JP6510934B2 - Warm air heater - Google Patents

Description

  The present invention relates to a warm air heating apparatus that raises the temperature in a room by blowing warm air generated by the combustion of a combustion unit with a convection fan.

  Conventionally, in a warm air heating apparatus of this type, as shown in FIG. 9, the appliance body 101, a combustion unit 102 installed in the appliance body 101 for burning fuel, and heating by the combustion unit 102. The convection fan 103 for performing a heating operation for blowing the hot air generated in the above, the hot air outlet 104 formed on the front of the device body 101 and opened toward the room, and the device from the inside of the hot air outlet 104 It has a duct portion 105 formed on the left and right of the hot air outlet 104 so as to communicate with the front surface of the main body 101, and an in-instrument temperature sensor 106 installed in the duct portion 105 to detect ambient temperature. When the obstacle 107 is placed in front of the outlet 104, the warm air which collides with the obstacle 107 and is reflected to the device body 101 flows into the duct portion 105, and the temperature sensor 106 in the device If the high temperature abnormal error occurs and the combustion in the combustion unit 102 is stopped when the detected temperature continues to be a predetermined temperature or more for a predetermined time, the members constituting the device main body 101 continue to be exposed to high temperatures and are damaged. There was a warm air heating system to prevent. (For example, Patent Document 1)

JP 2001-303322 A

  However, in this conventional device, the opening area of the duct portion formed on the front surface of the instrument body is smaller than that of the hot air outlet, and the duct portions are formed on the left and right of the hot air outlet. Because the amount of warm air reflected by the obstacle into the duct is small, the temperature rise speed in the duct is slow, and it takes time until the temperature sensor in the appliance determines the presence or absence of the obstacle in front of the hot air outlet. There is such a possibility, and since the duct portion is formed in the device body separately from the hot air outlet and the temperature sensor in the device is installed for each duct portion, the manufacturing time and cost of the product increase. So there is room for improvement.

In order to solve the above-mentioned problems, in claim 1 of the present invention, an appliance body, a combustion unit installed in the appliance body for burning fuel, and air heated by combustion heat of the combustion unit are used as hot air. And a hot air outlet opening toward the front of the device body so that the warm air blown by the convection fan is blown to the front of the device body, and the hot air outlet installed in the hot air outlet A frame-like outlet frame formed to close at least the upper surface of the hot air outlet, and one side of the tool body, viewed from the front, connected to the hot air outlet and heated by the combustion unit, the convection fan Storage unit for storing an air supply box through which warm air supplied by the air passes and an oil supply tank which is disposed adjacent to the air supply box on the other side in a front view of the device body and stores the fuel oil supplied to the combustion unit. and, before An instrument temperature sensor installed in the instrument body to detect the temperature in the instrument body, and when it is determined that an operation start instruction has been issued, start the combustion operation in the combustion unit and start the heating operation to drive the convection fan The control unit is configured to stop the heating operation when it is determined that the temperature detected by the temperature sensor in the device is equal to or higher than a predetermined value
A slit is formed on the upper surface of the outlet frame, and the in-tool temperature sensor is installed in the storage portion .

  According to the present invention, the slit is formed on the upper surface of the outlet frame, and the temperature sensor in the device is installed above the slit. Therefore, when an obstacle is present in front of the warm air outlet, the warm air is the warm air The hot air flows through the slit formed on the upper surface of the outlet frame and reaches the temperature sensor in the instrument, and the temperature detected by the temperature sensor in the instrument rises, so the hot air is blown out. When there is an obstacle in front of the mouth, the temperature detected by the temperature sensor in the device rises early, a high temperature error can be judged and the heating operation can be stopped, and the temperature in the device near the hot air outlet Since it is not necessary to form the duct part which installed the sensor, the increase in manufacturing time and cost of a product can be prevented.

The perspective view of the warm air heating apparatus which shows one Embodiment of this invention Side view sectional view of the same embodiment Front view of the same embodiment with the front panel removed Plane view sectional drawing of the embodiment The figure explaining the combustion system of the embodiment The figure explaining the operation part of the embodiment Control block diagram of the same embodiment The figure explaining the flow of the warm air when the obstacle of the embodiment exists in front of an instrument main body. Plan view sectional drawing of the conventional warm air heating apparatus

Next, a warm air heating apparatus according to an embodiment of the present invention will be described based on the drawings.
1 is an instrument body, 2 is a front panel that covers the front of the instrument body 1, 3 is an operation unit that operates with various switches, 4 is a liquid crystal panel that displays the operation content etc. performed by the operation unit 3 on a liquid crystal screen A hot air outlet opened toward the front of the device body 1 so that the hot air is blown to the front of the device body 1, 6 is installed so as to surround the hot air outlet 5, and includes upper and lower surfaces other than the opening surface Frame-like outlet frame closed with the side, 7 are two louvers installed on the side of the outlet frame 6 to change the direction of the hot air, 8 is formed on both sides of the instrument body 1 It is a handle for lifting 1.

  9 is a convection fan attached to a hot air intake at the back through a fan guard 10, 11 is formed on the left side in a front view of the instrument body 1 and the warm air blown by the convection fan 9 is blown into the room A blower box connected to the hot air outlet 5, a burner 12 as a combustion unit provided by projecting the burner head 13 in the blower box 11, a burner 14 surrounding the burner head 13 to form a combustion space Reference numeral 15 denotes a heat shield plate disposed directly above the combustion cylinder 14 in the blower box 11.

  A plurality of louver motors 16 are installed at the lower part of the hot air outlet 5 and open and close the louver 7 by the arm 17, and a plurality of 18 are formed on the wall surface constituting the upper part of the outlet frame 6 A slit 19 is in communication with the upper portion in the apparatus 1, and 19 is an in-apparatus temperature sensor for detecting the temperature in the apparatus body 1.

  An oil supply tank 20 is installed on the right side of the appliance body 1 in a front view and opens the oil supply cover 2 to supply fuel oil such as kerosene which can be taken out and installed, 21 is a predetermined amount of fuel oil supplied from the oil tank 20 The fixed tank to be stored, 22 is an oil amount sensor that measures the amount of fuel oil in the fixed tank 21 by float, and 23 is an electromagnetic that pressure-feeds the fuel in the fixed tank 21 to the burner 12 via the oil pipe 24 and the oil nozzle 25. A pump 26 is a combustion fan for blowing the combustion air through the air duct 27.

  28 is a vaporizer for vaporizing fuel, 29 is a vaporization heater for heating the vaporizer 28 to a temperature at which the fuel can be vaporized, 30 is a vaporization temperature sensor for detecting the temperature of the vaporizer 28, 31 is a burner head A flame hole network provided on the outer periphery, 32 is a heat recovery ring for recovering combustion heat to the vaporizer 28, 33 is an igniter for sparking the vaporized gas for ignition, 34 is a flame rod for monitoring the state of the flame is there.

  The operation unit 3 includes an operation switch 35 for instructing start and stop of the heating operation, an extension switch 36 for continuously performing the heating operation even after a predetermined heating operation time has elapsed, and a temperature maintaining the vaporizer 28 The second ignition switch 37 starts heating operation in a few seconds after the switch 35 is operated, the time setting switch 38 enables setting of the timer operation starting heating operation when the current time or a predetermined time comes, and setting in heating operation The start time of the heating operation is set by the numerical adjustment switch 39 for adjusting the temperature and the current time, the child lock switch 40 for invalidating operations other than the stop instruction of the operation switch 35 for preventing child mischief, and the time setting switch 38. The timer operation switch 41 which can be set in two ways and the maximum thermal power reduced by 40% When the set temperature is 21 ° C or higher, the temperature is forcedly lowered to 20 ° C and turned off It is provided with a eco switch 42 to perform the eco-drive with reduced power, to change the control of the heating operation by operating the various switches.

  Furthermore, the operation lamp 43 lights up when the operation switch 35 is operated and the start of the heating operation is instructed, the extension lamp 44 blinks 15 minutes before the automatic extinguishing, and it lights up when the second ignition switch 37 is operated. The operation unit 3 is equipped with a second speed ignition lamp 45, a timer operation lamp 46 for lighting the timer operation switch 41 operated in two ways, and an eco lamp 47 for lighting when the eco switch 42 is operated and the eco driving is started. It is easy to visually confirm the presence or absence of various switch operations.

  Reference numeral 48 denotes a control unit which is installed on a partition plate 49 which constitutes the front of the storage portion in which the fuel tank 20 is stored above the outlet 5 and which comprises a microcomputer for controlling the instrument body 1; A comparison means 50 is provided to compare the temperature detected by the internal temperature sensor 19 with 59 ° C., which is a predetermined value, and when the temperature exceeds 59 ° C., it is judged as a high temperature error and the heating operation is stopped.

  Further, on the base constituting the control unit 48, an in-apparatus temperature sensor 19 is installed in the vicinity of the left side in the front view of the apparatus main body 1 in which the blower box 11 is formed. If there is an obstacle ahead, the obstacle acts as a ventilation resistance, and the amount of warm air flowing in directions other than the horizontal direction with respect to the warm air outlet 5 increases, passes through the slit 18 and the temperature inside the appliance Since the detected temperature rises as the amount of warm air reaching the sensor 19 increases, the occurrence of the high temperature abnormality error can be judged early.

  Reference numeral 51 denotes a speaker for informing by melody or sound effect when the operation switch 35 or the extension switch 36 is operated.

Next, the heating operation in the present embodiment will be described.
First, the control unit 48 determines whether the operation start instruction is instructed by the operation switch 35 on the operation unit 3 or whether the operation start time set by the time setting switch 38 comes and the start instruction of the heating operation is given, If it is determined that the start instruction of the operation has been issued, the vaporization heater 29 is energized to raise the temperature of the vaporizer 28 and the louver motor 16 is driven to operate the louver 7 to open the hot air outlet 5 and the vaporization temperature sensor When it is determined that the detected temperature at 30 becomes equal to or higher than the predetermined vaporization temperature, the electromagnetic pump 12 is driven to inject fuel into the carburetor 28, and the combustion fan 26 is driven to carburetor via the air duct 27. 28. Blow the combustion air into the chamber.

  Then, when the fuel vaporized in the vaporizer 28 and the combustion air are mixed to generate a vaporized gas, the control unit 48 energizes the igniter 33 to spark discharge so that the vaporized gas is ignited and the high temperature is generated. The combustion gas is generated, and driving of the convection fan 9 is started, so that the air blown by the convection fan 9 mixes with the high-temperature combustion gas and flows in the blower box 11 to go to the hot air outlet 5 The heating operation is started by blowing hot air forward from the left side of the hot air outlet 5 communicating with the blower box 11 in the front view of the tool body 1.

  In addition, when an obstacle does not exist in front of the hot air outlet 5, the warm air is blown out without disturbance in the flow direction toward the front of the hot air outlet 5, so Since the amount of warm air flowing from the slit 18 formed in the upper part toward the upper part in the tool body 1 is small, the temperature detected by the in-tool temperature sensor 19 does not rise to 59 ° C. which is a predetermined value, and the heating operation is erroneous It will not be stopped.

  Thereafter, when it is determined that the operation to instruct the stop of the heating operation is performed by the operation switch 35 or an error such as no flame detection is generated by the frame rod 34, the control unit 48 drives the electromagnetic pump 12 and the combustion fan 26. Is stopped to stop the combustion in the burner 12 and drive the convection fan 9 for a predetermined time to cool the vaporizer 28 and stop the drive of the convection fan 9 and drive the louver motor 16 when the predetermined time has elapsed. The heating operation is ended by closing the hot air outlet 5.

Next, the flow of the warm air when the obstacle is present in front of the warm air outlet 5 of the present embodiment will be described based on FIG.
First, when there is an obstacle such as a box or the like in front of the hot air outlet 5 during the heating operation, or when the towel or the like is hung on the appliance body 1 and the hot air outlet 5 is closed, the convection fan 9 Since the amount of warm air flowing from the warm air outlet 5 to the front of the tool main body 1 decreases by increasing the draft resistance to the warm air blown by the fan, the amount of warm air flowing from the slit 18 upward in the tool main body 1 Will increase.

  As a result, the temperature sensor 19 in the device is installed above and in the vicinity of the slit 18, so that the temperature detected by the temperature sensor 19 in the device rises by the warm air passing through the slit 18, and the control unit 48 The comparing means 49 determines whether the temperature detected by the internal temperature sensor 19 is 59 ° C. or higher, which is a predetermined value, and if the detected temperature is 59 ° C. or higher, it is a high temperature error and the heating operation is stopped. It is possible to prevent the constituent members from being continuously exposed to hot air and broken.

  As described above, by forming the plurality of slits 18 in the upper portion of the outlet frame 6, when an obstacle such as a box or towel is present in front of the hot air outlet 5, the amount of warm air flowing in the direction of the slit 18 The temperature detected by the in-tool temperature sensor 19 increases, and when it detects a predetermined value of 59 ° C. or higher, it is determined that a high temperature abnormality error has occurred, and the heating operation is stopped. The fact that the inside of the tool body 1 is exposed to a high temperature for a long time by closing the block 5 with an obstacle can prevent the damage of the members constituting the tool body 1 in advance.

  Further, the slit 18 is not provided on the right side in front view when the partition plate 49 is installed and the amount of flow of warm air blown from the blower box 11 is small. When an obstacle is present in front of the hot air outlet 5, the in-tool temperature sensor 19 is directed from the slit 18 by being formed on the wall surface constituting the upper portion of the outlet frame 6 on the left in front view. Because the amount of warm air flowing to the air increases, it is possible to reliably determine the high temperature abnormality error and stop the heating operation.

  In the present embodiment, although only the plurality of slits 18 are formed on the upper surface of the outlet frame 6, the present invention is not limited thereto, and the amount of warm air flowing forward of the appliance body 1 during normal operation is secured. A gap is formed between the outlet frame 6 and the blower box 11 so that the amount of warm air flowing upward in the instrument body 1 increases only when an obstacle is present in front of the hot air outlet 5. Therefore, if an obstacle exists ahead of the hot air outlet 5 during heating operation, the amount of warm air flowing forward of the device body 1 is reduced by the air flow resistance, and flows upward in the device body 1 When the amount of warm air increases, the amount of warm air flowing upward of the tool body 1 increases along with the slits 18 formed on the upper surface of the outlet frame 6, so the temperature detected by the temperature sensor 19 in the tool is early Rise to high temperature anomaly The heating operation is stopped due to error occurrence can be reliably performed.

  Further, the configuration and the control content in the present embodiment are presented as an example, and it is not intended to limit the scope of the invention, and can be implemented in other various forms. Various omissions, replacements and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and the gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof.

1 Apparatus body 5 Hot air outlet 6 Outlet frame 9 Convection fan 12 Burner (burning part)
18 slit 19 temperature sensor in the device 48 control unit

Claims (2)

An appliance body, a combustion unit installed in the appliance body for burning fuel, a convection fan for blowing air heated by combustion heat of the combustion unit as warm air, and warm air blown by the convection fan A hot air outlet opening toward the front of the device body so as to blow air to the front of the device body, and a frame-like member installed in the hot air outlet and formed to close at least the upper surface of the hot air outlet An outlet frame, a blower box disposed on one side in a front view of the device body, connected to the hot air outlet, heated by the combustion unit, and through which warm air blown by the convection fan passes; A storage section arranged adjacent to the blower box on the other side of the front view and storing an oil supply tank in which the fuel oil to be supplied to the combustion section is stored ; Detection If it is determined that an instruction to start operation has been issued, combustion in the combustion unit is started to start a heating operation to drive the convection fan, and the temperature detected by the temperature sensor in the appliance is equal to or higher than a predetermined value And a control unit for stopping the heating operation if it is determined that
A slit is formed on the upper surface of the outlet frame, and the temperature sensor in the appliance is installed in the storage portion . The hot-air heating apparatus according to claim 1, wherein the in-apparatus temperature sensor is installed on a base which is installed on the partition plate which configures the storage section and which configures the control.

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