JP5197038B2 - Gas sauna equipment - Google Patents

Description

  The present invention relates to a gas sauna apparatus using gas as fuel.

  In recent years, gas sauna devices using gas as a heat source have become widespread and installed in most large-scale bath facilities.

  When the gas sauna device breaks down, there is a problem that it is difficult to perform repair work due to the structure unique to the sauna. This is because the entrance / exit of the machine room in which the gas sauna apparatus is installed is often provided in the sauna room, and it is difficult for an operator to enter the machine room when the gas sauna apparatus breaks down. In particular, in the case of a female sauna room, it is difficult to perform repair work during business. If the gas sauna device fails and cannot be repaired, the bathroom equipment contractor will suffer a great deal of damage.

  The failure of the gas sauna device is most often caused by the combustion device stopping due to non-ignition of the burner.

  Therefore, the present applicant has invented and filed an application for a combustion apparatus that can avoid the influence of combustion stop without interrupting combustion even when a part of the combustion apparatus fails (Patent Document 1). ).

Patent Document 1 discloses a combustion apparatus in which at least a part of a fuel unit, an ignition unit, and a flame detection unit are configured as at least two series of element groups that can be individually operated, and the element groups are switched in a rotational manner. It is disclosed.
WO2005 / 080876

  Patent Document 1 is intended for a widely known general combustion device. Most of the general combustion devices are of the forced air system, and pre-purge is performed by a forced air fan before ignition to stop combustion. At the same time, the blower stops.

  Therefore, in the combustion apparatus of patent document 1, when switching a combustion apparatus, a blower is also stopped simultaneously with the stop of one series of combustion apparatuses. Then, before the ignition of the other series of combustion devices, the blower is started again, pre-purge for removing unburned gas is performed, and thereafter, the other series of ignition is performed. In this way, the blower stops simultaneously with the stop of the combustion device.

  In a general combustion apparatus, most are an insufflation ventilation system, However, An induction ventilation system must be used very rarely. In particular, in a combustion apparatus in a gas sauna apparatus, an induction blower is used in order to prevent the combustion gas from leaking by setting the pressure in the combustion chamber to a negative pressure.

When the combustion device in which the induction blower stops simultaneously with the stop of the combustion device is applied to the gas sauna device, there are the following problems.
(1) Unlike a boiler having a water-cooled wall, in the gas sauna device, the wall of the combustion chamber reaches 400 ° C to 500 ° C, so that the ignition device and the flame detector may be damaged or deformed by the heat from the combustion chamber. is there.
(2) The induced blower may break down due to the residual heat of the induction fan and the high-temperature combustion gas remaining in the combustion chamber.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a Gaussian sauna device that is less likely to cause a failure.

The present invention relates to a gas sauna device that burns fuel gas and heats a sauna chamber by radiating heat from a heat radiating pipe through which the combustion gas passes, and combusts the fuel gas in a burner, and controls the operation of the combustion device A control means that is provided in a machine room adjacent to the sauna room, supplies ventilation air to the combustion device and discharges combustion gas of the combustion device , supply of fuel gas to the burner, and and a gas solenoid valve to perform blocking, the combustion device is provided with an ignition device for igniting the burner, and a flame detector for detecting a flame of the burner, wherein the ignition device for one of said burners and wherein at least one flame detector and a plurality of systems constituted a combustion apparatus by provided two or more, the burner and the gas solenoid valve closing is in operation with the to digest Periodic switching of operation of the combustion apparatus is performed so that the combustion of the combustion system is stopped and the gas solenoid valve is opened after a lapse of a predetermined time so that the other combustion system is stopped and the burner is ignited. The ventilation equipment sucks combustion air from the machine room and guides it to the burner, and supplies the outside air to the machine room and an induction blower that discharges combustion gas to the outside of the machine room. An air supply blower, wherein the induction blower and the air supply blower are continuously operated regardless of the operation stop of the combustion device.

  According to the present invention, since the combustion apparatus is composed of a plurality of systems, and the operation of the system is periodically switched, it is difficult for the combustion apparatus to fail. Moreover, since the induction blower and the supply air blower are continuously operated regardless of the operation stop of the combustion device, the temperature in the combustion chamber is lowered, and failure of each device can be prevented. Therefore, it is possible to obtain a gas sauna device that is unlikely to cause a failure.

  Hereinafter, a gas sauna apparatus 100 according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a sauna room and a machine room, and FIG. 2 is a schematic view showing a gas sauna device 100.

  First, with reference to FIG. 1, the sauna room 1 in which the gas sauna apparatus 100 is installed is demonstrated.

  The sauna room 1 is formed in a rectangular shape in plan view, and is provided with an entrance / exit 1a. The machine room 2 in which various devices of the gas sauna apparatus 100 are installed has a structure in which an entrance 2 a is provided in the sauna room 1 and enters and exits through the sauna room 1. This is because when the entrance / exit 2a of the machine room 2 is provided outside the sauna room 1, a dedicated passage leading to the machine room 2 needs to be provided, and the installation space becomes large.

  The machine room 2 is surrounded by a front wall 3a and side walls 3b, 3c separating the inside of the sauna room 1, and a back wall 3d separating the outside. As described above, the sauna room 1 and the machine room 2 are arranged adjacent to each other with the front wall 3a and the side walls 3b and 3c therebetween. In addition, the entrance / exit 2a of the machine room 2 is provided in the front wall 3a.

  In the sauna room 1, a gas sauna heater 4 is installed across the side wall 3 b of the machine room 2. The space where the gas sauna heater 4 is installed is partitioned by a protective fence 5.

  In the sauna room 1, multistage benches 6a to 6e having the gas sauna heater 4 side as the lowest stage are installed, and a bench 6f on which two persons can sit is also installed on the side of the side wall 3c of the machine room 2.

  The gas sauna heater 4 includes a gas far infrared sauna heater that radiates far infrared rays into the sauna chamber 1 to heat the sauna chamber 1 and an air convection type gas sauna heater that heats the sauna chamber 1 by high-temperature air convection. However, in this embodiment, a case where a gas far infrared sauna heater is used will be described.

  Next, the gas sauna apparatus 100 will be described with reference to FIG.

  The gas sauna device 100 is installed in the sauna chamber 1, a gas sauna heater 4 that heats the sauna chamber 1, a combustion device 11 that burns fuel gas in the burner 10, and a combustion air provided in the machine chamber 2 to the combustion device 11. And a ventilation facility 12 for discharging the combustion gas of the combustion apparatus 11.

  The gas sauna heater 4 is a heater that heats the sauna chamber 1 using gas as fuel, a combustion cylinder 15 in which a flame due to combustion in the burner 10 extends, and a radiation tube that is meandered in a U-shape and through which combustion gas passes. 16 The combustion cylinder 15 and the radiation tube 16 are heated to high temperatures by the flame and the combustion gas, and the sauna room 1 is heated by the far infrared rays radiated from the combustion cylinder 15 and the radiation tube 16. The heat radiating tube 16 is configured by inserting and connecting a plurality of tubes.

  The burner 10 is supplied with fuel gas through the fuel pipe 18 when the gas electromagnetic valve 17 is opened, and ignited by an ignition device 31 (see FIG. 3) described later. Further, combustion air is supplied to the burner 10 through the blower box 19.

  The ventilating equipment 12 includes an induction blower 20 that sucks combustion air from the inside of the machine room 2 and guides it to the burner 10 and discharges combustion gas to the outside of the machine room 2, and an air supply blower that supplies outside air to the machine room 2 21.

  The induction blower 20 is accommodated together with the gas solenoid valve 17 in an outdoor unit 22 provided in the machine room 2.

  The induction blower 20 is connected to the radiation tube 16 via the suction duct 23. The suction duct 23 is connected to the radiation tube 16 through a through-hole 29 provided in the side wall 3 b of the machine room 2.

  The induction blower 20 sucks combustion air from an intake port 19 a formed in the blower box 19 and guides it to the burner 10. Further, the combustion gas generated by the combustion by the burner 10 is sucked through the radiation pipe 16 and the suction duct 23 and discharged to the exhaust duct 24. The exhaust duct 24 extends outside the machine room 2 and is opened to the atmosphere. Therefore, the combustion gas exhausted by the induction blower 20 is released to the outdoors through the exhaust duct 24.

  The blow box 19 is provided with a wind pressure switch 25 for confirming that the pressure in the combustion cylinder 15 and the radiation tube 16 is smaller than the atmospheric pressure. In this way, the pressure of the combustion cylinder 15 and the radiation pipe 16 is always set to a negative pressure by the induction blower 20, and the wind pressure switch prevents the combustion gas harmful to the human body from leaking into the sauna chamber 1 from the connecting portion of the heat radiating pipe 16. 25.

  In a general combustion apparatus, a forced air blower that forcibly supplies combustion air by pushing it in is used as a blower that supplies combustion air to a burner. This is because the forced air blower supplies combustion air having a low temperature, so that the amount of blown air is small, and the wings and the motor are small and inexpensive. Here, the sauna is installed in a high-risk place where a large number of naked and defenseless people are present in a high-temperature room, and in recent years there has been a personal accident caused by gas appliances due to inadequate ventilation. Therefore, high safety is required. Therefore, in the gas sauna device 100, in order to prevent the combustion gas from leaking by setting the pressure of the combustion cylinder 15 and the radiation tube 16 to a negative pressure, the induction blower 20 is used instead of the forced air blower, and the combustion air is used as the induction blower 20. And is supplied to the burner 10. That is, the induction fan 20 is used in consideration of safety.

  The air supply blower 21 is provided on the back wall 3 d of the machine room 2 that separates the machine room 2 from the outside, and supplies outside air into the machine room 2. The air supplied into the machine room 2 by the air supply blower 21 is sucked by the induction blower 20 and guided to the burner 10 from the intake port 19a of the blower box 19 as combustion air. And after combustion in the burner 10, it is discharged | emitted as combustion gas outdoors.

  Thus, the induction blower 20 and the supply air blower 21 ventilate the air in the machine room 2 by operating together with the function of supplying combustion air to the burner and discharging the combustion gas generated by the combustion. It also has a function.

  The induction blower 20 and the supply air blower 21 are operated in conjunction so that the pressure in the machine room 2 becomes larger than the atmospheric pressure. By always keeping the pressure in the machine room 2 larger than the atmospheric pressure, it is possible to prevent air contaminated at a high temperature in the sauna room 1 from entering the machine room 2 through the through hole 29. Therefore, the temperature rise in the machine room 2 is prevented, and the failure of the devices installed in the machine room 2 is prevented.

  That is, the air supply blower 21 has an air volume and a wind pressure capable of keeping the pressure in the machine room 2 larger than the atmospheric pressure even when the induction blower 20 is operating.

  A ventilation port 28 may be provided in the back wall 3d. By providing the ventilation port 28, the air that has not been supplied to the burner 10 among the air that is pumped into the machine room 2 by the air supply blower 21 is exhausted to the outside through the ventilation port 28 due to the high pressure in the machine room 2. Is done.

  A control panel 26 that controls the operation of the gas sauna apparatus 100 is installed in the machine room 2. In the sauna room 1, a temperature sensor 27 is provided as a temperature detector that detects the temperature in the sauna room 1.

  The control panel 26 controls the operation of the combustion apparatus 11 based on the result detected by the temperature sensor 27. Specifically, when the room temperature in the sauna chamber 1 detected by the temperature sensor 27 is smaller than a preset temperature, the combustion device 11 is operated, and the room temperature in the sauna chamber 1 is larger than the preset temperature. In that case, the combustion apparatus 11 is controlled to stop.

  Next, the combustion apparatus 11 will be described in detail with reference to FIG. FIG. 3 is a plan view of the combustion apparatus 11. Note that the burner 10 in the present embodiment is a premixed gas burner.

  The combustion device 11 includes an ignition device 31 (31A, 31B) that ignites the burner 10, and a frame rod 32 (32A, 32B) as a flame detector that detects the flame of the burner 10.

  The ignition device 31 includes a high voltage transformer 33 for generating a high voltage and an ignition rod 34 for generating a spark by the high voltage generated by the high voltage transformer 33.

  The fuel gas supplied to the burner 10 through the fuel pipe 18 flows into the combustion inner cylinder 37 formed in a cone shape from the nozzle 36 at the tip of the burner 10, and the ignition rod 34 is generated by the high voltage generated by the high voltage transformer 33. And the nozzle 36 are ignited by discharge. Then, combustion is started by mixing with combustion air flowing into the combustion inner cylinder 37 from a plurality of air inflow holes 37 a formed in the combustion inner cylinder 37.

  In FIG. 3, a line indicated by a two-dot chain line in the combustion inner cylinder 37 is a flame extending from the burner 10, and a negatively charged electron is generated from the molecule or atom from the flame.

  Since a current flows when a voltage is applied to a negatively charged electron group, this current value is measured by a frame rod 32 provided substantially parallel to the flame. When the measured current value is greater than or equal to the reference value, it is determined that combustion has occurred. Thus, based on the detection result of the frame rod 32, it is determined whether or not the burner 10 is performing combustion. This determination is made by the control panel 26.

  In the present embodiment, the combustion device 11 is provided with two ignition devices 31A and 31B and two frame rods 32A and 32B. The ignition device 31A and the frame rod 32A constitute a combustion device 11A, and the ignition device 31B and the frame rod 32B constitute a combustion device 11B. Thus, the combustion apparatus 11 has a plurality of systems for burning one burner 10.

  The operation of the combustion device 11A and the combustion device 11B is automatically switched periodically at regular intervals by the control of the control panel 26.

  Instead of providing two each of the ignition device 31 and the frame rod 32 as described above, the combustion device 11A and the combustion device 11B are configured by providing only one of the ignition device 31 and the frame rod 32. You may make it do. In this case, the other of the ignition device 31 and the frame rod 32 is commonly used for both the combustion device 11A and the combustion device 11B.

  As described above, the combustion apparatus 11 includes a plurality of systems in which at least one of the ignition device 31 and the frame rod 32 is provided for one burner 10.

  Next, the operation of the gas sauna device 100 will be described with reference to FIG. FIG. 4 is a flowchart showing an operation procedure of the gas sauna device 100. The following procedure is performed by the control panel 26.

  In addition to the control panel 26, a remote operation panel (not shown) capable of remotely monitoring and operating the combustion apparatus 11 is provided at a location different from the machine room 2, for example, at a front desk where personnel are resident.

  The remote control panel is provided with an automatic manual selection switch 41 for selecting whether the operation of the combustion apparatus 11 is switched automatically or by means.

  Hereinafter, a case where the automatic manual selection switch 41 is automatically selected will be described.

  By pressing an activation push button provided on the control panel 26, the activation sequence of the gas sauna device 100 is started.

  First, the air supply blower 21 is activated in step 101, and then the induction blower 20 is activated in step 102. Outside air is supplied into the machine room 2 by the air supply blower 21. In addition, air in the machine room 2 is supplied to the burner 10 through the blower box 19 by the induction blower 20, and is sucked through the combustion cylinder 15 and the radiation pipe 16 and discharged to the outside through the exhaust duct 24. Thus, air circulates when the supply air blower 21 and the induction blower 20 are activated. Further, the air supply blower 21 and the induction blower 20 are operated in conjunction so that the pressure in the machine room 2 becomes larger than the atmospheric pressure.

  Next, in step 103, it is determined whether the induction blower 20 has replaced the gas in the radiant tube 16 a predetermined number of times or more. The number of times of replacement is set to the number of times that unburned gas existing in the radiation tube 16 can be removed. In the present embodiment, after the induction blower 20 is activated, it is determined whether or not the time in which the gas in the radiant tube 16 can be replaced four times has elapsed.

  In the case of a boiler having a water-cooled wall that is widely distributed, heat exchange is performed between the combustion gas and water. On the other hand, in the gas sauna device 100, heat exchange is performed between the combustion gas and the naturally ventilated air, so that a larger heat transfer area is required as compared with a boiler having a water cooling wall. The volume of is large. Therefore, in the case of the gas sauna apparatus 100, as compared with a boiler having a water cooling wall, a longer time is required even when the number of times of gas replacement is the same.

  If it is determined in step 103 that the time in which the gas in the radiant tube 16 can be replaced four times has elapsed, the combustion device 11A is started in step 104.

  Specifically, when the gas electromagnetic valve 17 is opened, fuel gas is supplied to the burner 10 through the fuel pipe 18, and the ignition device 31A ignites and starts combustion.

  After the combustion is started by the burner 10, it is determined in step 105 whether or not the combustion is good. Specifically, it is determined whether or not the fuel is good by determining whether or not the current value measured by the frame rod 32A is greater than or equal to a reference value.

  If the current value measured by the frame rod 32A is greater than or equal to the reference value at step 105, it is determined that combustion is good and the routine proceeds to step 106. In step 106, on / off control of the combustion apparatus 11A is performed based on the room temperature in the sauna room 1 detected by the temperature sensor 27. Specifically, the combustion device 11A stops when the room temperature in the sauna chamber 1 becomes higher than the set temperature, and the combustion device 11A stops when the room temperature in the sauna chamber 1 becomes lower than the set temperature. to start.

  During operation of the combustion apparatus 11A, it is constantly monitored by the wind pressure switch 25 that the pressure in the combustion cylinder 15 and the radiation tube 16 is smaller than the atmospheric pressure. When the pressure in the combustion cylinder 15 and the radiation tube 16 becomes larger than the atmospheric pressure and the state continues for a predetermined time, the gas electromagnetic valve 17 is set to prevent gas leakage into the sauna chamber 1. An interlock function such as forcibly closing the valve and stopping the combustion apparatus 11A works.

  Even during the operation of the combustion apparatus 11A, the air supply blower 21 and the induction blower 20 are operated in conjunction so that the pressure in the machine chamber 2 becomes larger than the atmospheric pressure. Therefore, the hot air in the sauna room 1 is prevented from entering the machine room 2, and breakdowns of equipment and the like installed in the machine room 2 are prevented.

  In step 107, it is determined whether or not there is a stop command for the combustion apparatus 11A. This stop command is a case where the gas sauna apparatus 100 is intentionally stopped, such as when the business is finished, and is issued by pressing a stop push button of the combustion apparatus 11A provided in the control panel 26.

  If it is determined in step 107 that there is a command to stop the combustion apparatus 11A, the process proceeds to step 500, the gas electromagnetic valve 17 is closed, the fuel gas supply is shut off, and the combustion apparatus 11A stops. In step 500, both the combustion device 11A and the combustion device 11B are stopped.

  If it is determined in step 107 that there is no stop command to the combustion device 11A, the combustion device 11A continues to operate and proceeds to step 108. In step 108, it is determined whether or not there is a command for switching from the operation of the combustion device 11A to the operation of the combustion device 11B. The operation switching command is issued periodically, for example, every 8 hours.

  If it is determined in step 108 that there is no switching command, the combustion apparatus 11A continues to operate.

  If it is determined in step 108 that there is a switching command, the gas electromagnetic valve 17 is closed in step 109, the burner 10 is extinguished and the combustion device 11A is stopped.

  After the combustion apparatus 11A is stopped in step 109, the process proceeds to step 203, and it is determined whether or not the induction blower 20 has replaced the gas in the radiant tube 16 a predetermined number of times or more as in step 103.

  If it is determined in step 203 that the time in which the gas in the radiation tube 16 can be replaced four times has passed, the routine proceeds to step 204, where the gas electromagnetic valve 17 is opened as in step 104 above. This activates the combustion device 11B.

  In this way, switching from the combustion device 11A to the combustion device 11B is performed, and at the time of switching, the gas in the radiant tube 16 is replaced by a predetermined number of times or more by the induction fan 20. In other words, when the operation of the combustion device 11 is switched, the interval between the closing and opening of the gas solenoid valve 17 is such that the induction blower 20 replaces the gas in the radiant tube 16 a predetermined number of times or more so It is set to a time when gas can be removed.

  As described above, even when the combustion device 11 is switched, the induction blower 20 and the supply air blower 21 continue the continuous operation and completely remove the unburned gas in the radiant tube 16. Therefore, it is possible to prevent the occurrence of backfire due to remaining unburned gas. Moreover, since the induction blower 20 and the supply air blower 21 continue the continuous operation, the burner 10 provided in the high-temperature combustion cylinder 15 is cooled, so that flashback at the time of ignition can be prevented.

  When only the induction blower 20 is stopped when the combustion device 11 is switched, the pressure in the radiant tube 16 rises due to the pressure of the supply air blower 21, and harmful combustion gas remaining in the radiant tube 16 is radiated. There is a risk of being leaked by being pushed out from the gap of the connecting portion of the pipe 16 into the sauna room 1. However, since the induction blower 20 and the supply air blower 21 continue the continuous operation, such a risk is avoided.

  Since the procedure of Steps 205 to 209 after the activation of the combustion device 11B in Step 204 is the same as the procedure of Steps 105 to 109 in the combustion device 11A, description thereof will be omitted.

  If it is determined in step 208 that there is a switching command after the combustion apparatus 11B is started, the burner 10 is extinguished by closing the gas electromagnetic valve 17 in step 209. The combustion device 11B stops.

  After the combustion apparatus 11B stops in step 209, the process proceeds to step 103, and the startup sequence of the combustion apparatus 11A proceeds.

  As described above, the operation of the combustion device 11A and the combustion device 11B is automatically switched periodically at regular intervals. Thereby, since continuous operation for a long time is avoided, the combustion apparatus 11 is unlikely to fail.

  Next, the case where combustion becomes abnormal during the operation of the combustion apparatus 11A will be described.

  The state of combustion during operation of the combustion device 11A is constantly monitored by the frame rod 32A. Specifically, in step 105, if the current value measured by the frame rod 32A is less than the reference value, it is determined that the combustion is abnormal, and the process proceeds to step 110. Abnormal combustion includes non-ignition due to failure of the ignition device 31A, flame detection failure due to failure of the frame rod 32A, and the like.

  In step 110, the gas solenoid valve 17 is closed, whereby the burner 10 is extinguished and the combustion apparatus 11A is stopped.

  In step 111, it is determined whether or not the induction fan 20 has replaced the gas in the radiant tube 16 a predetermined number of times or more.

  If it is determined in step 111 that the time in which the gas in the radiant tube 16 can be replaced four times has passed, the routine proceeds to step 112 where the gas electromagnetic valve 17 is opened and the combustion device 11B is activated. .

  As described above, when a combustion abnormality occurs during operation of the combustion device 11A, the combustion device 11A automatically stops and the combustion device 11B automatically starts, and the operation is switched to the normal combustion device 11B. .

  Subsequently, in step 113, it is determined whether combustion is good or not based on the current value measured by the frame rod 32B.

  If it is determined in step 113 that the combustion is good, the process proceeds to step 114. In step 114, on / off control of the combustion device 11B is performed based on the room temperature in the sauna room 1 detected by the temperature sensor 27. Done.

  If it is determined in step 113 that the combustion is abnormal, the process proceeds to step 500 where the gas electromagnetic valve 17 is closed and the combustion device 11B is stopped. Thus, both the combustion device 11A and the combustion device 11B are stopped.

  In step 115, it is determined whether there is a stop command for the combustion device 11B. If it is determined in step 115 that there is a stop command for the combustion device 11B, the process proceeds to step 500, where the gas electromagnetic valve 17 is closed and the combustion device 11B is stopped. When it is determined in step 115 that there is no stop command to the combustion device 11B, the combustion device 11B continues to operate.

  On the other hand, when the combustion becomes abnormal during the operation of the combustion device 11B, the process proceeds from step 205 to step 210, and the operation is switched to the normal combustion device 11A by the procedure up to step 215. The procedure from Step 210 to Step 215 is the same as the procedure from Step 110 to Step 115, and will not be described.

  As described above, when the combustion of one combustion device 11 becomes abnormal, the operation is automatically switched to the other normal combustion device 11, so that after the switching, the repair of the combustion device 11 in which the abnormality has occurred is performed. It can be performed. Therefore, the gas sauna heater 4 can be prevented from being stopped, and the gas sauna apparatus 100 can be operated with peace of mind.

  In the above description, it has been described that the combustion apparatus 11 performs the on / off control based on the room temperature in the sauna room 1 detected by the temperature sensor 27. However, as an automatic control of the combustion apparatus 11, instead of the on / off control, the combustion amount of the burner 10 is automatically increased or decreased based on the result detected by the temperature sensor 27 so as to keep the temperature of the sauna chamber 1 constant. You may control to. Specifically, the combustion amount of the burner 10 is increased or decreased by three-position control of high combustion, low combustion, and stop, or proportional control. By automatically controlling the amount of combustion of the burner 10 in this way, the number of times the combustion device 11 is turned on and off is reduced, so that the frequency of non-ignition when the burner 10 is ignited is reduced and the induction fan 20 is continuously operated when the combustion device 11 is stopped. The heat loss due to can be reduced.

  Next, the case where the automatic manual selection switch 41 provided on the remote control panel is manually selected will be described with reference to FIG. FIG. 5 is a flowchart showing an operation procedure of the gas sauna device 100 when the automatic manual selection switch 41 is manually selected.

  The automatic manual selection switch 41 is manually selected, for example, when inspecting the combustion apparatus 11B on standby during the operation of the combustion apparatus 11A. In such a case, the automatic manual selection switch 41 is set to manual selection in order to prevent automatic switching to the combustion device 11B to be inspected.

  As shown in FIG. 5, in addition to the automatic manual selection switch 41, the remote control panel identifies the start / stop push buttons (not shown) of the combustion devices 11A and 11B and the combustion device 11 in operation. An operation display unit (not shown) for performing the operation, an abnormality display unit 42 for displaying the abnormality when an abnormality occurs in the operating combustion apparatus 11, and an automatic manual selection switch 41 are manually selected. A combustion device selection switch 43 for selecting the combustion device 11 to be started is provided.

  The abnormality display unit 42 includes an A-side abnormality lamp 42a that is turned on when an abnormality occurs in the combustion device 11A, and a B-side abnormality lamp 42b that is turned on when an abnormality occurs in the combustion device 11B.

  In the situation where the automatic manual selection switch 41 shown in FIG. 4 is manually selected, if an abnormality occurs in the combustion apparatus 11B, the B-side abnormality lamp 42b is lit. Thereby, the front staff can notice the abnormality of the combustion device 11B.

  In this case, the attendant presses the stop push button of the combustion device 11B to stop the combustion device 11B, and switches the combustion device selection switch 43 to the combustion device 11A side as shown in FIG.

  Then, by pressing the start push button of the combustion device 11A, the start sequence of the combustion device 11A is started (step 301), and the combustion device 11A is started. Since the procedure of steps 302 to 306 is the same as the procedure of steps 103 to 107, description thereof is omitted.

  Further, when an abnormality occurs in the combustion apparatus 11A, the A-side abnormality lamp 42a is turned on. Thereby, the front staff can notice the abnormality of the combustion apparatus 11A.

  In this case, the clerk presses the stop push button of the combustion device 11A to stop the combustion device 11A and switches the combustion device selection switch 43 to the combustion device 11B side.

  Then, by pressing the start push button of the combustion device 11B, the start sequence of the combustion device 11B is started (step 401), and the combustion device 11B is started. Since the procedure of steps 402 to 406 is the same as the procedure of steps 103 to 107, the description thereof is omitted.

  As described above, even when an abnormality occurs in one of the combustion device 11A and the combustion device B in a situation where the automatic manual selection switch 41 is manually selected, the operation is easily switched to a normal combustion device by manual operation. be able to. In addition, since the remote operation panel on which this manual operation is performed is provided on the front or the like different from the machine room 2, there is no need to go to the machine room 2 through the bathroom and the sauna room 1 when the combustion device 11 is abnormal, It is possible to respond to failures quickly.

  Next, with reference to FIG.4 and FIG.5, the stop procedure of the gas sauna apparatus 100 is demonstrated.

  In step 500, even when both the combustion device 11A and the combustion device 11B are stopped, the induction blower 20 and the supply air blower 21 continue to operate. Thus, the induction blower 20 and the supply air blower 21 are continuously operated regardless of the operation stop of the combustion device 11.

  The induction blower 20 and the supply air blower 21 are stopped automatically or manually after a predetermined time has elapsed after both the combustion device 11A and the combustion device 11B are stopped.

  The predetermined time is desirably a time during which the temperature in the sauna room 1 and the machine room 2 is lowered to a level that does not adversely affect each device in the machine room 2. The induction blower 20 that discharges high-temperature combustion gas has a structure in which exhaust wings and air cooling fan wings for cooling the motor are coaxially provided on the shaft of the motor. Therefore, if the induction blower 20 is stopped before the exhaust temperature is sufficiently lowered, the motor may be overheated without being cooled and may fail. Also from this point of view, it is desirable that the induction blower 20 is stopped after a sufficient time has elapsed after the combustion device 11 is stopped.

  According to the above embodiment, the following effects are obtained.

  The combustion device 11 is composed of a plurality of systems (11A, 11B), and the operation of the combustion device 11 is periodically switched. Accordingly, since a long continuous operation of one combustion device 11 is avoided, the combustion device 11 is unlikely to fail.

  Moreover, the pressure in the combustion cylinder 15 and the radiation tube 16 is kept smaller than atmospheric pressure by the induction fan 20. Thereby, the combustion gas harmful to the human body is prevented from leaking into the sauna room 1.

  The induction blower 20 and the supply air blower 21 are operated in conjunction so that the pressure in the machine room 2 becomes larger than the atmospheric pressure. Therefore, air contaminated with high temperature in the sauna room 1 can be prevented from entering the machine room 2, and failure of devices and the like installed in the machine room 2 can be prevented.

  Further, when the combustion device 11 is switched, the gas in the radiant tube 16 is replaced a predetermined number of times or more by the induction blower 20 and the unburned gas in the radiant tube 16 is completely removed before the burner is ignited. Therefore, it is possible to prevent the occurrence of backfire due to the remaining unburned gas when the combustion device 11 is switched.

  Further, when the combustion device 11 is switched, the induction blower 20 and the supply air blower 21 continue to operate continuously, whereby the burner 10 provided in the high-temperature combustion cylinder 15 is cooled, thereby preventing flashback at the time of ignition. can do. Further, the ignition device 31 and the frame rod 32 are also cooled to prevent damage and deformation due to heat.

  In addition, when the induction blower 20 continues the continuous operation while the combustion device 11 is stopped due to the switching of the combustion device 11, air at a room temperature lower than the temperature of the sauna chamber 1 is blown into the radiant tube 16, and the air As a result, the inside of the sauna room 1 is cooled and there is a possibility that the heat energy is wasted. However, if the combustion apparatus 11 automatically controls the temperature in the sauna chamber 1 by three-position control or proportional control of high combustion, low combustion, and stop based on the result detected by the temperature sensor 27, only the operation and stop are performed. Compared with the on / off control, the time during which the temperature of the sauna chamber 1 rises excessively and automatically stops can be shortened. Therefore, loss of heat energy is prevented.

  In addition, after the combustion apparatus 11 is stopped, the induction blower 20 and the supply air blower 21 continue the continuous operation. As a result, the air in the machine room 2 is exhausted by the induction fan 20 and new air is supplied to the machine room 2 by the air supply fan 21. Therefore, a temperature rise in the machine room 2 due to heat radiation from the induction fan 20 or heat radiation of a television provided between the sauna room 1 and the machine room 2 is prevented. Thus, since the inside of the machine room 2 is ventilated even after the combustion apparatus 11 is stopped and the rise in the room temperature is suppressed, failure of each device in the machine room 2 can be prevented. The role of the induction blower 20 as a ventilation device is important, and even when the combustion device 11 is stopped, it cannot be stopped.

  Moreover, since the motor of the induction blower 20 is cooled by continuing the continuous operation of the induction blower 20 even after the combustion apparatus 11 is stopped, the failure of the motor can be prevented.

  As described above, by operating the induction blower 20 and the supply air blower 21 continuously regardless of the operation stop of the combustion device 11, the failure of the gas sauna device 100 can be prevented and it can be operated safely. Become.

  The present invention is not limited to the above-described embodiment, and it is obvious that various modifications can be made within the scope of the technical idea.

  The gas sauna apparatus according to the present invention can be used for a sauna facility installed in a large-scale bathhouse facility.

It is a top view of a sauna room and a machine room. It is a schematic diagram which shows the gas sauna apparatus which concerns on embodiment of this invention. It is a top view of a combustion apparatus. It is a flowchart which shows the procedure of operation | movement of a gas sauna apparatus. It is a flowchart which shows the procedure in the case of operating a gas sauna apparatus manually.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Gas sauna apparatus 1 Sauna room 2 Machine room 4 Gas sauna heater 10 Burner 11, 11A, 11B Combustion apparatus 12 Ventilation equipment 16 Radiation pipe 17 Gas solenoid valve 19a Intake port 20 Induction fan 21 Inlet fan 24 Exhaust duct 26 Control panel 27 Temperature Sensor 29 Through-hole 31, 31A, 31b Ignition device 32, 32A, 32B Frame rod 33 High voltage transformer 34 Ignition rod 41 Automatic manual selection switch 42a A side abnormal lamp 42b B side abnormal lamp 43 Combustion device selection switch

Claims (6)

A gas sauna device that burns fuel gas and heats a sauna room by heat radiation of a heat radiating pipe through which the combustion gas passes,
A combustion device for burning fuel gas in a burner;
Control means for controlling the operation of the combustion device;
Ventilation equipment provided in a machine room adjacent to the sauna room for supplying combustion air to the combustion device and discharging combustion gas of the combustion device;
A gas solenoid valve for supplying and shutting off fuel gas to the burner, and
The combustion device comprises:
An ignition device for igniting the burner;
And a flame detector for detecting a flame of the burner,
A plurality of combustion devices are configured by providing two or more of the ignition device and the flame detector for one burner ,
As the gas solenoid valve is closed and the burner is digested, the operating combustion system is stopped, and after the predetermined time has elapsed, the gas solenoid valve is opened so that the other combustion apparatus is stopped. The operation of the combustion device is periodically switched so that the system is activated and the burner is ignited,
The ventilation equipment is
An induction blower that sucks combustion air from the machine room and guides it to the burner, and discharges combustion gas to the outside of the machine room;
An air supply fan for supplying outside air to the machine room,
The gas sauna device, wherein the induction blower and the supply air blower are continuously operated regardless of the operation stop of the combustion device.   The induction blower and the air supply blower operate in conjunction so that the pressure in the radiant pipe provided in the sauna room is smaller than atmospheric pressure and the pressure in the machine room is larger than atmospheric pressure. The gas sauna device according to claim 1. Interval from closing to opening of the gas solenoid valve during operation is switched before Symbol combustion apparatus, the attraction blower, the unburned gas in the gas emission tube replacing a predetermined number of times or more the radiant tube can be removed The gas sauna device according to claim 1 or 2, wherein the gas sauna device is set to a long time. Wherein when an abnormality in the system of the combustion apparatus during operation occurs, activates the systems of other combustion device in the stopping stops the system of the combustion device during its operation, the operation of the combustion device Gasusauna device according to claim 3, wherein the Ruco switched. A temperature detector for detecting the temperature of the sauna room;
The said combustion apparatus controls so that the temperature of the said sauna chamber may be kept constant by automatically increasing / decreasing the amount of combustion of the said burner based on the result detected by the said temperature detector. The gas sauna device according to any one of claims 1 to 4. A remote control panel installed at a different location from the machine room and capable of remotely monitoring and operating the combustion device;
The remote control panel includes
An operation indicator for identifying the combustion device in operation;
When an abnormality occurs in the combustion device during operation, an abnormality display section that displays the abnormality,
An automatic manual selection switch for selecting whether the operation of the combustion device is switched automatically or by means;
A combustion device selection switch for selecting a combustion device to be activated when the automatic manual selection switch is manually selected;
The gas sauna device according to any one of claims 1 to 5, wherein a gas sauna device is provided.

Images