JPH0678919B2 - Thermal detection transmitter - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat detection and transmission device for an air conditioner that detects a plurality of heat elements in the environment to control devices and provide a comfortable environment for humans. .

2. Description of the Related Art A conventional remote control device for an air conditioner of this type generally has an input unit 1 for arbitrarily setting an operating condition of the air conditioner and an air temperature sensor 2 for detecting environmental information, as shown in FIG.
And a transmitter 3 for transmitting the information input in the input unit 1 and the information of the temperature sensor 2.

Problems to be Solved by the Invention However, in the above-mentioned configuration, the temperature sensor is used as a sensor for measuring the state of the environment, and fine control cannot be performed. Therefore, we thought of a method in which not only the temperature but also the effects of radiant temperature and airflow are measured and transmitted to the air conditioner body, and the air conditioner body determines the control conditions and controls. There is a problem in that it cannot be used in a conventional air conditioner having no information processing capability in the main body because the main body performs the processing only by transmitting the detection information to the main body.

The present invention solves such a conventional problem, and in the remote controller part, not only the detection of the environmental state and the determination of the thermal state but also the control conditions of the air conditioner such as the set temperature and the blown air volume are determined, and the information By transmitting, the air conditioner can be used even in an air conditioner that has already been marketed and is actually used, and based on the information corresponding to the thermal sensation of the human body, the air conditioner can be more detailed than before. The purpose is to provide a controlled and comfortable thermal space.

Means for Solving the Problems In order to solve the above-mentioned problems, the heat sensing and transmitting device of the present invention has a hollow body having an opening and good internal surface reflectivity to light and heat, and the opening of the hollow body. With the provided porous cover,
A heating element made of a substance whose electric resistance changes according to its own temperature provided inside the hollow body, a control means for maintaining the heating element at different temperatures, an air temperature sensor for measuring an ambient temperature, and an air conditioner. Information on the time measuring device which measures the elapsed time from the start of operation and gives timing for switching the heat generation temperature of the heat generating element, the electric power supplied from the control means to the heat generating element, the temperature sensor, and the time measuring device. A calculation unit that determines the temperature condition of the environment and determines the optimum air-conditioning set temperature and set air volume, an input unit that can arbitrarily input the set temperature, set air volume, etc., and the data and the input determined by the calculation unit A determining unit that determines which of the signals input from the unit is selected, and a transmitting unit that transmits data such as the set temperature and the set air volume according to the determination of the determining unit. In which was made configuration.

Operation The present invention has the above-mentioned structure, in which the heat generating element directly or through the porous cover is reflected on the inner surface of the hollow body to exchange radiant heat with surrounding objects and insolation, and to generate a secondary air flow inside the hollow body. Convective heat exchange is performed, and the porous cover and the hollow body are heated or cooled by radiant heat exchange between the porous cover and the surrounding objects and solar radiation, thereby performing radiant heat exchange with the heating element. At the same time, part of the heat is transferred by conduction. At this time, the shape and dimensions of the hollow body are
Since the proportions of convective heat transfer and radiant heat transfer between the heating element and the surrounding environment are formed to substantially match those of the human body, the magnitude of the load for maintaining the heating element at a constant temperature by the control means varies. It is obtained according to the load for keeping the body temperature of the human body constant. This load can be taken out as an electric signal and the thermal sensation of the human body can be judged from this output. The information of this thermal sensation, the information of the air temperature sensor, and the information of the elapsed time from the start of the operation of the air conditioner are used to determine the setting conditions of the air conditioner and to transmit the operation of the air conditioner. It is possible to do.

Embodiments Embodiments of the present invention will be described below with reference to the accompanying drawings.

In the block diagram shown in FIG. 1, reference numeral 4 denotes a heating element using a thermistor, and as shown in detail in the partially cutaway perspective view of FIG. 2, the inner surface 5 is plated with aluminum having good light heat reflectivity. A resinous hollow body 6 is provided with a porous cover 7 having fine openings whose surface is coated with a matt black color, and the heat insulation portion 8 made of styrofoam is provided outside the hollow body 6.
It consists of

The heating element 4 is controlled by the control means 9 so as to always generate heat at a constant temperature, and from the signal of the control load of the control means 9 at this time, information corresponding to the thermal sensation of the human body is obtained in the computing section 10.

The thermal sensation is rated on a scale of 5 levels: hot, warm, neutral, cool, and cold.

Next, a method of determining the airflow velocity and the radiation temperature by changing the set temperature in two ways according to the measurement time of the clock device 11 will be described.

By switching the heating element 4 at regular time intervals, the heating element is alternately heated by the set temperature Ts' and the set temperature Ts.

The heat balance between the surface of the heating element and the environment when the heating element 4 is maintained at the first set temperature Ts is given by the following equation.

Q = α _c (T _s −T _a ) + α _r (T _s −T _r ) ... (1) However, Q: heat dissipation amount per unit surface area of the heating element (load for controlling the temperature of the heating element to be constant ) Α _c : Convective heat transfer coefficient between heating element and environment T _s : Temperature of heating element (controlled to be constant) _Ta : Air temperature α ₀ : Radiant heat transfer coefficient between heating element and environment T _r : Ambient radiant temperature The heat balance when the heating element is set to the second set temperature Ts _' is as follows, _assuming that the environmental conditions do not change.

Q ′ = α _c (T _s ′ −T _a ) + α _r (T _s ′ −T _r ) ... (2) Here, from equation (1)-(2), Q−Q ′ = α _c (T _s − T _s ′) + α _r (T _s −T _s ) ′ (3) In equation (3), Q, Q ′, T _s , and T _s ′ are known, and α
_{Since r} has a substantially constant angle, α _c can be easily obtained. The relationship between α _c and the air flow velocity u is obtained from a dimensionless equation regarding the forced convection heat transfer of the equivalent cylinder of the human body because the characteristics of the present thermal detection device for the air flow are equivalent to the human body. As an example, Hilpart's dimensionless formula is shown.

N _u = 0.174R _e ^0.618 (4) where N _u = α _c · d / λ R _e = u · d / λ where d: diameter of equivalent cylinder (15 cm) λ: thermal conductivity of air ν: The kinematic viscosity of air Therefore, if α _c is obtained, the air flow velocity u can be obtained.

In addition, the temperature value and α _c obtained by the temperature sensor 14 are _calculated as (1)
The radiation temperature T _r can be obtained by substituting it into the equation.

The above calculation is performed by the microcomputer of the arithmetic unit 10.

The temperature, airflow, and radiant temperature can be adjusted under the conditions of cold, cool, warm, and hot depending on the information on the thermal sensation and the conditions of temperature, air flow velocity, and radiant temperature and the time elapsed since the start of operation of the air conditioner. Which element of the above is the most problematic is determined, and the air flow rate and the set temperature are determined in the calculation unit 10.

As shown in FIG. 3, the input unit 12 allows the user to arbitrarily set the set temperature and the set air volume, and the set temperature and the set air volume determined by the calculating unit 10 in the determining unit 13 are the input unit. 12
It is possible to select whether the set temperature or the set air volume input in step 3 is transmitted by the transmitter 15.

In the above configuration, the thermal sensation is evaluated on a five-level scale, and in each case it is determined which of the air temperature, air flow, and radiant temperature is the problem, and the set temperature and set air volume are determined. Control can be performed.

EFFECTS OF THE INVENTION As described above, according to the thermal detection transmitter of the present invention, the following effects can be obtained.

This device is configured to detect the temperature sensation of the human body and the temperature, air flow, and radiant temperature, determine the set temperature and set air volume of the air conditioner, and send the set temperature and set air volume signals. This device can be used for the main body of the machine, and the control for improving comfort can be easily performed.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a heat detection and transmission device according to an embodiment of the present invention, and FIG. 2 is a partially cutaway perspective view showing configurations of a heating element and a hollow body of the heat detection and transmission device, and FIG. FIG. 4 is a perspective view showing an input section of the same heat detection transmission device, and FIG. 4 is a block diagram showing a configuration of a conventional heat detection transmission device. 4 ... Heating element, 6 ... Hollow body, 7 ... Porous cover,
8 ... Insulation part, 9 ... Control part, 10 ... Calculation part, 11 ... Timing device, 12 ... Input part, 13 ... Determination part, 14 ... Temperature sensor, 15 ... Transmission part.

Claims (1)

[Claims] 1. A hollow body having an opening and having a good inner surface reflectivity to light and heat, a porous cover provided at the opening of the hollow body, and an electric resistance due to its own temperature provided inside the hollow body. With a heating element made of a substance whose temperature changes, a control means for maintaining the heating element at different temperatures, an air temperature sensor for measuring the temperature of the environment, and an elapsed time after the air conditioner starts operation. An optimum air-conditioning set temperature that determines the warming state of the environment from the information supplied from the control unit, the electric power supplied to the heating element from the control means, the temperature sensor, and the timing device, and the timing device that gives the timing for switching the heating temperature of the heating element. And a calculation unit that determines the set air volume,
An input unit capable of arbitrarily inputting a set temperature, a set air volume, etc., and a deciding unit for deciding which of the data decided by the arithmetic unit and the signal inputted from the input unit to be selected,
A heat detection transmitter, comprising: a transmitter that transmits data such as a set temperature and a set air volume according to the determination made by the determining unit.