on the abnormality determination information (Hβ) 42a from the bypass valve abnormality determiner 70, and the switched calorie information is sent to the heating controller 31 as the calorie switching information 63a. The contact position of the switching unit 63 is configured to select the set calorific value information (Fα) 62a when the abnormality determination information (Hβ) 42a is present.

The bypass valve abnormality judging means 70 includes a temperature deviation calculating section 41, a comparing section 42, a timer section 71, a temperature judging section 72, and a stop judging section 73. The temperature deviation calculator 41 and the comparing means 42 calculate only the difference ΔT (= Tm−Ts) between the set temperature Ts and the hot water supply temperature Tm, except for the calculation shown in FIG.
The configuration is the same as Comparison means 42 compares deviation ΔT with predetermined value k, and deviation ΔT is smaller than predetermined value k (ΔT <k).
In this case, the abnormality determination information (Hβ) 42a is output.

The time counting means 71 is provided with abnormality determination information (Hβ) 42
a as a trigger, a predetermined time tα is measured, and a time signal (t
α) 71a is sent to the stop determination unit 73. On the other hand, the temperature determination unit 72 also uses the abnormality determination information (Hβ) 42a as a trigger to compare the heat exchange outlet temperature Th with a set heat exchange outlet temperature Tho stored in advance in a memory such as a ROM, and to determine the set heat exchange outlet Th. When the difference between the temperature Th and the heat exchange outlet temperature Th is lower than a predetermined value ΔTh, the temperature determination information (ΔTh) 72 a is determined by the stop determination unit 7.
Output to 3. When the abnormality determination information (Hβ) 42a is generated, the heating control unit 31 performs heating control based on the set heat amount Fα. Therefore, the set heat exchange outlet temperature Tho input to the temperature determination unit 72 is also based on the set heat amount Fα. Things.

The stop judging section 73 outputs a clock signal (tα) 71
a, and outputs a forced stop signal (sh) 73a for stopping the hot water supply device 1 based on the temperature determination information (ΔTh) 72a. The output condition of the forced stop signal (sh) 73a is as follows:
Only when the clock signal (tα) 71a is input before the time when the temperature determination information (ΔTh) 72a is input, the heat exchange outlet temperature Th is set to a temperature within a predetermined range by the time when the clock means 71 times up. If possible, hot water supply can be continued even when the abnormality of the bypass valve 10 is determined.

A forced stop signal (sh) from the stop determination unit 73
When 73a is output, as described with reference to FIG.
The electromagnetic valve driving unit 34, the emergency stop valve control unit 48, the display control unit 49, and the alarm control unit 50 are controlled to forcibly stop the water heater 1.

The abnormality determination information (Hβ) 42a output from the comparing means 42 is based on the instantaneous temperature deviation (Tho−
Although the output is performed based on Th), the output may be performed when a predetermined time is continued as shown in FIG. Further, in the embodiment, the control is described by the feed-forward system, but the control may be performed by a feedback system without being limited to this. Further, in the embodiment, the description has been made of the gas combustion apparatus. However, it is needless to say that the present invention is not limited to this and may be an oil combustion apparatus.

[0044]

As described above, the hot water supply apparatus according to the present invention displays bypass valve abnormality determining means for determining bypass valve abnormality during hot water supply and when hot water supply is stopped, based on temperature deviation information or limit detection information, and displays the abnormality. Since the display means is provided, a hot water supply can be forcibly stopped by detecting an abnormality of the bypass valve with a simple configuration.

Further, the hot water supply apparatus according to the present invention can continue to supply hot water even when the hot water supply apparatus is forcibly stopped, until the abnormality is released and the abnormality is detected a predetermined number of times.

Further, in the hot water supply apparatus according to the present invention, when an abnormality is determined due to a low hot water supply temperature, the hot water supply can be continued by changing the heat quantity and monitoring the heat exchange outlet temperature.

Therefore, it is possible to provide a highly convenient water heater that can detect abnormality of the bypass valve with a simple configuration.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a hot water supply apparatus according to the present invention.

FIG. 2 is a block diagram of a control unit of the hot water supply apparatus according to claims 1 to 3 of the present invention.

FIG. 3 is a block diagram of a control unit of the hot water supply apparatus according to claim 4 of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hot water supply device 2 Hot water supply device main body 3 Remote control device 3B Temperature setting part (Ts) 3C Abnormality release switch 5 Hot water storage type heat exchanger 10 Bypass valve 10A Limit switch 11 Hot water supply emergency stop valve 12 Electromagnetic valve 13 Gas proportional valve 16, 60 Control means Reference Signs List 17 Flow rate sensor (Q) 18 Hot water supply temperature sensor (Tm) 19 Water supply temperature sensor (Tc) 20 Heat exchange outlet temperature sensor (Th) 21 Display means 22 Alarm generation means 30 Heat quantity calculation unit 31 Heat control unit 35 Bypass valve control unit 40 , 70 bypass valve abnormality determining means 41 temperature deviation calculating section 42 comparing means 43 timer means 44 bypass valve fully open detecting means 45 adder 46 resetting means 47 abnormality detecting and counting means 48 emergency stop valve control section 49 display control means 50 alarm control means 51 Input prohibition means 61 Set calorie output means 62 Set calorie performance Part 63 switching unit 71 clocking means 72 temperature determination unit 73 stop determination unit

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F24H 1/18 301 F24H 1/10 302

Claims (4)

(57) [Claims] 1. A hot water supply path including a water supply pipe, a hot water storage type heat exchanger, a hot water supply pipe and a hot water tap, a heating unit including a solenoid valve, a fuel regulating valve, and a burner, and a branch from the water supply pipe. A bypass pipe connected to the outlet side of the hot water storage type heat exchanger, a bypass valve for adjusting a flow rate of water passing through the bypass pipe, and a control means for controlling the bypass valve and a heating unit. A hot water supply device configured to mix hot water from a heat exchanger and water whose flow rate has been adjusted by the bypass valve to obtain hot water at a desired temperature. The absolute value of the deviation based on the set temperature information and the hot water temperature information detected by the hot water temperature sensor is compared with a predetermined value, and when the absolute value of the deviation exceeds the predetermined value and continues for a predetermined time, it is determined that the bypass valve is abnormal. determined, before Provided at the outlet side of the hot water storage type heat exchanger
The hot water supply emergency stop valve and the solenoid valve of the heating unit, the bypass valve abnormality determination means, and display control means for controlling display means for displaying the occurrence of abnormality, the bypass valve abnormality determination means When the hot water supply is stopped
From the limit detection means to detect the full opening of the pass valve.
Determine the abnormality of the bypass valve based on the valve opening information,
A hot water supply apparatus, comprising closing and controlling the hot water supply emergency stop valve . 2. A water supply pipe, a hot water storage type heat exchanger, a hot water supply pipe and
Hot water supply path composed of hot water tap, solenoid valve, fuel adjustment
A heating section comprising a valve and a burner, and the water supply pipe
And connected to the outlet side of the hot water storage type heat exchanger
Adjust the flow rate of water passing through the bypass pipe and the bypass pipe.
Control the bypass valve and the heating section.
Control means, the hot water from the hot water storage type heat exchanger and the hot water
Mix with the water whose flow rate has been adjusted by the bypass valve, and
In the hot water supply apparatus configured to obtain hot water, the control means may supply a set temperature from a remote control device during hot water supply.
Information and hot water temperature information detected by hot water temperature sensor
The absolute value of the deviation is compared with a predetermined value, and the absolute value of the deviation is
If the value exceeds the predetermined value and continues for a predetermined time, the bypass
Judging that the valve is abnormal , installed at the outlet side of the hot water storage type heat exchanger
The hot water supply emergency stop valve and the solenoid valve of the heating unit.
Displays the bypass valve abnormality determination means for closing control and the occurrence of abnormality.
Display control means for controlling the display means for displaying the abnormality information.
Display, an error provided in the remote control device
When the normal release switch is operated,
Of the bypass valve based on the abnormality release information output from the
Check that the valve is fully open, and if this valve is fully open,
Open control of the hot water supply emergency stop valve and display control
Hot water supply characterized by clear control of means for displaying abnormalities
apparatus. 3. A water supply pipe, a hot water storage type heat exchanger, a hot water supply pipe and
Hot water supply path composed of hot water tap, solenoid valve, fuel adjustment
A heating section comprising a valve and a burner, and the water supply pipe
And connected to the outlet side of the hot water storage type heat exchanger
Adjust the flow rate of water passing through the bypass pipe and the bypass pipe.
Control the bypass valve and the heating section.
Control means, the hot water from the hot water storage type heat exchanger and the hot water
Mix with the water whose flow rate has been adjusted by the bypass valve, and
In the hot water supply apparatus configured to obtain hot water, the control means may supply a set temperature from a remote control device during hot water supply.
Information and hot water temperature information detected by hot water temperature sensor
The absolute value of the deviation is compared with a predetermined value, and the absolute value of the deviation is
If the value exceeds the predetermined value and continues for a predetermined time, the bypass
Judging that the valve is abnormal, installed at the outlet side of the hot water storage type heat exchanger
The hot water supply emergency stop valve and the solenoid valve of the heating unit.
Displays the bypass valve abnormality determination means for closing control and the occurrence of abnormality.
Display control means for controlling the display means to be displayed, and the front bypass valve abnormality determination means comprises abnormality detection counting means.
When the hot water supply or hot water supply is stopped,
When a predetermined number of times are detected, the hot water supply emergency stop valve and the hot water supply
When the solenoid valve is closed and an error is displayed on the display means,
Provided with input prohibition means for prohibiting remote control operation
A hot water supply device characterized by the following. 4. A water supply pipe, a hot water storage type heat exchanger, a hot water supply pipe and
Hot water supply path composed of hot water tap, solenoid valve, fuel adjustment
A heating section comprising a valve and a burner, and the water supply pipe
And connected to the outlet side of the hot water storage type heat exchanger
Adjust the flow rate of water passing through the bypass pipe and the bypass pipe.
Control the bypass valve and the heating section.
Control means, the hot water from the hot water storage type heat exchanger and the hot water
Mix with the water whose flow rate has been adjusted by the bypass valve, and
In the hot water supply device configured to obtain hot water, the control unit detects an abnormality of the bypass valve during hot water supply.
If the temperature of the hot water of the hot water storage type heat exchanger is
A set calorie output means for controlling the heating section so that
And the temperature of the hot water in the hot-water storage heat exchanger
An alarm is displayed and an alarm is generated until the temperature reaches a certain temperature.
If the predetermined temperature is not reached even after the elapse of the
Hot water emergency stop valve and a bypasser for controlling closing of the solenoid valve
A hot water supply device comprising a valve abnormality determining means.