JPH06103124B2 - Heat collecting equipment - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating appliance for kitchens, toilets and the like.

Conventional technology Conventionally, heating equipment such as electric heaters, panel heaters, and small electric temperature air heaters used in kitchens and toilets do not control the amount of heat generated or the amount of air blown, or detect the temperature using an air temperature sensor. However, either the amount of heat generated or the amount of air blown is controlled so that it reaches a preset temperature. As an example, FIG. 5 shows a block diagram of a conventional heat collecting device. The signal from the temperature sensor 13 is sent to the comparator 15
Then, the signal is compared with the signal from the air temperature setting means 14, and the controller 16 is operated by the comparison signal to control the heating element 17 to control the air temperature to the set air temperature.

Problems to be Solved by the Invention In a warming device in which the temperature is detected and the amount of heat generated is controlled so that the temperature becomes a set temperature,
Since only the air temperature is detected, when the temperature of the surrounding wall is low, even if the heat collecting device is operating, the temperature is low and the feeling is cold.

Means for Solving the Problems In order to solve the above problems, the warming implement of the present invention has a heating element for heating the room, a blower for blowing the heat generated by the heating element into the room, and From an air temperature sensor that detects an indoor air temperature, an infrared temperature sensor that detects an infrared temperature inside the room, and an air temperature signal input from the air temperature sensor and an infrared temperature signal input from the infrared temperature sensor. Judgment means for judging whether or not a person is present in front of the heating element based on the calculated value, and infrared temperature setting based on a predetermined function when an air temperature signal is input from the air temperature sensor. Infrared temperature setting means for calculating a value, deviation calculating means for calculating a deviation between the infrared temperature setting value signal from the infrared temperature setting means and the infrared temperature signal from the infrared temperature sensor, and the judgment Means When a person is present in front of the heating element based on the human body determination signal, the heating element is operated at the maximum heat generation amount, and when the deviation signal from the deviation calculation means becomes a certain value or less, the blower is operated at a constant air flow rate. It is configured to include a control unit that operates and stops the operation of the blower and the heating element when there is no person in front of the heating element based on the human body determination signal.

The determination means of the present invention is a first calculation means for calculating a calculation value based on a predetermined function from the temperature signal input from the temperature sensor and the infrared temperature signal input from the infrared temperature sensor. A timer, a storage unit that stores the calculated value, a calculation signal that is input from the first calculation unit and a storage signal that is input from the storage unit when a certain period of time has elapsed due to a signal from the timer, Of the second calculation means for calculating the deviation of, and an absent signal is output if the calculation signal is greater than or equal to a predetermined set value, and is input from the second calculation means if the calculated signal is less than the set value. Comparing means for outputting the presence / absence signal based on the deviation signal.

Action According to the present invention, due to the above configuration, there is a person in front of the heating element
It is detected by the judging means that the heating element and the blower are controlled based on the detection signal and the signal from the deviation calculating means.

Since human body detection is performed to collect heat, it operates automatically when necessary and saves power consumption. Further, since the set value of the infrared temperature is determined from the detected air temperature, it is possible to perform a sensation of comfortable warming.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 3 of the accompanying drawings.

In FIG. 1, 1 is an air temperature sensor, 2 is an infrared temperature sensor, 3 is a judgment means for judging whether or not a person is present in front of a heating element, 4 is a calculation means for calculating a set value of infrared temperature,
Reference numeral 5 is a deviation calculating means for calculating a deviation between the signal from the calculating means 4 and the signal from the infrared temperature sensor 2, and 6 is a judging means 3.
It is a control means for controlling the heating element 7 and the blower 8 based on the signal from the above and the signal from the deviation calculating means 5.

The signals from the air temperature sensor 1 and the infrared temperature sensor 2 respectively enter the determination means 3 and it is determined whether or not a person is present in front of the heating element (see FIG. 2). Here, the signals from the air temperature sensor 1 and the infrared temperature sensor 2 are processed by the first calculating means in the judging means 3 based on the equation (1) to obtain the calculated value T. This calculated value T has a correlation with the sensible temperature of the human body.

T = aTa + bTr (1) Here, Ta is a signal from the air temperature sensor 1, Tr is a signal from the infrared temperature sensor 2, and a and b are constants.

Assuming that the air temperature is Ta1 and the infrared temperature is Tr1, the calculated value T1 is T1 = aTa1 + bTr1 from the equation (1), and T1 is stored in the storage means in the determination means 3. Next, when a certain time has elapsed by the signal from the timer in the judging means 3, the first calculating means calculates the calculated value T2 based on the equation (1).

T2 = aTa2 + bTr2 The calculated values T1 and T2 are processed by the second calculating means in the judging means 3 based on the equation (2), and the deviation ΔTd is calculated.

ΔTd = T2-T1 (2) Next, the determination of the presence / absence of a person will be described. First, the comparing means in the judging means 3 compares T2 with a predetermined set value T3, and if T2 ≧ T3, a signal indicating that there is no person in front of the heating element 7 is output. This is because it is not necessary to collect heat if the sensible temperature T3 becomes a high value to some extent.
If T2 <T3, the comparing means compares the absolute value of deviation | ΔTd | with a predetermined constant. The constant in this case is a positive constant C1 if ΔTd is positive, and a positive constant C2 if ΔTd is negative. And ΔTd is positive and | Δ
If Td | is larger than C1, the comparator emits a signal indicating that a person has entered the front surface of the heating element. This signal is emitted continuously until ΔTd is negative and | ΔTd | is greater than C2.
If ΔTd is negative and | ΔTd | is greater than C2, the comparator will emit a signal indicating that a person has left the front of the heating element. This signal is emitted continuously until ΔTd is positive and | ΔTd | is greater than C1. However, when the main power of this heating and collecting device is turned on, the comparator shall emit a signal indicating that a person has left the front of the heating element.

When there is no person in front of the heating element, the temperature is Ta1 ≈ Ta2, and the infrared temperature is the surrounding wall temperature Tr1 ≈ Tr2. Therefore, │ΔTd | It emits a signal that a person has left the front of the heating element. At this time, T2 is stored in the storage means instead of T1. When a person entered the front of the heating element, the temperature was Ta1 and the infrared temperature was a low ambient wall temperature Tr1 until then, but since there was a person in front of the heating element, the temperature was Ta2 (Ta1 ≒ Ta2), but the infrared temperature sensor is the human body surface temperature Tr2 (Tr2> Tr1)
In order to detect the above, the calculation value calculated by the first calculation means based on the equation (1) is T2> T1, ΔTd> 0 and | ΔTd |> C1. It emits a signal indicating that a person has entered the front. This signal is continuously emitted until a person leaves the front surface of the heating element, that is, until ΔTd is negative and | ΔTd | becomes larger than C2. As described above, the determination means 3 determines whether or not a person is present in front of the heating element.

On the other hand, the infrared temperature setting value Tro (see FIG. 3) calculated by the infrared temperature setting means 4 based on the equation (2) and the signal Tr from the infrared temperature sensor 2 are compared by the deviation calculation means 5,
The deviation ΔT = Tro-Tr is calculated.

Tro = cTa + d (2) Here, Ta is a signal from the temperature sensor 1, and c and d are constants.

The control means 6 operates according to the signal ΔT from the deviation calculation means 5 and the human body detection signal from the judgment means 3, and the control means 6 controls the heating element 7 and the blower 8 so that ΔT becomes smaller. In this case, in order to improve the heating performance, at first, only the heating element 7 is operated at the maximum calorific value to rapidly accelerate the heating by radiant heat, and when ΔT becomes a certain value or less, the blower 8 is operated at a constant air amount to obtain ΔT. Heating is performed by radiation and convection so that it becomes zero. FIG. 4 is a schematic configuration diagram of this embodiment.

By the above action, the set value of the infrared temperature is determined from the detected temperature and the heating element and the blower are controlled, so that the heating performance is improved as compared with the conventional case where the temperature is detected and the heating appliance is controlled. There is an effect of doing. In addition, the calculated value that correlates with the sensible temperature is calculated from the output of the air temperature sensor and the infrared temperature sensor, and if this calculated value is above a certain value, the absence signal is output to stop the operation of the equipment, and if it is below a certain value The device operates based on the calculated value based on the presence / absence of a person in front of the device.If the room is warm, the device is not operated.If it is cold, the device is operated depending on the presence / absence of a person in front of the device. Can be controlled, power consumption can be saved, and energy can be saved.

EFFECTS OF THE INVENTION As described above, the following effects can be obtained by the heat collecting device of the present invention.

(1) Since the set value of the infrared temperature is determined from the detected temperature and the heating element and the blower are controlled, the heating performance is improved as compared with the conventional case where the temperature is detected and the heating appliance is controlled. .

(2) A calculated value correlated with the sensible temperature is calculated from the outputs of the air temperature sensor and the infrared temperature sensor, and if this calculated value is above a certain value, an absence signal is output to stop the operation of the device,
If the value is less than a certain value, the device operates based on the calculated value based on the presence / absence of the person in front of the device.If the room is warm, do not operate the device.If the room is cold, the person in front of the device does not operate. The operation of the equipment can be controlled depending on the presence / absence, and power consumption can be saved and energy can be saved.

[Brief description of drawings]

FIG. 1 is a block diagram of a heating device showing an embodiment of the present invention, FIG. 2 is a characteristic diagram showing changes in air temperature and infrared temperature during operation of the heating device, and FIG. 3 is temperature of the heating device. And FIG. 4 is a characteristic diagram showing the relationship between the set value of infrared temperature, FIG. 4 is a schematic configuration diagram of the same heat collecting device, and FIG. 5 is a block diagram of the heat collecting device showing a conventional embodiment. 1 ... Air temperature sensor, 2 ... Infrared temperature sensor, 3 ...
Judgment means, 4 ... Infrared temperature setting means, 5 ... Deviation calculation means, 6 ... Control means, 7 ... Heating element, 8 ... Blower.

Claims (2)

[Claims] 1. A heating element for heating a room, a blower for blowing the heat generated by the heating element into the room, an air temperature sensor for detecting an air temperature in the room, and an infrared temperature in the room. Whether or not a person is present in front of the heating element based on an infrared temperature sensor and a calculated value calculated from an air temperature signal input from the temperature sensor and an infrared temperature signal input from the infrared temperature sensor. Determining means, an infrared temperature setting means for calculating an infrared temperature set value based on a predetermined function when an air temperature signal is input from the temperature sensor, and an infrared temperature setting means When there is a person in front of the heating element based on a human body judgment signal from the judgment means from the deviation calculation means for calculating the deviation between the infrared temperature set value signal and the infrared temperature signal from the infrared temperature sensor, The above When the heat generator is operated at the maximum calorific value and the deviation signal from the deviation calculating means becomes a certain value or less, the blower is operated at a constant air quantity, and no person is present in front of the heat generating element based on the human body judgment signal. Is a warming device comprising the blower and a control means for stopping the operation of the heating element. 2. The first calculating means for calculating a certain calculated value from the temperature signal input from the temperature sensor and the infrared temperature signal input from the infrared temperature sensor based on a predetermined function. A timer, a storage means for storing the calculated value, a calculation signal input from the first calculation means and a storage signal input from the storage means at a time point when a predetermined time has elapsed due to a signal from the timer A second operation means for calculating a deviation between the second operation and the second operation if the operation signal is greater than or equal to a predetermined first set value, and the absence signal is output. The warming implement according to claim 1, further comprising: comparing means for outputting a presence / absence signal based on a deviation signal input from the means.