JPH0579675A - Method and device for radiation temperature control - Google Patents

Abstract

PURPOSE:To control temperature environment in a room by detecting the average temperature of the wide range of floor surface with an IR ray radiation thermometer CONSTITUTION:An IR ray radiation thermometer 3 and a far IR ray radiation panel heater 4 are arranged on a ceiling to detect the infrared ray energy of the wide range of floor surface by the IR ray radiation thermometer 3 and the detecting signal is supplied to a control unit 11 for the thermometer to operate an average temperature while a difference between the average temperature and a set temperature is operated by a temperature regulator 12. The operated temperature difference is supplied to an electric power regulator 14 to control the supplying power for the radiation panel heater 4 by the electric power regulator 14 whereby the temperature of the floor surface, having a large heat capacity, can be kept at the set temperature. Indoor air, having a small heat capacity, is changed so as to follow the temperatures of the floor surface and wall surfaces whereby a comfortable temperature environment, in which a difference between vertical temperature distribution in the upper and the lower part of a room is small, can be maintained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiation temperature control method and a radiation temperature control device.

[0002]

2. Description of the Related Art Conventionally, in radiant heating and cooling, it is unsuitable to use only the indoor air temperature as an index of warmth, and it is not appropriate to control the radiant panel temperature only with a room thermostat, but Since there was no practical instrument for detecting the average radiation temperature, the following method was used for convenience. Therefore, sufficiently effective control could not be performed. (A) The room temperature was detected by the temperature sensor attached to the wall inside the room, and the temperature of the radiant panel was increased or decreased according to the set value to control the room temperature. However, since the indoor radiant panels, walls, floors, etc. have large heat capacities, they cannot follow the changes in room temperature quickly, and there is a considerable time delay, which often impairs the comfort temperature. ..

In order to prevent this, a method of controlling the radiation panel temperature by an outside air thermostat and compensating the operation of the outside air thermostat by a room thermostat, and
Room thermostats can be used to control room temperature limits. (B) As another method, there is proposed a method in which a so-called amenity sensor is arranged indoors, and the value is received by a receiver installed on the ceiling to control the air conditioner.

[0004]

However, in the radiation temperature control method using the above-mentioned conventional temperature sensor, one point in the room is used as a representative point to detect the air temperature at that point, and the indoor heat temperature is not always detected. It was not always representative of the environment. Therefore, since the temperature distribution is likely to be biased and the ambient wall temperature has thermal inertia, control with the indoor air temperature causes a time delay, which tends to cause a vibration phenomenon in which the fluctuation range of the thermal environment is large. There was a problem that the dissatisfaction often occurred.

Also, when the temperature of the radiant panel is controlled by the outside air thermostat and this control is compensated for by the room thermostat, there is a problem that the control characteristic cannot be greatly improved although the control system becomes complicated. .. Furthermore, even when an amenity sensor is used as a sensor, it is not possible to detect a wide range of thermal environment because it detects temperature, humidity, radiant temperature, airflow, etc. at the installation position, and instead of control by the representative point. There is no.

Therefore, the present invention has been made by paying attention to the above-mentioned problems of the conventional example, and it is possible to eliminate the temperature excess difference of the peripheral wall surface due to the response delay between the temperature of the wall surface having a large heat capacity, the floor surface and the room air temperature. It is an object of the present invention to provide a radiant temperature control device and a radiant temperature control method capable of controlling the temperature in a wide range of floor surfaces and wall surfaces.

[0007]

In order to achieve the above-mentioned object, a radiation temperature control method according to a first aspect of the present invention is an infrared radiation thermometer disposed in a temperature control target room, wherein the infrared radiation of the floor surface or wall surface of the room is controlled. Energy is detected, the average temperature of the floor surface or wall surface is calculated from the detected infrared radiation energy, and the temperature of the floor surface or wall surface is determined by the deviation between the calculated average temperature and the preset temperature of the floor surface or wall surface. It is characterized in that the output of the planar radiator to be controlled is controlled.

The radiation temperature control device according to a second aspect of the invention is a planar radiator that controls the temperature of a floor surface or a wall surface installed in a temperature controlled room by radiation, and the temperature of the planar radiator is controlled by the planar radiator. An infrared radiation thermometer for detecting infrared radiation energy of the floor surface or the wall surface, an average temperature calculation means for calculating the average temperature of the measurement surface based on the temperature detection value of the infrared radiation thermometer, and the average temperature calculation means And a radiation amount control means for adjusting the radiation amount of the planar radiator based on a deviation between the average temperature and a preset temperature.

Here, as the infrared radiation thermometer, it is desirable that the infrared radiation hood having a conical shape and an infrared sensor provided on the top of the infrared radiation hood detect a wide range of infrared energy, or the infrared radiation thermometer is tiltable. It is desirable that the infrared energy of a wide range be detected. Further, as the planar radiator, when it is dedicated to heating, it is preferable that the power supplied to the planar radiator be controlled by a power controller according to the temperature difference.

[0010]

In the present invention, the infrared radiant thermometer detects a wide range of infrared radiant energy on the floor surface, wall surface, etc. for controlling the radiant temperature, and the average temperature of the wide floor surface and wall surface is detected from the detected infrared radiant energy Is calculated, and the temperature of the planar radiator is controlled so as to eliminate the difference between the average temperature and the preset temperature, and the radiant temperature of the floor surface, wall surface, etc. with a large heat capacity quickly follows the preset temperature. .. Here, by configuring the infrared radiation thermometer with a conical infrared introducing hood and an infrared sensor arranged on the top of the hood, a wide range of infrared energy can be detected. As another method, by holding the infrared radiation thermometer itself so that it can tilt, a wider range of infrared energy can be detected. Further, in the case of heating only, by applying a sheet heating element as the sheet radiator, the mounting work and the control mode can be simplified.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing an embodiment in which the radiant temperature control device according to the present invention is applied to a radiant heating device. In the figure, 1 is a room as a closed space which is a temperature control target, and an infrared radiation thermometer 3 is attached to a central portion of a ceiling surface 2a with its detecting portion facing the floor surface 2b. A required number of far-infrared radiation panel heaters 4 serving as planar radiators are attached so as to surround 3.

As shown in FIG. 2, the infrared radiation thermometer 3 includes a case body 3b having a circular window 3a on the front surface, and a conical infrared introducing hood 3c mounted on the circular window 3a of the case body 3b. The infrared sensor 3d is provided on the top of the infrared introducing hood 3c, and the light transmitting plate 3e made of, for example, a polyethylene plate is provided on the infrared introducing portion of the infrared hood 3c. Here, the infrared introducing hood 3c has a cone angle of 40 degrees to 60 degrees (60 degrees in the figure).
The infrared sensor 3d outputs a detection signal corresponding to a wide range of infrared radiation energy of the floor surface by introducing infrared rays from the floor surface in this range and irradiating the infrared sensor 3d.

The far-infrared radiation panel heater 4 has, for example, a metallic heat diffusion plate having a high thermal conductivity arranged on the surface of a sheet-like heating element formed of a sheet-like conductive silicone rubber which is heated by electric power. On the surface of this heat diffusion plate, pine, cedar,
A far-infrared high-emissivity material thin film composed of a thin film of wood such as cypress or a powder of minerals such as Otani stone and olivine sand, which is formed by kneading this with an adhesive material is arranged.

A temperature sensor 5 for detecting the temperature of the far infrared radiation panel heater 4 is provided in the vicinity thereof. Then, the radiant temperature of the radiant panel heater 4 is controlled by the control device 6. The control device 6 receives the detection signal output from the infrared radiation thermometer 3 and calculates the average radiation temperature of the floor based on the detection signal. The temperature controller 12 for calculating the deviation between the average floor surface temperature output from the thermometer control unit 11 and the preset temperature, and the temperature detection value of the temperature sensor 5 are input, and the temperature detection value is input. A limit temperature controller 13 that determines whether or not a preset limit temperature of the radiant panel heater 4 has been reached, and outputs an alarm signal indicating that when the limit temperature is reached, and a temperature regulator 1
The deviation signal of 2 and the alarm signal of the limit temperature controller 13 are input, and when the alarm signal is not input, for example, PID calculation is performed based on the deviation signal of the temperature controller 12 to perform the planar heating element of the radiation panel heater 4. Power controller 14 for controlling the power supplied to the power supply and shutting off the power supply when an alarm signal is input. Here, in the power controller 14, the commercial power source from the source terminal TA is connected to the breaker 15,
It is supplied via the power switch 16 and the timer 17. The temperature controller 12 and the power controller 14 constitute radiation amount control means.

Next, the operation of the above embodiment will be described. First, the set temperature of the temperature controller 12 is appropriately set according to the preference of the user. In this state, the power switch 16 is turned on, and the timer 17 is set if necessary, so that power is supplied to the power controller 14 to start temperature control. At this time, the infrared radiation thermometer 3
Since infrared energy in a wide range of b is detected, when furniture or a person exists within the measurement range by the infrared radiation thermometer 3, the infrared radiation energy from these can be included and detected. Since the thermometer control unit 11 calculates the average temperature within the measurement range of the infrared radiation thermometer 3 based on the detection signal of the total meter 3, it is possible to calculate the accurate average temperature of the floor surface having a large heat capacity.

The average temperature is supplied to the temperature controller 12, the deviation from the preset temperature is calculated by the temperature controller 12, and the deviation signal is supplied to the power controller 14. In the controller 14, when the average temperature detected according to the deviation signal is lower (or higher) than the set temperature, the electric power supplied to the planar heating element 4a of the radiation panel heater 4 is increased (or decreased) to increase the radiation panel. The far infrared radiation amount from the heater 4 is increased (or decreased) to control the temperature so that the average temperature of the floor surface and the set temperature become equal. For this reason, the average temperature of the floor surface with a large heat capacity is quickly raised to the set temperature, and at this time, the temperature of the indoor air with a small heat capacity quickly follows the temperature rise of the floor surface. It is possible to reliably prevent the comfort from being impaired due to the temperature difference from the room air.

When the infrared radiation thermometer 3 is installed near the window, the floor surface 2b or the wall surface 2c is exposed to sunlight from the window.
Of the floor panel 2b or the wall surface 2c due to cold radiation to the object in the open air and the radiation panel heater 4 are detected.
Can be reflected in the control of the radiant temperature, and can also be applied to the thermal environment control of the perimeter zone (the indoor window side portion, the indoor and outdoor wall zone). Therefore, by installing infrared radiation thermometers separately in the perimeter zone and the indoor interior zone, it becomes possible to control the radiation temperature of the radiation panel for each zone, and perform optimum temperature control according to the floor surface temperature. be able to.

Further, since the infrared radiation thermometer 3 is installed on the ceiling or the wall surface close to the ceiling, it does not interfere with the arrangement of furniture. Incidentally, when the temperature sensor is applied as in the conventional example, a large number of temperature sensors are buried in the floor surface at a predetermined interval, and the average value of these is calculated to obtain a wide range of average temperatures. However, in this case, there is a problem that it is difficult to protect the temperature sensor, and the temperature sensor is hidden depending on the arrangement of furniture or the like, and accurate temperature detection cannot be performed.

On the other hand, the temperature of the radiant panel heater 4 is detected by the temperature sensor 5, and this detected temperature value is used as the limit temperature controller 1.
When the radiation temperature of the radiation panel heater 4 exceeds a preset upper limit value, an alarm signal is output from the limit temperature controller 13 to the power controller 14, so that the power controller 14 At 14, the supply of electric power to the planar heating element 4a of the radiant panel heater 4 is cut off to prevent overheating and improve safety.

In the first embodiment described above, the case where the far infrared radiation panel heater is applied as the planar radiator has been described, but the invention is not limited to this, and a gypsum board or a pure iron-based planar sheet is used. It goes without saying that a panel heater using a heating element may be applied. Next, a second embodiment of the present invention will be described with reference to FIG.

In the second embodiment, the planar radiator is composed of a radiation panel through which hot water or cold water is passed, and the amount of water passing through the radiation panel is controlled. That is, as shown in FIG. 3, an infrared radiation thermometer 3 is arranged at the center of the ceiling 2a, and the radiation panel 2 has a pipe 21a to which hot water or cold water is supplied so as to surround the infrared radiation thermometer 3.
1 is provided. One end of the pipe 21 a of the radiation panel 21 is connected to the supply side of a water supply source 23 that supplies hot water or cold water via the electromagnetic flow control valve 22, and the other end is directly connected to the return side of the water supply source 23.

The electromagnetic flow control valve 22 is connected to the control device 6
Controlled by. This control device 6 has the above-mentioned first
The limit temperature controller 13 in the embodiment is omitted, and the power controller 14 supplies the electromagnetic flow control valve 22 with a control output for controlling the valve opening degree according to the deviation signal of the temperature controller 12. The structure is the same as that of the above-described first embodiment except that the number is changed to 24. here,
The flow rate controller 24 outputs a control output for increasing the valve opening degree of the flow rate control valve 22 when the deviation signal from the temperature controller 12 indicates that the average detected temperature is lower than the set temperature during heating. On the contrary, for example, when the average detected temperature is lower than the set temperature, for example, the selection switch 24 outputs the adjustment output for reducing the valve opening degree of the flow control valve 22.
Selected by a. The temperature controller 12, the flow rate controller 24, and the electromagnetic flow rate control valve 22 constitute radiation amount control means.

Next, the operation of the second embodiment will be described.
Now, a case of performing heating will be described. Hot water having a predetermined temperature is supplied from the water supply source 23 to the pipe 21a of the radiation panel 21 through the electromagnetic flow control valve 22 and the set temperature of the temperature controller 12 is set by the user. It is appropriately set according to preference, and heating is selected by the selection switch 24a of the flow rate controller.
In this state, the power switch 16 is turned on, and the timer 17 is set if necessary,
Power is supplied to the flow controller 24 to start temperature control. At this time, in the flow rate controller 24, when the average radiation temperature detected according to the deviation signal from the temperature controller 12 is lower (or higher) than the set temperature, the electromagnetic flow control valve 22
The valve opening is increased (or decreased) to increase (or decrease) the amount of heat radiation from the radiation panel 21, and the temperature is controlled so that the average temperature and the set temperature become equal. For this reason,
As in the case of the first embodiment described above, the average temperature of the floor surface having a large heat capacity is quickly raised to the set temperature, and at this time, the temperature of the indoor air having a small heat capacity quickly follows the temperature rise of the floor surface. Therefore, it is possible to reliably prevent the comfort from being impaired due to the temperature difference between the floor surface and the room air.

When performing cooling, the flow rate controller 2
The selection switch 24a of No. 4 selects cooling, and at the same time, cold water of a predetermined temperature is supplied from the water supply source 23 to the pipe 21a of the radiation panel 21 via the electromagnetic flow control valve 22. Thereby, in the flow rate controller 24, the valve opening degree of the electromagnetic flow control valve 22 is increased (or, when the detected average radiation temperature is higher (or lower) than the set temperature according to the deviation signal from the temperature controller 12. The temperature is controlled so that the average temperature and the set temperature become equal to each other by increasing (or decreasing) the example radiation amount from the radiation panel 21.

In each of the above embodiments, the case where the radiation temperature of the floor surface 2b is controlled by the radiation panel 4 has been described. However, the present invention is not limited to this, and the installation position and the number of installations of the radiation panel 4 can be changed to It is also possible to control the radiation temperature of the floor surface 2b and the wall surface 2c or only the wall surface 2c. Further, in the above embodiment, the case where the infrared radiation thermometer 3 is fixedly arranged on the ceiling 2a has been described, but the present invention is not limited to this, and as shown in FIG.
Rotating shafts 3f are respectively provided on opposite side surfaces of b so that the rotating shafts 3f are supported by bearings, and a rotating arm 3g is fixed to one rotating shaft 3f. Link 3
By connecting the rotation arm 3j fixed to the rotation shaft of the electric motor 3i via h and driving the electric motor 3i,
By swinging the case body 3b around the rotating shaft 3f, the temperature measurement range can be made wider.
Further, a rotating shaft 3f is rotatably pivotally attached to a ring, and a position of the ring orthogonal to the rotating shaft 3f is pivotally attached to a fixed portion so as to be electrically driven to the upper end of the case body 3b. The case body 3b may be circularly moved while inclining the case body 3b by connecting a rotary arm attached to the rotary shaft of the motor.

Furthermore, in the second embodiment described above, the case where a radiation panel having a pipe for passing hot water or cold water as the planar radiator is applied has been described, but the present invention is not limited to this, and FIG. As shown in FIG. 3, a thermoelectric element may be used to form the planar radiator. That is, the P-type thermoelectric element 31 and the N-type thermoelectric element 32 are arranged in parallel, one end of each of them is connected by the conductive joint portion 33, and the joint portion 34 is provided on the other end side thereof.
Is connected to the DC power supply circuit 35. According to this configuration, when a direct current flowing from the DC power supply circuit 35 to the P-type thermoelectric element 32 from the N-type thermoelectric element 32 is caused to flow, the joint portion 33 has an endothermic action and the joint portion 34 has a heating action. The radiation amount can be controlled by controlling the direct current value.

Furthermore, in each of the above embodiments, the case where the present invention is applied to the air conditioner for a living room has been described, but the present invention is not limited to this, and a drying room, a greenhouse,
It can be applied not only to temperature control of refrigerated warehouses, but also to temperature control of athletics facilities in large spaces.

[0028]

As described above, according to the radiation temperature control method and apparatus according to the first or second aspect, the temperature of the floor surface, the wall surface and the like is controlled by the radiation from the planar radiator, and the controlled object is The infrared radiation thermometer measures a wide range of infrared energy on the floor surface, wall surface, etc., and the average temperature calculation means calculates the average temperature based on the measured value, which is supplied to the radiation amount control means to obtain the average temperature. Since the radiation amount of the planar radiator is controlled according to the deviation between the set temperature and the set temperature, the radiation amount of the planar radiator is controlled by the difference between the average temperature of the floor surface or wall surface with a large heat capacity and the set temperature. By doing so, the surface temperature of an object with a large heat capacity can be controlled to match the set temperature, and the indoor air temperature with a small heat capacity will match the set temperature following this, so that the Response delay The infrared radiation thermometer can detect a wide range of infrared energy, and by arranging multiple infrared radiation thermometers in each predetermined zone, There is an effect that temperature control can be performed in units.

According to the radiant temperature control device of the third aspect, the infrared radiation thermometer comprises a conical infrared introducing hood and an infrared sensor arranged on the top of the infrared introducing hood, whereby the floor surface or the wall surface. The infrared energy of a wide range can be detected, and the average temperature of a wide range can be detected. Further, according to the radiation temperature control device of the fourth aspect, since the infrared radiation thermometer can be tilted, it is possible to detect a wider range of infrared energy.

Further, according to the radiation temperature control device of the fifth aspect, a sheet heating element is applied as the sheet radiator.
Since the electric power supplied to the planar heating element is controlled by the power regulator, the mounting operation of the planar heating element is easy, and the power control can be performed with high accuracy.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a first embodiment of the present invention.

FIG. 2 is a configuration diagram showing an example of an infrared radiation thermometer.

FIG. 3 is a configuration diagram showing a second embodiment of the present invention.

FIG. 4 is a configuration diagram showing another example of an infrared radiation thermometer.

FIG. 5 is a configuration diagram showing another example of the planar radiator.

[Explanation of symbols]

 1 Indoor 2a Ceiling 2b Floor 2c Wall 3 Infrared radiation thermometer 4 Far infrared radiation panel heater 4a Planar heating element 6 Control device 11 Thermometer control unit 12 Temperature controller 13 Limit temperature controller 14 Power controller 21 Radiation panel 22 electromagnetic flow control valve 24 flow controller

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Toshiyuki Harada 3-3-22 Nakanoshima, Kita-ku, Osaka City, Osaka Prefecture Kansai Electric Power Co., Inc. (72) Shigehiko Yamamoto 3-chome Nakanoshima, Kita-ku, Osaka City, Osaka Prefecture No.22 In Kansai Electric Power Co., Inc. (72) Inventor Hideki Suematsu 3-3-22 Nakanoshima, Kita-ku, Osaka City, Osaka Prefecture Kansai Electric Power Co., Inc.

Claims (5)

[Claims] 1. An infrared radiation thermometer arranged in a temperature controlled room detects infrared radiation energy of a floor surface or wall surface of the room, and calculates an average temperature of the floor surface or wall surface from the detected infrared radiation energy. A radiation temperature control method comprising controlling the output of a sheet-like radiator for controlling the temperature of the floor surface or the wall surface by a deviation between the calculated average temperature and a preset temperature of the floor surface or the wall surface. 2. A planar radiator that controls the temperature of a floor surface or wall surface installed in a temperature-controlled room by radiation, and infrared radiation energy of the floor surface or wall surface that is temperature-controlled by the planar radiator body is detected. An infrared radiation thermometer, an average temperature calculation means for calculating the average temperature of the measurement surface based on the detection signal of the infrared radiation thermometer, the average temperature calculated by the average temperature calculation means and a preset temperature setting A radiation temperature control device, comprising: a radiation amount control means for adjusting a radiation amount of the planar radiator based on a deviation. 3. The radiation temperature control device according to claim 2, wherein the infrared radiation thermometer comprises a cone-shaped infrared introducing hood and an infrared sensor arranged on the top thereof. 4. The radiation temperature control device according to claim 2, wherein the infrared radiation thermometer is tiltably arranged. 5. The sheet radiator according to claim 2, wherein the sheet radiator is a sheet heater, and the radiation amount control means is a power controller that controls the power supplied to the sheet heater. The radiation temperature control device according to any one of claims.