KR20000023455A - Air conditioner - Google Patents

Abstract

PURPOSE: An air conditioner is provided to arrange a gas sensor to the optimum position to detect the pollution level of indoor air and to improve the precision of detection. CONSTITUTION: An air conditioner is composed of; a remote controller(19); an infrared light receiving unit(20) installed in an indoor unit to receive transmitting signals from the remote controller; a main control unit(14) for receiving command signals from the remote controller through the infrared ray receiving unit; a gas sensor(24) provided on a second control plate(22) to detect the pollution level of air such as density of dust and the like included in air; and the gas sensor connected to the main control unit of a first control plate(21) to transmit detected signals to the main control unit. Therefore, the gas sensor is arranged on the very useful sensing position to detect the pollution level of the indoor air and to transmit the detected signals to the main control device provided on the first control plate.

Description

Air Conditioner {AIR CONDITIONER}

The present invention relates to an air conditioner comprising an indoor unit and an outdoor unit, in which a heat exchanger and a blower are disposed in the indoor unit, and an electrostatic precipitator is mounted, and more particularly, to an improvement of a control device in an indoor unit.

Air conditioners composed of outdoor units and indoor units are widely used. The indoor unit is arranged in a state in which the heat exchanger and the blower are opposed to each other, and the indoor air is led to the heat exchanger by the operation of the blower, whereby the heat exchanger is ejected to the room again.

The indoor unit is provided with a control device comprising a main control board on which a microcomputer unit for controlling the air conditioning operation is mounted, and an auxiliary control board including display elements such as LEDs for indicating the air operation state.

A plurality of wirings are provided between the main control board and the auxiliary control board for connection to the display LED and a receiving unit for receiving a transmission signal from a switch of an attached remote controller.

When sensors are arranged between a large number of wirings, wiring interconnects become more complicated and adversely affect the detection accuracy of the sensor itself, so the sensors are mounted directly on the main board.

By the way, such an air conditioner has been provided with an electrostatic precipitator in recent years, and not only indoor air conditioning but also deodorization of indoor air and debris such as floating dust is removed.

In the air conditioner equipped with the electrostatic precipitator, a gas sensor for detecting the amount of dust in the room and the gas concentration is provided on the main controller board together with other sensors, and is electrically connected to the microcomputer unit.

However, the main control board is usually arranged at the side end of the air conditioner main body, and this side end is a place where the heat exchanged air is hardest to pass through. For this reason, the gas sensor provided in the main controller board is delivered only a small amount of indoor air to the heat exchanger, so that the detection accuracy is lowered.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to install a gas precipitator on an indoor unit, and arrange a gas sensor that detects the degree of contamination of indoor air at an optimal position, thereby improving the detection accuracy. It is to provide a smart air conditioner.

1 is an external perspective view of an indoor unit constituting an air conditioner according to a first embodiment of the present invention;

2 is a sectional view of an indoor unit according to the embodiment;

3 is a view showing an outline of a refrigeration cycle circuit and an electric wiring of an air conditioner according to the above embodiment;

4 is a diagram showing the configuration of a second control board according to a second embodiment;

5 is a view showing the configuration of a second control board according to a third embodiment;

6 is a view showing the configuration of a second control board according to a fourth embodiment;

7 is a diagram illustrating a configuration of a second control board according to the fifth embodiment.

* Explanation of symbols for main parts of the drawings

8: indoor unit 3: indoor side heat exchanger

9: indoor blower 14: main controller

21: first control panel 24: gas sensor

22: second control panel 20a: display element

30: Forced operation switch 19: Remote controller

20A: Receiver 35: Microcomputer

40: monitoring means

The air conditioner of claim 1 of the present invention for satisfying the above object comprises an indoor unit and an outdoor unit, wherein the heat exchanger and the blower are disposed in the indoor unit, and the air conditioner in which the electrostatic precipitator is mounted. A first control plate having a main control device for driving control and outputting a signal to the outdoor unit, and a gas sensor which is disposed on the front side of the indoor unit separately from the first control plate and detects the degree of contamination of the indoor air. It is characterized by including a second control plate provided.

In the air conditioner of Claim 2, the said 2nd control board is arrange | positioned in the front side center part of the said indoor unit in the air conditioner of Claim 1. It is characterized by the above-mentioned.

The air conditioner of claim 3 is characterized in that, in the air conditioner according to claim 1, the second control board includes a display element for displaying an air conditioner operation state.

The air conditioner of claim 4 is characterized in that, in the air conditioner according to claim 1, the second control board is provided with a switch for forced operation for switching to forced operation for operating in a fixed operation mode in advance.

The air conditioner of claim 5 is characterized in that, in the air conditioner according to claim 1, the second control board includes a receiver that receives a transmission signal from a remote controller for remotely operating an air conditioning operation.

The air conditioner of claim 6, wherein in the air conditioner according to claim 1, the second control board includes a microcomputer that detects an output value of the gas sensor and transmits a detection signal to the main controller of the first control board. It is characterized by one.

The air conditioner according to claim 7 is a microcomputer provided on the second control board in the air conditioner according to claim 6 from a remote controller for remotely controlling the display state of the display element displaying the air conditioning operation state and the air conditioning operation. And means for monitoring a reception state of a receiver for receiving a transmission signal of the transmitter, and transmitting the monitoring result to the main controller.

By adopting a means for solving such a problem, the position of the gas sensor which detects the pollution degree of indoor air can be set to an optimal position, and the accurate state of contamination of indoor air can be detected correctly.

EMBODIMENT OF THE INVENTION Hereinafter, one Embodiment of this invention is described with reference to drawings.

FIG. 3 shows a heat pump type refrigeration cycle circuit provided in an air conditioner composed of an outdoor unit (not shown) and an indoor unit 8 described later.

In the figure, 1 is a compressor, 2 is a 4-way selector valve, 3 is an indoor side heat exchanger, 4 is an automatic electromagnetic expansion valve, 5 is an outdoor side heat exchanger, and these are connected via the refrigerant pipe P in the above order. .

An inverter device 6 is connected to the compressor 1, and an outdoor blower 7 is disposed to face the outdoor heat exchanger 5. The compressor 1, the four-way switching valve 2, the automatic electromagnetic expansion valve 4, the outdoor side heat exchanger 5 and the outdoor blower 7 are disposed in the outdoor unit.

The indoor heat exchanger 3 is fitted to the indoor unit 8 shown in FIGS. 1 and 2. 3, the indoor blower 9 which consists of a crossflow fan F and a fan motor FM is arrange | positioned facing the said indoor side heat exchanger 3, as shown in FIG.

The indoor unit 8 and the outdoor unit are connected via a refrigerant pipe P and wirings, and are configured to perform functions of air conditioning operation such as cooling operation, heating operation, or dehumidification operation.

In addition, the air purifier 10 is built in the indoor unit 8. The air purifier 10 is composed of an electrostatic precipitator 11 and a deodorizing filter 12 that is installed next to the electrostatic precipitator 11. Here, the electrostatic precipitator 11 and the deodorization filter 12 are respectively independent and arranged side by side in the upper part of the front surface of the indoor side heat exchanger 3, respectively.

Therefore, in the indoor unit 8, the indoor air is deodorized by driving the air cleaner 10, and the fine floating dust in the air is charged and collected by the electrode of the electrostatic precipitator 11, Thereby, an air cleaning function can also be exhibited.

The first control plate 21 is disposed at the front side side end of the indoor unit 8, and the second control plate 22 is disposed at the center side of the front side of the indoor unit 8. That is, the first control board 21 is housed in an electrical component case not shown here, which is provided at the side end of the indoor unit 8.

The second control board 22 is disposed at the center of the suction port 23 provided in the front grill 8a constituting the indoor unit 8, and is separated from the first control board 21.

The first control panel 21 includes a main controller 14 made of a microcomputer unit, which is used for controlling the fan motor (FM) of the inverter device 6 and the outdoor blower 7. In the outdoor fan control circuit 15, the outdoor air sensor 16 provided in the outdoor unit, the indoor fan control circuit 17 and the indoor unit 8 for controlling the fan motor (FM) of the indoor blower 9. Connected to the high voltage generation circuit 13 for operating the room temperature sensor 18 and the electrostatic precipitator 10, respectively.

This air conditioner is also provided with a wireless remote controller (remote control unit) 19. The indoor unit 8 is provided with an infrared light receiving unit 20 which is a receiving unit for receiving the transmission signal from the remote controller 19. In addition, the main control unit 14 is configured to transmit an instruction signal from the remote controller 19 through the infrared light receiving unit 20.

As described above, the second control plate 22 is disposed in the intake port 8a for introducing the indoor air to the heat exchanger 3 in the indoor unit 8, and the indoor air sucked from the intake port 8a. A part is made to reliably collide with the 2nd control board 22 in the position just before delivery to the heat exchanger 3. As shown in FIG.

The second control board 22 is provided with a gas sensor 24 for detecting the degree of contamination of the air, such as the concentration of dust contained in the air. The gas sensor 24 is connected to the main controller 14 of the first control plate 21 and transmits a detection signal to the main controller 14.

That is, the second control plate 22 is disposed on the front side of the indoor unit 8, and the gas sensor 24 is disposed in the flow of indoor air at the point where the gas sensor 24 is installed.

In addition, an air outlet 25 is provided in the lower part of the front surface of the indoor unit 8 for ejecting and guiding the indoor air after the heat exchange in the heat exchanger 3 back to the interior.

However, with the air conditioning operation, the indoor blower 9 operates, the indoor air is sucked into the indoor unit 8, and a part of it impinges on the second control board 22 and then to the indoor heat exchanger 3. Delivered, and the remaining room air is directly delivered to the heat exchanger (3) for heat exchange. The indoor air after the heat exchange in the indoor heat exchanger (3) is blown back to the interior from the jet port (25).

The gas sensor 24 provided in the second control board 22 is in the flow of indoor air, where a sufficient amount of indoor air is certainly delivered. Therefore, the gas sensor 24 is disposed at a very effective sensing position, detects the degree of contamination of the indoor air with high accuracy, and transmits the detection signal to the main controller 14 provided in the first control board 21.

The main controller 14 converts the transmitted signal into a pollution degree value, and when it is determined that the value exceeds the set value of the pollution degree of the indoor air stored in the main controller 14 in advance, the air cleaner 10 immediately returns to the air cleaner 10. The drive signal is transmitted to operate the electrostatic precipitator 11.

The electrostatic precipitator 11 is cleaned by charging and removing floating dust included in the indoor air. The gas sensor 24 continuously detects the degree of contamination of the indoor air with high accuracy, and transmits the detection signal to the main controller 14.

When the air purifying operation continues and determines that the degree of contamination of the indoor air is lower than the predetermined value stored in the main controller 14 in advance, the control of the electrostatic precipitator 11 is stopped.

In this way, the main controller 14 includes the second control plate 21 having the gas sensor 24 for detecting the degree of contamination of the indoor air, on the premise that the electrostatic precipitator 11 is mounted on the indoor unit 8. Since it separates from the 1st control board 21 with which it was equipped, and arrange | positioned in the front side of the indoor unit 8, sufficient amount of indoor air is led to the gas sensor 24, and this detection accuracy is improved. .

Moreover, in the said 1st Embodiment, the gas sensor 24 was provided in the 2nd control board 22, In addition, you may be in embodiment described below. In addition, the thing in which the 1st control board 21 is equipped with the main controller 14 does not change at all.

As a 2nd embodiment, as shown in FIG. 4, you may equip the 2nd control board 22 with the gas sensor 24, and the some display element 20a. Such a display element 20a displays each air conditioning operation state of cooling, heating, dehumidification, and blowing, and also displays an air cleaning operation, and each is made of LED.

In the front panel 8a of the indoor unit 8, at least a portion of the front panel 8a facing the display element 20a is opened to expose the display element to the room, or at least a portion of the transparent panel is drilled in the portion facing the display element. The display element 20a can be visually seen from the inside.

Therefore, the space for attaching each display element 20a separately in the indoor unit 8 becomes unnecessary, and the effective use of the space in the indoor unit 8 can be achieved.

As a 3rd embodiment, as shown in FIG. 5, you may arrange | position the forced driving switch 30 with the gas sensor 24 in the 2nd control board 22. As shown in FIG. This forced driving switch 30 is for switching to forced driving to operate in a fixed driving mode in advance.

Therefore, the space for attaching the forced driving switch 30 separately in the indoor unit 8 becomes unnecessary, and the effective use of the space in the indoor unit 8 can be achieved.

As a fourth embodiment, as shown in FIG. 6, a transmission signal (infrared ray) from the remote controller 19 for remotely operating the air conditioning operation together with the gas sensor 24 on the second control board 22 is received. The receiver 20A may be provided.

First, as described with reference to FIG. 1, the infrared light transmitted from the remote controller 19 is received by the infrared light receiving unit 20 provided in the front panel 8a. However, the receiver 20A is not limited to this. As a result, the space can be effectively used in the indoor unit 8 by being provided on the second control board 22.

As a fifth embodiment, as shown in FIG. 7, a microcomputer that detects an output value of the gas sensor 24 together with the gas sensor 24 on the second control board 22 and transmits a detection signal to the main controller 14. (CPU) 35 may be provided.

Then, the microcomputer 35 provided in the second control board 22 transmits the display state of the display element 20a displaying the air conditioning operation state and the remote controller 19 remotely controlling the air conditioning operation. Means 40 are provided for monitoring the reception state of the receiving unit 20A for receiving a signal, and the monitoring means 40 transmits the monitoring results to the main controller 14.

In this manner, the second control board 22 is provided with not only the gas sensor 24 but also the microcomputer 35 for transmitting the detection signal to the main controller 14, the display element 20a, the receiver 20A, and the like. In addition, a space for attaching such a thing separately to the indoor unit 8 is not necessary, thereby making effective use of the space of the indoor unit 8.

As described above, according to the present invention, a gas sensor for detecting the degree of contamination of indoor air is disposed at the optimum position, and the detection accuracy can be improved.

Claims (7)

In the air conditioner comprising an indoor unit and an outdoor unit, the heat exchanger and the blower is disposed in the indoor unit, and the electrostatic precipitator is mounted, A first control plate having a main controller which drives and controls the blower of the indoor unit and outputs a signal to the outdoor unit; And a second control plate which is separated from the first control plate and disposed on the front side of the indoor unit and has a gas sensor for detecting the degree of contamination of the indoor air. The method of claim 1, And the second control board is disposed at the front side central portion of the indoor unit. The method of claim 1, And the second control panel includes a display element for displaying an air conditioning operation state. The method of claim 1, And the second control board includes a switch for forced operation for switching to forced operation for driving in a fixed operation mode in advance. The method of claim 1, And the second control board includes a receiving unit for receiving a transmission signal from a remote controller for remotely operating an air conditioning operation. The method of claim 1, And the second control board includes a microcomputer which detects an output value of the gas sensor and transmits a detection signal to the main controller of the first control board. The method of claim 6, The microcomputer provided in the second control board includes means for monitoring a display state of a display element indicating an air conditioning operation state and a reception state of a receiver for receiving a transmission signal from a remote controller for remotely operating the air conditioning operation. And transmitting the monitoring result to the main controller.