JPH0674521A - Air conditioner - Google Patents

Abstract

PURPOSE:To automatically clean a filter and prevent dust from being accumulated up to a certain level in the filter by determining the continuously usable time of the filter with a control means based on respective information from a dust sensor and a processing means. CONSTITUTION:A control means 16 controls to drive a driving shaft 6 on which a filter is extended, a brush 12 for removing the dust of the filter and a fan 14 for exhausting the dust, respectively, based on information from a processing means 15 for calculating the continuously usable time of the filter. During cleaning of the filter, the quantity of the dust in an exhaust air is monitored by a dust sensor 13. When the quantity of the dust reaches a specified level or lower, the continuously usable time of the filter optimum to the state of a room is determined by the control means 16 from the total quantity of the dust so that a cleaning can be carried out. Thus, the filter can be automatically cleaned and a favorable air conditioning capability can be maintained by determining the cleaning time of the filter in accordance with the condition of air in the room.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner provided with a control means for automatically cleaning a filter by determining when to clean the filter.

[0002]

2. Description of the Related Art In recent years, as an indoor unit of an air conditioner, a unit for cleaning air has been commercialized.

Conventionally, there is an indoor unit of this type of air conditioner as shown in FIG. As shown in the figure, the air conditioner is composed of an indoor unit main body 21 and an outdoor unit (not shown). Inside the indoor unit main body 21, a heat exchanger 22, a blower fan 23, etc. are arranged to exchange heat. A cartridge-type filter 24 is provided at a position located on the front surface of the container 22.

[0004]

However, in the above-mentioned conventional structure, in order to remove the dust adhering to the filter 24, it was necessary to remove the filter 24 from the indoor unit main body 21 and perform cleaning. Especially when the operation is performed without cleaning the filter 24 for a long time,
There is a problem that dust is accumulated on the filter 24 and the air conditioning ability is deteriorated.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide an air conditioner capable of automatically cleaning a filter by determining when to clean the filter.

[0006]

In order to achieve the above object, the first object of the present invention is to provide a belt provided between a heat exchanger arranged in an indoor unit body and a suction port. -Shaped filter, drive shaft and driven shaft with this filter stretched, servo motor connected to the drive shaft, brush for removing dust from the filter, and brush for communicating with the suction port and the discharge port inside. An exhaust pipe having the same, a dust sensor installed in the exhaust pipe, a dust discharging fan provided in the exhaust pipe, an arithmetic processing means for calculating a continuous use time of the filter, and a control means for controlling the servomotor and the fan. And the control means determines the predetermined continuous usable time of the filter from the information of the dust sensor and the arithmetic processing means.

A second means for solving the problem is to provide an airflow direction control blade at the air outlet of the indoor unit body, and the airflow direction control blade is driven by a servomotor.

A third means for solving the problems is to provide a drive means on the shaft of the brush and to control the drive means by the control means.

Further, the fourth means for solving the problems is to drive the brush by connecting the shaft of the filter and the shaft of the brush with a belt.

[0010]

In the above construction, the first function is that the arithmetic processing means calculates the continuous use time of the filter, and the control means determines whether it is time to clean the filter and controls the drive of the servomotor and the fan. The filter is automatically cleaned, dust on the filter is removed by a brush, and the dust diffused in the air is exhausted to the outside by a fan. Also, the amount of dust exhausted is monitored by the dust sensor provided in the exhaust pipe, and if the amount of dust is below a certain level by the control means based on this information, cleaning is terminated and the total amount of dust is optimized to suit the room condition Determine the continuous usable time of different filters. The second action is to drive the wind direction control blade with a servo motor. In the third action, the control means controls the drive means to drive the brush. Furthermore, the fourth
The action of driving the brush is to connect the shaft of the filter and the shaft of the brush with a belt.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the air conditioner is composed of an indoor unit body 1 and an outdoor unit (not shown), a heat exchanger 2 is arranged in the indoor unit body 1, and a front surface of the heat exchanger 2 is provided. A suction port 3 is provided at a position located in the section.
A belt-shaped filter 4 is provided between the heat exchanger 2 and the suction port 3.
And a blower 5 is installed at the rear of the heat exchanger 2. The belt-shaped filter 4 is stretched around a drive shaft 6 and a driven shaft 7. A wind direction control blade 9 is connected to a servomotor 10 at the air outlet 8 provided in the indoor unit body 1. The exhaust pipe 11 communicates with the suction port 3, the brush 12 is internally provided, and the exhaust pipe 11 communicates with the exhaust port 11a on the back surface. Inside the exhaust pipe 11, in contact with the filter 4 and the drive shaft 6
A brush 12, a dust sensor 13 connected to the belt by a belt,
The fan 14 etc. are installed. The arithmetic processing means 15 is
The continuous use time of the filter 4 is calculated, the control means 16 judges the cleaning time of the filter 4 from the information, and controls the drive of the drive shaft 6, the brush 12 and the fan 14. Further, the control means 16 determines the end of cleaning of the filter 4 and the continuous usable time of the filter 4 based on the information from the dust sensor 13.

Next, the operation will be described with reference to FIG. That is, in order to clean the filter 4, the control means 16 controls the drive of the drive shaft 6, the brush 12, the fan 14 and the like according to the information from the arithmetic processing means 15 which calculates the continuous possible time of the filter 4. When the drive shaft 6 rotates, dust on the surface of the filter 4 is removed by rotating the brush 12, and the dust diffused in the air is exhausted to the outside by rotating the fan 14. Also, while cleaning the filter 4, the dust sensor 13 monitors the amount of dust in the exhaust gas, and when the amount of dust falls below a certain level, cleaning is performed from the total amount of dust to the optimum filter 4 suitable for the room condition. The control means 16 determines the continuous usable time of.

According to the above embodiment, the servo motor 10 for driving the drive shaft 6 is driven by the wind direction control blade 9 provided in the indoor unit body of the conventional air conditioner to reduce the cost. You can Filter 4 again
The shaft of the brush 12 and the shaft of the brush 12 are connected by a belt, and the brush 12
By driving, the low-cost driving means can be realized, and the air flowing in from the suction port 3 passes through the surface of the filter 4 twice, so that the air cleaning effect can be enhanced.

The same effect can be obtained by connecting the brush 12 to the servomotor 10 as a driving means. In this case, the dust removal effect can be improved by controlling the rotation speed of the servo motor 10 according to the amount of dust.

[0015]

As is apparent from the above-mentioned embodiment, the present invention is such that the control means determines the predetermined continuous usable time of the filter from the information of the dust sensor and the arithmetic processing means. With this configuration, it is possible to automatically clean the filter by determining when to clean the filter according to the air quality of the room, and dust does not accumulate on the filter above a certain level. Therefore, it is possible to maintain the air conditioning capacity without deteriorating the air cleaning capacity, and since the filter always has sufficient air cleaning capacity, the wind speed cannot be raised more than necessary to obtain the required air volume. Energy saving is possible.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an air conditioner according to an embodiment of the present invention.

FIG. 2 is an electrical block diagram of the air conditioner.

FIG. 3 is a sectional view of a conventional air conditioner.

[Explanation of symbols]

 1 Indoor Unit Main Body 2 Heat Exchanger 3 Suction Port 4 Filter 6 Drive Shaft 7 Driven Shaft 10 Servo Motor 11 Exhaust Pipe 11a Discharge Port 12 Brush 13 Dust Sensor 14 Fan 15 Computational Processing Means 16 Control Means

Claims (4)

[Claims] 1. A belt-shaped filter provided between a heat exchanger arranged in an indoor unit main body and a suction port, a drive shaft and a driven shaft stretched with the filter, and connected to the drive shaft. Servo motor, a brush for removing dust from the filter, an exhaust pipe having a brush communicating with the suction port and having a discharge port, a dust sensor installed in the exhaust pipe, and the exhaust pipe. A dust discharge fan provided, arithmetic processing means for calculating the continuous use time of the filter, and control means for controlling the servomotor and fan are provided, and the control means is information on the dust sensor and arithmetic processing means. An air conditioner adapted to determine a predetermined continuous usable time of the filter from. 2. The air conditioner according to claim 1, wherein a wind direction control blade is provided at the outlet of the indoor unit body, and the wind direction control blade is driven by a servomotor. 3. The air conditioner according to claim 1, wherein a drive means is provided on the shaft of the brush, and the drive means is controlled by the control means. 4. The air conditioner according to claim 1, wherein the filter shaft and the brush shaft are connected by a belt to drive the brush.