KR910002620Y1 - Gas combustion type hot air flow space heater - Google Patents

Abstract

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Description

Gas Fired Hot Air Heating System

1 is a side cross-sectional view of a gas-fired hot air heater of the present invention.

2 is a front cross-sectional view of the gas-fired hot air heater of the present invention.

3 is a front sectional view of a gas-fired hot air heater of the present invention and a circuit diagram of an electronic control device.

4 is a cross-sectional view of the heating element attachment portion according to the gas-fired hot air heater of the present invention.

* Explanation of symbols on drawings and main parts

1: Gas-fired hot air heater 2: Combustion vent

3: gas introduction passage 4: hot air ventilation passage

5: electronic control unit 6: power transistor (heating element)

7: ceramic resistor 8: body case

202: combustion blower 208: exhaust port

209: Outdoor air inlet 403: Hot air blower

405: indoor air inlet 406: warm air outlet

The present invention relates to a gas-fired hot air heating device.

It has a burner, a discharge gas passage for discharging exhaust gas from the burner to the outside, a fan installed in the exhaust gas passage, introducing a discharge gas to discharge to the outside, and a control unit for controlling combustion of the burner. In a forced exhaust type combustion apparatus, the burner and the control unit are blocked by a partition plate, and appear in Japanese Laid-Open Laboratory 59-6197 configured to cool the control unit by having a cooling air passage communicating with the surroundings of the control unit and the exhaust gas passage. have.

In the gas-fired hot air heater having the above configuration, the entire control unit is cooled, but the cooling of the heating element in the control unit is incomplete, resulting in malfunction of the control unit due to disconnection of the wiring or damage of the heating element due to excessive heat generation due to insufficient cooling of the heating element. There was.

The present invention is to cool the heat generating member in the control unit in the gas-fired hot air heating device due to insufficient cooling of the heat generating member due to the lack of cooling of the heating element, the heat dissipating element is excessively radiated to cause a disconnection of the wiring, causing the control member to malfunction It is to solve the conventional defects that cause the failure.The heating element in the control device is separated from the control device and installed in the warm air vent or combustion ventilator to cool by forced blow by a hot air blower or a combustion blower. It aims at eliminating the same defect.

The present invention for the purpose of the present invention is a hot air ventilation passage having an indoor air inlet and an outlet, a hot air blower mounted in the hot air passage, a combustion air passage having an outdoor air inlet and an exhaust, In the warm air heating apparatus provided with the combustion blower installed in the inside, and the gas burner installed downstream of the wind of this combustion blower, the said warm air blower and combustion which provided the heating element in at least one of the said warm air ventilation path and a combustion ventilation path. It consists of the control apparatus which increases and decreases the rotational speed of one of the blowers, and the main body case which accommodates these.

The gas-fired hot air heating device having the above configuration exhibits the following effects and effects.

Since the heating element is installed on at least one of the warm air ventilation path and the combustion ventilation path, the heating element assembled in the control device can be forcedly cooled by at least one of the warm air blower and the combustion blower, so that excessive heat generation due to insufficient cooling of the heating element. As a result, malfunction of the control unit caused by disconnection of the wiring and damage to the heating element can be prevented.

Hereinafter, the gas-fired hot air heating device of the present invention will be described based on the embodiment shown in the drawings.

A gas-fired hot air heater (hereinafter referred to as a "gas hot air heater") 1 includes a combustion air passage 2 for combusting air introduced from the outside and discharging it back to the outside, and this combustion air passage 2 A gas introduction passage (39) for supplying gas into the inside, a hot air passage (4) for exchanging indoor air with the combustion gas of the combustion ventilation passage (2) to form a warm air, and discharging it again, and the combustion ventilation passage (4) And an electronic control device 5 for driving and controlling the combustion ventilation path 2, the gas introduction path 3 and the warm ventilation path 4, and a main body case 8 containing them.

The combustion ventilation path 2 is an outdoor air introduction path 201 having an outdoor air inlet 209 for introducing meat from the outside, and an outdoor air introduction path from the outdoor air introduction path 201 to introduce a combustion ventilation path. (2) The combustion blower 202 which flows air and combustion gas in the inside, the gas blowing nozzle 203 which blows gas into the air introduce | transduced by this combustion blower 202, and gas-mixed air The gas burner 204 in which the combustion flame is formed on the gas injection surface 207 made of ceramics, and the combustion gas combusted by the gas burner 204 and the indoor air circulated by the hot air vent 4 are heat exchanged. And an exhaust passage 206 having a heat exchanger 205 for performing a heat exchanger 205 and an exhaust port 208 for discharging the combustion gas after heat exchange from the heat exchanger 205 to the outside.

The gas introduction path 3 is provided on the upstream side of the combustion gas supply pipe 301 for supplying gas to the gas ejection nozzle 203, and the main valve 302 opened and closed by energization and non-energization, and the main valve. It is provided downstream of 302, and it is provided in the fixed flow volume valve 304 which performs pressure regulation of the outflow amount of gas, and downstream of this constant flow volume valve 304, The proportional control valve 305 which changes, and the bypass pipe 307 which outflows a certain amount of gas from the upstream of the proportional control valve 305 to the gas blowing nozzle 203 irrespective of the open / closed state of the proportional control valve 305. )

The hot air flow passage 4 is a ceramic resistor (7) formed by rotating a power transistor (6), which is a heating element, and a resistor unit inserting a resistor (or a resistance coil wire) into a heat-resistant glass tube and filling the tube with an insulator such as a double-circuit lamp. The indoor air introduction passage 402 formed with a hot air vent 4a having an upper portion formed therein and an indoor air inlet 405 for introducing indoor air into the gas hot air blower 1, and introducing the indoor air. The hot air blower 403 for introducing indoor air in the furnace 402 and flowing air in the hot air blower 4 and the heat exchanger 205 of the combustion air blower 2 is heated to a high temperature. It consists of a hot air discharge path 404 having a hot air discharge port 406 for discharging air.

The electronic controller 5 includes a thermocouple 501 for controlling the rotational speed of the combustion blower 202, a combustion blower 202 of the combustion ventilation path 2, and a main valve of the gas introduction path 3. 302, the proportional control valve 305, the hot air blower 403 of the hot air flow passage 4, and the like are driven and controlled.

In addition, the electronic controller 5 outputs a rotational speed command circuit 502 for issuing a rotational speed command signal in accordance with the output of the thermocouple 501 and an output of the pickup coil 503 for detecting the rotational speed of the combustion blower 202. Differential to input signals from the rotational speed detection circuit 504 and the rotational speed command circuit 502 and the rotational speed detection circuit 504 that generate signals according to the actual rotational speed of the combustion blower 202 by means of An amplifying circuit 505, which operates the power control transistor 6 for controlling the rotation of the blower 202 by the output of the differential amplifying circuit 505 to the rotational speed command circuit 502 and the rotational speed detection circuit 504. The rotational speed of the combustion blower 202 is increased by the output change of the thermocouple 501 so that the rotational speed of the combustion blower 202 increases or decreases so that the difference between the signals is zero. It is controlled up and down according to the predetermined proportional characteristic set at.

Next, the operation of the present embodiment will be described.

The gas ejected from the gas ejection nozzle 203 of the gas introduction passage 3 and the air introduced from the outdoor air inlet 209 are mixed with the gas burner 204, and the gas mixed air is introduced to the gas mixed air. When ignited, a combustion flame is formed on the gas injection surface 207 of the gas burner 204, and the gas injection surface 207 is heated and reddish by the combustion flame. Heat injection is performed. This heat injection amount tends to increase in proportion to the heat generation amount by weighting the amount of gas mixed air introduced into the gas burner 204. In this case, the thermocouple 501 above the gas injection surface 207 is not only directly heated by the combustion flame but also by heat injection from the gas injection surface 207, so that the combustion flame does not change the flame temperature itself. The output of the thermocouple 601 changes corresponding to the calorific value by the increase or decrease of the heat injection amount due to the reduction of the combustion amount. Therefore, when the rotational speed of the combustion blower 202 is increased or decreased in response to the output of the thermocouple 501, the air volume of the gas mixed air is automatically adjusted to the air volume according to the actual calorific value of the gas burner 204, and the combustion When the rotational speed of the blower 202 is increased, the temperature of the heat exchanger 205 increases, and when the speed decreases, the hot air blower 403 changes speed in response to the temperature of the heat exchanger 205. Always remains constant.

The rotation control power transistor 6 is coupled to the indoor air introduction path 402 of the warm air vent 4a by screws 6a and 6b, as shown in FIGS. 4 and 5, and the opening 61. ) And a square having a screw hole 64a through a thin plate-shaped insulating plate 63 having a screw hole 63a in the fastening plate 62 through which the screw holes 61a, 61b, and 61c are drilled. The upper portion 64, the large diameter portion 65a and the small diameter portion 65b attached to the quadrangle portion are fixed by the screws 6c. 65 d of screw holes are formed in the projection 65c of the small diameter part 65b, and the terminal 66a, 66b, 66c is protruded on the opposite side, and comprises the main body 65. FIG.

Claims (4)

A combustion ventilator having an indoor air inlet and a discharge outlet, a warm air vent (4), a warm air blower (403) installed in the warm air vent (4), and an outdoor air inlet (209) and an exhaust vent (208). (2) and a gas-fired hot air heater having a combustion blower 202 provided in the combustion ventilation path 2 and a gas burner installed downstream of the wind of the combustion blower 202, wherein the hot air blower A control device 5 for controlling any one of the 403 and the combustion blower 202, and a main body case 8 for accommodating the same, wherein the hot air vent 4 and the hot air vent 4 are A gas-fired hot air heating device, characterized in that a main body case (8) and a heating element separated therefrom are installed on one side to cool the control unit and the heating element by forced air. The gas-fired hot air heating device according to claim 1, wherein the heating element is composed of a power transistor (6). The gas-fired hot air heating device according to claim 1, wherein the heating element is made of a ceramic resistor. 3. The power transistor 6 according to claim 2, wherein the power transistor 6, which is the heating element, is coupled to the indoor air introduction path of the hot air flow passage by screws 6a and 6b, and the openings 61, the screw holes 61a, and 61b. , Through the fastening plate (61c) and the thin plate-shaped insulating plate (63) through which the screw hole (63a) is drilled, the rectangular upper portions (64) and the terminals (66a) (66b) and (66c) with screw holes. Gas combustion type hot air heating device characterized in that the configuration with.