JP6505553B2 - Warm air heater - Google Patents

Description

  The present invention relates to a warm air heater provided with a human detection means for detecting the presence of a human.

  Conventionally, in this type of equipment, a human body detection means constituted by a human sensor is installed approximately at the center of the upper front of the frame, and the human body detection means detects the presence of a human during combustion of the burner. When the engine is in use, the combustion control means compares the temperature value stored in the temperature setting means with the temperature value of the current room temperature, and indicates the fuel flow rate and the supplied air amount in the optimum pump and combustion fan. While driving, the human body detection means outputs a signal of human body non-detection that can not detect the presence of a person, and when this state continues for a predetermined time, the combustion control means changes the flow rates of fuel and air of the pump and the blower for combustion Then, control was performed to forcibly change the amount of combustion of the burner to micro combustion. (For example, refer to patent document 1.)

  Further, although not described in Patent Document 1, in the warm air heater provided with the human feeling detecting means, an opening is provided in the front of the frame, and the human feeling detecting means is provided in the back of the opening. Therefore, the light receiving range of the infrared ray is narrowed, and the blowout heat of the warm air heater prevents the human body detection means from judging that there is a person even though there is no person.

Unexamined-Japanese-Patent No. 2006-207979

  However, in this prior art, even if the human body detection means is provided at the back of the opening to narrow the light receiving range of the infrared rays, the infrared rays pass through the frame depending on the material of the frame, and the human body detection means There is a problem that it is determined that there is a person even though there are no people.

A frame configured by fixing a front panel with a wind outlet formed thereon, a top plate with a top surface, and a back plate with sides and a back on a pedestal, and the vicinity of the upper end of the front panel A main body display portion provided on the main body display portion; a display portion plate provided to cover the main body display portion; a display portion plate opening portion formed on the display portion plate; has a vertical-shaped cover part the light-receiving surface, and a human body detection means for detecting the infrared radiation to the frame body, the main body opening is positioned in front of the substantially upper half of the cover part the light receiving surface of the human body detecting means And the display plate opening covers the periphery of the display plate opening in the warm air heater provided to be located in front of the main body opening, at the position of the display plate opening. Open the blocking plate opening Warm air heater, characterized in that a infrared-ray shielding plate form.

  Further, the infrared blocking plate is formed to be larger than the light receiving surface of the cover portion, and the blocking plate opening has substantially the same size as the display portion plate opening.

  Further, the lower surface of the main body opening and the display portion plate opening is formed in a horizontal plane, and the opening areas of the main body opening and the display portion plate opening increase toward the front. .

  According to the present invention, by providing the opaque infrared blocking plate for blocking infrared rays around the entrance of the opening, the infrared rays will not pass through the frame regardless of the material of the frame. It is possible to reliably prevent the occurrence of false detection that the human body detection means determines that there is a person even though there is no person.

BRIEF DESCRIPTION OF THE DRAWINGS The front view of the warm air heater with one Example of this invention. The front view which removed the front panel and made the movable louver open. The top view which shows arrangement | positioning of the same burner part and a cartridge type tank. The disassembled perspective view of the same display part. Sectional drawing of the same display part.

Next, a warm air heater according to the present invention will be described with reference to an embodiment shown in the drawings.
Reference numeral 1 denotes a hot air heater main body, and the frame 2 of the hot air heater main body 1 holds a front panel 3 covering the front, an upper surface plate 4 covering the upper surface, and a rear plate 5 covering the side and rear It is configured to be fixed on top of six.

  7 is an operation unit provided on the front of the upper surface, 8 is a display unit provided on the front upper portion, 9 is a warm air outlet for blowing warm air formed on the front panel 3, and 10 is upper and lower at the warm air outlet 9 A movable louver which is provided and movable to open and close the hot air outlet 9 and guides the warm air, 11 is a convective fan attached to the air intake 12 at the back via a fan guard (not shown), 13 is A blower box communicating the air intake 12 with the hot air blower outlet 9. A burner portion 14 is provided by projecting the burner head 15 into the blower box 13. A combustion space 16 surrounds the burner head 15. The burner unit 14 and the combustion cylinder 16 are attached to the combustion cylinder substrate 17, and the combustion cylinder substrate 17 to which the burner unit 14 and the combustion cylinder 16 are attached is attached to the blower box 13. A.

  Then, the fuel from the cartridge type tank 18 for supplying liquid fuel such as kerosene is temporarily stored in the fixed tank 19 and the fuel in the fixed tank 19 is pumped by the electromagnetic pump 21 to the burner unit 14 via the oil pipe 20. The combustion fan 22 blows the combustion air to the burner unit 14 through the blow pipe 23.

In the frame 2, a cartridge type tank 18 provided so as to be freely removable from the frame 2 is disposed on the right side when viewed from the front, and disposed so that the burner unit 14 is located on the left side when viewed from the front It is
Further, the warm air passing portion 24 is formed on the left side when viewed from the front in the front portion of the frame 2 and the combustion gas from the burner portion 14 disposed on the left side when viewed from the front in the frame 2 2) The warm air mixed with the air blown by the convective fan 11 provided on the back side passes through the warm air passage portion 24 and blows out from the warm air outlet 9. Most of the warm air from the left side of the warm air outlet 9 Blows out.

Next, the structure of the display unit 8 will be described in detail with reference to FIG. 4 of an exploded perspective view of the display unit 8 and FIG. 5 of a cross-sectional view of the display unit 8.
Reference numeral 25 denotes a human body detection means constituted by a human sensor for detecting infrared rays, covering a human sensor portion 27 provided with a substantially vertical sensor portion light receiving surface 26 for detecting infrared rays, and the human sensor portion 27; The sensor cover portion 29 having a substantially vertical cover portion light receiving surface 28 and a substrate portion 30 to which the human sensor unit 27 and the sensor cover portion 29 are attached; The center of the light receiving surface of the sensor unit and the center of the light receiving surface of the cover unit are aligned on the bottom line. Reference numeral 31 denotes a display unit main body that emits electronic characters such as a set temperature, time, and a timer, and reference numeral 32 denotes a translucent display unit plate that protects the display unit main body 31 of the light emitting unit from dirt and scratches.

  A main body opening 35 is formed in the display main body 33 so as to be positioned substantially on the upper half of the cover light receiving surface 28 in order to detect infrared rays by the human sensor 27. A display portion plate opening 34 is formed in front of the main body opening 33, and the lower surface of the main body opening 33 and the lower surface of the display portion plate opening 34 are substantially horizontal, and the main opening 33 and the display portion plate opening The open area of 34 increases toward the front.

  Since the cover light receiving surface 28 is located at the back of the main body opening 33, it is determined that the infrared rays transmitted through the translucent display plate 32 propagate and there are people in spite of the absence of people. An opaque infrared blocking plate 35 is provided in front of the main body opening 33 in order to prevent an erroneous detection that would otherwise occur. Further, the infrared blocking plate 35 is formed with a blocking plate opening 36 having the same size as the display plate opening 34, and the display 8 comprises the display body 31, the display plate 32 and the infrared blocking plate 35. And consists of

  Thus, by providing the main body opening 33, the display plate opening 34 and the blocking plate opening 36 and providing the human sensor unit 27 at the back of the main body opening 33, the human feeling spread on radiation The light receiving range of the sensor unit 27 can be blocked by the width of the opened display unit main body 31 acting as a wall to shield the left and right direction, and only when there are people in the front direction of the hot air heater main body 1 It was made to be able to detect by the sensor unit 27.

  In addition, the upper half of the infrared ray from the center of the human sensor unit 27 is received, the lower half of the central part of the human sensor unit 27 is closed, and the infrared rays coming from the lower side are blocked, so that warm air blows during operation. It is possible to prevent the false detection that the human detection sensor unit 27 detects the warm air from the outlet 9 and determines that there is a person despite the absence of the person. Then, the width of the opening in the upper direction is expanded as it is separated from the human body detection means 25 provided at the back, so that the light reception range in the upper direction is not narrowed too much.

  Then, by providing the opaque infrared blocking plate 35 at the entrance of the display plate opening 34, the infrared light passes through the display plate 32 made of a translucent material, and the human sensor unit 27 detects the infrared light. It is possible to prevent false detection that it is judged that there is a person despite the absence of the person.

  In addition, if the frame 2 is made of a material that allows infrared rays to pass through, the light receiving surface of the sensor unit 27 can also be viewed from a place not opened (for example, the front panel 3 above the warm air outlet 9). 26 may receive infrared light, and it may be determined that there is a person despite the absence of the person, but the blocking plate opening 36 is substantially the same as the display plate opening 34 and the cover By providing the infrared blocking plate 35 larger than the light receiving surface 28, even if the material through which the frame 2 passes infrared light or the display plate 32 is transparent, the human sensor can be reliably detected from other than the display plate opening 34 It is possible to prevent the part 27 from receiving infrared light, and to surely prevent erroneous detection that it is determined that there is a person despite the absence of the person.

2 frame 3 front panel 4 upper plate 5 back plate 25 human body detection hand stage
2 6 Cover light receiving surface
27 human detection sensor unit 31 display unit main body 32 display unit plate 33 main unit opening 34 display unit plate opening 35 infrared blocking plate 36 blocking plate opening

Claims (3)

A frame configured by fixing a front panel with a wind outlet formed thereon, a top plate with a top surface, and a back plate with sides and a back on a pedestal, and the vicinity of the upper end of the front panel A main body display portion provided on the main body display portion; a display portion plate provided to cover the main body display portion; a display portion plate opening portion formed on the display portion plate; has a vertical-shaped cover part the light-receiving surface, and a human body detection means for detecting the infrared radiation to the frame body, the main body opening is positioned in front of the substantially upper half of the cover part the light receiving surface of the human body detecting means And the display plate opening covers the periphery of the display plate opening in the warm air heater provided to be located in front of the main body opening, at the position of the display plate opening. Open the blocking plate opening Warm air heater, characterized in that a infrared-ray shielding plate form. The temperature of claim 1, wherein the infrared blocking plate is formed to be larger than the light receiving surface of the cover portion, and the blocking plate opening has substantially the same size as the display portion plate opening. Wind heater. The lower surfaces of the main body opening and the display unit plate opening are formed in a horizontal plane, and the opening areas of the main body opening and the display unit plate opening increase in the forward direction. The warm air heater according to claim 1 or 2.

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