JP3039914B2 - Bathroom air conditioner - 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 air conditioner which can use a bathroom as a laundry drying space.

[0002]

2. Description of the Related Art Conventionally, as a bathroom air conditioner of this type, a ventilation fan for discharging air in a bathroom to the outside, a circulation fan for circulating air in the bathroom, a heater for heating the circulated air, and a circulation fan 2. Description of the Related Art There is known a bathroom air conditioner in which a filter for removing air dust is disposed in a main body casing and each device is selectively driven to perform air conditioning such as ventilation and drying in a bathroom.

When the bathroom air conditioner is used to ventilate a bathroom, for example, a ventilation fan is driven to discharge humid air in the bathroom to the outside. When drying the bathroom, the ventilation fan, the circulation fan, and the heater are driven to discharge the humidity in the bathroom to the outside by the ventilation fan, and the air heated by the heater is circulated into the bathroom by the circulation fan. Make the inside high temperature and low humidity. As a result, the generation of mold in the bathroom is prevented, and the laundry dried in the bathroom is dried.

[0004]

Incidentally, in addition to the bathroom ventilation operation and bathroom drying operation, other operations such as bathroom heating operation and bathroom cool air operation are performed. However, this bathroom air conditioner is mounted on the ceiling of a hot and humid bathroom. It is installed, and the installation environment is extremely bad for air conditioners such as a ventilation fan, a circulation fan, and a heater, and the filter is easily clogged.

As a result, the frequency of maintenance tends to increase. However, since the conventional bathroom air conditioner does not have a self-diagnosis function, the user cannot immediately identify a failure location. Therefore, when a repair request is made by the user, the service engineer must first investigate the cause of the failure on site, and prepare the repair equipment, parts, etc. at a later date and go to the site, which delays the maintenance. Had problems.

Further, in the conventional bathroom air conditioner, even when the filter is clogged or the like, the operation may be continued as it is, and the operation is performed in a state where the function of the device is not sufficiently exhibited. Had.

An object of the present invention is to provide a bathroom air-conditioning system in which maintenance is speeded up and safety is improved in view of the conventional problems.

[0008]

SUMMARY OF THE INVENTION A bathroom air conditioner according to the present invention includes a ventilation fan for discharging air in a bathroom to the outside, a circulation fan for circulating air in the bathroom, and a heater for heating the circulated air. In a bathroom air conditioner, a filter for removing dust and dirt of air blown by driving a circulation fan is disposed in a main body casing, and each device is selectively driven to perform air conditioning such as ventilation and drying of a bathroom. Detecting means for detecting an abnormality of each device and the filter, notifying means for notifying the cause of the failure by lighting or blinking of a lamp, etc .; At the time, a control means for operating the notification means is provided.

[0009] Thus, the failure of the ventilation fan, the circulation fan and the heater or the clogging of the filter can be recognized in advance by the notification means.

[0010] The detecting means may be an overheat prevention temperature switch,
When the temperature sensor disposed on the leeward and leeward sides of the heater and the rotation speed detecting means of each fan are used, when the temperature inside the main body casing becomes abnormal, the filter for clogging or overheating prevention of the temperature switch itself is prevented. A failure is determined, this is displayed on the light emitting unit of the remote control operation unit, and the air conditioner stops. When it is determined that the temperature difference between the leeward and leeward sides of the heater is abnormal based on the detection signal from the temperature sensor, the failure of the heater and the clogging of the filter are determined, and this is displayed on the light emitting section. , The air conditioning equipment stops. Further, when it is determined that the rotation speed of each fan is abnormal based on the detection signal of the rotation speed detection means, it is determined that the ventilation fan or the circulation fan has failed, and the fact of the failure is displayed on the light emitting unit. And the air conditioning equipment stops.

[0011]

1 to 6 show an embodiment of a bathroom air conditioner according to the present invention. FIG. 1 is a side sectional view of the bathroom air conditioner, and FIG. 2 is a front panel of the bathroom air conditioner. FIG. 3 is a front view showing a remote control operation unit of the bathroom air conditioner, FIG. 4 is a block diagram showing a drive circuit of the bathroom air conditioner, FIG. 5 is a drive control flowchart of the bathroom air conditioner, FIG. FIG. 3 is a plan view showing a blinking state of a remote control operation unit.

The bathroom air conditioner 1 is installed on a ceiling A of a bathroom, has a main body casing 3 whose lower surface is covered with a front panel 2, and includes a circulation fan 4, a ventilation fan 5, Three heaters 6a, 6b, 6c, and a filter 7 for removing dust are arranged.

Each of these devices 4, 5, 6a, 6b, 6c
, A bathroom ventilation operation, a bathroom cool air operation, a bathroom heating operation, a bathroom drying operation, and a bathroom mold prevention operation are performed. That is, when only the ventilation fan 5 is driven, the humid air in the bathroom is exhausted to the outside through the duct 8 as shown by the dashed arrow in FIG. Further, by driving the circulation fan 4 and the ventilation fan 5, the humid air is exhausted to the outside by the ventilation fan 4 and the circulation fan 4 at the same time as shown by the dashed arrow and the two-dot chain arrow in FIGS. Thereby, the bathroom air circulates, and the bathroom cool air is generated. Further, by driving the circulation fan 4 and energizing the heaters 6a, 6b, 6c, the bathroom air circulates in the bathroom and the circulated air is supplied to each heater 6a.
６6c to heat the bathroom. Furthermore, when the fans 4 and 5 and the heaters 6a to 6c are energized, the bathroom is heated similarly to the bathroom heating, and the humid air in the bathroom is exhausted to the outside to dry the bathroom. Furthermore, in this bathroom drying operation, each heater 6
When only one of a to 6c is energized, drying in the bathroom is performed while saving energy, which is particularly suitable as an operation for preventing the occurrence of mold.

These various operations are selected by the switches 9a, 9b and 9c of the remote control operation unit 9 shown in FIG. 3, and the operation switch 9a selects the energization / non-energization of the power supply, and the operation changeover switch 9b. The various operation modes are selected, and various operation times of 0.5 hour, 1 hour, 2 hours, 3 hours, 4 hours, 6 hours, and 9 hours are selected by the timer switch 9c. These selection states are displayed by turning on a lamp 9d, which is a notification means arranged next to each of the switches 9a to 9c.

In the bathroom air conditioner 1 having the above-described structure, the present invention provides various detecting means, that is, an overheat prevention temperature switch 10 and heaters 6a, 6b, 6 as shown in FIG.
thermistors 11, 12 arranged on the leeward and leeward sides of c.
Hall IC installed in circulation fan 4 and ventilation fan 5
13 and 14.

Here, the overheat prevention temperature switch 10 outputs when the main body casing 3 has an abnormal overheat temperature for 10 minutes or outputs an abnormal overheat temperature six times per hour. This abnormal state is determined by the CPU 15 of the microcomputer as the cause of the failure of the overheat prevention temperature switch 10 itself, the clogging of the filter 7, or the decrease or stop of the rotation output of the circulation fan 4,
Judge as abnormal.

The detected temperatures of the thermistors 11 and 12 are input to the CPU 15, and the detected temperature T1 of the leeward thermistor 12 and the detected temperature T2 of the leeward thermistor 11 are determined.
(T1−T2> 5deg... (1) 3deg ≦ T1−T2 ≦ 5deg. (2) T1−T2 <3deg (3) If the above expression (2) is satisfied, it is determined to be normal, and if the above expression (1) is satisfied, the thermistors 11 and 12 have failed, the rotational output of the circulation fan 4 has decreased, or the filter 7 has been clogged. Is determined as the cause, and when the above equation (3) is satisfied, it is assumed that the cause is a decrease or stop of the heating output due to a failure such as disconnection of the heaters 6a to 6c, or a stop of the circulation fan 4, Judge as abnormal.

Further, the detected rotation speed N of each of the Hall ICs 13 and 14 is input to the CPU 15, and when this detected rotation speed N is lower than the set rotation speed N1, it is determined that the fans 4 and 5 are out of order. When the rotation speed is higher than N1, the Hall I
It recognizes that it is a failure of C13 and C14, and determines that it is abnormal.

Based on the determination, the CPU 15 controls the lamp 9d via the lamp drive circuit 16, and controls the air conditioner 18 such as the circulation fan 4, the ventilation fan 5, and the heaters 6a to 6c via the air conditioner drive circuit 17, respectively. Drive control is performed as shown in the flowchart of FIG.

That is, whether an abnormality is detected based on the detection signal of the overheat prevention temperature switch 10 (S1), whether an abnormality is detected based on the detection signals of the thermistors 11 and 12 (S2), detection of the Hall IC 13 It is determined whether an abnormality has been detected based on the signal (S3) and whether an abnormality has been detected based on the detection signal of the Hall IC 14 (S4).

Here, when an abnormality is detected in step S1, the lamp 9d for 9 hours is used as shown in FIG.
1 flashes (S5), and when an abnormality is detected in step S2, the lamp 9d for the timer 6 hours as shown in FIG.
2 flashes (S6), and when an abnormality is detected in step S3, the lamp 9d for 4 hours of the timer is used as shown in FIG.
3 flashes (S7), and when an abnormality is detected in step S4, as shown in FIG.
4 flashes (S8). Thereafter, the air conditioner 18 is stopped (S9).

From the blinking of each of the lamps 9d1 to 9d4, for example, a failure location is determined as follows. First, timer 9
The time lamp 9d1 blinks, and the other lamps 9d2 to 9d
A case where 4 is not blinking will be described. When the lamp 9d1 for the timer 9 is blinking, as described above, the failure of the overheat prevention temperature switch 10 and the
May be considered, or the circulation fan 4 may be malfunctioning. However, when the filter 7 is clogged or the circulation fan 4 malfunctions, the other lamps 9d2 and 9d3 may also blink. Therefore, as long as the other lamps 9d2 and 9d3 are not blinking, the possibility of clogging of the filter 7 or failure of the circulation fan 4 is low, and the overheat prevention temperature switch 10
Can be determined as a failure.

Next, a case will be described in which the lamp 9d2 for the timer of 6 hours blinks and the other lamps 9d1, 9d3, 9d4 do not blink. This timer 6 hours ramp 9
When d2 is blinking, as described above, the failure of the thermistors 11, 12 itself, the failure of the heaters 6a to 6c, the failure of the circulation fan 4, or the clogging of the filter 7 can be assumed. Failure or filter 7
If the cause is clogging, the other lamp 9d1,
It is considered that 9d3 also blinks. Therefore, other lamps 9
As long as d1 and 9d3 are not blinking, the possibility of filter clogging or failure of the circulation fan 4 is low, and the heater 6a
6c failure or thermistors 11 and 12 failure.

Further, when only the lamp 9d3 for the timer 4 is blinking, a failure of the Hall IC 13 or a failure of the circulation fan 4 is assumed, but the other lamps 9d1, 9
As long as d2 is not blinking, it can be determined that the possibility of failure of the circulation fan 4 is low and the possibility of failure of the Hall IC 13 is high.

Further, when only the lamp 9d4 for the timer 3 hours is blinking, as described above, the Hall IC
14 or a failure of the ventilation fan 4 is assumed.

Further, when both the lamp 9d1 for the timer 9 hours and the lamp 9d2 for the timer 6 hours blink, and the other lamps 9d3 and 9d4 do not blink, the filter 7 may cause the blinking of both lamps. Since the clogging and the failure of the circulation fan 4 are common, it can be determined that any of these possibilities is high.

As described above, the cause of the failure is determined based on which of the lamps 9d1 to 9d4 is blinking or in which combination. Therefore, when the bathroom air conditioner 1 is out of order, the lamps 9d1 to 9d9 at blinking points are received from the user.
It suffices to have d4 contacted. This allows the serviceman to identify the location of the failure, prepare the corresponding parts in advance, and go to the site, so that only one maintenance is required.

Lamps 9d1 to 9d for indicating a failure
When 4 blinks, the air conditioner 18 is stopped, for example, the power supply to the heaters 6a to 6c, which are heating sources, is stopped, so that the safety is excellent.

In the above embodiment, the lamps 9d1 to 9d9
Although the lamp 9d of the timer switch 9c is used as d4, for example, the lamp 9d of the operation changeover switch 9b may be used. In addition, the failure indication is displayed on the lamps 9d1 to 9d1.
Although this is performed by blinking 9d4, it may be turned on.

[0030]

As described above, according to the present invention,
Since the failure of the ventilation fan, the circulation fan, and the heater or the clogging of the filter can be recognized in advance by the notification means, the maintenance can be performed easily and quickly. In addition, when a failure is displayed, the safety is improved because the air conditioner is stopped.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a bathroom air conditioner.

FIG. 2 is a bottom view of the bathroom air conditioner with a front panel removed.

FIG. 3 is a front view showing a remote control operation unit of the bathroom air conditioner.

FIG. 4 is a block diagram showing a drive circuit of the bathroom air conditioner.

FIG. 5 is a drive control flowchart of a bathroom air conditioner.

FIG. 6 is a front view showing a blinking state of a remote control operation unit of the bathroom air conditioner.

[Explanation of symbols]

1 ... bathroom air conditioner, 4 ... circulation fan, 5 ... ventilation fan,
6a, 6b, 6c: heater, 10: overheat prevention temperature switch, 11: thermistor, 13, 15: Hall IC, 15
... CPU.

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-63-77498 (JP, A) JP-A-4-203727 (JP, A) JP-A-9-94395 (JP, A) (58) Investigation Field (Int.Cl. ⁷ , DB name) F24F 7/10 F26B 9/02 F24D 5/02 F24D 15/00 F24H 3/04 F24H 9/20

Claims (7)

(57) [Claims] 1. A ventilation fan for discharging air in a bathroom to the outside, a circulation fan for circulating air in a bathroom, a heater for heating the circulating air, and a filter for removing dust from the circulating air. In a bathroom air conditioner arranged in a main body casing and selectively driving each of the devices to perform air conditioning such as ventilation and drying of a bathroom, a detection unit that detects an abnormality of each of the devices and the filter, and a failure cause. and informing means for informing, to determine whether the basis of the detection signal of the detection means abnormal, when it is judged to be abnormal have a control means for operating該報intellectual means, one of said detecting means Arranged on the leeward and leeward sides of the heater
The temperature sensor placed on the windward side
The temperature difference between the temperature and the temperature detected by the temperature sensor on the downwind side
When the temperature falls outside the range of the constant temperature difference, the control means outputs the information.
A bathroom air conditioner characterized by operating an informing means. Other sensing means of claim 2, wherein said detecting means is prevent overheating temperature switch for detecting the abnormal overheating temperature of the main body casing, a fault signal superheated preventing thermal switch and continues for a predetermined time or longer 2. The bathroom air conditioner according to claim 1, wherein the control unit activates the notifying unit when outputting the signal or when outputting a predetermined number of failure signals per unit time. 3. A rotation speed detection unit for detecting a rotation speed of the ventilation fan, wherein the other detection unit among the detection units is a rotation speed detection unit.
2. The bathroom air conditioner according to claim 1, wherein said control means activates said notifying means when said rotation speed is out of a predetermined rotation speed range. 4. The rotation speed detection means for detecting the rotation speed of the circulation fan, wherein the other detection means among the detection means is;
2. The bathroom air conditioner according to claim 1, wherein said control means activates said notifying means when said rotation speed is out of a predetermined rotation speed range. 5. The bathroom air conditioner according to claim 1, further comprising at least two of said detecting means, said notifying means and said control means. Wherein said informing means is remote control of the timer switch timer lamp, according to any one of claims 1 to 5, characterized in that a light emitting portion of the switching lamp operation selector switch Bathroom air conditioner. 7. The air conditioner such as the ventilation fan, the circulation fan, and the heater when the control unit operates the notification unit.
The bathroom air conditioner according to claim 6 .