JPH01131844A - Air conditioner - Google Patents

Abstract

PURPOSE:To make it possible to perform economical operation by providing detection means for detecting presence or absence of a person in the room where air-conditioning is to be carried out, and controlling the operational condition of a compressor in accordance with the presence or absence of a person to be detected. CONSTITUTION:An output signal from a human body sensor 2 is read in a main control part 1. While the existence of a human body in the room is confirmed, the read-in operation of output signals from a room detection circuit 3 and a human body sensor 2 to a main control part 1 is continued, and the operation control of an outdoor compressor 4 due to the main control 1 is continuously carried out. Further, when the user has left the room, the human body sensor 2 confirms that the user has left the room. When it has been detected that the room temperature does not reach a set temperature t deg.C, the outdoor compressor 4 is subjected to a normal operation control by the main control part 1. On the other hand, in a case where the room temperature T deg.C is judged to have reached a set temperature t deg.C, the outdoor compressor 4 is subjected to a normal operation control by the main control part 1. On the other hand, in a case where the room temperature T deg.C is judged to have reached a set temperature t deg.C, the outdoor compressor 4 is controlled in its operation so that the consumed energy is reduced by the main control part 1.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an air conditioner for controlling the temperature and humidity of indoor air. This invention relates to an air conditioner that can be operated.

[Prior art]

In conventional air conditioners, when the indoor temperature reaches a temperature preset by the user, the operation of the outdoor compressor for compressing refrigerant is controlled to be reduced to the lowest level or stopped. Ru.

(Problem to be Solved by the Invention) However, in the conventional air conditioner described above, operation control is performed to perform air conditioning based on the set temperature at that time even when the user leaves the room. Therefore, a problem arises in that rooms where no users are present must be cooled or heated, resulting in extremely uneconomical operation.

Therefore, an object of the present invention is to provide an air a! that can be operated economically depending on the presence or absence of people in the room. Our aim is to provide Japanese machines.

[Means for solving problems]

In order to achieve the above object, the main means adopted by the present invention is to provide a detection means for detecting the presence or absence of a person in a room where air conditioning is performed, and to detect the presence or absence of a person in a room where air conditioning is performed. This is an air conditioner in which the operating state of the compressor is controlled depending on the presence or absence of a person.

[Effect]

When the presence of a person is confirmed by the detection means, the compressor is controlled to perform air conditioning in the room.

On the other hand, if the detection means does not confirm the presence of a person in the room, the operating capacity of the pressurized LiI machine may be lowered to the lowest level, stopped, intermittent operation combining these, or controlled in various other ways. Ru.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples embodying the present invention will be described below with reference to the accompanying drawings to provide an understanding of the present invention. It should be noted that the following examples are examples embodying the present invention, and are not intended to limit the technical scope of the present invention.

Here, FIG. 1 is a block diagram showing the configuration of an air conditioner according to an embodiment of the present invention, FIG. 2 is a configuration diagram of a detection means that can be used in the air conditioner, and FIG. It is a flowchart which shows the control procedure when operating a harmonizer.

As shown in FIG. 1, the air conditioner according to this embodiment is provided with a human body sensor 2 (detection means) for detecting the presence or absence of a person in the room where air conditioning is performed. The main control unit 1
It is configured to control the operating state of the outdoor compression unit 11314.

That is, the human body sensor 2 detects the presence or absence of a person by detecting infrared rays emitted from the human body, and includes a sensor section 6 and a drive section 7.

The sensor section 6 inputs infrared rays emitted from the human body to an infrared sensor 9 through a lens 8, and converts the infrared rays into an electrical signal.

The electrical signal from the sensor section 6 is input to the main control section 1.

The lens 8 covers a wide range of people in the room, limits the direction of the emitted infrared rays, gives directionality to the infrared sensor 9, and at the same time allows the infrared rays to be efficiently input to the infrared sensor 9. It is something.

The drive section 7 has a drive motor (not shown) inside thereof, and by rotating and scanning the sensor section 6 with this drive motor, the sensor section 6 can be moved no matter where there is a person in the room. 6, the person can be detected.

The main control unit 1 includes a microcomputer, memory, power supply, etc., and compares the electrical signal from the human body sensor 2 with the electrical signal from the room temperature detection circuit 3 for detecting the indoor temperature. , and is used to control the operating state of the outdoor compressor 4 based on the calculation results.

Regarding specific control of the operating state of the outdoor compressor 4 at this time, in an inverter type air conditioner, a variable capacity bag W5 is provided between the main control unit 1 and the outdoor compressor #B4. Therefore, a command signal is transmitted from the main control unit l to the capacity variable device 5, and based on this command signal, the outdoor compressor 4 is operated at the lowest capacity (operating frequency is, for example, 30Hz or 4011z) or stopped. By doing so, the driving ability is reduced.

On the other hand, in an air conditioner other than an inverter type that does not have the capacity variable device 5, by stopping the operation of the outdoor compressor 4 based on a command signal from the main control section 1,
The driving ability will be reduced.

The air conditioner according to the present invention is configured as described above.

Next, a control procedure of the air conditioner during cooling operation, for example, will be explained based on FIG. 3.

In addition, in the figure, SL, 32, 33. ... represents each control step.

First, when the user operates the start button of the air conditioner and sets a desired indoor temperature (for example, t'c) (Sl), this set temperature is read into the main control unit 1. Subsequently, in S2, the room temperature detection circuit 3 detects the room temperature (
For example, T° C.) is read into the main controller 1, and the main controller 1 controls the operation of the outdoor compressor 4.

In S3, the output signal from the human body sensor 2 is sent to the main control unit l.
and while the presence of a person in the room is recognized in S4, the room temperature detection circuit 3 is read in S2 and S3.
The operation of reading the output signal from the human body sensor 2 into the main control unit 1 continues, and the operation control of the outdoor compressor 4 by the main control unit 1 is continuously performed.

Further, in S4 above, when the user leaves the room, the human body sensor 2 becomes unable to detect a person because the infrared rays emitted from the human body fall below the α value, and it is determined that there is no person in the room. is confirmed. Here, the α value refers to the lowest value of infrared rays emitted by the human body that can be detected by the human body sensor 2.

Then, in S5, if it is determined that the room temperature has not reached the set temperature t°C (t<T), the main control unit 1 performs normal operation control of the outdoor compressor 4 (36).
.

On the other hand, if it is determined in S5 that the room temperature T°C has reached the set temperature t°C (t=T), the outdoor compressor 4
is controlled by the main control unit 1 to reduce energy consumption (S7).

That is, in an inverter type air conditioner, the main control unit 1
By transmitting a command signal from to the capacity variable device 5,
The outdoor compressor 4 has the lowest capacity (for example, the operating frequency is 30
11z or 40Hz).

On the other hand, in air conditioners other than the inverter type, the main control section 1 stops the operation of the outdoor compressor 4.

When the human body sensor 2 detects that a person has entered the room, the outdoor compressor 4 is again subjected to normal operation control by the main control section 1.

Therefore, in the air conditioner according to the present invention, the operation of the outdoor compressor 4 is controlled depending on whether or not there are people in the room whose air should be conditioned, so that energy can be consumed efficiently.

〔Effect of the invention〕

As described above, the present invention provides a detection means for detecting the presence or absence of a person in a room where air conditioning is performed, and controls the operating state of the compressor according to the presence or absence of a person detected by the detection means. Since the air conditioner is characterized by the following features, it can be operated extremely economically.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an air conditioner according to an embodiment of the present invention, FIG. 2 is a configuration diagram of a detection means that can be used in the air conditioner, and FIG. 3 is a block diagram showing the configuration of the air conditioner. It is a flowchart which shows the control procedure when driving. [Explanation of symbols] 1... Main control unit 2... Human body sensor (detection means) 4... Outdoor compressor.

Claims (1)

[Claims] 1. A detection means for detecting the presence or absence of a person in the room where air conditioning is performed is provided, and the operating state of the compressor is controlled according to the presence or absence of a person detected by the detection means. air conditioner.