JPH0749150A - Hot water supplying apparatus - Google Patents

Abstract

PURPOSE:To provide a hot water supplying apparatus in which components do not exceed a using limit by providing integrating means of pieces of various operating information, and executing a hot water supplying operation based on hot water output control information for maintenance notification different upon arrival of the integrated value at a set value for maintenance. CONSTITUTION:A hot water supply controller has integrating means of a burning time L of a burner, the number of ignitions S, a fuel burning amount Ip and a water flow rate Q, etc., of a heat exchanger as pieces of information on the operation. An integrated value Ls of the burning time, an integrated value Ss of the number of ignitions S, an integrated value Is of the amount Ip and an integrated value Qs of the rate Q are always calculated during hot water supply controlling, and respectively compared with predetermined set values Lm, Sm, Im, Qm for maintenance. As shown in steps #1 to #4, a maintenance notification operation for a hot water outputting operation is executed based on hot water output control information for maintenance notification different from the hot water output information as shown in a step #6 as they reach the set values, and when any value reaches the set value, an alarm lamp is lit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water supply apparatus having a heat exchanger for heating water with a burner and a control means for executing hot water discharge operation based on preset reference hot water discharge control information.

[0002]

2. Description of the Related Art Heretofore, as a hot water supply apparatus of this type, a heat exchanger for heating water is used to burn hot water by heating a burner, or a hot water storage tank is heated by an electric heater or a burner. There is a type of hot water supply. In the former case, the burner combustion amount is generally adjusted so that the target hot water supply temperature is changed and set.
The burner combustion amount is adjusted to maintain the hot water from the heat exchanger at a fixed hot water temperature, and then mixed with the hot water from the heat exchanger to reach the target hot water temperature set by the user. There is also a form that adjusts the amount of water mixed. In the latter case, the hot water in the hot water storage tank is heated using an electric heater or burner so as to maintain a fixed hot water supply temperature, and then the target hot water temperature is changed and set by the user. In general, the form of adjusting the amount of water mixed in the hot water from the hot water storage tank is common.

In such a water heater, an integrating means for accumulating various accumulative operation information in the water heater is provided, and as the integrated value of the integrating means reaches a set value for maintenance, for example, an operating section of the main body is provided. By flashing a warning lamp or the like provided on the remote control device or the like, it is configured to inform the user that maintenance such as a burner or a blower fan that supplies combustion air for the burner is necessary. Was there.

[0004]

However, according to the above-mentioned prior art, when maintenance becomes necessary,
Although warning lamps etc. blink on the operation unit and remote control device to notify the need for maintenance, the hot water supply operation state of the hot water supply device itself does not change and the hot water supply operation is the same as before for the user. ,
The user does not feel the need for maintenance, or the need for maintenance is not well communicated to the user, so the water heater is not maintained, and some components have reached their limit of use due to poor maintenance. There is a disadvantage that the device is not properly used according to its original durability. An object of the present invention is to eliminate the above-mentioned conventional drawbacks.

[0005]

A first characteristic configuration of a hot water supply apparatus according to the present invention is provided with an accumulating means for accumulating operation information, and the control means is configured so that the integrated value of the accumulating means is a set value for maintenance. It is configured to execute the hot water discharge operation based on maintenance hot water discharge control information different from the hot water discharge control information.

Second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, twelfth and thirteenth characteristic configurations of the water heater according to the present invention. Is for identifying a preferred specific configuration for carrying out the first characteristic configuration, and the second characteristic configuration is that the control means is configured so that the integrated value of the integrating means reaches a set value for maintenance. Then, the maintenance information prompting the maintenance is displayed on the display means.

A third characteristic configuration is that the integrating means is configured to integrate the combustion time of the burner as operation information.

A fourth characteristic configuration is that the integrating means is configured to integrate the number of times the burner is ignited or extinguished as operation information.

A fifth characteristic configuration is that the integrating means is configured to integrate the fuel combustion amount of the burner as operation information.

A sixth characteristic configuration is that the integrating means is configured to integrate the amount of water passing through the heat exchanger as operation information.

In a seventh characteristic configuration, the control means controls hot water discharge based on the reference hot water discharge control information so that the upper limit value of the adjustment of the fuel combustion amount of the burner is within a range up to the upper limit fuel combustion amount, and Based on the maintenance notification hot water discharge control information, the hot water discharge control is performed so that the upper limit value of the adjustment of the burner fuel combustion amount is a range up to the maintenance notification hot water discharge control information that is lower than the upper limit fuel combustion amount. In point.

In an eighth characteristic configuration, the control means maintains the hot water discharge temperature at the target temperature changed and set by the target temperature setting means on the basis of the reference hot water discharge control information so that the burner fuel burns. Amount or the amount of water passing through the heat exchanger, and based on the maintenance notification hot water discharge control information, the burner fuel combustion amount or the heat exchange is performed so as to maintain the hot water discharge temperature at a preset maintenance notification temperature. It is configured to control the water flow rate of the vessel.

A ninth characteristic configuration is that the control means maintains the hot water discharge temperature at the target temperature changed and set by the target temperature setting means on the basis of the reference hot water discharge control information so as to maintain the burner fuel combustion amount. Or control the water flow rate of the heat exchanger,
Based on the maintenance notification hot water discharge control information, it is configured to control the fuel combustion amount of the burner or the water flow amount of the heat exchanger so as to maintain the hot water discharge temperature at a temperature that is a set value lower than the target temperature. There is a point.

In a tenth characteristic configuration, the control means maintains the hot water discharge temperature at the target temperature changed and set by the target temperature setting means on the basis of the reference hot water discharge control information so that the burner fuel combustion amount is maintained. Or control the water flow rate of the heat exchanger,
Based on the maintenance notification hot water discharge control information, the fuel combustion amount of the burner or the water flow amount of the heat exchanger is controlled so that the target temperature is gradually increased or decreased with time. It is in the point that is configured.

An eleventh characteristic configuration is that the control means maintains the outlet heated water temperature at a target temperature changed and set by the target temperature setting means based on the reference heated water outlet control information.
By controlling the fuel combustion amount of the burner or the water flow amount of the heat exchanger, based on the maintenance notification hot water supply control information, the hot water supply operation is stopped by a stop command, and the setting state of the target temperature setting means is set. It is configured to change to the minimum temperature setting state.

In a twelfth characteristic configuration, based on the reference hot water discharge control information, the control means operates the ignition means to burn the burner and supply hot water in accordance with a hot water supply command. Based on the maintenance hot water discharge control information, the time from the hot water supply command is given until the burner starts burning is set longer than in the operating state based on the standard hot water discharge control information. So as to control the operation of the ignition means.

In a thirteenth characteristic configuration, the control means reduces the hot water supply amount per unit time based on the maintenance notification hot water discharge control information as compared with that in the operating state based on the reference hot water discharge control information. As described above, the hot water supply amount adjusting means is adjusted.

[0018]

According to the first characteristic configuration of the present invention, the integrating means for integrating the operation information is provided, and the control means controls the hot water discharge control information as the integrated value of the integrating means reaches the set value for maintenance. Since it is configured to execute a hot water discharge operation based on maintenance notification hot water discharge control information different from that of the above, since the user is provided with a hot water supply operation different from before while using the hot water supply device, the user can perform maintenance You can feel the need.

According to the second characteristic configuration, the control means is configured to display the maintenance information prompting the maintenance on the display means as the integrated value of the integrating means reaches the set value for maintenance. From the user
It is possible to realize the necessity of maintenance by hot water discharge operation based on the maintenance notification hot water discharge control information, and also to know the necessity of maintenance by the display means.

According to the third characteristic configuration, since the integrating means is configured to integrate the burner combustion time as the operation information, it is possible to judge the necessity of maintenance based on the total combustion time. .

According to the fourth characteristic configuration, since the integrating means is configured to integrate the number of burner ignitions or extinguishings as the operation information, maintenance is required based on the total number of ignitions or the total number of fires extinguished. You can judge your gender.

According to the fifth characteristic configuration, the integrating means is configured to integrate the fuel combustion amount of the burner as the operation information. Therefore, it is possible to judge the necessity of maintenance based on the total fuel combustion amount. You can

According to the sixth characteristic configuration, since the integrating means is configured to integrate the water flow rate of the heat exchanger as the operation information, it is possible to judge the necessity of maintenance based on the total water flow rate. You can

According to the seventh characteristic configuration, the control means controls the hot water discharge based on the reference hot water discharge control information so that the upper limit value of the adjustment of the fuel combustion amount of the burner is within the range up to the upper limit fuel combustion amount, and the maintenance is performed. Based on the notification hot water discharge control information, the hot water discharge control is configured so that the upper limit value of the burner fuel combustion amount adjustment is set as a range up to the maintenance notification hot water discharge control information that is lower than the upper limit fuel combustion amount. When the hot water supply operation is performed based on the maintenance notification hot water supply control information, when the hot water supply of a relatively high temperature is requested, the user feels inconvenience that the desired hot water supply temperature cannot be obtained.

According to the eighth characteristic configuration, the burner fuel combustion amount is controlled so that the control means maintains the tapping temperature at the target temperature changed and set by the target temperature setting means based on the reference tapping control information. Or, to control the water flow rate of the heat exchanger, based on the maintenance notification hot water discharge control information, so as to maintain the hot water temperature at the preset maintenance notification temperature,
Since it is configured to control the fuel combustion amount of the burner or the water flow amount of the heat exchanger, the user sets the target temperature setting means during the hot water discharge operation based on the hot water control information for maintenance notification. You will feel the inconvenience of receiving hot water whose outlet temperature is different from the target temperature.

According to the ninth characteristic configuration, the burner fuel combustion amount is controlled so that the control means maintains the tapping temperature at the target temperature changed and set by the target temperature setting means based on the reference tapping control information. Or, by controlling the water flow rate of the heat exchanger, based on the maintenance notification hot water control information, in order to maintain the hot water temperature at a temperature that is lower than the set value from the target temperature, the fuel combustion amount of the burner or the heat exchanger Since it is configured to control the amount of water flow, the user constantly discharges hot water more than the target temperature set by the target temperature setting means when the hot water discharge operation is performed based on the maintenance notification hot water discharge control information. You will feel the inconvenience of receiving hot water.

According to the tenth characteristic configuration, the burner fuel combustion amount is controlled so that the control means maintains the tapping temperature at the target temperature changed and set by the target temperature setting means based on the reference tapping control information. Alternatively, the fuel combustion amount of the burner or the heat exchanger is controlled so that the target temperature is gradually increased or decreased over time based on the maintenance notification hot water discharge control information by controlling the water flow rate of the heat exchanger. Since it is configured to control the amount of water flow, the user feels the inconvenience of receiving hot water whose hot water temperature is not constant during hot water discharge operation based on the hot water control information for maintenance notification.

According to the eleventh characteristic configuration, the control means includes:
Based on the reference hot water control information, the burner fuel combustion amount or the heat exchanger water flow amount is controlled to maintain the hot water temperature at the target temperature changed and set by the target temperature setting means, and maintenance hot water hot water control is performed. Based on the information, it is configured to change the setting state of the target temperature setting means to the minimum temperature setting state when the hot water supply operation is stopped by the stop command, so that the user can start the next hot water supply operation. Along with this, it is always necessary to change the setting of the target temperature setting means to the desired temperature.

According to the twelfth characteristic configuration, the control means includes:
Based on the reference hot water discharge control information, the hot water supply command is instructed to operate the ignition means to burn the burner to supply hot water, based on the maintenance hot water discharge control information. It is configured to control the operation of the ignition means so that the time from when the hot water supply command is instructed until the burner starts to be burned is longer than in the operating state based on the reference hot water discharge control information. The user feels inconvenience that the reaction of starting the operation of the hot water supply device in response to the command to start the hot water supply operation is slow.

According to the thirteenth characteristic configuration, the control means is
Based on the maintenance notification hot water supply control information, the hot water supply amount per unit time is configured to be adjusted so as to be smaller than that in the operating state based on the standard hot water supply control information. The user feels inconvenience that only a small amount of hot water is supplied.

[0031]

According to the first characteristic configuration of the present invention, since the user can feel the necessity of maintenance while using the hot water supply apparatus, the maintenance can be performed at an appropriate time and the hot water supply can be performed. It is possible to provide a hot water supply apparatus that is used properly according to the original durability of the apparatus.

According to the second characteristic configuration, the user is aware of the necessity of maintenance by the hot water discharge operation based on the maintenance notification hot water discharge control information, and can also know the necessity of maintenance by the display means. Therefore, it is possible to provide the hot water supply device that allows the user to know more reliably the necessity of maintenance.

According to the third characteristic constitution, the necessity of maintenance can be judged based on the total combustion time, and therefore, the portion where deterioration and the like increase with the combustion time, for example, dust clogging of the filter of the blower fan, etc. On the other hand, it is possible to provide a hot water supply device capable of appropriately and accurately determining the necessity of maintenance.

According to the fourth characteristic configuration, the necessity of maintenance can be judged based on the total number of ignitions or the total number of extinguishments. Therefore, a portion where deterioration or the like increases with each ignition or extinction, for example, ignition It is possible to provide a hot water supply device that can appropriately and accurately determine the necessity of maintenance for a plug or a portion that is affected by a sharp rise in temperature.

According to the fifth characteristic configuration, the necessity of maintenance can be determined based on the total fuel combustion amount, so that the deterioration and the like increase according to the combustion amount of the burner, that is, the same combustion time. However, it is possible to properly and accurately determine the necessity of maintenance for the parts where deterioration is promoted when strongly combusted, such as burner parts, heat exchangers, combustion chamber parts, etc. It is possible to provide a hot water supply device that can be used.

According to the sixth characteristic configuration, the necessity of maintenance can be judged based on the total amount of water passing, so that the portion where deterioration or the like increases due to water passing, for example, water passing through the heat exchanger. It is possible to provide a hot water supply device that can appropriately and accurately determine the necessity of maintenance for a portion, a water amount sensor, and the like.

According to the seventh characteristic configuration, the user feels inconvenience that hot water of a desired hot water supply temperature cannot be obtained, so that the user can feel the necessity of maintenance. can do.

According to the eighth characteristic configuration, the user feels the inconvenience of receiving hot water having a hot water temperature different from the target temperature set by the target temperature setting means. Therefore, the user is keenly aware of the necessity of maintenance. It is possible to provide a hot water supply device that can do this.

According to the ninth characteristic configuration, the user always feels the inconvenience of receiving hot water having a hot water discharge temperature lower than the target temperature set by the target temperature setting means. It is possible to provide a hot water supply device that makes it possible to realize the necessity.

According to the tenth characteristic configuration, the user feels the inconvenience of receiving hot water whose hot water temperature is not constant while the hot water is being operated based on the hot water control information for maintenance notification. It is possible to provide a hot water supply device that makes it possible to realize the necessity of maintenance.

According to the eleventh characteristic configuration, the user
With the start of the next hot water supply operation, the user will always feel the complexity of having to change the setting of the target temperature setting means to the desired temperature, so that the user can be keenly aware of the need for maintenance. Can be provided.

According to the twelfth characteristic configuration, the user
Since the reaction of starting the operation of the hot water supply device in response to the command to start the hot water supply operation is slow and inconvenient, it is possible to provide the hot water supply device which allows the user to feel the necessity of maintenance.

According to the thirteenth characteristic configuration, the user
Since the user feels the inconvenience that only a small amount of hot water is supplied, it is possible to provide a hot water supply device that allows the user to realize the necessity of maintenance.

[0044]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an original mixed type burner 1 and a burner 1.
A heat exchanger 2 that heats water by means of the above, a fan 3 of a blowing type that ventilates combustion air to the burner 1, and a controller H as a control means that executes a hot water discharge operation based on preset reference hot water discharge control information. A hot water supply device is shown.

Water for heating is supplied to the heat exchanger 2.
A water supply passage W1 for supplying water to the hot water supply passage W1 and a hot water supply passage W2 for supplying hot water heated by the heat exchanger 2 to the hot water tap 4 are connected.
The water supply passage W1 has a water supply amount sensor S1 for detecting the water supply amount Q.
And a hot water temperature sensor S2 for detecting the hot water temperature Ti, and a hot water supply temperature sensor S3 for detecting the hot water supply temperature To is provided in the hot water supply passage W2.

The fuel gas supply passage G1 to the burner 1 is provided with a fuel gas adjusting valve 5 as a combustion amount adjusting means for adjusting the combustion amount of the burner 1 and two disconnecting valves 6 and 7. .

The fan 3 is provided with an encoder S4 for detecting the rotation speed of the fan 3.

The burner 1 is provided with an igniter 8 as an ignition means, and a frame rod 9 for detecting ignition of the burner 1.

The water supply amount sensor S1, the water supply temperature sensor S2, the hot water temperature sensor S3, the encoder S4, the fan 3, the fuel gas adjusting valve 5, and the on / off valves 6 and 7 are connected to the controller H.

The controller H is mainly composed of a microcomputer, and is configured to be able to control various operations of the hot water supply device by the built-in software.

The remote controller R is also connected to the controller H. The remote control device R includes an operation switch 10
And a temperature display section 11 for displaying the target hot water temperature Ts, and a setting change switch 12 for changing the setting of the target hot water temperature Ts.
u and 12d are provided and configured to function as target temperature setting means.

In a normal operating state, the controller H sets the fan 3 for pre-purging as the hot water supply tap 4 is opened and the water supply amount sensor S1 detects the water supply amount Q which is equal to or more than the set amount. Drive for a set time at the number of revolutions, then
The intermittent valves 6 and 7 are opened, the burner 1 is ignited by the igniter 8, and thereafter, the detected water supply amount Q of the water supply amount sensor S1, the detected water supply temperature Ti of the water supply temperature sensor S2, and the hot water temperature sensor S3.
Based on the detected hot water temperature To detected by the remote control device R and the set target temperature Ts of the remote controller R, the fuel gas adjusting valve 5 is adjusted so that the detected hot water temperature To becomes the set target temperature Ts, and the burner 1 Based on the opening of the fuel gas regulating valve 5 as the combustion amount (fuel combustion amount) Ip of
Hot water supply control is performed to control the burner 1 so that the number of rotations is set in advance so as to achieve optimum combustion. After that, when the hot water supply plug 4 is closed and the water supply amount Q less than the set amount is detected by the water supply amount sensor S1, the intermittent valves 6 and 7 are closed, and the fan 3 is set to the post-purge rotational speed. At, hot water supply control is performed for a set time.

Then, the controller H has an integrating means 101 for integrating the combustion time L of the burner 1 as the operation information.
Is configured. In addition, the controller H has an integrating means 1 for integrating the number of ignitions S of the burner 1 as operation information.
02 is configured. Further, the controller H is provided with an integrating means 103 for integrating the fuel combustion amount Ip of the burner 1 as the operation information. Also, the controller H
In addition, an integrating means 104 for integrating the water flow rate Q of the heat exchanger 2 as operation information is configured.

The integrating means 101 is configured to constantly calculate the integrated value Ls of the combustion time L during hot water supply control and compare the integrated value Ls with a preset maintenance set value Lm. The integrating means 102 is configured to constantly calculate an integrated value Ss of the number of ignitions S and compare the integrated value Ss with a preset maintenance setting value Sm during hot water supply control. The integrating means 103 is configured to constantly calculate the integrated value Is of the fuel combustion amount Ip and compare the integrated value Is with a preset maintenance setting value Im during hot water supply control. The accumulating means 104 is
During hot water supply control, the integrated value Qs of the water flow rate Q is always calculated, and the integrated value Qs and the preset set value Qm for maintenance are set.
Is configured to compare with.

Then, as shown in Step 1 to Step 4 of FIG. 2, the controller H causes the integrated value Ls to reach the maintenance set value Lm, or the integrated value Ss becomes the maintenance set value Sm. As you reach
Alternatively, as the integrated value Is reaches the set value Im for maintenance, or as the integrated value Qs reaches the set value Qm for maintenance, as shown in step 6, it differs from the hot water control information. The hot water discharge operation is performed based on the maintenance hot water discharge control information, and the maintenance hot water operation is executed.

FIG. 3 shows an example of the maintenance notification operation used in this embodiment. As shown in step 1, when the fuel combustion amount Ip of the burner 1 set in the normal operation exceeds the set value Ipm as the maintenance notification hot water discharge control information, the controller H performs forced operation as shown in step 2. Specifically, the fuel combustion amount Ip is set to the set value Ipm. Here, the set value Ipm is set to a value lower than the upper limit value in the normal operation control.

Therefore, the controller H controls the hot water discharge based on the reference hot water discharge control information so that the upper limit of the adjustment of the fuel combustion amount Ip of the burner 1 is within the range of the upper limit fuel combustion amount, and the hot water maintenance control hot water control information. Based on Ipm,
The hot water discharge control is configured so that the upper limit value of the adjustment of the burner fuel combustion amount Ip is within a range up to the maintenance notification hot water discharge control information Ipm that is lower than the upper limit fuel combustion amount.

Further, the controller H, when the maintenance informing operation is executed, adds up the integrating means 101, 10
The remote control device R as a display means for displaying maintenance information prompting maintenance as the integrated values Ls, Ss, Is, Qs of 2, 103, 104 reach the set values Lm, Sm, Im, Qm for maintenance. Maintenance warning lamps 13a, 13b, 13c, 13d provided
Is configured to light up. The maintenance warning lamp 13a is turned on as the integrated value Ls reaches the set value Lm, and the maintenance warning lamp 13b is turned on.
Is turned on when the integrated value Ss reaches the set value Sm, the maintenance warning lamp 13c is turned on when the integrated value Is reaches the set value Im, and the maintenance warning lamp 13d is turned on when the integrated value Qs is set. It is turned on as it reaches Qm.

Therefore, depending on which maintenance warning lamp is turned on, it is possible to express the information indicating the portion requiring maintenance.

[First Alternative Embodiment] As shown in FIG. 4, the controller H forcibly changes the target hot water outlet temperature Ts to a predetermined temperature as a maintenance notification operation as shown in step 1. , And as shown in step 2,
The remote control device R may be configured so that the setting change of the target hot water outlet temperature Ts is prohibited. In this example,
The predetermined temperature at which the setting is forcibly changed is 42 ° C.

Therefore, the controller H controls the fuel combustion amount Ip of the burner 1 based on the reference hot water discharge control information so as to maintain the hot water discharge temperature To at the set target temperature Ts changed and set by the remote controller R. The burned fuel amount Ip of the burner 1 is controlled so as to maintain the hot water outlet temperature To at a preset maintenance hot water temperature based on the predetermined temperature as the maintenance hot water discharge control information. .

[Second Alternative Embodiment] As shown in FIG. 5, the controller H performs a maintenance informing operation by changing the set hot water temperature Ts' from the target hot water temperature Ts set by the remote controller R. It may be configured to operate in hot water supply. In this embodiment, the set temperature to be lowered is 10 ° C. as shown in step 1.

Therefore, in the present embodiment, the controller H controls the fuel combustion amount of the burner 1 so as to maintain the outlet heated water temperature To at the set target temperature Ts changed and set by the remote controller R based on the reference heated water discharge control information. Ip is controlled to control the fuel combustion amount Ip of the burner 1 so as to maintain the outlet hot water temperature Ts ′ based on the outlet hot water temperature Ts ′ that has been lowered by the set temperature as the hot water discharge control information for maintenance notification. ing.

[Third Alternative Embodiment] Also, the controller H
As shown in FIG. 6, as the maintenance informing operation, the hot water supply operation may be repeated by gradually increasing or gradually decreasing the target hot water temperature Ts set by the remote control device R with the passage of time. good. In the operation for notifying maintenance according to this embodiment, first, as shown in step 1, it is checked whether or not the timer built in the controller H, which counts up every 15 seconds, has counted up. When counting up, the variable i is multiplied by (-1) as shown in step 2, and the target hot water supply temperature Ts is as shown in step 3.
The setting is changed to Ts + i · 10 (° C). As a result, the target outlet temperature Ts is plus or minus 1 every 15 seconds.
It will be gradually increased or decreased in the range of 0 ° C.

Therefore, in the present embodiment, the controller H sets the fuel combustion amount of the burner 1 so as to maintain the outlet heated water temperature To at the set target temperature Ts changed and set by the remote controller R based on the reference heated water discharge control information. The fuel of the burner 1 is controlled so that the set target temperature Ts is gradually increased or decreased over time based on the above-mentioned control software as the hot water discharge control information for maintenance notification by controlling Ip. It is configured to control the combustion amount Ip.

[Fourth Embodiment] Further, the controller H
May be configured to change the setting state of the target hot water supply temperature Ts set by the remote control device R to the minimum temperature setting state as the hot water supply operation is stopped by the stop command as the maintenance notification operation. good. FIG. 7 shows a flowchart showing the operation for maintenance notification of the fourth alternative embodiment. In the maintenance notification operation according to the another embodiment, the stop command is issued when the hot water tap 4 is closed. When the stop command is issued as shown in step 1, the target hot water supply temperature Ts set by the remote controller R is automatically changed to the minimum target hot water supply temperature as shown in step 2, and As shown in step 3,
Target hot water temperature T by setting change switches 12u, 12d
The operation is configured to be stopped while the setting change of s is permitted.

[Fifth Embodiment] Further, the controller H
As the maintenance notification operation, the operation of the igniter 8 may be controlled so that the time from when the hot water supply command is instructed to when the burner 1 starts combustion is longer than the normal operation state. . That is, the controller H determines that the rotation speed correction amount Nc is the upper limit value n during the hot water supply operation.
If it is reached, the fact is stored, and in the subsequent hot water supply operation, the pre-purge operation time at the start of the hot water supply operation, that is, the intermittent valve 6, after the rotation of the fan 3 is started. 7 is opened and igniter 8
Thus, the operation is changed so that the time until the burner 1 is ignited is made longer than that in the normal operating state.

[Sixth Embodiment] In addition to the hot water tap 4, for example, as shown by a phantom line in FIG.
2 is provided with a hot water supply amount adjusting valve Z as a hot water supply amount adjusting means for limiting the hot water supply amount, and the controller H performs the maintenance notification operation by reducing the hot water supply amount per unit time to a smaller amount than in the normal operating state. Therefore, the hot water supply amount adjusting valve may be adjusted. That is, the controller H adjusts the hot water supply amount adjusting valve to the closed side as the rotation speed correction amount Nc reaches the upper limit value n during the hot water supply operation, and automatically reduces the hot water supply amount from the hot water tap 4. .

[Other Embodiments] The accumulating means is not limited to the above accumulating means 101, 102, 103, 104, but can be changed as appropriate. For example, the number of times of driving, the number of times of extinguishing, or the number of times over winter may be used.

Furthermore, the present invention can be applied to various types of hot water supply devices other than the type of hot water supply device of the above-described embodiment. For example, the flow rate Q of the heat exchanger 2 may be controlled so that the hot water outlet temperature To is maintained at a predetermined temperature. In addition, the burner burn rate is adjusted to maintain the hot water from the heat exchanger at a fixed hot water temperature, and
It may be of a type in which the amount of water mixed with the hot water from the heat exchanger is adjusted so that the target hot water supply temperature is changed and set by the user. In addition, the hot water in the hot water storage tank is heated using an electric heater or burner to maintain a fixed hot water supply temperature, and the hot water from the hot water storage tank is adjusted to reach the target hot water temperature that is changed and set by the user. It can also be applied to a type in which the amount of water mixed in is adjusted.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an overall configuration of a water heater.

FIG. 2 is a flowchart showing an integrating means and a maintenance notification operation.

FIG. 3 is a flowchart showing a maintenance notification operation.

FIG. 4 is a flowchart showing a maintenance notification operation according to another embodiment.

FIG. 5 is a flowchart showing a maintenance notification operation according to another embodiment.

FIG. 6 is a flowchart showing a maintenance notification operation according to another embodiment.

FIG. 7 is a flowchart showing a maintenance notification operation according to another embodiment.

[Explanation of symbols]

 H control means Ip fuel combustion amount Im set value Is integrated value Ipm maintenance hot water control information L combustion time Lm set value Ls integrated value Q water flow rate Qm set value Qs integrated value R target temperature setting means S number of ignitions or fire extinguishing Sm Set value Ss Integrated value To Hot water temperature Ts Target temperature Ts' Maintenance hot water control information Z Hot water supply amount adjusting means 1 Burner 2 Heat exchanger 8 Ignition means 13a Display means 13b Display means 13c Display means 13d Display means 101 Integration means 102 Integration Means 103 Accumulating Means 104 Accumulating Means

Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location F23N 5/26 101 Z G05D 23/19 C 9132-3H

Claims (13)

[Claims] 1. A hot water supply apparatus comprising: a heat exchanger (2) for heating water by a burner (1); and a control means (H) for executing a hot water discharge operation based on preset reference hot water discharge control information. Therefore, integrating means (101, 102, 10) for integrating the operation information
3, 104) are provided, and the control means (H) is provided with the integrating means (101, 10).
2, 103, 104) integrated values (Ls, Ss, Is, Q
s) is the set value for maintenance (Lm, Sm, Im, Q
The hot water supply apparatus is configured to execute the hot water discharge operation based on maintenance hot water discharge control information different from the hot water discharge control information when the temperature reaches m). 2. The control means (H) is configured to integrate the integrated value (Ls, Ls of the integrating means (101, 102, 103, 104).
Ss, Is, Qs are set values for maintenance (Lm,
Sm, Im, Qm), display means (13a, 13b, 1) for displaying maintenance information prompting maintenance.
The hot water supply device according to claim 1, wherein the hot water supply device is configured to be displayed on 3c, 13d). 3. The hot water supply apparatus according to claim 1, wherein the integrating means (101) is configured to integrate the combustion time (L) of the burner (1) as operation information. 4. The hot water supply apparatus according to claim 1, wherein the integrating means (102) is configured to integrate the number of times (S) of ignition or extinguishing of the burner (1) as operation information. 5. The water heater according to claim 1 or 2, wherein the integrating means (103) is configured to integrate a fuel combustion amount (Ip) of the burner (1) as operation information. 6. The water heater according to claim 1 or 2, wherein the integrating means (104) is configured to integrate the water flow rate (Q) of the heat exchanger (2) as operation information. 7. The control means (H), based on the reference hot water discharge control information, a fuel combustion amount (I) of the burner (1).
Hot water discharge control is performed with the upper limit value of the adjustment of p) as a range up to the upper limit fuel combustion amount, and the fuel combustion amount (Ip) of the burner (1) is adjusted based on the maintenance notification hot water discharge control information (Ipm). 2. The hot water discharge control is configured such that the upper limit value of is up to the maintenance notification hot water discharge control information (Ipm) lower than the upper limit fuel combustion amount.
The water heater according to 2, 3, 4, 5 or 6. 8. The control means (H) maintains the outlet heated water temperature (To) at a target temperature (Ts) changed and set by the target temperature setting means (R) based on the reference outlet heated water control information. In addition, the fuel combustion amount (Ip) of the burner (1) or the water flow amount (Q) of the heat exchanger (2) is controlled, and the preset maintenance notification temperature is set based on the maintenance notification tap water control information. The fuel combustion amount (Ip) of the burner (1) or the water flow amount (Q) of the heat exchanger (2) is controlled so as to maintain the outlet heated water temperature (To). 2, 3, 4, 5 or 6 hot water supply apparatus. 9. The control means (H) maintains the outlet heated water temperature (To) at the target temperature (Ts) changed and set by the target temperature setting means (R) based on the reference heated water control information. , The fuel combustion amount (Ip) of the burner (1) or the water flow amount (Q) of the heat exchanger (2) is controlled, and the target temperature (Ts) is determined based on the maintenance notification hot water discharge control information (Ts ′). ) To the temperature lowering the set value from the hot water temperature (To
The fuel combustion amount (Ip) of the burner (1) or the water flow amount (Q) of the heat exchanger (2) is controlled so as to maintain the above (1), (2), (3), Hot water supply device according to 4, 5 or 6. 10. The control means (H) maintains the outlet heated water temperature (To) at the target temperature (Ts) changed and set by the target temperature setting means (R) based on the reference outlet heated water control information. , The fuel combustion amount (Ip) of the burner (1) or the water flow amount (Q) of the heat exchanger (2) is controlled, and the target temperature is changed with time based on maintenance hot water discharge control information. It is configured to control the fuel combustion amount (Ip) of the burner (1) or the water flow amount (Q) of the heat exchanger (2) so that the outlet heated water temperature (To) is gradually increased or decreased. The hot water supply device according to claim 1, 2, 3, 4, 5, or 6. 11. The control means (H) maintains the outlet heated water temperature (To) at the target temperature (Ts) changed and set by the target temperature setting means (R) based on the reference outlet heated water control information. In addition, the fuel combustion amount (Ip) of the burner (1) or the water flow amount (Q) of the heat exchanger (2) is controlled, and the hot water supply operation is stopped by a stop command based on the maintenance notification hot water discharge control information. Along with this, the setting state of the target temperature setting means (R) is changed to the minimum temperature setting state.
The hot water supply device according to 8, 9, or 10. 12. The control means (H) operates the ignition means (8) to burn the burner (1) to supply hot water based on the reference hot water supply control information in response to a hot water supply command. Based on the maintenance notification hot water discharge control information, the time from the instruction of the hot water supply command to the start of combustion of the burner (1) is based on the reference hot water discharge control information. 6. The operation of the ignition means (8) is controlled so as to be longer than in the state.
The hot water supply device according to 6, 7, 8, 9, 10 or 11. 13. The control means (H) reduces the hot water supply amount per unit time based on the maintenance notification hot water discharge control information as compared with the operating state based on the reference hot water discharge control information. The hot water supply amount adjusting means (Z) is configured to be adjusted.
The hot water supply device according to 5, 6, 7, 8, 9, 10, 11 or 12.