JP3495803B2 - Bathroom heating ventilation dryer - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathroom heating ventilation dryer which circulates warm air in a bathroom to dry laundry and the like, and to dry, ventilate and heat the bathroom.

[0002]

2. Description of the Related Art In recent years, means for drying clothes by using a bathroom as a drying room has been developed. As shown in FIG. 1, the basic structure 3 is a main body of a bathroom heating ventilation dryer, and a suction port 11 on the bathroom side. And a discharge port 12 on the bathroom side, and a fan 16 for ventilation, a fan 18 for ventilation, and heaters 9a, 9b, 9c (Fig.
4) , the current plate 1 and the like are provided.

In the above structure, the air in the bathroom is sucked from the bathroom side intake port 11 by the blower fan 16,
Heat is exchanged by the heaters 9a, 9b, 9c arranged in a row in a row at a position facing the bathroom-side discharge port 12 through the air flow path 15, and air is supplied into the bathroom from the bathroom-side discharge port 12. According to the above-mentioned conventional configuration, since the amount of air supplied from the blower fan 16 is different depending on the heaters 9a, 9b, 9c, the temperature of the warm air blown out may be high where the amount of air is small. Further, according to the ventilation circuit having the conventional configuration, in order to obtain the required air volume, the heater 9c and the rectifying plate 1 are used.
It was necessary to make the interval of a certain value or more. Further, although the amount of air supplied to the bathroom is adjusted by the air amount switching means provided in the blower, there is a risk that the blowout temperature becomes too high because the total amount of heat of the heaters provided is not changed. Further, in the conventional model, all the heaters are energized at the same time at the start of operation, so that the current value at the time of start-up becomes excessively large, which causes a problem with the blower failure or the life of parts, which is also dangerous.

[0004]

The present invention eliminates the drawbacks of the prior art, and equalizes the temperature of the hot air blown into the bathroom and increases the amount of air passing through the heater to improve the heat exchange efficiency. In addition to arranging ducts and ducts, the heater capacity is controlled so as to suppress the temperature rise of warm air when the air volume is switched to "weak", and the heater is energized so that the maximum current value at the start of operation can be suppressed. It is an object of the present invention to provide a bathroom heating ventilation dryer by controlling the start time so as to be shifted by a certain time and supplying a stable temperature of hot air and improving safety during operation.

[0005]

[Means for Solving the Problems] To achieve the above object,
The invention of claim 1 comprises a front grill having a bathroom-side suction port and a bathroom-side discharge port that communicate with a bathroom, and a main body having an outdoor-side discharge port that communicates with the outside, and the bathroom-side suction port in the main body. An air flow path communicating with the bathroom side discharge port is formed, and the air flow path is provided between the bathroom side intake port and the bathroom side discharge port.
Arrange a circulation fan driven by a blower electric motor
In the flow path, there is a circulation fan between the circulation fan and the bathroom outlet.
The air blown from the fan is directed straight toward the bathroom outlet.
Bathroom heating with straightening vanes that change flow in opposite directions
In the ventilation dryer, the air flow path inside the straightening vane is
Providing multiple heaters in parallel facing each other in the direction of air flow
Along with the distance between each heater and the current plate,
The feature is that they are arranged in stages so that the distance from the discharge port on the bathroom side is increased.

[0006]

According to a second aspect of the present invention, the blower electric motor is provided with air volume switching means, and the heat generation amount of a plurality of heaters is controlled in association with the air volume switching by the air volume switching means. .

The invention of claim 3 is characterized in that the rising surface of the straightening plate is provided close to the fin end surface of the heater provided at the final end of the air passage.

The invention of claim 4 is characterized in that the operation start timings of the plurality of heaters are controlled so as to be shifted by a fixed time.

[0010]

According to the bathroom heating ventilation dryer of claim 1, the rectification is performed.
Parallel to the air flow path inside the plate facing the air flow direction
A plurality of heaters are installed in each of the
The distance from the bathroom outlet increases as the
Since the heaters are arranged in stages as described above, the air is uniformly and evenly applied to the plurality of heaters.

[0011]

According to the bathroom heating ventilation dryer of claim 2 ,
In addition to the operation of claim 1, since the blower motor is provided with the air volume switching means and the heater capacity varying means,
The heater capacity is controlled in proportion to the air volume.

According to the bathroom heating ventilation dryer of claim 3 , in addition to the effect of claim 1 or 2, the rising surface of the current plate is
Since it is provided close to the fin end surface of the heater provided at the final end of the air flow path, the plurality of heaters are uniformly blown with air.

According to the bathroom heating ventilation dryer of claim 4 ,
In addition to the effects of the first, second or third aspect, since the operation start timings of the plurality of heaters are controlled so as to be shifted by a fixed time, the maximum peak current value at the start of operation can be suppressed.

[0015]

EXAMPLE An example of the present invention will be described with reference to FIG. In the figure, 3 is a main body of a bathroom heating ventilation dryer, a front grill 13 having a bathroom side suction port 11 and a bathroom side discharge port 12 is attached, and an outdoor side discharge port 14 is provided at a rear portion of the main body 3. . Inside the main body 3, a circulation fan 16, a circulation fan casing 16a, and a rectifying plate 1 are provided, and the bathroom side suction port 11 to the bathroom side discharge port 12 are provided.
An air flow path 15 is formed up to. Then, the air flow path 15 is formed up to the lower end of the main body 3. Further straightening plate 1
A heater mounting bracket front (rear) 18a (18b) for fixing the heaters 9a, 9b, 9c by contacting the heater 9a, 9b, and 9c. , 9b, 9c in front of mounting bracket (rear) 18a
Three are attached to (18b). When the blower electric motor 20 having the circulation fan 16 is operated with the above configuration, the air in the bathroom is sucked from the bathroom side intake port 11 and passes through the circulation fan 16, and the circulation fan casing 16
a, after being heated by the heaters 9a, 9b, 9c from the air flow path 15 formed by the straightening vane 1, the bathroom-side discharge port 12
The warmer air blows and blows against the laundry to evaporate the moisture. When the ventilation electric motor 21 having the ventilation fan 21a is operated, the moist air in the bathroom is sucked in through the bathroom-side suction port 11, passes through the ventilation fan 21a, and the outdoor discharge port at the rear part of the main body 3. 14 is discharged to the outside of the room.

FIG. 3 is an enlarged sectional view A of an essential part of an embodiment of the present invention . In FIG. 2, heaters 9a, 9b, 9c, a current plate 1 and
Inside the enlarged view of the side where the air flow path 15 is shown
FIG. The heaters 9a, 9b, 9c are attached to the front (rear) 18a (18b) of the heater mounting bracket in a stepwise manner upward from the air blowing direction.
It is arranged so that the wind uniformly hits c. Further, the heater 9c attached to the final end of the air flow path 15
The gap between the fin end face and the current plate 1 was set to 3 to 7 mm, the amount of air flowing into the gap was reduced, and the heaters 9a and 9b installed on the windward side were arranged so that the wind was uniformly and evenly applied.

[0017]

The air volume is adjusted by increasing / decreasing the number of revolutions of the blower electric motor 20, and by switching the switch so that the air volume becomes "weak", the heat generation amount of the heater is reduced in association with the air volume reduction by the above operation. At least one heat
The power to the computer is controlled to stop. Also, the heater 9
PTC ceramic heaters are used for a, 9b, and 9c in place of the conventional nichrome wire sheathed heaters to prevent the danger of heater red heat. However, due to the characteristics of PTC ceramic heaters, a rush as shown in FIG. Since there is a current, the maximum peak current becomes excessive. Therefore, as shown in FIG. 7, the control relays 22a, 22b, 2 are connected to the heaters 9a, 9b, 9c, respectively.
2c is provided so that the operation start timing of the heater is shifted by a certain time. As a result, the maximum peak current can be suppressed as shown in FIG.

[0019]

As described above in detail, according to the first aspect of the invention, the air flow path inside the straightening vane is opposed to the air flow direction.
Multiple heaters are installed in parallel facing each other and each heater is
Is closer to the bathroom outlet as the distance from the straightening vane decreases.
Since the heaters are arranged in stages so that the heaters are separated from each other, the air blows evenly over the heaters and the temperature of the hot air is equalized, eliminating local high temperatures and improving the usability and safety improves.

[0020]

According to the invention of claim 2 , in addition to the effect of claim 1, at least one of a plurality of heaters provided, for example , is provided with an air volume switching means and is interlocked with the air volume switching.
Lever controls to stop the energization of the can suppress the power consumption with the presser is safety an excessive increase of the hot air temperature can be set to heating capacity commensurate with the air volume can be secured, there is also energy-saving effect.

According to the invention of claim 3 , in addition to the effects of claims 1 and 2 , the gap between the fin of the heater attached to the final end of the air passage and the current plate is set to, for example, 3 to 7 mm.
By doing so, the amount of air that flows into the gap is reduced, and the amount of air in the heater part in front of it can be secured sufficiently, so the heat exchange efficiency of each heater is improved and energy is saved, and the temperature of the hot air blown out is also uniform. The usability and safety are also improved.

According to the invention of claim 4 , claim 1 or 2
Other In addition to the third effect, for example, since each of the plurality of the operation start timing of the heater is provided a control relay to the heater is controlled so that shifting a predetermined time, it is possible to suppress the maximum peak current value during starting. For this reason, it is possible to prevent a device failure due to an overcurrent at the time of startup and also ensure safety.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a conventional bathroom heating ventilation dryer.

FIG. 2 is a schematic configuration perspective view of the bathroom heating ventilation dryer of the present invention.

FIG. 3 is an enlarged sectional view A of a main part of the bathroom heating ventilation dryer of the present invention.

FIG. 4 is an enlarged sectional view of a main part of a conventional bathroom heating ventilation dryer.

FIG. 5 is a diagram showing a change in current value at the start of operation of a conventional bathroom heating ventilation dryer.

FIG. 6 is a diagram showing changes in current value at the start of operation of the bathroom heating ventilation dryer of the present invention.

FIG. 7 is a diagram showing a circuit of a heater control relay of the bathroom heating ventilation dryer of the present invention.

[Explanation of symbols]

1 ... Current plate, 3 ... Bathroom heating ventilation dryer body, 9
a, 9b, 9c ... Heater, 11 ... Bathroom-side suction port, 1
2 ... Bathroom-side discharge port, 13 ... Front grill, 14 ... Outdoor discharge port, 15 ... Air flow path, 16 ... Circulation fan, 16a ... Circulation fan casing, 18a ... In front of heater mounting bracket, 18b ... After the heater mounting bracket, 20
... Blower electric motor, 21 ... Ventilation electric motor, 21a ... Ventilation fan, 22a, 22b, 22c ... Control relay

─────────────────────────────────────────────────── --- Continuation of the front page (56) Reference JP-A-57-121184 (JP, A) JP-A-5-157357 (JP, A) JP-A-6-86898 (JP, A) JP-A-7- 55334 (JP, A) Actual opening 4-3694 (JP, U) Actual opening 56-103142 (JP, U) Actual opening 55-166351 (JP, U) Actual opening 2-67997 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) F24H 3/04 F24D 15/00 F26B 9/02

Claims (4)

(57) [Claims] 1. A front grill having a bathroom-side suction port and a bathroom-side discharge port that communicate with a bathroom, and a main body having an outdoor-side discharge port that communicates with the outside, and the bathroom-side suction port and the above-mentioned inside of the main body. An air passage that connects the bathroom outlet is formed, and the bathroom inlet and bath are connected by the air passage.
Circulation driven by a blower motor between the room side outlet
A fan is arranged, and a circulation fan and discharge on the bathroom side are provided in the air flow path.
Between the mouth and the air blown from the circulation fan the bathroom side
Adjustment that changes the flow in a direction substantially orthogonal to the discharge port
In a bathroom heating ventilation dryer having a flow plate, the air flow path inside the straightening plate faces the air flow direction.
And multiple heaters are installed in parallel, and each heater is
As the distance to the straightening vane decreases, the distance to the discharge port on the bathroom side increases.
The bathroom heating ventilation dryer is characterized by being arranged in stages so that they are separated from each other . 2. An air volume switching means is provided in the blower motor.
In addition, the heater is proportional to the setting of the air volume by the air volume switching means.
The bathroom heating ventilation dryer according to claim 1 , wherein the capacity can be varied . 3. The rising surface of the straightening vane is the air flow path.
Installed near the fin end surface of the heater provided at the final end of the
Digit, bathroom heater ventilation drying machine according to claim 1 or 2, wherein the. 4. The operation start timing of the plurality of heaters is constant
Controls to shift the time, according to claim 1, 2 or 3 bathroom heater ventilation dryer according, characterized in that.