JP3979248B2 - Heater unit for air conditioner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heater unit used in an air conditioner such as a heating device having a heating function in which a plurality of heaters are arranged in parallel in a frame, a drying device, and a ventilation device.
[0002]
[Prior art]
Conventionally, a bathroom ventilator provided with a heater as shown in FIGS. 9 and 10 is known (see, for example, Patent Document 1).
[0003]
The bathroom ventilator 100 includes a first air inlet 101 for taking in air in the bathroom, an air outlet 102 for exhausting the intake air to the outside, and a second air inlet for taking in the air in the bathroom. 103, the air outlet 104 for returning the air taken in from the second air inlet 103 into the bathroom, the heater unit 110 provided in the air outlet 104, and the air from the first air inlet 101 to exhaust the air A blower 105 that blows air to 102 and a blower 106 that blows air sucked from the second air inlet 103 to the air outlet 104 are provided.
[0004]
According to the bathroom ventilator 100, the ventilation of the bathroom is performed by driving the blower 105 so that air is taken in from the first air inlet 101 and exhausted from the air outlet 102. During this ventilation, the air containing moisture in the bathroom is exhausted outside the room. Further, air is sucked from the second air inlet 103 by driving the blower 106 and blown out from the air outlet 104 to the bathroom, and the air blown out from the air outlet 104 is heated by the heater 111 of the heater unit 110. In this way, the bathroom is heated. When both fans 105 and 106 are driven, air containing moisture in the bathroom is exhausted to the outside of the room and hot air is blown out from the outlet 104, so that the bathroom becomes a drying room and clothes can be dried. Become.
[0005]
As shown in FIG. 11, the heater unit 110 includes a plurality of heaters 111 arranged in parallel on a frame (not shown), and electrode terminals 112 and 113 are provided at both ends of each heater 111. Are provided with screw holes 112A and 113A. Then, the screw N1 is passed through the hole 115A of the ring-shaped connection terminal 115 to which the lead wire 114 is connected and the hole 112A of the electrode terminal 112, and the nut 116 is screwed to the screw N1 as shown in FIG. Thus, the connection terminal 115 is fixed to each electrode terminal 112.
[0006]
Similarly, a connection terminal 115 in which a lead wire 114 is connected to each electrode terminal 113 is fixed by a screw N1. The heaters 111 are connected in parallel by fixing the connection terminals 115 to the electrode terminals 112 and 113.
[0007]
[Patent Document 1]
Japanese Utility Model Publication No. 5-39497 (paragraph 10, FIG. 4, FIG. 5)
[0008]
[Problems to be solved by the invention]
By the way, the connection terminal 115 is fixed by the screw N1 because the space on the back side of the electrode terminals 112 and 113 is narrow as shown in FIG. 12, and the electrode terminal is held while holding the nut 116 with, for example, radio pliers 117. The other hand must have a driver 118, and the operation when tightening the screw N1 by the driver 118 is troublesome. Moreover, since the screw N1 is made of stainless steel so that it does not rust due to moisture in the bathroom, a magnet driver having a magnetized tip cannot be used. Therefore, the connection work between the electrode terminals of the heater unit 110 is very difficult. There was a problem of being troublesome.
[0009]
An object of the present invention is to provide a heater unit for an air conditioner in which connection work between electrode terminals of the heater unit can be easily performed.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the invention of claim 1 is a frame, a plurality of heaters arranged in parallel to the frame, electrode terminals provided at both ends of each heater, and electrical connection between the electrode terminals. A heater unit for an air conditioner including first and second electrode plates connected to
The electrode terminal has an L shape having one side surface in the heater arrangement direction and the other side surface in the longitudinal direction of the heater,
The first and second electrode plates include a substrate portion extending in the direction in which the heaters are arranged, and a plurality of flat plate-like joining portions that protrude downward from the substrate portion,
A female screw portion is provided at a joint portion of the first and second electrode plates, a hole is provided on one side surface of the electrode terminal, and a female screw of the first and second electrode plates is provided on a side surface of the electrode terminal. It is characterized by fixing with a screw .
[0011]
According to a second aspect of the present invention , a female screw portion is provided in a joint portion of the first and second electrode plates, a hole is provided in one side surface of the electrode terminal, and the female screw portion of the first and second electrode plates is The electrode terminal is fixed by screwing through a hole on one side surface.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a bathroom ventilator equipped with a heater unit for a ventilator which is one of the air conditioners according to the present invention will be described with reference to the drawings.
[0013]
1 and 2, reference numeral 1 denotes a bathroom ventilator. The bathroom ventilator 1 has a body case 2 accommodated in an opening t provided in the ceiling T in advance, and has a screw hole TH in the ceiling T. Via a screw (not shown). The lower surface of the main body case 2 is provided with an air inlet 3 for taking in air in the bathroom (not shown) and an air outlet 4 for blowing air into the bathroom. A heater unit 20 is provided in the air outlet 4, and air blown from the air outlet 4 is heated by the ceramic heater 22 of the heater unit 20.
[0014]
An exhaust port 5 is provided on the side of the main body case 2, and the exhaust port 5 communicates with the outside through a duct 15 as shown in FIG. A damper D is provided in the main body case 2 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.
[0015]
The damper D is rotated around the shaft 8 shown in FIG. 3 to switch its position, and the shaft 8 is rotatably held by a pair of support members 9 provided in the heater unit 20.
[0016]
Downward ribs L are formed on both side edges DS of the damper D, and the ribs L circulate in the side edges DS of the damper D and the main body case 2 when the damper D is switched to the ventilation position. This is to prevent wind from leaking from the gap between the side wall 4b of the road 4A.
[0017]
When the damper D is switched to the solid line position (heating mode position), the air inlet 3 and the air outlet 4 communicate with each other through the circulation air passage 4A, and the ceramic heater 22 is energized to enter the air heating mode. Air flows to the circulating air passage 4A and the outlet 4 to heat the inside of the bathroom. In this state, when the ceramic heater 22 is de-energized, a cool wind blows out from the air outlet 4 and the cool air mode is set.
[0018]
When the damper D is switched to the broken line position (ventilation mode position), the intake port 3 and the exhaust port 5 communicate with each other via the ventilation air passage 5A to enter the ventilation mode, and the intake port 3, the ventilation air passage 5A, and the exhaust air Air flows into the mouth 5 and ventilation is performed. Further, when the damper D is switched to a chain line position (drying mode position) which is an intermediate position, the ceramic heater 22 is energized to enter a drying mode, and air flows to the intake port 3, the ventilation air passage 5A, and the exhaust port 5 to become wet. The air is discharged to the outside, and instead, dry air is taken in from a suction port (not shown) provided in the bathroom door, and air flows to the suction port 3, the circulation air passage 4 </ b> A, and the blowout port 4. The temperature in the bathroom rises moderately and clothes can be dried.
[0019]
When the operation of the bathroom ventilator 1 is stopped, the damper D is switched to the solid line position and the ceramic heater 22 is in a non-energized state.
[0020]
As shown in FIG. 2, a centrifugal fan (blower) F is provided in the main body case 2, and air is sucked by the centrifugal fan F, and the sucked air is blown out from the blowout port 4 or the exhaust port 5. It is supposed to exhaust from. M is a motor that rotates the centrifugal fan F.
[0021]
As shown in FIGS. 4 and 5, the heater unit 20 includes an annular heater support frame (frame body) 21 formed in a square shape, and a plurality of ceramic heaters (heaters) 22 attached to the heater support frame 21. And a side wall frame 23 (see FIG. 3) that is attached to the heater support frame 21 and surrounds the ceramic heater 22.
[0022]
Radiation fins 24 are attached to each ceramic heater 22, and resin bases 25 are attached to both ends of each ceramic heater 22. Each pedestal 25 has a holding portion 25 </ b> A that holds the end of the ceramic heater 22, and a pedestal portion 25 </ b> B that is formed below the holding portion 25 </ b> A and is attached to the heater support frame 21. By attaching the pedestal 25B to the heater support frame 21, the ceramic heater 22 is attached to the heater support frame 21 via the pedestal 25.
[0023]
Each holding portion 25A is attached with an electrode terminal 30 (see FIG. 6) that is electrically connected to one end of the ceramic heater 22, and this electrode terminal 30 is formed in an L shape, and its tip is flat. The connecting portion 30A is formed with a screw hole 30a. The electrode terminals 30 are electrically connected by first and second electrode plates 40 and 50, respectively.
[0024]
As shown in FIG. 6, the electrode plate 40 includes a substrate portion 41 extending in the left-right direction, and a plurality of flat plate-like joint portions 42 </ b> A to 42 </ b> D that protrude downward (in FIG. 6) from the substrate portion 41. ing. Each joint part 42A-42D is provided in the position corresponding to the connection part 30A of the electrode terminal 30 of each ceramic heater 22, and holes 42a-42d are formed in each joint part 42A-42D, and each hole 42a-42d. Has a female thread.
[0025]
Since the second electrode plate 50 has the same configuration as the electrode plate 40, the description thereof is omitted.
[0026]
The heater unit 20 is assembled by first attaching the pedestal portions 25B of the pedestal 25 attached to both ends of the ceramic heater 22 to the heater support frame 21 in the same manner as in the prior art, and each ceramic heater 22 as shown in FIG. It is attached to the support frame 21. Next, each joint portion 42 of the first electrode plate 40 is aligned with the back surface of the connection portion 30 </ b> A of each electrode terminal 30. Then, as shown in FIG. 6, the screw Na <b> 1 is passed through the hole 36 </ b> A of the connection terminal 36 to which the lead wire 35 is connected, and the screw Na <b> 1 is connected to the hole 30 a of the connection portion 30 </ b> A of the electrode terminal 30 and It is inserted into the hole 42a of the joint 42A.
[0027]
Then, if the screw Na1 is turned by the driver 60 as shown in FIG. 7, the female screw is cut in the hole 42a of the joint portion 42A of the first electrode plate 40, so that the screw 42 is inserted into the hole 42a of the joint portion 42A. As Na1 is screwed, the connecting portion 30A of the electrode terminal 30, the joining portion 42A of the first electrode plate 40, and the connecting terminal 36 are fastened and fixed by the screw Na1, as shown in FIG. At the time of tightening by the driver 60, the joint portions 42 </ b> A to 42 </ b> D of the first electrode plate 40 are provided on the substrate portion 41 extending in the left-right direction, and the substrate portion 41 is above the connection portion 30 </ b> A of the electrode terminal 30. Since the substrate portion 41 can be held by hand so as not to rotate, it is not necessary to hold the joint portion 42A with radio pliers or the like.
[0028]
For this reason, the connection work of the connection part 30A of the electrode terminal 30, the joint part 42A of the first electrode plate 40, and the connection terminal 36 by screw Na1 can be easily performed.
[0029]
Similarly, the screws Na2 to Na4 are passed through the holes 30a of the connection portion 30A of the electrode terminal 30 and the holes 42b to 42d of the joint portions 42B to 42D of the first electrode plate 40, and the screws Na2 to Na4 are turned by the driver 60. If it goes, the screws Na2 to Na4 are screwed into the holes 42b to 42d of the joint portions 42B to 42D because the holes 42b to 42d of the joint portions 42B to 42D of the first electrode plate 40 are cut. The connecting portion 30A of the electrode terminal 30 and the joint portions 42B to 42D of the first electrode plate 40 are fastened and fixed by screws Na2 to Na4.
[0030]
In this case, since the first electrode plate 40 is fixed by the screw Na1, there is no need to hold down the substrate portion 41 of the first electrode plate 40, and the driver 60 is simply turned. For this reason, the connection work of the connection portions 30B to 30D of the electrode terminal 30 and the joint portions 42B to 42D of the first electrode plate 40 by fixing the screws Na2 to Na4 is very simple. In addition, since the joint portions 42A to 42D of the first electrode plate 40 are electrically connected by the substrate portion 41, the connection terminals 36 to which the lead wires 35 are connected are connected to the joint portions 42B to 42B of the first electrode plate 40. There is no need to connect to 42D.
[0031]
Since the second electrode plate 50 may be attached to the electrode terminal 30 by screws Nb1 to Nb4 (see FIG. 4) in the same manner as described above, the connection portion 30A of the electrode terminal 30 and the joint portions 52A to 52D of the second electrode plate 50 are used. The connection work with is very easy.
[0032]
As described above, the connection work between the connection portions 30A to 30D of the electrode terminal 30 and the joint portions 42A to 42D and 52A to 52D of the first and second electrode plates 40 and 50 can be performed very easily. That is, the connection work between the electrode terminals 30 can be easily performed.
[0033]
In the above embodiment, the first and second electrode plates 40 and 50 are fixed to the connection portions 30A to 30D of the electrode terminal 30 with screws. However, for example, pins may be press-fitted and fixed. Moreover, although the heater unit 20 attached to the bathroom ventilator has been described, the heater unit 20 may be applied to a ventilator that ventilates a room other than the bathroom, such as a dressing room or a washroom. Of course, the present invention can also be applied to a heating device that does not have a ventilation function.
[0034]
【The invention's effect】
As described above, according to the present invention, the connection work between the electrode terminals of the heater unit can be easily performed.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a bathroom ventilator equipped with a heater unit according to the present invention.
FIG. 2 is a cross-sectional view showing a configuration of the bathroom ventilation device shown in FIG.
FIG. 3 is a perspective view showing a heater unit to which a damper is attached.
FIG. 4 is an exploded perspective view showing a configuration of a heater unit.
FIG. 5 is a perspective view showing a state in which a plurality of heaters are attached to a heater support frame.
6 is a partially enlarged view in which a part of FIG. 4 is enlarged. FIG.
FIG. 7 is an explanatory view showing a state in which the first electrode plate is screwed and fixed to the electrode terminal.
FIG. 8 is a side view showing a screwed state of the first electrode plate.
FIG. 9 is a cross-sectional view showing a configuration of a conventional bathroom ventilation apparatus.
10 is a bottom view showing the bathroom ventilator shown in FIG. 9. FIG.
FIG. 11 is an explanatory diagram showing a configuration of a conventional heater unit.
FIG. 12 is an explanatory view showing a method of fixing a connection terminal to an electrode terminal of a heater with a screw.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bathroom ventilation apparatus 2 Main body case 3 Intake port 4 Outlet 4A Circulation air path 5 Exhaust port 5A Ventilation air path 8 Shaft 9 Support member 20 Heater unit 21 Heater support frame
22 Ceramic heater (heater)
23 Side wall frame 24 Radiation fin 25 Pedestal 25A Holding part 25B Pedestal part 30 Electrode terminal 30A Connection part 30a Hole 35 Lead wire 36 Connection terminal 36A Hole 40 First electrode plate 41 Substrate part 42A-42D Joint part 42a-42b Hole 50 Second Electrode plate 60 Driver Na1 to Na4 Screw Nb1 to Nb4 Screw F Centrifugal fan D Damper M Motor

Claims (1)

An air conditioner comprising a frame, a plurality of heaters arranged in parallel to the frame, electrode terminals provided at both ends of each heater, and first and second electrode plates electrically connected to the electrode terminals A heater unit for the device,
The electrode terminal has an L shape having one side surface in the heater arrangement direction and the other side surface in the longitudinal direction of the heater,
The first and second electrode plates include a substrate portion extending in the direction in which the heaters are arranged, and a plurality of flat plate-shaped joint portions that protrude downward from the substrate portion,
A female screw portion is provided at a joint portion of the first and second electrode plates, a hole is provided on one side surface of the electrode terminal, and a female screw of the first and second electrode plates is provided on a side surface of the electrode terminal. A heater unit for an air conditioner characterized by being fixed with screws .

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