JPH0643035A - Surface temperature detector - Google Patents

Abstract

PURPOSE:To detect indoor surface temperature through a small opening by moving the field of view of a sensor up to a substantially horizontal angle without projecting the surface temperature sensor through a ceiling surface. CONSTITUTION:A surface temperature sensor 2 is disposed in a casing 3 such that the field angle directs inward when viewed from a direction normal to a perpendicular plane including the center line of the field. Since the sensor field S can be moved closer to the horizon for same field angle, sensor field can be moved substantially up to the horizon without projecting the surface temperature sensor through the ceiling surface when indoor surface temperature is detected through a small opening.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention detects a surface temperature of a window or a floor of a room, and the surface temperature is mainly used for controlling the air conditioner of a blowout unit or a buried unit of an air conditioner. Regarding the device.

[0002]

2. Description of the Related Art Conventionally, one surface temperature sensor is used to detect the indoor surface temperature at a plurality of locations.
As described in Japanese Patent No. 2311134, there is known one in which a surface temperature sensor is rotated about an axis perpendicular to a sensor visual field center axis to linearly move the visual field center.

[0003]

By the way, for example, referring to FIG.
As shown in FIG. 3, a surface temperature detecting device (d) having a surface temperature sensor (c) is installed on the ceiling surface (b) in the interior room away from the window surface (a). When detecting the surface temperature, it is necessary to move the sensor field of view (S) to a shallow angle that is almost horizontal, but for reasons of design, etc., the surface temperature detection device (d) is installed inside the ceiling surface (b). The size of the opening of the casing (e) and the viewing angle of the surface temperature sensor (c) (for example, 7
(°) is limited (see FIG. 8), so when trying to move the sensor field of view (S) to a shallow angle that is approximately horizontal, the sensor field of view (S) is blocked by the ceiling surface (b) and the sensor field of view (S) is blocked. There is a problem that (S) cannot be moved to an angle that is substantially horizontal. In addition, (f) is a waist wall.

It is an object of the present invention to provide a surface temperature detecting device capable of moving a sensor field of view to a substantially horizontal angle without protruding the surface temperature sensor from a ceiling surface or the like.

[0005]

According to the present invention, a surface temperature sensor (2) is provided in a casing (3), and the casing (3) is embedded inside a ceiling surface, etc. Surface temperature detection device (1) that detects the surface temperature of the floor, etc.
Is assumed.

The invention according to claim 1 is such that the surface temperature sensor (2) has an inward sensor viewing angle when viewed from a direction perpendicular to a vertical plane including the sensor viewing center line. To do.

According to the second aspect of the present invention, the reflecting plate member (11) is arranged in the casing (3), and infrared rays are reflected by the reflecting plate member (11) and enter the surface temperature sensor (2). A reflection plate member is arranged in the casing, and infrared rays are reflected by the reflection plate member to enter the surface temperature sensor.

In the invention of claim 3, the surface temperature sensor (2) uses a Fresnel lens.

[0009]

According to the first aspect of the present invention, the surface temperature sensor (2) is horizontally oriented because the sensor viewing angle is inward when viewed from the direction perpendicular to the vertical plane including the sensor viewing center line. The sensor field of view can be set up to a close angle.

According to the second aspect of the present invention, the infrared rays are reflected not by the surface temperature sensor (2) but by the reflecting plate member (11) and enter the surface temperature sensor (2). The field of view of the sensor can be set to a more horizontal angle.

According to the invention of claim 3, since the Fresnel lens is used, it is possible to easily make the sensor viewing angle inward with a compact structure.

[0012]

Embodiments of the present invention will now be described in detail with reference to the drawings.

1 and 2 showing the schematic structure,
(1) is a surface temperature detecting device, and a non-contact type surface temperature sensor (2) for detecting the surface temperature by detecting infrared rays within a certain range is rotatably supported in a casing (3). ing. The surface temperature sensor (2) is
a) and the flange portion (2b), and the flange portion (2
Supporting shafts (4) and (4) are provided on the left and right sides of b). The support shafts (4) and (4) are connected to the distal ends of the rotating members (5A) and (5B) whose base ends are rotatably supported. The base end of one rotating member (5A) is connected to a drive motor (6) arranged outside the casing (2), and the surface temperature sensor (2) is rotated by the rotation of the drive motor (6). Is designed to rotate.

As the surface temperature sensor (2), a Fresnel lens is used, and as shown in FIG. 3, the sensor viewing angle θ seen from a direction perpendicular to a vertical plane including the sensor viewing center line L.
(= 7 °) is facing inward.

With the above construction, in the conventional case (see FIG. 7), the sensor field of view (S) of the surface temperature sensor (C).
It was possible to move the center of the field of view from just below (vertically downward) to an angle α of approximately 60 °, but by rotating the surface temperature sensor (2) around the support shafts (4) and (4), As shown in FIG. 4, the center of the visual field of the sensor visual field (S) of the surface temperature sensor (2) can be moved from right below to an angle β of approximately 70 °. Incidentally, (7)
Is a ceiling surface, (8) is a window surface, and (9) is a waist wall.

Therefore, in detecting the indoor surface temperature from the small opening of the casing (3), the surface temperature sensor (2) does not protrude from the ceiling surface (7), and is closer to horizontal than in the conventional case. The sensor field of view (S) can be moved to an angle. This increases the degree of freedom of the place where the surface temperature sensor (2) is installed. Therefore, for example, if it is used for air conditioning control, the surface temperature of each part in the room can be detected without impairing the aesthetic appearance of the ceiling surface (7),
It is possible to improve comfort.

Further, as shown in FIG. 5, the reflecting plate member (1) is provided inside the casing (3) of the surface temperature detecting device (1A).
1) is provided, and infrared rays are reflected by the reflection plate member (11) and enter the surface temperature sensor (2). It is possible to move the sensor visual field (S) to an angle that is more horizontal. That is, as shown in FIG.
It becomes possible to move the visual field center of the sensor visual field (S) of the surface temperature sensor (2) from right below to an angle γ of approximately 84 °. Incidentally, in FIG. 4, FIG. 6 and FIG. 7, H = 2.
6 m, L1 = 2.6 m, L2 = 4.0 m, L3 = 10.
It is 4m.

Further, when it is necessary to detect the surface temperature even in an angular range where the sensor field of view (S) is blocked by the reflector member (11), the ceiling surface, etc., the reflector member (11) is well-known drive not shown. The reflector member (1
It is also possible to change the angle in 1) and move the center of the visual field after reflection. Specifically, for example, if the reflecting plate member (11) can be rotated about a horizontal axis, the moving of the visual field center by the reflecting plate member (11) and the moving of the visual field center due to direct incidence are continuously connected to each other, and detection is performed. Less leakage. Also, the reflector member (1
By making 1) rotatable about the vertical axis, the center of the field of view can be moved in parallel with the window surface (8), so that even when the window surface (8) is at an oblique position The surface temperature of the window surface (8) can be detected.

Furthermore, the surface temperature sensor in the inclined state (2)
By rotating around the vertical axis, and by arranging the reflector member at a position opposite to the direction in which it is necessary to detect the surface temperature of a portion at an angle near horizontal, the A table surface (not shown) in which the center of the moving field of view is arranged in a column.
Since it crosses diagonally, the possibility of detecting the surface temperature of both the desk surface and the floor surface under the surrounding area becomes high, and the surface temperature of the window surface at a further distant position can also be detected.

Furthermore, when the center of the visual field is moved to an angle close to horizontal by the reflector member (11),
If the reflecting plate member (11) can be rotated around a horizontal axis or a vertical axis and the angle of the reflecting plate member (11) is changed to move the visual field angle after reflection, the visual field after reflection can be changed. It is possible to move the center from an angle close to horizontal to an angle close to below the periphery, and it is possible to detect the surface temperature over a wide range.

Therefore, if the above-mentioned surface temperature detecting device is applied to an air conditioner, it becomes possible to estimate the radiant temperature from the surface temperature of the window surface in consideration of cold draft and solar radiation during heating near the perimeter. Therefore, the air temperature can be corrected and controlled. Also, since the surface temperature of both the interior zone and perimeter zone can be detected from the ceiling surface away from the window surface,
The air conditioning capacity can be properly distributed to each. Also,
Since the air temperature around the occupant's chest and head (residential air temperature) can be estimated from the surface temperature of the desk, it is also possible to control the air conditioner at an air temperature close to that of the occupant. Furthermore, since it is possible to estimate the air temperature at the height near the foot from the surface temperature of the floor surface, it is possible to warm up to the foot during heating.

[0022]

As described above, according to the first aspect of the present invention, the surface temperature sensor has a sensor viewing angle inward when viewed from a direction perpendicular to a vertical plane including the sensor viewing center line. The sensor field of view can be set to an angle close to horizontal. Therefore, if it is used for air conditioning control inside a room such as an office, the degree of freedom of the place where the surface temperature sensor is installed is increased, the aesthetics of the ceiling surface is not impaired, and the comfort is improved by the air conditioning control using the room surface temperature detection Can be made.

The invention of claim 2 uses a reflector member,
Since infrared rays are reflected by the reflecting plate member and are incident on the surface temperature sensor, it is possible to set the sensor field of view to a more horizontal angle than in the case of the first aspect of the invention.

According to the third aspect of the present invention, since the Fresnel lens is used, it is possible to easily make the sensor viewing angle inward with a compact structure.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a surface temperature detection device.

FIG. 2 is an explanatory diagram of an internal mechanism of the surface temperature detection device.

FIG. 3 is an explanatory diagram of a viewing angle of a surface temperature sensor.

FIG. 4 is an explanatory view of the operation of the surface temperature detecting device.

FIG. 5 is a view similar to FIG. 1 for another embodiment.

FIG. 6 is a view similar to FIG. 4 for another embodiment.

FIG. 7 is a view similar to FIG. 4 for a conventional example.

FIG. 8 is a view similar to FIG. 1 for a conventional example.

[Explanation of symbols] 1 surface temperature detection device 2 surface temperature sensor 3 casing 11 reflector member

Claims (3)

[Claims] 1. A surface temperature sensor (2) is provided in a casing (3), and the casing (3) is embedded inside a ceiling surface or the like to detect a surface temperature of a window surface or a floor surface in a room. In the surface temperature detecting device (1), the surface temperature sensor (2) is characterized in that the sensor viewing angle is inward when viewed from a direction perpendicular to a vertical plane including the sensor viewing center line. Surface temperature detection device. 2. A reflector member (1) is provided in a casing (3).
2. The surface temperature detecting device according to claim 1, wherein 1) is provided, and infrared rays are reflected by the reflecting plate member (11) and enter the surface temperature sensor (2). 3. The surface temperature detecting device according to claim 1, wherein the surface temperature sensor (2) uses a Fresnel lens.