JP5677178B2 - Air conditioner - Google Patents

Description

The present invention uses equipped with remote radiation sensor, in which relates to an air conditioner location of the temperature sensing chamber.

  In general, an air conditioner is intended to keep the air temperature of an air-conditioned room constant at a target temperature, and the air conditioner indoor unit (hereinafter referred to as an indoor unit) detects the indoor air temperature. The air temperature sensor is used to control the temperature by comparison with the target temperature. On the other hand, in office buildings, since the space is relatively large and people are seated evenly, embedded ceiling types that can air-condition in a wide range are often used as indoor units. In the case of heating operation in the winter, warm air tends to accumulate near the ceiling due to the difference in specific gravity of the air, and the temperature detected by the built-in air temperature sensor in the air conditioner that sucks room air from the ceiling and air-conditions it Is higher than the temperature in the vicinity of people, reaches the set temperature before the room is sufficiently warmed, and stops the thermostat (the thermostat stops). The detection temperature of the built-in intake air temperature sensor is lowered by several degrees in advance. It has been replaced to make it difficult to stop the thermo.

However, due to the effects of ceiling height, heating / heating equipment, enclosure temperature, etc., there is a problem that comfort cannot be obtained at a certain replacement temperature depending on the installation environment of the indoor unit. To avoid this, a temperature sensor built in a remote controller (abbreviation of remote controller) installed separately from the indoor unit is installed on the wall according to the installation environment to detect the temperature near people. Thus, a method for detecting an accurate temperature is employed.
However, in the case of a wall-mounted temperature sensor, the wall-mounted temperature sensor is affected by the temperature of the wall surface, the air temperature from the wiring pipes and wiring holes that pass through the wall, and the heat generated by the mounted remote controller. There was a problem that could not be detected accurately.
In order to solve this problem, a method is shown in which a change in temperature detected by a temperature sensor installed on a wall surface is calculated, and a correction value is added according to the change amount (see, for example, Patent Document 1).

JP 2001-208390 A

  However, in the conventional air conditioner described above, when the influence of the wall surface temperature is kept constant, it is impossible to follow, and accurate temperature detection cannot be performed, so that the room temperature does not match the target temperature and comfort cannot be obtained. There was a problem.

The present invention has been made to solve the above problems, using the equipped with remote radiation sensor, and an object thereof is to provide an air conditioner location for performing temperature detection of the floor surface.

An air conditioner according to the present invention includes an indoor unit, and the remote controller, which is installed at a predetermined height in a position remote from the indoor unit, wherein the remote controller detects the radiation temperature at predetermined time intervals Radiating temperature detecting means for transmitting the detected radiation temperature as temperature information to the indoor unit, and the indoor unit determines the temperature used for air conditioning based on the temperature information transmitted from the radiation temperature detecting means. A control device for calculating and controlling the temperature, wherein the radiation temperature detecting means is installed so that a detection direction of the radiation temperature is directed from a horizontal to a lower range, and the control device is a temperature used for the previous air conditioning. Control is performed such that an average value of the temperature information within a fixed time interval excluding the detected temperature farthest from the information is used for air conditioning .

The air conditioner remote control according to the present invention is a remote control that is installed on an indoor wall and operates an indoor unit,
The remote control comprises a radiation temperature detecting means for mainly detecting the radiation temperature of the floor, and a cover that covers the radiation temperature detecting means and that can transmit and close infrared rays,
The radiation temperature detecting means detects a radiation temperature of the material, and performs temperature control based on the detected temperature information.

  In the air conditioner according to the present invention, the temperature of the floor surface is mainly detected by the remote controller equipped with the radiation temperature detecting means, so that it is possible to detect the temperature without being affected by the temperature of the wall surface or the like. The temperature can be controlled, and there is an effect that comfortable conditioned air can be obtained.

It is a system diagram which shows the outline | summary of the air conditioning apparatus which concerns on Embodiment 1 of this invention. It is a structural diagram which shows the structure of the remote control in Embodiment 1 of this invention. It is a structural diagram which shows the structure of the principal part of the remote control in Embodiment 1 of this invention. It is a structural diagram which shows the structure of the radiation sensor in Embodiment 1 of this invention. It is an external view which shows the outline | summary of the remote control in Embodiment 1 of this invention. It is a figure which shows an example of installation of the remote control in Embodiment 1 of this invention. It is explanatory drawing which shows the outline | summary of the processing method of the temperature detection data in Embodiment 1 of this invention. It is a structural diagram which shows the structure of the remote control in Embodiment 2 of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Embodiment 1 FIG.
FIG. 1 is a system diagram showing an overview of an air-conditioning apparatus according to Embodiment 1 of the present invention.
As shown in FIG. 1, an indoor unit 2 and a remote controller 3 for operating the indoor unit 2 are installed in the room 1. The remote controller 3 and the indoor unit 2 are connected by a communication line 4 and transmit / receive driving operation signals, driving state signals, and the like. From the remote controller 3, the operation of the indoor unit 2 such as operation, stop operation, operation mode switching such as cooling and heating, and air volume switching is performed, and the set temperature, current temperature, Displays the operation status such as operation mode and air volume. The remote control 3 is installed at a position where the height from the floor is 1.2 m, for example.

  The indoor unit 2 is not shown in the drawing for the internal configuration, but in this example, a ceiling-embedded indoor unit is shown. A fan and a heat exchanger (not shown) are provided inside the main body of the indoor unit 2. The indoor air (indicated by an arrow A) is sucked from a suction grill at the center of the main body, and the indoor air and heat are absorbed by the heat exchanger inside the main body. The exchanged and air-conditioned air (indicated by arrow B) is blown out into the room 1 from the blow-out grill provided on the four sides of the main body.

FIGS. 2A to 2C are structural views showing the configuration of the remote control 3 in the first embodiment of the present invention. (A) is an external view of the remote control 3, (b) is an external view showing a state where the remote control cover 6 is removed, and (c) is an external view showing the remote control body 7 with the remote control cover 6 removed.
As shown in FIG. 2, the remote control 3 includes a remote control cover 6 and a remote control body 7. The remote control cover 6 can be removed at the time of remote control construction.

  The remote control 3 is structured to be attached to the wall of the room 1 and is provided with a screw hole 9 for screwing to the wall surface when the remote control cover 6 is removed and a terminal block 8 for connecting the communication line 4. ing. The terminal block 8 is provided at the upper end of the remote control body 7. The communication line 4 connected to the terminal block 8 is connected to the indoor unit 2 through a conduit in the wall. In a state where the remote control cover 6 is attached, the hole continuing in the wall is constructed so as not to be visible from the outside. When the communication line 4 cannot be installed in the wall, the electric pipe may be exposed on the wall surface. For simplification, the buttons of the remote controller 3 used for driving operation are not shown.

  For example, a radiation sensor 10 (radiation temperature detecting means) that detects infrared rays radiated from an object such as a floor of a room and detects the temperature of the object is installed near the right bottom surface of the remote controller 3. The radiation sensor 10 is provided in a recess provided at the lower end of the remote control body 7, and the remote control cover 6 is provided with a cover (sensor cover) 11 that covers the radiation sensor 10. Further, the liquid crystal display unit 5 is provided on the remote control body 7 so that the display can be visually recognized through a transparent window or the like provided on the sensor cover 11.

FIGS. 3A to 3C are structural diagrams showing the configuration of the main part of the remote controller 3 according to Embodiment 1 of the present invention. (A) is an external view of the remote controller 3, (b) is an external view showing a state in which the sensor cover 11 is opened, and (c) is an external view showing a state in which the sensor cover 11 is removed.
A sensor cover 11 is installed on the radiation sensor 10, and the radiation sensor 10 can be confirmed by opening the sensor cover 11 by hand (FIG. 3B). The sensor cover 11 is formed in, for example, an L shape, and is formed of, for example, a translucent member (plastic or the like). In addition, the sensor cover 11 should just be a material which permeate | transmits infrared rays. The sensor cover 11 can open and close the bottom side of the remote control 3 (remote control cover 6) to a shaft (not shown), and the shaft is lightly fixed to the remote control cover 6. It can be easily removed. A state where the sensor cover 11 is removed is shown in FIG.

FIG. 4 is a structural diagram showing the configuration of the radiation sensor 10 according to Embodiment 1 of the present invention.
In the radiation sensor 10 built in the remote controller 3, the sensor unit 12 is fixed by a resin case 13, and a disk-shaped operation dial 14 is installed on the right side of the resin case 13. A short shaft 15 is installed at each of the central portion of the operation dial 14 and the central portion of the side surface of the resin case 13 on the opposite side, and the radiation sensor 10 and the remote control body 7 are connected by the short shaft 15. The radiation sensor 10 is rotated about the short axis 15 by rotating the operation dial 14 with a finger. In FIG. 3C, the radiation sensor 10 is directed downward, but when the radiation sensor 10 is rotated forward by the operation dial 14, the result is as shown in FIG.

  The rotation driving (operation) range of the radiation sensor 10 is a range of 90 ° from the center of the visual field (radiation temperature detection direction of the radiation sensor 10) from the downward direction to the horizontal direction. Can do.

  Since the sensor cover 11 is translucent even when the sensor cover 11 is closed, the radiation sensor 10 can detect infrared rays due to radiation from the floor or the like. For example, when the radiation sensor 10 is set downward as shown in FIG. 3A with the sensor cover 11 of the radiation sensor 10 closed, infrared rays are translucent on the lower surface of the L-shaped sensor cover 11. Therefore, the radiation sensor 10 can detect infrared rays. Similarly, when the radiation sensor 10 is oriented horizontally, the infrared light passes through the translucent portion in front of the sensor cover 11, so that the infrared sensor can detect the infrared light.

FIG. 6 is a diagram showing an example of installation of the remote controller 3 in the first embodiment of the present invention. In this example, the viewing angle 16 of the radiation sensor 10 is 45 degrees, and the remote controller 3 is attached to the wall surface 17 at a height of 1.2 m from the floor surface 18.
Since the direction (viewing direction) of the radiation sensor 10 can be changed by the operation dial 14, depending on the local environment when there is an obstacle under the remote control 3 or when it is desired to detect the temperature of a distant floor surface, etc. Can be changed.

  The detected temperature information of the radiation sensor 10 mounted on the remote controller 3 is transmitted through the communication line 4 that connects the remote controller 3 and the indoor unit 2 in the same manner as the driving operation signal and driving information signal described above. The temperature control is performed based on the temperature information received from 3. As shown in FIG. 1, when two or more indoor units 2 are connected to one remote controller 3, each indoor unit 2 communicates with the remote controller 3 via the communication line 4, Temperature information of the radiation sensor 10 is acquired and temperature control is performed.

  The temperature control of the air conditioner is performed according to a temperature difference obtained by comparing the set temperature of the remote controller 3 with the current temperature detected by the radiation sensor 10. At that time, for the current temperature, an initial setting operation from the remote controller 3 is performed to set a target temperature sensor as a temperature sensor built in the main body of the indoor unit 2 (referred to as a main body temperature sensor) or a radiation sensor 10 ( Floor temperature sensor) or a combination of the main body temperature sensor and the floor temperature sensor information can be selected.

  When the floor temperature + the body temperature sensor is selected, the current temperature Ta is calculated by the equation Ta = A × Tb + (1−A) × Tf based on the detected temperature Tf of the floor temperature sensor and the detected temperature Tb of the body temperature sensor. Calculated. Here, A is a constant and is determined in the range of 0-1. For example, in the cooling mode, A = 0.8 and the detected temperature of the main body temperature sensor is emphasized. In the heating mode, A = 0.3 is set, and the floor temperature sensor is used to eliminate the warm air accumulation near the ceiling and the cooling of the feet. Control with emphasis on the detected temperature.

The floor temperature detected by the remote controller 3 is detected at intervals of 15 seconds, for example. Communication between the remote controller 3 and the indoor unit 2 is performed, for example, at intervals of 1 minute, and among the data for 4 times obtained in 1 minute, the data for the 3 times excluding the data farthest from the data transmitted to the indoor unit last time The average value of the data is transmitted to the indoor unit as the current data.
For example, FIG. 7 is an explanatory diagram showing an outline of a method for processing temperature detection data according to Embodiment 1 of the present invention. As shown in FIG. 7, when the horizontal axis represents time and the vertical axis represents the detected temperature, A represents data transmitted to the indoor unit last time, and B, C, D, and E represent data detected during one minute. Of B, C, D, and E, data C that is farthest from the previous transmission data A is deleted, and an average value is calculated at three points B, D, and E, and F is calculated. This F data is transmitted to the indoor unit as the current floor temperature.

In this manner, by removing data away from the previous data, it is possible to eliminate the influence of a moving body other than the floor that is temporarily detected, such as a person approaching the remote controller 3.
Here, the calculation of the floor temperature based on the data for four times may be performed by a microcomputer mounted on the remote controller 3, or all data is transmitted to the indoor unit 2 and performed by the microcomputer mounted on the indoor unit 2. May be.

  As described above, according to the present embodiment, since the radiation sensor 10 is mounted on the remote controller 3, the floor temperature near the person in the space to be air-conditioned is not affected by the obstacle or the wall surface. It can be detected and air-conditioned to a comfortable air temperature. Moreover, since it is possible to avoid unnecessary air conditioning, an energy saving effect can also be obtained.

  In the present embodiment, the radiation sensor 10 mounted on the remote controller 3 has been described. However, the remote sensor function is not provided, and the radiation sensor is a single sensor housed in a wall mounting case and is connected to the indoor unit control device. The same effect can be obtained when

Embodiment 2. FIG.
FIGS. 8A and 8B are structural diagrams showing the configuration of the remote control 3 in the second embodiment of the present invention. (A) is the external appearance figure of the whole remote control 3, (b) is an external view which shows the state which opened the sensor cover 19 and made the radiation sensor 10 face down.
In the first embodiment, the temperature of the floor surface is detected by the radiation sensor 10, but in the second embodiment, a method for detecting the temperature in the air using the same radiation sensor 10 is shown. is there.

  In the second embodiment, as shown in FIG. 8, the material of the sensor cover 11 shown in FIG. 3 of the first embodiment is changed, and other specifications are the same as those of the first embodiment. A part of the sensor cover 19 in FIG. 8 is made of a material 20 having a small heat capacity such as a metal such as aluminum or copper. Since the sensor cover 19 has a small heat capacity and good heat transfer characteristics, the sensor cover 19 is affected by the temperature of the indoor environment and becomes the same temperature as the indoor air temperature. Therefore, it is possible to detect the indoor air temperature by detecting the radiation of the portion made of the material 20 having a small heat capacity. A material 20 having a small heat capacity is installed on the front side of the L-shaped sensor cover 19, and the L-shaped sensor cover 19 is opened widely until the front portion of the cover faces downward, so that the radiation sensor 10 faces downward. By doing so, the radiation sensor 10 can detect the part which raised the heat-transfer characteristic of the cover (FIG.8 (b)). Note that at least one surface of the sensor cover 19 may be made of the material 20 having a small heat capacity.

  In addition, since the sensor cover 19 is opened, a portion with improved heat transfer characteristics is exposed to the indoor air, and it becomes easier to detect the indoor temperature by radiation, so the temperature followability is better and more accurate. Temperature can be detected.

  DESCRIPTION OF SYMBOLS 1 Indoor 2 Indoor unit 3 Remote control 4 Communication line 5 Liquid crystal display part 6 Remote control cover 7 Remote control body 8 Terminal block 9 Screw hole 10 Radiation sensor 11 Sensor cover 12 Sensor part 13 Resin case , 14 Operation dial, 15 Short axis, 16 Viewing angle, 17 Wall surface, 18 Floor surface, 19 Sensor cover, 20 Material with small heat capacity.

Claims (4)

Indoor unit,
A remote control installed at a predetermined height away from the indoor unit ;
With
The remote controller has a radiation temperature detection means for detecting a radiation temperature at regular time intervals and transmitting the detected radiation temperature as temperature information to the indoor unit,
The indoor unit has a control device that calculates a temperature to be used for air conditioning based on the temperature information transmitted from the radiation temperature detection means, and performs temperature control.
The radiation temperature detection means is installed so that the detection direction of the radiation temperature is directed from the horizontal to the lower range,
The control device performs control so that an average value of the temperature information within a certain time interval excluding a detected temperature farthest from the temperature information used for previous air conditioning is used for air conditioning. apparatus. The radiation temperature detection means includes a shaft provided at an angle of 90 degrees with respect to the detection direction,
The air conditioner according to claim 1, wherein the radiation temperature detecting means is configured to be rotatable about the axis.   3. The air conditioner according to claim 1, further comprising a cover that covers the radiation temperature detecting unit, wherein the cover is configured to transmit infrared light and be detachable. 4. The air conditioner according to claim 3 , wherein the cover that covers the radiation temperature detecting means has a metal in a portion in the detection direction.

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