JP2003065613A - Heating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide visual heating and to prevent the occurrence of an unsafe action by tentacle, in a heating device using a radiation element generating no light. SOLUTION: The heating device is provided with a light source 46 disposed in the vicinity of the radiation element; a surface temperature guessing means 42 having a heating capacity detecting part; a control part 41 to change a quantity of light of a light source 46 based on an indication value determined by the surface temperature guessing means 42. The heating device is designed to light a light source 46 and effect indirect light emission of the approximate whole of a radiation element and obtain a visual heating feeling and prevent the occurrence of an unsafe action by tentacle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radiant heating device using radiant heat.

[0002]

2. Description of the Related Art Conventionally, a heating device of this type has been disclosed in Japanese Utility Model Publication No. 63-
What was described in the 11548 gazette was general. This heating device, as shown in FIG.
In an oil heater in which a combustion cylinder 3 including a burner is provided in a heating chamber 2 in which indoor air is circulated, a panel member 4 connected to the combustion cylinder 3 and having a combustion gas passage, and a hot air blown out to blow out warm air It is configured to have a mouth 5. And
The combustion gas from the combustion tube 3 heats the panel member 4 to generate infrared rays in the room to perform radiant heating, and also enters the heating chamber 2 and is circulated as warm air by the blower 1 from the warm air outlet 5 to the room. , Always start heating with both hot air and radiation.

[0003]

However, in the above-described conventional heating device, the temperature of the radiant surface that generates radiant heat, that is, the panel member 4 is 300 to 500 ° C., which is high in the far infrared ray generating region. There was a problem of accidentally touching hands because there was little visual heating feeling and there was no visual danger.

[0004]

In order to solve the above-mentioned problems, the present invention solves the above-mentioned problems by radiating a body that does not generate light and generates heat as radiant energy, a light source arranged near the radiant body, and a heating capacity of the radiant body. A heating capacity detection unit for detecting the temperature, a surface temperature estimation unit for estimating the surface temperature of the radiation surface, and a control unit for changing the light amount of the light source based on an instruction value obtained by the surface temperature estimation unit, Is lit to cause almost all of the radiator to emit light indirectly, so as to call attention to the fact that the radiation portion and its vicinity are at a high temperature or are at a high temperature.

According to the above invention, even for a radiator that does not emit light, the light source disposed near the radiator is turned on when the radiation section is at a high temperature during operation or until the temperature reaches a high temperature. Since it indirectly emits light, it can be notified that the radiant part and its vicinity are hot, or that the temperature will be high, and a visual feeling of heating can be obtained, as well as unsafe acts such as tentacles. Can be prevented.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION A heating device according to claim 1 is
A radiant body that does not generate light and generates heat as radiant energy, a light source disposed near the radiant body, a heating capacity detection unit that detects the heating capacity of the radiant body, and a surface temperature that estimates the surface temperature of the radiant surface. Estimating means, and a control unit for changing the light amount of the light source based on the instruction value obtained by the surface temperature estimating unit, to turn on the light source to cause almost all of the radiator to emit light indirectly, the radiation unit and its It is configured to call attention to the fact that the vicinity is hot or becomes hot.

By turning on the light source arranged near the radiation part when the radiation part is at a high temperature or until it reaches a high temperature, it is indicated that the radiation part and the vicinity thereof are high in temperature or high in temperature. It is possible to obtain a visual feeling of heating and prevent unsafe acts with tentacles and the like.

Further, in the heating device according to the second aspect, the control unit changes the pulse width based on the instruction value of the surface temperature estimating means to change the light amount of the light source.

As a means for changing the light quantity of the light source, a PWM (Pulse Width Modula) for changing the pulse width is used.
circuit control, the circuit can be simplified, and the change range of the light amount can be controlled in a wide and fine manner, and more advanced visual heating can be provided.

The heating device according to a third aspect of the present invention includes a radiator that does not generate light and generates heat as radiant energy.
A surface temperature estimating unit having a heating capacity detecting unit, and a display unit that changes based on an instruction value obtained by the surface temperature estimating unit, and the radiation unit and the vicinity thereof are high in temperature.
Alternatively, it is configured to call attention to high temperatures.

By turning on and changing the display of, for example, the meter or the level of the display unit when the radiation unit is at a high temperature or until the temperature reaches a high temperature, it is possible to prevent the radiation unit and its vicinity from being at a high temperature or at a high temperature. It is possible to display and obtain a visual feeling of heating, and prevent unsafe acts by tentacles and the like.

Further, in the heating device according to the present invention, the surface temperature estimating means calculates the reached temperature calculating section for calculating the reached surface temperature value according to the heating capacity, and the change speed for updating the estimated surface temperature value. A change speed calculation unit is provided, and the surface temperature estimated value is updated and determined toward the ultimate temperature according to the change speed.

Then, when the heating capacity is switched,
The estimated surface temperature can be changed in the same manner as the actual change of the surface temperature, and visual heating that matches the feeling of heating can be obtained. Further, since the surface temperature estimated value is estimated from the heating capacity and the temperature change rate determined by the heating capacity without using the temperature sensor, it is not necessary to provide the temperature sensor and the configuration can be simplified. .

Further, in the heating device according to the fifth aspect of the present invention, the changing speed calculating section calculates different values when the temperature rises and when the temperature falls.

The estimated surface temperature is the same as the actual change of the surface temperature even under the condition that the temperature change rate is different, such as when the temperature is rising and when the temperature is decreasing, when the operation is started or when the heating capacity is switched. Can be changed.

Further, in the heating device according to the sixth aspect, the change speed calculation unit calculates a value determined in accordance with the temperature decrease speed of the radiation panel when the temperature decreases due to the stop of operation.

Immediately after the operation is stopped, it is displayed that the radiant part and its vicinity are still hot, and the surface temperature estimated value is displayed even when the operation is stopped in accordance with a temperature change different from that when the heating capacity is switched. Can be changed in the same way as the actual change of the surface temperature.

[0018]

EXAMPLE 1 Example 1 of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view of the heating apparatus of the present invention, showing the configuration during radiant heating operation.

In FIG. 1, reference numeral 21 denotes a combustion section for burning fuel, which is covered with a combustion cylinder 22 arranged so as to guide the combustion exhaust gas generated in the combustion section 21 upward. Reference numeral 23 denotes a radiant body that does not emit light and generates heat as radiant energy. A radiant body heating air passage 25 is formed between the radiant body 24 and a radiant panel 24 provided on the back surface. The flue gas is flowed and its heat is collected by the heat collecting surface 26 of the radiator 23.
The heat is collected at and the collected heat is generated as radiant energy.

Reference numeral 28 denotes a light source composed of a plurality of LEDs, which is disposed on the side of the radiator 23 and the radiation panel 24, and allows the light from the light source 28 to pass through between the radiator 23 and the radiation panel 24 so that the radiator 2
Light from the light source 28 is emitted from the inside to the front surface through the slit hole 27. Further, the LED of the light source 28 is driven by pulse output, and the PWM control capable of changing the light amount of the light source by changing the pulse width is used.

Reference numeral 30 is a protective guard having many punching holes provided at a distance so that the user does not touch the surface of the radiator 23 which becomes hot.

Reference numeral 31 is a radiating means cooling air passage for flowing an air flow between the radiant panel 24 and the equipment casing 32 to reduce heat conduction to the equipment casing 32 during the radiant heating operation. Is supplied from a blower means 33 for supplying as an air flow, and is discharged from an outlet 31A of a radiating means cooling air passage 31 arranged at the upper part of the device to form a circulating flow of air in the room.

FIG. 2 is a block diagram according to the first embodiment of the present invention. An operation unit 40 for instructing start / stop of operation and switching of heating capacity, and an air blower according to the heating capacity in response to an instruction from the operation unit 40. Means 47 (same as 33 in FIG. 1) and combustion section 48
It is composed of a control unit 41 for driving (the same as 21 in FIG. 1). Further, the control unit 41 updates the heating capacity detection unit 43 that refers to the heating capacity, the reaching temperature calculation unit 44 that calculates the reaching temperature of the surface temperature of the protection guard 30 from the heating capacity, and the surface temperature of the protection guard 30. A surface temperature estimation unit 42 configured to estimate the temperature of the surface of the protective guard 30 configured by a change speed calculation unit 45 that calculates time is provided, and the light source 4 is determined according to the surface temperature estimated by the surface temperature estimation unit 42.
Light source control unit 4 for adjusting the amount of light 6 (same as 28 in FIG. 1)
9 is provided.

In this embodiment, the radiator 23 is the protective guard 3.
Since the structure is covered with 0, the radiation surface of the heating device serves as the protection guard 30, but the surface of the radiator 23 may be the radiation surface of the heating device without the protection guard 30, for example.

FIG. 3 is a flow chart showing the operation of the first embodiment, and the operation of the above configuration will be described with reference to FIG.

When the operation section 40 starts operation,
In the ultimate temperature calculation unit 44, first in step 50,
It is judged whether it is burning, and if it is burning, step 5
1, the temperature reached on the surface of the protective guard 30 according to the heating capacity referred to by the heating capacity detector 43 is calculated. If combustion is stopped, the process proceeds to step 52 and the surface of the protection guard 30 on which combustion is stopped Calculate the ultimate temperature.

Next, at step 53, the surface temperature estimating means 42 determines whether or not it is the time to update the current estimated temperature value of the surface of the protection guard 30, and if it is not the update timing, the routine proceeds to step 64, where it is the update timing. If so, the routine proceeds to step 54, where it is judged whether or not the estimated surface temperature has reached the ultimate temperature. If yes, the routine proceeds to step 64, and if not, the routine proceeds to step 55. In step 55, the current estimated surface temperature value and the reached temperature are compared to determine whether the surface temperature is increasing or decreasing. If the surface temperature is increasing, the process proceeds to step 60, and if it is decreasing, the process proceeds to step 56. In step 56, the present surface temperature estimated value is decremented by 1 to approach the reached temperature. Next, at step 57, since the temperature change speed is different between the temperature decrease during combustion stop during extinguishing and the temperature decrease due to switching of the heating capacity during combustion, it is determined whether or not combustion is in progress. In step 58, the temperature decrease rate at the time of stopping combustion is set to the surface temperature change rate, and if combustion is in progress, the surface temperature change rate is set to the surface temperature change rate in step 59. In step 60, the current surface temperature estimated value is incremented by 1 to approach the reached temperature, and in step 61, the surface temperature change rate is set to the temperature rising rate. Then, in step 62, the obtained surface temperature change rate is set in the timer for measuring the update timing of the current surface temperature estimated value, and the timer is started.

Next, at step 64, it is judged whether or not the light source is off level (steady temperature when combustion is stopped) by referring to the current estimated surface temperature of the radiator obtained above.
If it is below the light source off level, an instruction to turn off the LED of the light source 46 is given in step 68. If it is larger than the light source off level, the routine proceeds to step 65, where it is judged whether it is less than the maximum value. If it is equal to or larger than the maximum value, an instruction to constantly turn on the LED of the light source 46 (lighting with the maximum light amount) is performed in step 67, and if it is less than the maximum value, the light amount according to the estimated surface temperature value is turned on in step 66. An instruction is issued to drive the LED of the light source 46 with the pulse width obtained in step S1. When the estimated surface temperature value is high, the pulse width is set to a long ON period to brighten the light amount of the light source, and when it is low, the ON period is set to be short so that the light amount of the light source 28 is reduced. The surface temperature of can be displayed.

With the above operation, even after the operation is stopped, the temperature of the radiator is high although the combustion is stopped. Therefore, the light source is turned on in accordance with the temperature change of the surface of the protective guard 30 to prevent unsafe acts. be able to.

Further, the radiation surface can be visually displayed warm, and a more comfortable heating feeling can be obtained by the visual heating effect.

(Embodiment 2) FIG. 4 is a control block diagram of a heating apparatus according to Embodiment 2 of the present invention, and FIG. 5 shows a display example of a display unit 71. The same parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

In FIG. 4, a surface temperature estimating means 42 for estimating the surface temperature of the protective guard 30 and a display control section 70 for changing the display of the display section 71 according to the estimated value are provided.

In the above construction, the protection guard 3
The surface temperature estimating means 42 for estimating the surface temperature of 0 and the display unit 71 according to the estimated surface temperature of the protective guard 30.
Since the display control unit 70 that changes the display of
When the surface temperature of the protection guard 30 is high, the display of FIG. 5A is performed to express that the radiation power is maximum and the surface temperature of the radiator 23 is high. Then, when the surface temperature of the radiator 23 gradually decreases, the display is switched to that of FIGS. 5B to 5F according to the estimated surface temperature of the protective guard 30, and when the combustion stops and the temperature decreases, FIG. The display of (g) indicates that the surface temperature of the protective guard 30 can be displayed.

As described above, by expressing the high temperature of the protective guard, the radiation part and the vicinity thereof or the high temperature by the method of lighting the display part, it is not possible to cause the radiator itself to emit light. Although not provided, unsafe actions such as tentacles can be prevented with a simple configuration without using a device for indirectly emitting a radiation.

[0036]

As described above, according to the present invention,
When the radiant section is at a high temperature or by turning on a light source placed near the radiant section until it reaches a high temperature, it is displayed that the radiant section and its vicinity are hot, or that the temperature becomes high, and visual heating is performed. You can get a feeling,
Unsafe actions can be prevented by using tentacles.

[Brief description of drawings]

FIG. 1 is a sectional view of a heating device according to a first embodiment of the present invention.

FIG. 2 is a block diagram of a control unit of the heating device.

FIG. 3 is a flowchart showing the operation of the heating device.

FIG. 4 is a block diagram of a control unit of a heating device according to a second embodiment of the present invention.

FIG. 5 is a diagram showing a display example of a display unit of the heating device.

FIG. 6 is a sectional view of a conventional heating device.

[Explanation of symbols]

21, 48 Combustion section 23 Radiant 28, 46 light source 41 Control unit 42 Surface temperature estimation means 43 Heating capacity detector 44 Ultimate temperature calculation unit 45 Change speed calculator 71 display

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yukazu Matsuda             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Masayuki Namba             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Takehiko Shigeoka             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F-term (reference) 3L028 AA01 AB01 AC01 EA01 EB04                       EC01 ED03

Claims (6)

[Claims] 1. A radiant body that does not generate light and generates heat as radiant energy, a light source disposed in the vicinity of the radiant body, a heating capacity detection unit that detects a heating capacity of the radiant body, and a surface temperature of a radiant surface. Estimating the surface temperature, and a control unit for changing the light amount of the light source based on the instruction value obtained by the surface temperature estimating means, the light source is turned on and almost the entire radiator is indirectly A heating device that emits light to draw attention to the fact that the radiant part and its vicinity are hot or that they become hot. 2. The heating device according to claim 1, wherein the control unit changes the pulse width based on the instruction value of the surface temperature estimating means to change the light amount of the light source. 3. A radiant body that does not generate light and generates heat as radiant energy, a surface temperature estimating means having a heating capacity detecting section, and a display that changes based on an indication value obtained by the surface temperature estimating means. A heating device that is equipped with a heating section and is designed to call attention to the fact that the radiant section and its vicinity are at high temperature or become hot. 4. The surface temperature estimation means includes a reached temperature calculation unit that calculates a surface temperature reached value according to the heating capacity, and a change speed calculation unit that calculates a change speed that updates the surface temperature estimated value. The heating device according to any one of claims 1 to 3, wherein the estimated surface temperature value is updated and determined toward the ultimate temperature according to the speed. 5. The heating device according to claim 4, wherein the change rate calculation unit calculates different values when the temperature rises and when the temperature falls. 6. The heating device according to claim 4, wherein the change speed calculation unit calculates a value determined in accordance with the temperature decrease speed of the radiation panel when the temperature is decreased due to the operation stop.