JP5184441B2 - Heat source machine for heating - Google Patents

Description

  The present invention relates to a heating heat source device that supplies a heat medium to a radiator provided in a heater.

  2. Description of the Related Art Conventionally, a heating apparatus that includes a heat exchanger through which a heat medium flows, a burner that heats the heat medium via the heat exchanger, and a controller that controls combustion of the burner, and includes a thermal valve and a heating radiator. 2. Description of the Related Art A heating heat source device that supplies a heat medium to a circulation circuit is known (see, for example, Patent Document 1).

  In the thing of patent document 1, the temperature detection mechanism which detects the temperature of the heat medium supplied to a heat exchanger is provided, and when the temperature of the heat medium detected by a temperature detection mechanism reaches a predetermined freezing temperature, anti-freezing operation The controller executes ignition delay control for igniting the burner after the ignition delay time has elapsed from the start of the freeze prevention operation. As a result, the heat medium flowing through the heat exchanger rises to the set temperature before the heat valve is opened, and the heated heat medium is prevented from freezing without being supplied to the heating circuit or the radiator. It is possible to prevent the operation from being completed.

Utility Model Registration No. 2505767

  In the above-mentioned Patent Document 1, the ignition delay control is executed only at the start of the freeze prevention operation. However, the ignition delay control is executed even at the start of the normal heating operation, and the in-machine circulation amount is caused by clogging of the bypass or the like. When the temperature is small, it is conceivable to prevent the generation of noise due to boiling of the heat medium and the deterioration of durability due to the heat exchanger and other parts becoming high temperature. However, if ignition delay control is executed every time the heating operation is started, rapid heating is hindered and convenience is significantly reduced.

  An object of this invention is to provide the heat-source equipment for heating which can prevent generation | occurrence | production of noise and a fall of durability, reducing the convenience as much as possible in view of the above point.

  In order to achieve the above object, the present invention comprises a heat exchanger through which a heat medium flows, a burner that heats the heat medium via the heat exchanger, and a controller that controls combustion of the burner. A heating heat source device that supplies a heating medium to a heating circulation path in which a heat radiator is interposed, and the controller executes ignition delay control that ignites the burner after the ignition delay time has elapsed since the start of heating operation. A predetermined time set shorter than the time required to close the thermal valve is stored in advance, and when the heating operation is restarted after the heating operation is completed, the ignition delay is Immediate ignition control is performed in which the execution of the control is prohibited and the burner is immediately ignited.

  According to the present invention, the controller executes the ignition delay control for igniting the burner after the ignition delay time has elapsed from the start of the heating operation, so even if the in-machine circulation amount is small due to clogging of the bypass path, etc. It is possible to prevent the generation of noise due to the boiling of the heat medium and the deterioration of durability due to the high temperature state of equipment such as a heat exchanger.

  In addition, the controller executes the immediate ignition control when the heating operation is resumed between the end of the heating operation and the elapse of the predetermined time. Since the thermal valve is not completely closed until the predetermined time has elapsed since the end of the heating operation, the circulating flow rate of the heat medium can be secured to some extent even if the burner is ignited as it is, It is possible to prevent a decrease in durability. Compared with the case where the ignition delay control is executed every time the heating operation is started, when the operation is resumed within the predetermined time, the burner is immediately ignited, and quick heating can be performed. Can be improved.

Explanatory drawing which shows embodiment of the heat-source equipment for heating of this invention. The flowchart which shows the action | operation of the heat-source equipment for heating of embodiment.

  As shown in FIG. 1, a heating heat source device 1 according to an embodiment of the present invention heats hot water as a heat medium and supplies it to a panel heater 2 and a bathroom heating dryer 3 as a heating device via a heating circulation path. To supply. In the present embodiment, the heating system S is constituted by the heating heat source device 1, the panel heater 2, and the bathroom heating dryer 3.

  The heating heat source unit 1 circulates the heat exchanger 12 that heats the hot water by the combustion of the burner 11, the water temperature sensor 13 that detects the temperature of the hot water supplied from the heat exchanger 12, and the hot water in the heating circulation path. A circulation pump 14, an expansion tank 15 that absorbs the expansion of hot water in the heating circuit, a bypass 16 that returns the hot water supplied from the heat exchanger 12 to the heat exchanger 12, and a controller that controls the combustion of the burner 11. 17.

  Further, the heating heat source unit 1 has a gas supply pipe 18 that supplies fuel gas to the burner 11, two gas electromagnetic valves 18 a and 18 b that open and close the gas supply pipe 18, and a fuel gas supply amount to the burner 11. A gas proportional valve 18c to be adjusted and a combustion fan 19 for supplying combustion air to the burner 11 are provided.

  The hot water heated by the heating heat source unit 1 is supplied to the first heating circuit 21 in which the radiators 2a of the three panel heaters 2 are interposed in parallel. The hot water heated by the heating heat source unit 1 branches from the first heating circuit 21 and is also supplied to the second heating circuit 31 in which the radiator 3a of the bathroom heating dryer 3 is interposed. The The hot water returned from the heating circulation paths 21 and 31 is heated again by the heat exchanger 12 and supplied to the heating circulation paths 21 and 31.

  In the first heating circulation path 21, three thermal valves 4 that are controlled to open and close by the controller 17 are provided corresponding to the panel heaters 2. The second heating circuit 31 is provided with a thermal valve 3b that is controlled to be opened and closed by a controller (not shown) of the bathroom heating dryer 3. Each panel heater 2 is also provided with a thermal valve 2b that is controlled to be opened and closed by a controller (not shown) for the panel heater 2.

  The thermal valves 2b, 3b, and 4 include a valve body (not shown) that opens and closes by expansion / contraction of a thermal expansion body (not shown) such as a wax element, and a heater (not shown) that heats the thermal expansion body. Prepare. When the thermal valves 2b, 3b, and 4 are energized, the thermal expansion body is heated and expanded by the heater to open the valve body. When the thermal valves 2b, 3b, and 4 are de-energized, the heater generates heat. Heating of the expansion body is stopped, the thermal expansion body contracts, and the valve body closes. Further, the thermal valves 2b, 3b, 4 of the present embodiment require a time of 1 minute until the valve is fully opened from the closed state, and is slightly more than 4 minutes until the valve is completely closed from the opened state. I use something that takes time.

  The controller 17 is communicably connected to a controller (not shown) of the panel heater 2 and the bathroom heater / dryer 3, and receives a signal when the operation of each device 2, 3 starts or ends, 3. Understand the driving status of 3. And the controller 17 will start the heating operation of the heat-source equipment 1 for heating, when the signal of the operation start of any apparatus is received, and the operation | movement of an apparatus is complete | finished to all by receiving the signal of an operation end. If it becomes, the heating operation of the heat source unit 1 for heating is ended.

  In addition, when the controller 17 receives the operation start signal of any of the three panel heaters 2, the controller 17 energizes the corresponding thermal valve 4 to start the operation of the heating heat source unit 1. Further, when the operation of all the devices is finished, the energization to the three thermal valves 4 corresponding to the three panel heaters 2 is turned off.

  The controller 17 includes a timing mechanism (timer) (not shown), and stores in advance an ignition delay time and a predetermined time. In this embodiment, the ignition delay time is set as the thermal valves 2b, 3b, The predetermined time is set to 3 minutes, which is shorter than the time required to close the thermal valves 2b, 3b, and 4.

  Further, the controller 17 reduces the opening of the gas proportional valve 18c during operation of the panel heater 2 and supplies hot water of a predetermined low temperature, for example, 60 ° C., to the first heating circulation path 21, and the bathroom heating dryer 3, the opening of the gas proportional valve 18 c is increased and a predetermined high temperature, for example, 80 ° C. hot water is supplied to the second heating circulation path 31. When the panel heater 2 and the bathroom heater / dryer 3 are simultaneously operated, high-temperature (80 ° C.) hot water is also supplied to the first heating circuit 21. At this time, each panel heater 2 adjusts so that the heat radiation amount per unit time becomes appropriate by repeatedly opening and closing the thermal valve 2b.

  Next, with reference to FIG. 2, the operation | movement of the controller 17 of the heat-source equipment for heating of embodiment is demonstrated. The controller 17 first checks in STEP 1 whether or not an operation start signal has been received from at least one of the panel heater 2 and the bathroom heater / dryer 3. When the operation start signal is received, the process proceeds to STEP2, and when the operation start signal is received from the panel heater 2, the thermal valve 4 corresponding to the panel heater 2 that has transmitted the operation start signal is energized to open. At the same time, it is checked whether or not one minute, which is the ignition delay time, has elapsed since the operation start signal was received in STEP1. When one minute has passed in STEP2, the process proceeds to STEP3 and the burner 11 is ignited. In the present embodiment, STEP2 and STEP3 correspond to ignition delay control.

  Then, in STEP 4, it is checked whether or not both the panel heater 2 and the bathroom heater / dryer 3 are in an operation end state. When both the panel heater 2 and the bathroom heater / dryer 3 are in an operation-finished state, the process proceeds to STEP 5 where all the heat operated valves 4 are turned off and the gas electromagnetic valves 18a and 18b are closed. Then, the burner 11 is extinguished. And it progresses to STEP6 and it is checked whether 3 minutes which are predetermined time has passed since both the panel heater 2 and the bathroom heating dryer 3 became a driving | running completion state.

  If 3 minutes have not elapsed in STEP 6, the process proceeds to STEP 7 to check whether an operation start signal has been received from at least one of the panel heater 2 and the bathroom heater / dryer 3. When the operation start signal is received in STEP 7, the process returns to STEP 3, and the ignition process is immediately executed without waiting for the one minute ignition delay time of STEP 2. That is, in the present embodiment, STEPs 6, 7, and 3 correspond to immediate ignition control. If the operation start signal is not received in STEP 7, the process returns to STEP 6 to check whether or not 3 minutes have passed. If 3 minutes have passed in STEP 6, the current process is terminated.

  According to the heat source unit 1 for heating according to the embodiment, the controller 17 controls the burner after 1 minute, which is the ignition delay time from the start of the heating operation until the thermal valves 2b, 3b, 4 are actually opened. Ignition delay control for igniting (STEP 2 and 3) is executed. As a result, even if the in-machine circulation amount is small due to clogging of the bypass passage 16 or the like, the burner is ignited after the heat medium can circulate through the first heating circulation passage 21 or the second heating circulation passage 31. Therefore, it is possible to prevent generation of noise due to boiling of the heat medium and deterioration of durability due to a high temperature state of components such as a heat exchanger.

  Further, the controller 17 executes the immediate ignition control (STEPs 6, 7, and 3) when the heating operation is resumed until the predetermined time of 3 minutes elapses from the end of the heating operation. Since the thermal valves 2b, 3b, 4 require a little more than 4 minutes to completely close, the thermal valves 2b, 3b, 4 are completely closed until 3 minutes, which is a predetermined time, from the end of the heating operation. It is in a state where it is not spoken.

  For this reason, even if the burner 11 is ignited as it is, the circulation flow rate of the heat medium can be secured to some extent in the circulation paths 21 and 31, and the durability due to the generation of noise due to boiling of the heat medium and the high temperature of the equipment such as the heat exchanger. It is possible to prevent a decrease in sex. Compared with the case where the ignition delay control is executed every time the heating operation is started, the burner 11 is immediately ignited and the heating can be quickly performed when the operation is resumed within 3 minutes which is a predetermined time. , Can improve convenience.

  In addition, in the said embodiment, although the heat-source equipment 1 for heating used for the heating system S provided with the panel heater 2 and the bathroom heating dryer 3 as a heater was demonstrated, the panel heater 2 or bathroom heating drying is used as a heater. In addition to the heating system S including only the machine 3, the panel heater 2, and the bathroom heating dryer 3, the present invention can be similarly applied to a heating system S including other heaters such as floor heating.

  In the above embodiment, the ignition delay time is set to 1 minute and the predetermined time is set to 3 minutes. However, the ignition delay time and the predetermined time are not limited to the above settings. It can be appropriately changed based on the opening / closing time. In the above embodiment, the ignition delay time is set to the same time as the time required for opening the thermal valve. However, the present invention is not limited to this. It may be set shorter than the time required for. When the ignition delay time is shorter than the time required for opening the thermal valve, the heating circuit is used even if the opening degree of the thermal valve is small due to clogging of the bypass 16 or the like. What is necessary is just to set ignition delay time so that it may become the opening which can ensure an appropriate circulating flow volume by 21 and 31. FIG.

DESCRIPTION OF SYMBOLS 1 ... Heat source machine for heating, 11 ... Burner, 12 ... Heat exchanger, 13 ... Water temperature sensor, 14 ... Circulation pump, 15 ... Expansion tank, 16 ... Bypass path, 17 ... Controller, 18 ... Gas supply pipe, 18a, 18b ... gas solenoid valve, 18c ... gas proportional valve, 19 ... combustion fan,
2 ... Panel heater (heater), 2a ... Radiator, 2b ... Thermal valve, 21 ... First heating circuit,
3 ... Bathroom heater / dryer (heater), 3a ... radiator, 3b ... thermal valve, 31 ... second heating circuit,
4 ... Thermal valve,
S: Heating system.

Claims (1)

A heating circulation system comprising a heat exchanger through which a heat medium flows, a burner that heats the heat medium via the heat exchanger, and a controller that controls combustion of the burner, and a thermal valve and a heat radiator are interposed A heating source for supplying a heat medium to the road,
The controller executes ignition delay control for igniting the burner after the ignition delay time has elapsed from the start of the heating operation, stores in advance a predetermined time shorter than the time required for closing the thermal valve, and ends the heating operation When the heating operation is resumed during a period from the start to the predetermined time, the execution of the ignition delay control is prohibited and the immediate ignition control for immediately igniting the burner is executed. Machine.

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