JP2006234192A - Heating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating device with a temperature sensor for accurately detecting the temperature of a heater without causing the blowout of cold air out of part of a blowout opening, where no heater exists, when changing specifications into a low power consumption mode. <P>SOLUTION: The heating device comprises a body case 11 having a suction opening 13 and the blowout opening 14, the PTC heater 22 provided in the blowout opening 14, and a blow fan F for sucking air from the suction opening 13 and blowing it out of the blowout opening 14. Herein, a straightening member 30 is provided in part of the blowout opening 14 for directing the air fed from the blow fan F to the PTC heater 22. The straightening member 30 has a holding portion 34 on which a temperature fuse 35 is mounted for detecting the temperature of the heater. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a heating device in which a heater is provided in a blowout opening of a main body case incorporating a blower fan, and air warmed by the heater is blown out from the blowout opening.

  Conventionally, an air conditioner incorporating a blower fan is known (see Patent Document 1).

  Such an air conditioner includes a main body case having a suction opening and a blow-off opening, a plurality of heaters arranged in parallel to the blow-off opening, a blower fan and the like provided in the main body case.

Then, air is sucked from the suction opening by the rotation of the blower fan, and the sucked air is warmed by the heater and blown out from the blow-off opening.
JP 2004-125193 A

  By the way, in such an air conditioner, when changing specifications for low power consumption without changing the size and shape of the main body case, it is sufficient to reduce the number of heaters provided in the blowout opening. There is a problem that a part that does not exist remains open, and cold air blows out from the opening of the part.

  In addition, a fuse that detects the temperature of the heater is provided at the edge of the blowout opening for safety, but if the number of heaters is reduced by removing the heater in the vicinity of the edge, the fuse is close to this fuse When the distance to the heater is increased, there arises a problem that the temperature of the heater cannot be detected by the fuse.

  The object of the present invention is that when the specification is changed for low power consumption, the cold air does not blow out from a part of the blowout opening where the heater is not provided, and the temperature of the heater can be reliably detected by the temperature detection member. It is to provide a heating device.

The invention of claim 1 includes a main body case having a suction opening and a blowout opening, a heater provided in the blowout opening, and a blower fan that sucks air from the suction opening and blows out the blowout opening. A device,
A rectifying member for directing air sent from the blower fan to the heater is provided in a part of the blowout opening,
Forming a holding portion on the flow regulating member;
A temperature detection member for detecting the temperature of the heater is attached to the holding portion.

  The invention of claim 2 is characterized in that the rectifying member has a width that is an integral multiple of the width of the heater in a direction orthogonal to the longitudinal direction.

  The invention according to claim 3 is characterized in that the rectifying member is arranged in a portion where the flow velocity of the air in the blowout opening is slow.

  The invention of claim 4 is characterized in that the rectifying member is made of a heat-resistant resin.

  According to the present invention, when the specification is changed for low power consumption, the cold air does not blow out from a part of the blowout opening without the heater, and the temperature of the heater can be reliably detected by the temperature detection member. .

  Hereinafter, the Example which is embodiment of the heating apparatus concerning this invention is described based on drawing.

[First embodiment]
1 and 2 show a bathroom air conditioner 10 that is one of the heating devices. The bathroom air conditioner 10 includes a resin-made main body case 11 attached to the ceiling T of the bathroom, a metal cover case 50 covering the main body case 11, and a bottom plate 60 attached to the lower part of the main body case 11. Have. The lower surface of the main body case 11 is provided with a suction opening 13 for sucking air in the bathroom (not shown) and a blowout opening 14 for blowing air into the bathroom. The suction opening 13 is formed in the bottom plate 60, and this bottom plate 60 forms the right edge (in FIG. 2) of the blowout opening 14.

  A heater unit 20 is provided in the blowout opening 14, and the air blown from the blowout opening 14 is heated by a plurality of PTC heaters (heaters with a self-temperature control function) 22 of the heater unit 20.

  An exhaust port 16 is provided on the side of the main body case 11, and a duct connection part 200 is connected to the exhaust port 16, and communicates with the outside through an exhaust duct 201 connected to the duct connection part 200. Yes. A damper D is provided in the main body case 11 and can be switched between a solid line position, a broken line position, and a chain line position shown in FIG. The damper D may be set so that it can be positioned at any intermediate position. A front panel (not shown) is attached to the lower surface of the main body case 11.

  The damper D is rotated around an axis J by a motor (not shown) and the position thereof is switched. When the damper D is switched to the solid line position (heating mode position), the suction opening 13 and the blowout opening 14 are interposed via the damper chamber 17. The PTC heater 22 is energized to enter the heating mode, and air flows from the suction opening 13 to the blowout opening 14 via the damper chamber 17 to heat the bathroom.

  When the damper D is switched to the broken line position (ventilation mode position), the suction opening 13 and the exhaust port 16 communicate with each other through the damper chamber 17 to enter the ventilation mode, and the exhaust port 16 passes through the damper chamber 17 from the suction opening 13. Ventilation is performed with air flowing into the head. In addition, when the damper D is switched to the chain line position (drying mode position), which is the intermediate position, the PTC heater 22 is energized to enter the drying mode, and air flows from the suction opening 13 to the exhaust port 16 through the damper chamber 17. Moist air is discharged outside the room, and instead, dry air is taken in through a suction port (not shown) provided in a bathroom door (not shown), and into the suction opening 13, the damper chamber 17, and the blowout opening 14. As the air flows, the temperature in the bathroom rises moderately and clothes can be dried. In this state, when the PTC heater 22 is deenergized, the room air is blown from the blowout opening 14 while ventilating by exhausting the room air, and the cool air mode is set.

  When the operation of the bathroom air conditioner 10 is stopped, the damper D is switched to the solid line position and the PTC heater 22 is in a non-energized state.

  A blower fan (blower) F is provided in the main body case 11 as shown in FIGS. 1 and 2. Air is sucked from the suction opening 13 by the blower fan F, and the sucked air is sucked from the blowout opening 14. The air is blown out or exhausted from the exhaust port 16. M is a motor that rotates the blower fan F.

  The heater unit 20 includes a rectangular frame body 21 attached in the blowout opening 14 and three PTC heaters 22 attached in the frame body 21. A base 21 </ b> B is formed on the outer peripheral surface of the upper portion of the frame body 21. The base 21B is in contact with a reinforcing rib 61 formed on the bottom plate 60 shown in FIGS. 2 and 5, and restricts the mounting position of the heater unit 20. 62 to 65 are screw bosses.

  The air guided to the blowing opening 14 by the damper D is blown out from the lower surface opening of the frame body 21 through the frame body 21 of the heater unit 20, and the lower surface opening of the frame body 21 is substantial. The blowout opening 14 is formed.

  The PTC heater 22 includes a heater plate 22A and heat radiating fins 22B provided on both sides of the heater plate 22A.

  Four PTC heaters 22 are attached to the frame body 21, and the position where the fourth PTC heater is attached (the right end portion of the frame body 21 in FIG. 2) is a heat-resistant resin such as PBT. A rectifying member 30 made of (polybutylene terephthalate) is attached.

  As shown in FIGS. 3 and 4, the rectifying member 30 is a flat plate receiving portion 31 that receives the air blown by the blower fan F, and a curve that guides the air received by the receiving portion 31 to the PTC heater 22 side. And a holding wall 33 formed on the lower surface (in FIG. 4) of the receiving portion 31 and extending downward.

  The width W1 of the rectifying member 30 is set to be substantially the same as the width W2 of the PTC heater 22 (width in the direction orthogonal to the longitudinal direction).

  A holding portion 34 is formed between the holding wall portion 33 and the guide portion 32, and a temperature fuse (temperature detection member) 35 is attached to the holding portion 34. Protrusions 32 a and 33 a are provided at both ends of the guide portion 32 and the holding wall portion 33 so that the lead wire 35 </ b> R of the thermal fuse 35 does not come off from the holding portion 34.

  Further, the rectifying member 30 is detachably attached to the frame body 21 in the same manner as the PTC heater 22, and the PTC heater 22 at any position is detachably attached. In this embodiment, an example of the bathroom air conditioner 10 in which the specification is changed for low power consumption by removing the fourth PTC heater 22 (in FIG. 2) from the left is shown.

The rectifying member 30 does not have to be plate-shaped like a rectifying plate, and only needs to be able to guide air to the blowout opening 14 even slightly.
[Operation]
Next, operation | movement of the bathroom air conditioner 10 comprised as mentioned above is demonstrated.

  When the heating mode is set by operating a remote controller (not shown), the damper D is switched to the solid line position, the PTC heater 22 is energized, and the blower fan F is rotated.

  With the rotation of the blower fan F, the air in the bathroom is sucked into the suction opening 13, and the sucked air is blown into the damper chamber 17 by the blower fan F.

  Then, the air blown into the damper chamber 17 is changed in direction by approximately 90 degrees downward by the damper D and flows into the frame body 21 of the heater unit 20.

  A part of the air whose direction is changed by the damper D hits the receiving portion 31 of the rectifying member 30 and is further guided to the PTC heater 22 in the frame 21 by the guide portion 32 of the rectifying member 30. This rectification can reduce noise generated when air flows.

  The air that has flowed into the frame body 21 is heated by the PTC heater 22 and is blown out from the lower surface opening of the frame body 21, that is, the outlet opening 14 into the bathroom. Thereby, the bathroom is heated.

  As described above, since the rectifying member 30 is attached to the position where the fourth PTC heater is attached, it is possible to prevent the cold air from blowing downward from the position of the rectifying member 30.

  Further, since the temperature fuse 35 is attached to the holding portion 34 of the rectifying member 30, the temperature of the third PTC heater 22 (in FIGS. 1 and 2) from the left can be detected. In addition, since the flow velocity of the air flowing in the blowout opening 14, that is, in the frame 21, decreases toward the right side, the temperature of the third PTC heater 22 from the left becomes the highest, and therefore the temperature of all the PTC heaters 22 A rise abnormality can be reliably detected.

  Furthermore, since the rectifying member 30 is attached to the position (fourth position from the left) of the PTC heater in the frame body 21 where the flow velocity is the slowest part, the influence on the flow velocity of the air blown out from the blowout opening 14 Can be minimized.

  When the ventilation mode is set, the damper D is switched to the position of the solid line shown in FIG. 2, and the PTC heater 22 is brought into a non-energized state. Then, the air in the bathroom is sucked into the suction opening 13 by the rotation of the blower fan F. The air sucked into the suction opening 13 is blown by the blower fan F to the exhaust port 16 via the damper chamber 17 and further exhausted from the exhaust port 16 to the outside through the exhaust duct (not shown), not shown. Dry air from the garage (undercut) provided on the door of the bathroom enters the bathroom, and clothes can be dried in the bathroom.

  When the drying mode is set, the damper D is switched to the chain line position and the PTC heater 22 of the heater unit 20 is energized. Then, the air in the bathroom is sucked into the suction opening 13 by the rotation of the blower fan F. The air sucked into the suction opening 13 is blown to the damper chamber 17 by the blower fan F.

  Part of the air blown into the damper chamber 17 is changed in direction by the damper D, passes through the frame 21 of the heater unit 20, is heated by the PTC heater 22, and is blown out from the blowing opening 14 to the bathroom. This warms up the bathroom.

  Further, the other moist air blown into the damper chamber 17 is exhausted from the exhaust port 16 to the outside through an exhaust duct (not shown). On the other hand, dry air enters from the louver (undercut) provided at the bathroom door (not shown) and the bathroom is dried.

  When the cool air mode is set, the damper D is switched to the chain line position and the PTC heater 22 is deenergized. When the damper D is switched to the chain line position, the air sucked into the suction opening 13 flows to the blowout opening 14 through the damper chamber 17 while being exhausted from the exhaust opening 16, and the PTC heater 22 is not energized. By this, a cool wind blows out from the blowing opening 14.

  In the above embodiment, the fourth PTC heater 22 from the left (in FIG. 2) is removed and the rectifying member 30 is attached, but the rectifying member 30 is not necessarily attached to this position, and the PTC at any position The heater 22 may be removed, and the rectifying member 30 may be attached to the removed position. Also in this case, since the rectifying member 30 is attached to the position where the PTC heater 22 is removed, cold air does not blow out from the opening of the portion where the PTC heater 22 is removed. Further, by attaching the thermal fuse 35 to the holding portion 34 of the rectifying member 30, the temperature of the PTC heater 22 adjacent to the rectifying member 30 can be reliably detected no matter where the rectifying member 30 is provided. Become.

  Furthermore, although the temperature fuse 35 is attached to the holding portion 34 of the rectifying member 30, a temperature sensor other than the temperature fuse 35 may be attached.

Further, the rectifying member 30 having the same width W2 as the PTC heater 22 is attached in the frame body 21 of the heater unit 20, but when the number of the PTC heaters 22 attached to the frame body 21 is two or one, A rectifying member having a width twice or three times the width W2 may be attached.
[Second Embodiment]
6 and 7 show a bathroom air conditioner 100 of the second embodiment. The bathroom air conditioner 100 includes a resin-made main body case 111 (see FIG. 8) that is installed in the ceiling T of the bathroom, and a metal cover case 50 that covers the main body case 111. The lower surface of the main body case 111 is provided with an air inlet and a blow-out opening (not shown) as in the first embodiment, and the main body case 111 is provided with a heater unit and a damper. Since the configuration is exactly the same as the example, the description thereof is omitted.

  A terminal block 70 is disposed on the upper surface 50A of the cover case 50 as shown in FIG. 8, and a metal cover 80 covering the terminal block 70 is screwed with screws N1 and N2. Further, screw holes 51 and 52 for screwing are formed in the cover case 50. 71 is a power cord and 72 is a cord for remote control.

  As shown in FIG. 9, the main body case 111 is formed with a fan case portion 111A in which a blower fan F (see FIG. 2) is rotatably arranged. An upper surface 111Aa of the fan case portion 111A is provided with a cover case 50. A cylindrical regulating rib 112 is formed at a position corresponding to the screw hole 51 (see FIG. 8). Various harnesses H1 to H3 are wired on the upper surface 111Aa.

  For example, the restriction rib 112 restricts the wiring of the harness H2 as indicated by the chain line, and the wiring is indicated by the solid line.

  Then, the screw portion N1a of the screw N1 that screws the cover 80 to the cover case 50 enters the hole 112a of the restriction rib 112 of the cover case 50 as shown in FIG.

  Thus, when the cover 80 is screwed to the cover case 50, the threaded portion N1a of the screw N1 enters the hole 112a of the regulating rib 112, so that the harness H2 is regulated and wired as shown by the solid line in FIG. As a result, it is possible to prevent the harness H2 from being damaged by the screw portion N1a at the time of screwing.

  In the second embodiment, the cylindrical rib 112 is provided on the upper surface 111Aa of the fan case portion 111A at a position facing the screw hole 51 to which the cover 80 is attached, but the position corresponding to the other screw hole of the cover case 50 is provided. A cylindrical regulating rib may be provided on the main body case 111, and the rib 112 may not be cylindrical. For example, a plurality of protrusions may be provided so as to surround the screw N when screwed.

It is the bottom view which showed the bathroom air conditioner concerning this invention. It is sectional drawing which showed the structure of the bathroom air conditioner shown in FIG. It is the bottom view which showed the baffle member. FIG. 4 is a side view of the rectifying member in FIG. 3. It is the top view which showed the bottom plate of the lower part of a main body case. It is the side view which showed the bathroom air conditioner of 2nd Example. It is a top view of the bathroom air conditioner of FIG. It is a top view of the bathroom air conditioner which removed the cover. It is the top view which showed the main body case of the bathroom air conditioner of FIG. It is the elements on larger scale which showed the structure which screwed the cover to the cover case.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Bathroom air conditioner 11 Main body case 13 Suction opening 14 Outlet opening 22 PTC heater 30 Rectification member 34 Holding part 35 Thermal fuse F Fan

Claims (4)

A heating device comprising a main body case having a suction opening and a blowout opening, a heater provided in the blowout opening, and a blower fan that sucks air from the suction opening and blows out from the blowout opening,
A rectifying member for directing air sent from the blower fan to the heater is provided in a part of the blowout opening,
Forming a holding portion on the flow regulating member;
A heating device, wherein a temperature detection member for detecting the temperature of the heater is attached to the holding portion.   The heating device according to claim 1, wherein the rectifying member has a width that is an integral multiple of the width of the heater in a direction orthogonal to the longitudinal direction.   The heating device according to claim 1 or 2, wherein the rectifying member is disposed in a portion where the flow velocity of air in the blowout opening is slow.   The heating device according to any one of claims 1 to 3, wherein the rectifying member is made of a heat-resistant resin.

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