JPH02187555A - Airconditioning apparatus - Google Patents

Abstract

PURPOSE:To make comfortable the temperature around a signal transmission means by allowing a control means to compute a rotary speed of a blower based on an indoor temperature detected from an indoor temperature sensor and distance information obtained from a distance recognition means. CONSTITUTION:When an airconditoning apparatus starts its operation, an indoor temperature is detected by an indoor temperature sensor 6 of a remote control unit 5. At the same time, a suction temperature, which is the temperature of air prior to the heat exchange of the airconditioning apparatus body 1, is detected by a suction air temperature sensor 7. As the input air approaches a preset temperature, an inverter frequency Ai is reduced and a cooling capacity is lowered. At the same time, a rotary speed Af of a blower 3 per unit time is also lowered. Then, a distance sensor 4 equipped in the airconditioning apparatus body 1 computes the distance between the airconditioning apparatus body 1 and the remote control unit 5. When the distance is detected, a rotary speed Bf the flower 3 per unit time, which is the minimum requirement of a diffused air so as to reach the remote control unit 5, is computed based on the data base of a control means 12.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air conditioner that performs cooling, heating, or both.

[Conventional technology]

In conventional air conditioners, the indoor temperature is detected by a temperature sensor installed in the air conditioner body, or by a remote control unit (hereinafter referred to as "remote control unit") connected to the air conditioner via a signal line. This is accomplished by a temperature sensor located in the remote control unit. The indoor temperature detected by the above temperature sensor is
The temperature is compared with a preset temperature. Based on this result, in the case of an air conditioner that does not have the ability to vary the temperature of the blown air, that is, an air conditioner that is not of a variable capacity type, the blower and the air conditioning cycle are operated or stopped. Furthermore, in the case of a variable capacity air conditioner, the temperature of the blown air is adjusted, and the rotational speed of the blower, that is, the air volume, is further controlled in accordance with this temperature.

However, in the air conditioner described above, since the temperature sensor is fixed at a fixed location, the temperature measurement position is often different from the location where a person is present. For this reason, the preset temperature is not necessarily a comfortable temperature at the location where the person is present, and a sufficiently comfortable environment is not created at the location where the person is present.

Therefore, recently, remote control units that use infrared rays or the like instead of signal lines are equipped with temperature sensors that detect indoor temperature. Thereby, by moving the remote control unit to a predetermined position in the room, the temperature at that position can be detected. Therefore, by comparing the detected indoor temperature and the set temperature and controlling the air conditioner, the indoor temperature is regulated to provide a comfortable environment. By the way, there are two ways to adjust the indoor temperature: one is to use the detected temperature as the average indoor temperature to create a more uniform environment throughout the room, and the other is to focus on the position of the remote control unit or a specific position to create a comfortable environment. There is a way to do this. All of these methods control the temperature to reduce the difference between the indoor temperature obtained by a temperature sensor and the set temperature, but the latter is more commonly used due to its energy saving and simplicity. There is.

[Problem to be solved by the invention]

However, even in the above-mentioned conventional air conditioner in which the remote control unit is provided with a temperature sensor, there is a problem in that it is difficult to create a sufficiently comfortable environment around the remote control unit, that is, where people are located.

That is, for example, when heating a room, at the beginning of operation, the maximum output of warm air is sent in the direction of a remote control unit having a temperature sensor or in a specific direction.

As shown in FIG. 8, this warm air reaches the remote control unit 20 located relatively far away. The warm air that has arrived is controlled by the temperature sensor 21 provided in the remote control unit
It is detected as the temperature of the room 23. Air conditioner main body 2
2 compares the detected temperature and the set temperature. Then, when the detected temperature approaches the set temperature, the rotation speed of the blower is reduced. However, the warm air whose volume has decreased,
Due to the buoyancy, the hot air rises to the upper part of the room 23 as an upward air current, and as shown in FIG. 9, the hot air no longer reaches the remote control unit 20. Therefore, this position is affected by unwarmed air other than the vicinity of the remote control unit 20, resulting in a large difference in temperature. Further, if the air conditioner main body 22 is of a variable capacity type, in addition to the reduction in air volume, capacity control is activated and the heating capacity is reduced. As a result, even if warm air reaches the location of the remote control unit 20, people will feel annoyed by the cold air.

On the other hand, when cooling the room 23, the influence of upward airflow due to buoyancy is less than when heating the room. Therefore, although the cold air reaches a relatively long distance, the situation is almost the same as when heating.
Comfort is not improved, and energy loss is large.

[Means to solve the problem]

In order to solve the above-mentioned problems, an air conditioner according to the present invention includes an air conditioner body that heats or cools air using a heat exchanger, and an air conditioner body that is provided with the air conditioner body to direct the air after heat exchange to the room. A blower for pressure-feeding, a signal transmission means that has an indoor temperature sensor and is provided at an arbitrary position in the room and transmits a detection signal from the indoor temperature sensor to the control means, and a link between the air conditioner main body and the signal transmission means. and the distance information obtained from the distance recognition means and the indoor temperature detected by the above-mentioned indoor temperature sensor, the air corresponding to the indoor temperature and forcedly blown by the blower is made to reach the signal transmission means. The present invention is characterized by comprising a control means for calculating the rotational speed of the blower for the air blower and controlling the blower so as to have the calculated rotational speed.

[For production]

According to the above configuration, the air taken into the air conditioner main body is heated or cooled by the heat exchanger. This air is then forced into the room by a blower. here,
At the beginning of operation, the air forced by the blower is
It is blown out in the direction of the signal transmission means, for example as hot or cold air at maximum output. The hot air or cold air that has reached the signal transmission means is detected as the indoor temperature by the indoor temperature sensor of the signal transmission means. Then, when this temperature approaches a preset temperature, the rotation speed of the blower is reduced.

At this time, the control means determines, based on the indoor temperature detected by the indoor temperature sensor and the distance information obtained from the distance recognition means, a control means that corresponds to the indoor temperature and that allows the air pumped by the blower to reach the signal transmission means. The rotational speed of the blower is calculated, and the blower is controlled to take the calculated rotational speed.

Therefore, as described above, even if the rotational speed of the blower is reduced, the hot air or cold air reliably reaches the signal transmission means, making it possible to maintain a comfortable temperature in the vicinity.

[Embodiment 1] An embodiment of the present invention will be described below based on FIGS. 1 to 4.

The air conditioner in this example is a variable capacity type,
As shown in FIG. 1, there is an air conditioner main body 1 that sends out heated or cooled air, and a remote control unit (hereinafter referred to as a remote control unit) 5 that is a signal transmission means for remotely controlling the air conditioner main body 1. - It is made up of. The air conditioner main body 1 is equipped with a heat exchanger 2 that heats or cools air. An intake air temperature sensor 7 is provided above the air intake side of the heat exchanger 2 to detect the temperature of the air before heat exchange. On the other hand, below the air exhaust side of the heat exchanger 2, a blow-out air temperature sensor 8, which is a temperature sensor for detecting the temperature of the air heat-exchanged by the heat exchanger 2, is provided. A blower 3 is provided below the blown air temperature sensor 8 to forcefully feed the air that has been heat exchanged by the heat exchanger 2. Behind the blower 3, the blower 3
A rear guider 9 is provided so that the compressed air moves forward, and the lower part of the rear guider 9 is formed in an arc shape. Further, a front panel IO is provided in front of the blower 3, and an opening 11 for blowing air is formed between the front panel IO and the rear guider 9. Furthermore, a distance sensor 4 is provided inside the front panel IO as a distance recognition means for detecting the distance between the remote control unit 5 and the air conditioner main body 1. On the other hand, the remote control unit 5 includes an indoor temperature sensor 6, and the indoor temperature around the remote control unit 5 is detected by this indoor temperature sensor 6.

The above heat exchanger 2, blower 3, intake air temperature sensor 7
, the blown air temperature sensor 8 and the distance sensor 4 are
As shown in the figure, the remote control unit 5 is connected to the control means 12, and the indoor temperature detected by the indoor temperature sensor 6 is transmitted to the control means 12 as a detection signal. As shown in the graph of FIG. 3, the control means 12 stores the relationship between the number of rotations per unit time of the blower 3 and the distance traveled by the blown air as a database. The blower 3 and the heat exchanger 2 are controlled by the control means 12 based on the temperatures detected by the temperature sensors 6, 7, and 8 and the database.

In the above configuration, the operation of the present air conditioner will be explained based on the flowchart of FIG. 4.

When the air conditioner starts operating, the indoor temperature is detected by the indoor temperature sensor 6 of the remote control unit 5.

At the same time, the suction temperature, which is the temperature of the air before heat exchange in the air conditioner main body 1, is detected by the suction air temperature sensor 7 (Sl). The detected indoor temperature is input to the control means 12, and the rotation speed A per unit time of the blower 3 is
f and the inverter frequency At are calculated (S2).

As a result, when the indoor temperature is sufficiently far from the set temperature, the inverter frequency At is maximized, and the heating and cooling capacity of the heat exchanger 2 is maximized.

Furthermore, the rotation speed Af of the blower 3 per unit time is also maximized. As described above, the air heat-exchanged by the heat exchanger 2 is pumped by the blower 3 and moves along the rear guider 9 formed in an arc shape. The moved air is blown out from the opening 11 and reaches the remote control unit 5. The temperature of the air that has reached is detected by the indoor temperature sensor 6 of the remote control unit 5, and the temperature of the air is detected by the control means 1 as the indoor temperature.
2 is input. Then, as the input temperature approaches the set temperature, the inverter frequency Ai is lowered, and the heating and cooling capacity is lowered. At the same time, the rotation speed Af of the blower 3 per unit time is also reduced.

Next, the distance sensor 4 provided in the air conditioner main body 1 detects the distance between the air conditioner main body 1 and the remote control unit 5 (S3). Once the distance is detected, the control means 12
Based on the database, the minimum number of revolutions Bf of the blower 3 per unit time required for the Suita air to reach the remote control unit 5 is calculated (S4). This rotation speed Bf is compared with the rotation speed Af set based on the indoor temperature (S5), and if the rotation speed Af is larger than the rotation speed Bf, the blower 3 is set at the rotation speed Af set based on the indoor temperature.
(S6). On the other hand, the rotation speed Af is the rotation speed B
f is smaller than f, the blown air does not reach the remote control unit 5. Therefore, the blower 3 changes the rotation speed from the rotation speed Af to the rotation speed B so that the blown air reaches the remote control unit 5.
f and is operated (S7).

Next, the temperature of the blown air is detected by the blown air temperature sensor 8 (3B). At this time, if the temperature of the blown air is higher than the set temperature, for example during heating, the current inverter frequency Ai is maintained. The air conditioner is operated. On the other hand, if the temperature of Suita air is lower than the set temperature during heating, a correction value ΔBi of the inverter frequency is calculated from the difference between the temperature of the blown air and the set temperature (S9
), this correction value ΔBi is the current inverter frequency A
i is added and the air conditioner is operated (310)
. In addition, the inverter frequency depends on the indoor temperature and set temperature.
It is also possible to give Ci as the relationship between the temperature of the blown air and the set temperature. As described above, since the number of rotations per unit time and the heating and cooling capacity of the blower 3 are controlled, it is possible to maintain the position of the remote control unit 5 in a comfortable environment.

[Embodiment 2] Another embodiment of the present invention will be described below with reference to FIGS. 5 to 7. For convenience of explanation, means having the same functions as the means shown in the first embodiment are denoted by the same reference numerals, and the explanation thereof will be omitted.

The air conditioner in this example is a variable capacity type,
As shown in FIG. 5, it is comprised of an air conditioner main body 13 that sends out heated or cooled air, and a remote control unit 5 that is a signal transmission means for remotely controlling the air conditioner main body 13.

The remote control unit 5 is equipped with an indoor temperature sensor 6.

The air conditioner main body 13 has an opening 11 at the bottom, as in the first embodiment, and includes a heat exchanger 2, a blower 3, an intake air temperature sensor 7, and a blowout air temperature sensor 8 inside. There is. The heat exchanger 2, blower 3, intake air temperature sensor 7, and outlet air temperature sensor 8 are as follows:
As shown in FIG. 6, it is connected to the control means 14, and the indoor temperature detected by the indoor temperature sensor 6 is transmitted to the control means 14. The control means 14 assumes that the difference in temperature detected by the indoor temperature sensor 6 and the intake air temperature sensor 7 is proportional to the distance between the remote control unit 5 and the air conditioner main body 13, and controls the temperature difference as described above. The relationship between this and the number of rotations per unit time of the blower 3 is stored as a database. Therefore, the indoor temperature sensor 6,
The intake air temperature sensor 7 and the control means 14 constitute a distance recognition means.

In the above configuration, the operation of the present air conditioner will be explained based on the flowchart of FIG. 7.

When the air conditioner starts operating, the indoor temperature is detected by the remote control unit 50 and the indoor temperature sensor 6. At the same time, the suction temperature of the air conditioner main body 13 is detected by the suction air temperature sensor 7 (Sl), the detected indoor temperature is input to the control means 14, and the rotation speed Af of the blower 3 per unit time is Then, the inverter frequency Ai is calculated (S2). As a result, if the indoor temperature is far enough away from the set temperature, the inverter frequency At
is maximized, and the heating and cooling capacity of the heat exchanger 2 is maximized. At the same time, the rotation speed Af of the blower 3 per unit time is also maximized. The air heat-exchanged by the heat exchanger 2 is forced by the blower 3 and blown out from the opening 11, and reaches the remote control unit 5. The temperature of this air is detected by the indoor temperature sensor 6, and the temperature of the air is detected by the control means 1 as the indoor temperature.
4 is input. Then, as the input temperature approaches the set temperature, the inverter frequency Ai is lowered, and the heating and cooling capacity is lowered. At the same time, the rotation speed Af of the blower 3 per unit time is also reduced.

Next, the indoor temperature sensor 6 of the remote control unit 5 detects the indoor temperature. Further, the intake air temperature sensor 7 detects the intake temperature (S3). The above temperature is input to the control means 14, and based on the temperature difference obtained by the indoor temperature sensor 6 and the intake air temperature sensor 7 and the database recorded in the control means 14, the temperature of the blower 3 is determined. The number of revolutions Bf per unit time is calculated (S4). This rotation speed Bf is compared with the rotation speed Af set based on the room temperature (S5). As a result, the number of revolutions Ar becomes the number of revolutions B
If it is larger than f, the blower 3 is operated at the rotation speed Af set based on the indoor temperature (S6). On the other hand, if the rotational speed Af is smaller than the rotational speed Bf, the blown air does not reach the remote control unit 5, so the rotational speed Af is changed to the rotational speed Bf and the operation is performed (S7).

Next, when the temperature of the blown air is detected by the blown air temperature sensor 8 (S8), if the temperature of the blown air is higher than the set temperature during heating, for example, the air conditioner detects the current inverter frequency. It is operated while maintaining Ai. On the other hand, when the temperature of the blown air is lower than the set temperature during heating, the inverter frequency correction value ΔBi is calculated from the difference between the blown air temperature and the set temperature (S
9). Then, this correction value ΔBi is added to the current inverter frequency Ai, and the air conditioner is operated (SIO). In addition, the inverter frequency is determined by the relationship between indoor temperature and set temperature, and the temperature of the blown air and set temperature.
It is also possible to give it as i. As described above, since the number of rotations per unit time and the heating and cooling capacity of the blower 3 are controlled, it is possible to maintain the position of the remote control unit 5 in a comfortable environment.

〔Effect of the invention〕

As described above, the air conditioner according to the present invention includes an air conditioner main body that heats or cools air using a heat exchanger,
This air conditioner body is provided with a blower that pumps the air after heat exchange into the room, and an indoor temperature sensor, and is provided at an arbitrary position in the room, and sends a detection signal from the indoor temperature sensor to the control means. A signal transmission means, a distance recognition means between the air conditioner main body and the signal transmission means, and an indoor temperature detected by the indoor temperature sensor and distance information obtained from the distance recognition means. and a control means for calculating the rotational speed of the blower for causing the air pumped by the blower to reach the signal transmission means, and controlling the blower to take the calculated rotational speed. It is.

As a result, it is possible to maintain a comfortable environment at a specific position where a signal transmission means such as a remote control unit is located, without special modification of the structure of a conventional air conditioner.

[Brief explanation of the drawing]

1 to 4 show one embodiment of the present invention, in which FIG. 1 is a schematic configuration diagram of an air conditioner, FIG. 2 is a block diagram showing a control system of the air conditioner, and FIG. 3 is a block diagram showing a control system of the air conditioner. The figure is a graph showing the relationship between the number of rotations per unit time of the blower and the delivery air distance, Figure 4 is a flowchart showing the control operation of the air conditioner, and Figures 5 to 7 are other embodiments of the present invention. FIG. 5 is a schematic configuration diagram of the air conditioner, FIG. 6 is a block diagram showing the control system of the air conditioner, FIG. 7 is a flow chart showing the control operation of the air conditioner, and FIG. 9 and 9 show conventional examples, where FIG. 8 is an indoor temperature distribution diagram when the air conditioner is operating at high speed during heating, and FIG. 9 is an indoor temperature distribution diagram when the air conditioner is operating at low speed during heating. It is an indoor temperature distribution map. 1.21 is the air conditioner body, 2 is the heat exchanger, 3 is the blower, 4 is the distance sensor (distance recognition means), 5 is the remote control unit (signal transmission means), 6 is the indoor temperature sensor, 7 is for intake air Temperature sensor, 8 is a temperature sensor for blowing air, 11
is an opening, and 12 and 22 are control means. Romo te'lit liver-

Claims (1)

[Claims] 1. An air conditioner body that heats or cools air using a heat exchanger; a blower provided in the air conditioner body that forces the air after heat exchange into the room; and an indoor temperature sensor. and a signal transmission means that is provided at an arbitrary position in the room and transmits a detection signal from the indoor temperature sensor to the control means; a distance recognition means between the air conditioner main body and the signal transmission means; From the indoor temperature detected by the indoor temperature sensor and the distance information obtained from the distance recognition means, the rotational speed of the blower is calculated, which corresponds to the indoor temperature and is necessary for the air being pumped by the blower to reach the signal transmission means. and control means for controlling the blower so as to have the calculated rotational speed.