JP5745787B2 - Heat source system - Google Patents

Description

  The present invention relates to a heat source system capable of setting various parameters of a heat source machine by a remote controller.

  As a conventional heat source system, for example, a hot water supply system in which various parameters used for heating operation of a gas water heater can be set by a remote controller for remotely operating the gas water heater is known (for example, Patent Document 1). reference).

  In the hot water supply system described in Patent Document 1, the hot water heater such as the type of fuel gas, the number of the hot water heater, and the exhaust variation is temporarily installed by changing the settable parameters according to the progress of the remote control operation. After that, the model specification parameter indicating the specification of the water heater that does not need to be set again is prevented from being changed by an erroneous operation of maintenance personnel.

Japanese Patent No. 3644418

  Even when the hot water supply system described in Patent Document 1 described above is adopted, when the maintenance staff operates the remote controller to set parameters such as correction of the hot water supply temperature, the model specification parameters are erroneously changed. Cannot be completely prevented. If the model specification parameters are erroneously set due to an erroneous operation by maintenance personnel, there is a risk that burner combustion failure or the like will occur.

  The present invention has been made in view of such a background, and an object of the present invention is to provide a heat source system that can more reliably prevent erroneous setting of model specification parameters.

  The present invention has been made to achieve the above object, and relates to a heat source system including a heat source device that performs a heating operation of heating hot water with a heating means, and a remote controller that remotely operates the heat source device.

And, based on the operating condition parameter indicating the condition of the heating operation and the model specification parameter indicating the specification of the heat source machine, a heating control unit that executes the heating operation,
A mode switch provided in the heat source unit;
From the operating condition setting mode in which the operation condition parameter can be set and the model specification parameter cannot be set, which is an initial mode at the start of operation of the heat source machine according to the operation of the mode changeover switch. A setting mode switching unit for switching to a model specification setting mode in which model specification parameters can be set;
A display provided on the remote control;
When in the operating condition setting mode, the operating condition parameter is set according to a first predetermined operation of the remote controller, and when in the model specification setting mode, a model specification setting screen is displayed on the display, By setting the model specification parameter according to a second predetermined operation of the remote controller, the operating condition parameter can be set only by operating the remote controller, and the remote controller is operated for the model specification parameter. A parameter setting unit that can be set by operating the mode switch provided in the heat source machine is provided (first invention).

  According to the first aspect of the invention, when setting the model specification parameter, the operation condition parameter is unnecessary when setting the operation condition parameter. It is necessary to switch from the operating condition setting mode to the model specification setting mode. Therefore, when the operating condition parameter is set by the operation of only the remote controller, it can be surely prevented that the maintenance staff of the heat source machine sets the model specification parameter by mistake.

The setting mode switching unit switches from the model specification setting mode to the operation condition setting mode when a third predetermined operation of the remote controller is performed in the model specification setting mode. In the model specification setting mode, When the third predetermined operation of the remote control is not performed within a first predetermined time from the time when the second predetermined operation of the remote control is performed, the model specification setting mode is switched to the operation condition setting mode. (Second invention).

  The setting mode switching unit is configured to start the operation from the model specification setting mode when the remote controller is not operated within a second predetermined time from the time when the operation condition setting mode is switched to the model specification setting mode. Switching to the condition setting mode (third invention).

  According to the second and third inventions, the continuation of the model specification setting mode avoids maintaining the state in which the model specification parameter can be set by the second predetermined operation of the remote controller, and It is possible to prevent an erroneous setting of the model specification parameter by a maintenance staff of the heat source machine.

  Further, the model specification setting mode is switched to the operation condition setting mode when the first predetermined time or the second predetermined time elapses. Therefore, the maintenance staff of the heat source machine does not need to perform an operation of returning from the model specification setting mode to the operation condition setting mode when switching to the model specification setting mode and setting the model specification parameter.

The block diagram of the heat-source system of this invention. The flowchart of a model specification setting mode. The flowchart of a maintenance setting mode. Explanatory drawing of the display mode of a remote control in model specification setting mode and maintenance setting mode.

  An embodiment of the present invention will be described with reference to FIGS. Referring to FIG. 1, a heat source system 1 of the present embodiment includes a heat source device 2 that performs a hot water supply operation by a gas combustion method, and a remote controller 3 that is connected to the heat source device 2 via a communication cable 4.

  The heat source device 2 includes a heat exchanger 6 connected to the hot water supply pipe 5, a burner 7 for heating the heat exchanger 6, and a controller 20, and heats hot water flowing through the hot water supply pipe 5 by burning the burner 7. A hot water supply operation is performed by heating with the exchanger 6. The burner 7 and the heat exchanger 6 constitute the heating means of the present invention.

  The controller 20 is an electronic board housed in the housing of the heat source device 2, and is mounted with a CPU (Central Processing Unit), a memory, a momentary mode changeover switch 21 and the like (not shown). Maintenance personnel or the like of the heat source system 1 can operate the mode changeover switch 21 mounted on the electronic board by removing the panel member constituting the housing of the heat source device 2.

  By causing the CPU of the controller 20 to execute the control program for the heat source system 1, the CPU can set the model specification parameters shown in Table 1 below according to the operation of the mode switch 21. A setting mode switching unit 22 that switches between a mode and a maintenance setting mode in which setting of model specification parameters is impossible and maintenance parameters can be set, a parameter setting unit 23 that sets model specification parameters and maintenance parameters, and a heat source unit 2 It functions as the heating control unit 24 that executes the hot water supply operation.

  The heating control unit 24 performs the hot water supply operation based on various operation parameters including the model specification parameters and the maintenance parameters (corresponding to the operation condition parameters of the present invention) shown in Table 1 above.

  The model usage parameters shown in Table 1 above are the heat sources such as the type of fuel gas (natural gas, LPG (liquefied petroleum gas), etc.) and exhaust variations (wall mounted type, PS (Pipe Space) installation type, alcoop installation type, etc.) It is a highly important parameter that does not need to be reset once it has been set at the time of system manufacture or installation.

  On the other hand, the maintenance parameter is used when the user of the heat source system has a difference between the actual temperature or the water level and the detected value by the heat source device, such as correction of hot water supply temperature or correction of the hot water level during hot water operation. This is a relatively insignificant parameter that is set by the maintenance personnel of the heat source system according to the demand of the system.

  Therefore, in the heat source system 1, the maintenance parameters can be set only by operating the remote controller 3, and the model specification parameters are operated by operating the mode changeover switch 21 of the heat source device 2 before operating the remote controller 3. Therefore, the model specification parameter is prevented from being erroneously set when the maintenance parameter is set. Hereinafter, these configurations will be described with reference to the flowcharts shown in FIGS. 2 and 3.

  STEP 1 in FIG. 2 is processing by the setting mode switching unit 22. The setting mode switching unit 22 determines whether or not the mode switching switch 21 provided in the heat source device 2 is operated in STEP 1 and proceeds to STEP 2 when the mode switching switch 21 is operated. In this case, the processing after STEP 2 is a “model specification setting mode” in which model specification parameters can be set according to the switch operation of the remote controller 3.

  In STEP2, the setting mode switching unit 22 starts the first timer (the timer time of the first timer corresponds to the first predetermined time of the present invention). The first timer is set in the maintenance setting mode when a first predetermined time (for example, 10 minutes) elapses without the operation of the remote controller 3 after the operation of the mode changeover switch 21 in STEP 1 and the remote controller 3 is not operated. It is for returning to

  On the other hand, when the mode changeover switch 21 is not operated in STEP1, the process proceeds to STEP50 in FIG. In this case, the processing after STEP 50 in FIG. 3 becomes a “maintenance setting mode” in which maintenance parameters can be set according to the switch operation of the remote controller 3.

  As shown in FIGS. 4A and 4B, the remote controller 3 has a display 30 on which the setting status of the heat source unit 1 is displayed, and an operation switch for switching between the operating state and the standby state of the heat source unit. 31, an automatic switch 32 for instructing execution of a hot water filling operation for supplying a predetermined amount of hot water to a bathtub (not shown), a sashimi switch 33 for instructing execution of a chasing operation for heating hot water in the bathtub, various operations A menu switch 34 for selecting a menu, a DOWN switch 35, an UP switch 36, a determination switch 37, and a return switch 38 are provided.

[Model specification setting mode]
In the model specification setting mode, the parameter setting unit 23 sets model specification parameters according to the switch operation of the remote controller 3 by maintenance personnel of the heat source system 1 or the like.

  In the loop composed of STEP 3 and STEP 20 in FIG. 2, in STEP 3, the parameter setting unit 23 determines whether or not the DOWN switch 35, the UP switch 36, and the operation switch 31 are operated simultaneously (special operation of the switch). The switching unit 22 determines whether the first timer has expired.

  When the first timer expires in STEP 20, that is, when the first predetermined time has passed without the operation of the remote controller 3 since the mode changeover switch 21 was operated in STEP 1, the process proceeds to STEP 10. Then, the setting mode switching unit 22 switches from the model specification setting mode to the maintenance setting mode and returns to STEP1.

  In STEP 3, when the DOWN switch 35, the UP switch 36, and the operation switch 31 are simultaneously operated (the switch has a special operation), the process proceeds to STEP 4. STEP4 is a process by the setting mode switching unit 22, and the setting mode switching unit 22 starts a second timer (the timer time of the second timer corresponds to the second predetermined time of the present invention).

  The second timer is for switching to the maintenance setting mode when a second predetermined time (for example, 1 minute) elapses without the next operation of the remote controller 3 since the operation of the remote controller 3 is performed. is there. In the next STEP 5, the parameter setting unit 23 displays the model specification setting screen 40 on the display 30 of the remote controller 3 as shown in FIG.

  Then, the parameter setting unit 23 determines whether or not the UP switch 36 or the DOWN switch 35 is operated in STEP 6 while repeatedly executing the loop of STEP 6 to STEP 9, and determines whether or not the decision switch 37 is operated in STEP 7. Then, it is determined whether or not the DOWN switch 35, the UP switch 36, and the operation switch 31 are operated simultaneously (special operation of the switch). In addition, the setting mode switching unit 22 determines whether or not the second timer has timed out in STEP8.

  When the UP switch 36 or the DOWN switch 35 is operated in STEP 6, the process branches to STEP 30, and the setting mode switching unit 22 restarts the second timer (resets the time count of the second timer and restarts the time count). . In STEP 31, the parameter specification unit 23 changes the model specification parameter to be set, and the process returns to STEP 6. FIG. 4A illustrates a state in which the gas type is set as the model specification parameter.

  In FIG. 4A, the setting number “A1” is displayed, and the setting content “A” is displayed. The setting number “A1” indicates the gas type, and the setting content “A” indicates, for example, natural gas, and when the UP switch 36 is operated, the setting number changes from “A1” (gas type) to “A2” (exhaust gas). The setting content is changed from “A” (wall-hanging type), for example, to “B” (PS installation type), for example, by operating a determination switch 37 in STEP 7 described later.

  When the decision switch 37 is operated in STEP 7, the process branches to STEP 40, and the parameter setting unit 23 changes the model specification parameter to the displayed content. When the determination switch 37 is operated in the display state of FIG. 4A, for example, the setting content is changed from “A” (natural gas) to “B” (LPG). Note that the switch operation of the remote controller 3 in STEP 3 to STEP 7 corresponds to the second predetermined operation of the remote controller of the present invention.

  When the DOWN switch 35, the UP switch 36, and the operation switch 31 are simultaneously operated in STEP 9 (there is a special operation of the switch), the process goes out of the loop and proceeds to STEP 10, and the setting mode switching unit 22 performs maintenance from the model specification setting mode. Switch to the setting mode and return to STEP1. Note that the simultaneous operation of the DOWN switch 35, the UP switch 36, and the operation switch 31 in STEP 9 corresponds to a third predetermined operation of the remote controller of the present invention.

  When the second timer expires in STEP 8, the process branches to STEP 10, and the setting mode switching unit 22 switches from the model specification setting mode to the maintenance setting mode and returns to STEP 1.

[Maintenance setting mode]
In the maintenance setting mode, the parameter setting unit 23 sets maintenance parameters according to the switch operation of the remote controller 3 by maintenance personnel of the heat source system 1 or the like.

  In STEP50 of FIG. 3, when the DOWN switch 35, the UP switch 36, and the operation switch 31 are simultaneously operated (there is a special operation of the switch), the process proceeds to STEP51. STEP 51 is a process by the setting mode switching unit 22, and the setting mode switching unit starts the third timer.

  This third timer returns to STEP 1 in FIG. 2 when a third predetermined time (for example, 1 minute) has elapsed since the next operation of the remote controller 3 has not been performed, and STEP 1 in FIG. This is for returning to the waiting state for the operation of the mode changeover switch 21 and the simultaneous operation of the DOWN switch 35, the UP switch 36 and the operation switch 31 in STEP50. In the next STEP 52, the parameter setting unit 23 displays a maintenance setting screen 50 on the display 30 of the remote controller 3, as shown in FIG.

  Then, the parameter setting unit 23 determines whether or not the UP switch 36 or the DOWN switch 35 is operated in STEP 53 while repeatedly executing the loop of STEP 53 to STEP 56, and determines whether or not the decision switch 37 is operated in STEP 54. Then, it is determined whether or not the DOWN switch 35, the UP switch 36, and the operation switch 31 are operated simultaneously (special operation of the switch). Further, the setting mode switching unit 22 determines whether or not the third timer has timed out in STEP55.

  When the UP switch 36 or the DOWN switch 35 is operated in STEP 52, the process branches to STEP 60, and the setting mode switching unit 22 restarts the third timer (resets the time measured by the third timer and restarts the time measurement). . In STEP 61, the parameter setting unit 23 changes the maintenance parameter to be set and returns to STEP 53. FIG. 4B illustrates a state in which hot water temperature correction is set as a maintenance parameter.

  In FIG. 4B, the setting number “06” is displayed, and the setting content “A” is displayed. The setting number “06” indicates hot water temperature correction, and the setting content “A” indicates, for example, + 1 ° C. When the UP switch 36 is operated, the setting number is changed from “06” (hot water temperature correction) to “07” (hot water level correction), and the setting contents are changed by operating the determination switch 37 in STEP 54 described later. For example, the current value “A” (± 0) is changed to “B” (−20 mm).

  When the determination switch 37 is operated in STEP 54, the process branches to STEP 70, and the parameter setting unit 23 changes the maintenance parameter. When the determination switch 37 is operated in the display state of FIG. 4B, for example, the setting content is changed from “A” (+ 1 ° C.) to “B” (+ 2 ° C.). Note that the switch operation of the remote controller 3 in STEP 50 to STEP 54 corresponds to the first predetermined operation of the remote controller of the present invention.

  When the DOWN switch 35, the UP switch 36, and the operation switch 31 are simultaneously operated in STEP 56 (the switch has a special operation), the process goes through the loop and returns to STEP 1 in FIG. When the third timer expires in STEP 55, the process returns to STEP 1 in FIG.

  As described above, in the “maintenance setting mode” that is the initial setting, maintenance personnel and the like can set each maintenance parameter only by operating the switch of the remote controller 3. On the other hand, in order to switch to the “model specification setting mode”, maintenance personnel and the like go to the installation location of the heat source device 2 to remove the panel portion of the housing, and set the mode switch 21 mounted on the controller 20. It is necessary to operate.

  Therefore, it is possible to more reliably prevent the model specification parameter from being erroneously set when maintenance personnel set the maintenance parameter in the “maintenance setting mode” after the heat source system 1 is installed.

  Further, the setting mode switching unit 22 operates the switch of the remote controller 3 after the mode switching switch 21 is operated in STEP 1 of FIG. 2 to switch from the “maintenance setting mode” to the “model specification setting mode”. If the first predetermined time (for example, 10 minutes) elapses, the “model specification setting mode” is returned to the “maintenance mode”. As a result, the state of the “model specification setting mode” is left unattended and the model specification parameter is prevented from being erroneously changed.

  Further, the setting mode switching unit 22 performs the second predetermined time (for example, 1 minute) without performing the next switch operation of the remote controller 3 after the switch operation of the remote controller 3 is performed in STEP 3, STEP 6, and STEP 7 of FIG. ) Also returns from “model specification setting mode” to “maintenance setting mode”. As a result, the state of the “model specification setting mode” is left unattended and the model specification parameter is prevented from being erroneously changed.

  In this way, since the determination switch 37 is operated in STEP 7 of FIG. 2 and any model specification parameter is set, the second predetermined time (for example, 1 minute) is operated without operating the switch of the remote controller 3. ), The “model specification setting mode” is switched to the “maintenance setting mode”. Therefore, a maintenance person or the like can omit the operation of STEP 9 in FIG. 2 (simultaneous operation of the DOWN switch 35, the UP switch 36, and the operation switch 31).

  In the present embodiment, as the heat source system of the present invention, the heat source system 1 including the heat source unit 2 that performs the hot water supply operation by the gas combustion method is shown. The present invention can also be applied to a heat source system including this kind of heat source apparatus.

  In the present embodiment, the setting mode switching unit 22 performs the “maintenance setting mode” when the switch operation of the remote controller 3 is not performed in the “model specification setting mode” for the first predetermined time or the second predetermined time. However, even if this process is not performed, the effects of the present invention can be obtained.

  DESCRIPTION OF SYMBOLS 1 ... Heat source system, 2 ... Heat source machine, 3 ... Remote control, 20 ... Controller, 21 ... Mode change switch, 22 ... Setting mode switching part, 23 ... Parameter setting part

Claims (3)

In a heat source system comprising a heat source device for performing a heating operation for heating hot water with a heating means, and a remote controller for remotely operating the heat source device,
Based on an operation condition parameter indicating the heating operation condition and a model specification parameter indicating the specification of the heat source machine, a heating control unit that executes the heating operation,
A mode switch provided in the heat source unit;
From the operating condition setting mode in which the operation condition parameter can be set and the model specification parameter cannot be set, which is an initial mode at the start of operation of the heat source machine according to the operation of the mode changeover switch. A setting mode switching unit for switching to a model specification setting mode in which model specification parameters can be set;
A display provided on the remote control;
When in the operating condition setting mode, the operating condition parameter is set according to a first predetermined operation of the remote controller, and when in the model specification setting mode, a model specification setting screen is displayed on the display, By setting the model specification parameter according to a second predetermined operation of the remote controller, the operating condition parameter can be set only by operating the remote controller, and the remote controller is operated for the model specification parameter. A heat source system comprising a parameter setting unit configured to be set by operating the mode changeover switch provided in the heat source unit before . The heat source system according to claim 1,
The setting mode switching unit
When the third predetermined operation of the remote control is performed in the model specification setting mode, the model specification setting mode is switched to the operation condition setting mode,
In the model specification setting mode, when the third predetermined operation of the remote control is not performed within a first predetermined time from the time when the second predetermined operation of the remote control is performed, the operating condition is set from the model specification setting mode. A heat source system characterized by switching to a setting mode. The heat source system according to claim 1 or 2,
The setting mode switching unit sets the operation condition from the model specification setting mode when the remote controller is not operated within a second predetermined time from the time when the operation condition setting mode is switched to the model specification setting mode. A heat source system characterized by switching to a mode.

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