JP2004286338A - Heating system - Google Patents

Abstract

An object of the present invention is to provide a heater that can switch between hot air heating and radiant heating, that reduces odor at the time of stopping combustion and that has high comfort.
A combustion stop control unit (53) stops fuel supply to a pump (22) when the combustion is stopped, and after a first predetermined time, closes a nozzle (31) with an electromagnetic solenoid (33) to stop ejection of fuel vaporized gas from the vaporizing unit. A fire extinguishing operation for extinguishing the combustion in the combustion section is performed. When the fire extinguishing operation is stopped in the radiant heating operation, the fire extinguishing operation is performed as it is. After that, the fire extinguishing operation is performed to suppress the generation of odor when the combustion is stopped, thereby improving the usability.
[Selection diagram] Fig. 1

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a heating device using radiant heat and hot air.
[0002]
[Prior art]
Conventional heating with hot air is effective when the room temperature is raised at a stretch when the room is cold, and heating by radiation takes time to warm the whole room, but it is persistent as heating that does not feel a sense of airflow popular. In recent years, there has been a demand for heating users due to the problem of allergen substances such as mite feces that wind up hot air, and the tendency to dislike air sensation has arisen in heating using hot air.
[0003]
Therefore, a heating device using radiant heat and hot air as described below has been developed. Referring to FIGS. 5 to 7, reference numeral 1 denotes a combustion unit for burning fuel, which is covered by a combustion tube 2 arranged to guide combustion exhaust gas generated in the combustion unit 1 upward. The section 1 and the combustion tube 2 form a high-temperature gas generating means for generating a high-temperature gas.
[0004]
Reference numeral 3 denotes a radiator which collects high-temperature combustion exhaust gas flowing through the radiator heating air passage 4 at the heat collecting surface 5 and generates the collected heat as radiant energy.
[0005]
Numeral 6 denotes a radiating means cooling air path for flowing an air flow between the radiant body heating air path 4 and the equipment housing 7 to reduce heat conduction to the equipment housing 7 during the radiant heating operation. The airflow flowing through 6 is discharged upward and forward of the device to form a circulating airflow in the room.
[0006]
Reference numeral 8 denotes a hot air outlet located below the radiating means cooling air passage 6 and disposed below the radiator 3 so that the combustion exhaust gas generated by the combustion section 1 and the indoor air flow are mixed and discharged as hot air. ing.
[0007]
9 is a blowing means for supplying indoor air as an air flow, and this air flow is switched to a radiating means cooling air path 6 side or a hot air outlet 8 side by a high temperature gas switching means 11 via a main body cooling air path 10. It is flowing.
[0008]
Reference numeral 12 denotes an operation unit for setting the operating conditions of the device. A manual switching button 13 for switching the high-temperature gas generated in the combustion unit 1 to the radiator 3 side or the hot-air outlet 8 side by the high-temperature gas switching unit 11, An automatic switching button 14 for automatically switching between the radiant heating operation and the hot air heating operation based on the set conditions is provided.
[0009]
Reference numeral 15 denotes a control unit, which is disposed at a suction port of the blowing unit 9 and detects temperature as a representative temperature of a room by the device. 8 and the high-temperature gas switching means 11 are controlled in a predetermined sequence.
[0010]
In the above configuration, when the high-temperature gas switching means 11 switches the air flow from the blowing means 9 to the radiating means cooling air path 6 side, the radiant heating operation is performed, the entrance of the radiating means cooling air path 6 is opened, and the blowing means 9 is opened. From the air flows into the radiating means cooling air passage 6, and the flue gas generated in the combustion part 1 flows upwardly of the combustion tube 2 due to the force flowing downward, and further upwards by the draft by the heat. The flow is guided to the radiator heating air passage 4.
[0011]
Then, the heat collecting surface 5 of the radiator 3 is heated to a high temperature by the high-temperature combustion exhaust gas generated in the combustion section 1, and the heat collected by the heat collecting surface 5 is generated as radiant energy from the radiator 3 to perform radiant heating. Will be able to do it. At the same time, the air flow that has flowed into the radiating means cooling air passage 6 is discharged as warm air to the front and upper part of the device to form a circulating flow of room air. The air in the entire room is mixed, and the temperature of the entire room is almost uniform, thereby improving the feeling of heating, as compared with heating using only radiation.
[0012]
In addition, since the circulating flow is also discharged above the equipment, there is no airflow in front of the equipment, that is, there is no airflow in front of the equipment, that is, the user's living space, and the discomfort caused by airflow is used. The person does not feel it, and the feeling of heating is improved.
[0013]
Further, when the high-temperature gas switching means 11 switches the air flow from the blowing means 9 to the hot air outlet 8 side, a hot air heating operation is performed, the entrance of the radiating means cooling air passage 6 is closed, and the air from the blowing means 9 is closed. The flow flows downward in front of the combustion tube 2 and guides the combustion exhaust gas generated in the combustion unit 1 to the hot air outlet 8 side, and mixes the air flow from the blowing means 9 with the combustion exhaust gas generated in the combustion unit 1 to generate hot air. As a result, it becomes possible to perform hot air heating that discharges from the hot air outlet 8.
[0014]
The control unit 15 also controls the blowing unit 8 and the high-temperature gas based on the room temperature detected by the temperature detection unit 16 and the operating conditions of the manual operation mode switching unit 13 and the automatic operation mode switching unit 14 set by the operation unit 12. The switching means 11 is controlled in a predetermined sequence (for example, see Patent Document 1).
[0015]
[Patent Document 1]
JP-A-2001-15061 (Page 4, FIGS. 1 to 3)
[0016]
[Problems to be solved by the invention]
However, in the above-described conventional configuration, there are two operation modes, that is, a radiant heating operation and a hot air heating operation. At the time of starting combustion and at the time of stopping combustion, the operation can be performed in either operation mode. At the time of heating operation, the user tends to feel the odor at the start of combustion and at the time of combustion stop compared to the radiant heating operation, and at the start of combustion, select a warm air heating operation that is effective when starting room temperature. The disadvantage was that the odor was often felt at the start of heating.
[0017]
That is, at the time of the hot air heating operation, the airflow from the blowing means 9 flows downward and in front of the combustion tube 2 to guide the combustion exhaust gas generated in the combustion section 1 to the hot air outlet 8 side. Combustion exhaust gas will be discharged earlier. Further, at the start of combustion and at the time of combustion stop, the combustion in the combustion part 1 is unbalanced in combustion and easily generates unburned gas. This unburned gas is almost completely burned in the combustion tube 2, but only a small part is discharged. It is released into the room as odor.
[0018]
Then, during the hot air heating operation, the combustion exhaust gas in the combustion tube 2 is quickly discharged, so that the unburned gas generated in the combustion section 1 at the start of combustion and at the time of combustion stop is supplied from the blowing means 9 before the combustion is completed. Mixed with the airflow of the air, and is easily released into the room without being completely burned.Furthermore, the released unburned gas is diffused throughout the room by mixing with the warm air that warms the living space of the room, so that the user feels a lot of odor become.
[0019]
Therefore, the present invention provides a heater capable of switching between hot air heating and radiant heating, in which the odor due to the unburned gas is switched to a radiation operation in which the user is less likely to feel the odor due to unburned gas at the start of combustion and at the time of combustion stop. It aims to reduce the odor at the time and realize a heater with high comfort.
[0020]
[Means for Solving the Problems]
The present invention solves the above problems, a pump for supplying fuel, a vaporizing unit for vaporizing the supplied fuel, a nozzle for ejecting vaporized gas, and an electromagnetic solenoid having a needle valve for opening and closing the nozzle, A combustion unit for burning the ejected gas, a radiator for converting high-temperature gas generated in the combustion unit to radiant energy through a heat collecting surface, a blowing unit for supplying an air flow, and an air flow from the blowing unit. A hot air outlet for mixing the high-temperature gas generated in the combustion part and discharging it as hot air, a high-temperature gas switching means for switching the high-temperature gas generated in the combustion part to the radiator side or the hot air outlet side, and operating conditions are set. An operation unit, and a control unit that controls operation based on conditions set by the operation unit. The control unit stops the operation of the pump at the time of the combustion stop operation, and then, after a first predetermined time, uses the electromagnetic solenoid. It has a combustion stop control unit that performs a fire extinguishing operation by closing the nozzle, and when the operation before the combustion stopping operation is the radiant heating operation, the fire extinguishing operation is performed while the high-temperature gas switching unit remains at the time of stopping the combustion, and the combustion is stopped If the operation before the operation is a hot air heating operation, the high temperature gas switching means is first switched from the hot air outlet to the radiator, and then the nozzle is closed by an electromagnetic solenoid to perform a fire extinguishing operation.
[0021]
According to the above invention, the combustion stop control unit stops the operation of the pump at the time of the combustion stop operation, and then performs the fire extinguishing operation by closing the nozzle by the electromagnetic solenoid after the first predetermined time. Generation of odor can be suppressed, and the feeling of use is improved.
[0022]
In other words, during the combustion stop operation, the pump is stopped and the nozzle is opened for the first predetermined time to gradually reduce the combustion, and then the nozzle is closed by the needle of the electromagnetic solenoid to completely stop the combustion. Therefore, since the fire extinguishing operation is performed after the flame volume is reduced, the generation of unburned gas during fire extinguishing can be reduced, and the generation of odor can be suppressed.
[0023]
Further, the combustion stop control unit performs the fire extinguishing operation as it is when the operation before the stop of the combustion is the radiant heating operation, and first stops the high temperature gas switching unit when the combustion is stopped during the hot air heating operation. Switching from the hot air outlet side to the radiator side, and then performing the fire extinguishing operation, the user can always stop the combustion under low odor conditions, and the feeling of use is improved.
[0024]
In other words, during the combustion stop operation in the radiant heating operation, the high-temperature gas generated in the combustion section is extinguished under the condition switched to the radiator side by the high-temperature gas switching means. Since the gas does not act on the air flow from the air blowing means, the force flowing downward does not act, and the gas flows further upward from the combustion cylinder by the draft by the heat, and is guided to the radiator. Then, the unburned gas at the time of fire extinguishing in the combustion part almost completely completes in the process of slowly flowing upward through the combustion cylinder due to the draft by the heat, and the unburned gas is released into the room. In addition, the released unburned gas is discharged above the equipment, so that it does not reach the user's living space much, so that the user can use it without feeling much odor. Become.
[0025]
Also, when the combustion is stopped in the hot air heating operation, the high temperature gas switching means is first switched from the hot air outlet side to the radiator side, so that the high temperature gas of the combustion exhaust gas generated in the combustion section is generated around the combustion cylinder. The air flow from the blowing means stops flowing, and the same effect as the above-mentioned condition at the time of the combustion stop operation in the radiant heating operation can be obtained, so that the user can use it without feeling much odor, and the feeling of use is greatly improved To improve.
[0026]
BEST MODE FOR CARRYING OUT THE INVENTION
The heating device according to claim 1, wherein a pump for supplying the fuel, a vaporizing unit for vaporizing the supplied fuel, a nozzle for ejecting the vaporized gas, and an electromagnetic solenoid having a needle valve for opening and closing the nozzle, A combustion unit that burns the burned gas, a radiator that converts the high-temperature gas generated in the combustion unit into radiant energy via a heat collecting surface, a blowing unit that supplies an air flow, and air flow from the blowing unit and combustion. A hot air outlet that mixes high-temperature gas generated in the combustion section and discharges it as hot air, a high-temperature gas switching unit that switches the high-temperature gas generated in the combustion section to the radiator side or the hot air outlet side, and an operation section that sets operating conditions and the like. And a control unit for controlling the operation based on the conditions set by the operation unit, wherein the control unit stops the operation of the pump at the time of the combustion stop operation, and then, after a first predetermined time, sets the nozzle by the electromagnetic solenoid. A combustion stop control unit that closes and performs a fire extinguishing operation.If the operation before the combustion stop operation is a radiant heating operation, the combustion stop control unit performs a fire extinguishing operation with the high-temperature gas switching unit at the time of the combustion stop. When the operation before the combustion stop operation is the hot air heating operation, the high temperature gas switching means is first switched from the hot air outlet side to the radiator side at the time of the combustion stop operation, and then the nozzle is closed by an electromagnetic solenoid to extinguish the fire. To do.
[0027]
During the combustion stop operation, the combustion stop control unit gradually stops combustion by stopping the pump and opening the nozzle for a first predetermined time, and then closes the nozzle with a needle of an electromagnetic solenoid. To completely stop the combustion and reduce the flame volume before performing the fire extinguishing operation, so it is possible to reduce the generation of unburned gas at the time of fire extinguishing and suppress the generation of odor. it can.
[0028]
Further, the combustion stop control unit performs the fire extinguishing operation as it is when the operation before the stop of the combustion is the radiant heating operation, and, when the combustion is stopped during the hot air heating operation, the high temperature gas during the combustion stop operation. Since the switching means is switched to the radiator side, the user can always stop the combustion under low odor conditions, and the usability is improved.
[0029]
In other words, during the combustion stop operation in the radiant heating operation, the high-temperature gas generated in the combustion section is extinguished under the condition switched to the radiator side by the high-temperature gas switching means. Since the gas does not act on the air flow from the air blowing means, the force flowing downward does not act, and the gas flows further upward from the combustion cylinder by the draft by the heat, and is guided to the radiator. Then, the unburned gas at the time of fire extinguishing in the combustion part almost completely completes in the process of slowly flowing upward through the combustion cylinder due to the draft by the heat, and the unburned gas is released into the room. In addition, the released unburned gas is discharged above the equipment, so that it does not reach the user's living space much, so that the user can use it without feeling much odor. Become.
[0030]
Also, when the combustion is stopped in the hot air heating operation, the high temperature gas switching means is first switched from the hot air outlet side to the radiator side, so that the high temperature gas of the combustion exhaust gas generated in the combustion section is generated around the combustion cylinder. The air flow from the blowing means stops flowing, and the same effect as the above-mentioned condition at the time of the combustion stop operation in the radiant heating operation can be obtained, so that the user can use it without feeling much odor, and the feeling of use is greatly improved To improve.
[0031]
The heating device according to claim 2 is configured such that the high-temperature gas switching means switches the flow of the indoor air flow from the blowing means to switch the flow of the high-temperature gas to the radiator side or the hot air outlet side.
[0032]
The high-temperature gas switching means is configured to switch the flow of the high-temperature gas to the radiator side or the hot-air outlet side by switching the flow of the indoor air flow from the blowing means, and realizes a highly comfortable heating device with a simple configuration. The switching of the air flow path when the combustion is stopped during the warm air heating operation can be performed relatively smoothly, and the emission of unburned gas can be suppressed.
[0033]
The heating device according to claim 3 is configured such that the radiator carries a catalytic function for purifying air on the whole or a part of the heat collecting surface.
[0034]
Since the radiator has a catalytic function for purifying air on the whole or a part of the heat collecting surface, during the radiant heating operation, the heat collecting surface on which the catalyst is supported by the radiator having a wide surface is provided. The flue gas rises along the line, during which the flue gas is purified by the action of the catalyst. In other words, the combustion exhaust gas comes into contact with the catalyst surface for a long time on a wide surface at a high temperature, so that the catalytic action can be extracted most effectively, and the air purification is promoted.
[0035]
Similarly, unburned gas generated in the combustion section at the start of combustion and at the time of combustion stop also increases in combustion exhaust gas along the heat-collecting surface where the catalyst is carried by the radiator having a wide surface, and during that time, the combustion exhaust gas rises. The exhaust gas is purified by the action of the catalyst. That is, the combustion exhaust gas comes into contact with the catalyst surface for a long time on a wide surface at a high temperature, so that the catalytic action can be extracted most effectively, and the odor can be reduced.
[0036]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0037]
(Example 1)
FIG. 1 is a cross-sectional view of a heating apparatus according to a first embodiment of the present invention during a radiant heating operation, FIG. 2 is a cross-sectional view of the heating apparatus during a hot-air heating operation, FIG. 3 is a cross-sectional view of a main part of a combustion unit, and FIG. It is a control block diagram.
[0038]
First, the combustion section will be described with reference to FIG. 3. Reference numeral 21 denotes a tank holding liquid fuel. A pump 22 is mounted on the upper surface of the tank 21. The fuel is supplied to the vaporizing section 24. In the vaporizing section 24, a vaporizing element 26 for promoting the vaporization of the fuel is disposed in a vaporizing chamber 25 for vaporizing the supplied fuel, and a mixing pipe 27 projects in the center of the vaporizing section 24 so that the mixing pipe 27 is disposed. It is formed in a donut shape so as to surround it, and a heater 28 and a vaporizing part temperature detecting means 29 are arranged on the peripheral wall.
[0039]
Reference numeral 30 denotes a communication passage provided to the nozzle 31 on the side opposite to the mixing pipe 27 with respect to the inlet of the oil feed pipe 23 connected to the vaporization section 24.
[0040]
The nozzle 31 is connected to a return pipe 32 connected to the tank 21 and an electromagnetic solenoid 33, and the electromagnetic solenoid 33 is provided with a needle 34 for opening and closing the nozzle 31.
[0041]
Reference numeral 35 denotes a combustion unit mounted on the upper part of the vaporization unit 24 so as to cover the outlet of the mixing pipe 27, and starts combustion of vaporized gas ejected from a flame hole 35a formed in the peripheral wall of the combustion unit 35 in the vicinity. An ignition means 36 for high-pressure discharge or the like is provided.
[0042]
As shown in FIGS. 1 and 2, the combustion exhaust gas generated in the combustion section 35 is covered with a combustion cylinder 37 arranged to guide the combustion exhaust gas upward. To generate high-temperature gas.
[0043]
Numeral 38 is a radiator that collects heat of the high-temperature combustion exhaust gas flowing through the radiator heating air passage 39 at its heat collecting surface 40 and generates the collected heat as radiant energy. A catalyst having a function of purifying air is carried on the entire surface of the forty.
[0044]
Numeral 41 denotes a radiating means cooling air path for flowing an air flow between the radiator heating air path 39 and the equipment housing 42 to reduce heat conduction to the equipment housing 42 during the radiant heating operation. The airflow flowing through 41 is discharged upward and forward of the device to form a circulating airflow in the room.
[0045]
Reference numeral 43 denotes a warm air outlet located below the radiating means cooling air passage 41 and disposed below the radiator 38. The warm air outlet mixes the combustion exhaust gas generated by the combustion section 35 with the indoor air flow and discharges the mixture as warm air. ing.
[0046]
A blowing means 44 supplies room air as an air flow. This air flow is switched to a radiating means cooling air path 41 side or a hot air outlet 43 side by a high-temperature gas switching means 46 via a main body cooling air path 45. , Is flowing.
[0047]
Reference numeral 47 denotes an operation unit for setting the operation conditions of the device. A switching button 48 for switching the high-temperature gas generated in the combustion unit 35 by the high-temperature gas switching unit 46 to the radiator 38 side or the hot-air outlet 43 side, and a manual radiation button 47 An operation mode switching unit including a display function (LED) 49 for displaying that the operation mode is switched between the heating operation and the hot air heating operation is provided.
[0048]
In FIG. 4, reference numeral 50 denotes a control unit, which is disposed at the suction port of the air blowing means 44 and detects the room temperature as a representative temperature of the room by the device. Is a control unit that controls the blowing unit 44 and the high-temperature gas switching unit 46 in a predetermined sequence based on
[0049]
The control unit 50 is provided with a combustion start control unit 52 for controlling in a predetermined sequence at the start of combustion and a combustion stop control unit 53 for controlling in a predetermined sequence when combustion is stopped.
[0050]
Then, after stopping the fuel supply of the pump 22 at the time of the combustion stop operation, the combustion stop control unit 53 closes the nozzle 31 with the electromagnetic solenoid 33 after the first predetermined time (for example, after 4 seconds), and turns off the fuel from the vaporization unit 24. A fire extinguishing operation is performed to stop the ejection of the vaporized gas and extinguish the combustion in the combustion unit 35. Further, the fire extinguishing operation is configured to switch the high-temperature gas switching means 46 according to the operation state before the combustion stop operation. When the operation before the combustion stop operation is the radiant heating operation, the high-temperature gas switching means 46 The fire extinguishing operation is performed while the combustion is stopped, and thereafter, the hot gas switching means 46 is switched to the hot air outlet 43 side after a second predetermined time (for example, after 10 seconds).
[0051]
When the operation before the combustion stop operation is the hot air heating operation, first, when the combustion is stopped, the high temperature gas switching means 46 is switched from the hot air outlet 43 side to the radiator 38 side, and then the nozzle 31 is closed by the electromagnetic solenoid 33. Then, the fire extinguishing operation is performed, and then after a third predetermined time (for example, after 10 seconds), the high-temperature gas switching means 46 is controlled again to switch to the hot air outlet 43 side in a predetermined sequence. It is.
[0052]
In the above-described configuration, the vaporizing section 24 is heated to the first predetermined temperature by the heater 28, and the oil entering from the inlet of the oil supply pipe 5 is vaporized by the vaporizing element 26 of the vaporizing chamber 25. The vaporized gas flows downward through the communication path 12 below the vaporizing section 24 and reaches the nozzle 31. When the electromagnetic solenoid 33 is operated to open the needle 34 and the vaporized gas is ejected from the nozzle 31, the vaporized gas is discharged. Is supplied into the burner section 17 through the mixing pipe 27 while sucking and mixing the surrounding air, and is ejected from the flame hole 18.
[0053]
Here, when the ignition means 19 is operated, a uniform flame is formed in the large number of flame holes 18 to start combustion, and even if the ignition means 19 is stopped, if the pump 24 continues to supply fuel to the vaporizing section 24, combustion will occur. The generated combustion gas is guided upward by a combustion cylinder 37 disposed so as to cover the periphery of the burner section 17.
[0054]
When the high-temperature gas switching unit 46 switches the air flow from the blowing unit 44 to the radiating unit cooling air passage 41 side, the radiant heating operation is performed, the entrance of the radiating unit cooling air passage 41 is opened, and the air from the blowing unit 44 is opened. The flow flows to the radiating means cooling air passage 41, and the combustion exhaust gas generated in the combustion unit 35 stops flowing due to the air flow from the blowing means 44, flows upward of the combustion cylinder 37, and is further drafted by the heat. To the radiator heating air passage 24.
[0055]
The high-temperature combustion exhaust gas guided to the radiator heating air passage 24 raises the temperature of the sampling surface 40 while rising along the sampling surface 40 of the radiator 38, and radiates the heat collected by the sampling surface 40. It is generated as radiant energy from the body 38 and can perform radiant heating.
[0056]
At the same time, the airflow that has flowed into the radiating means cooling air passage 41 is discharged as warm air to the front upper side of the device to form a circulating flow of room air. The whole air is mixed, and the temperature of the whole room becomes almost uniform, and the feeling of heating is improved as compared with the case of heating using only radiation.
[0057]
In addition, since the circulating flow is also discharged above the equipment, there is no airflow in front of the equipment, that is, there is no airflow in front of the equipment, that is, the user's living space, and the discomfort caused by airflow is used. The person does not feel it, and the feeling of heating is improved.
[0058]
Next, when the high-temperature gas switching means 46 switches the airflow from the blowing means 44 to the hot air outlet 43 side, the hot air heating operation is performed, the entrance of the radiating means cooling air passage 41 is closed, and The airflow flows downward in front of the combustion tube 37 and guides the combustion exhaust gas generated in the combustion section 35 to the hot air outlet 43 side, and mixes the airflow from the blowing means 44 with the combustion exhaust gas generated in the combustion section 35 to generate hot air. Then, the air is discharged from the hot air outlet 43 to perform the hot air heating.
[0059]
Further, the control unit 50 determines the blowing unit 44 and the high-temperature gas switching unit 46 in advance based on the room temperature detected by the temperature detection unit 51 and the operating conditions such as the operation mode switching unit set by the operation unit 47. It is controlled by a sequence.
[0060]
The control unit 50 is provided with a combustion start control unit 52 and a combustion stop control unit 53 in which operating conditions at the time of starting and stopping combustion are set in advance.
[0061]
The combustion start control unit 52 ignites under the condition of the radiant heating operation in which the high temperature gas generated in the combustion unit 35 at the start of combustion is switched to the radiator 38 side, and is set by the operation unit 47 after a predetermined time when the combustion of the combustion unit 35 is stabilized. The high-temperature gas switching means 46 is switched based on the set conditions to keep the radiant heating operation or the hot air heating operation, so that the combustion always starts at the condition of the radiant heating operation at the start of combustion. Therefore, the user can always start burning under low odor conditions, and the feeling of use is improved.
[0062]
That is, the condition of the radiant heating operation at the start of combustion is such that the high temperature gas generated in the combustion section 35 is ignited under the condition that the high temperature gas switching means 46 switches to the radiator 38 side. Since the force of the air flow from the blowing means 44 does not act on the generated high temperature gas of the combustion exhaust gas, the force flowing downward does not act, and the draft due to the heat flows further upward from the combustion tube 37 to the radiator 38. You will be led. Then, the unburned gas at the time of ignition generated in the combustion section 35 is almost completely burned in the process of slowly flowing upward through the combustion tube 37 due to the draft by the heat, and the unburned gas is released into the room. Since the amount of discharged unburned gas is discharged above the equipment 27, it does not reach the user's living space much, and the user can use it without much odor. It becomes possible, and the usability is greatly improved.
[0063]
Further, after stopping the fuel supply of the pump 22 when the combustion is stopped, the combustion stop control unit 53 closes the nozzle 31 with the electromagnetic solenoid 33 after the first predetermined time (for example, after 4 seconds) and vaporizes the fuel from the vaporization unit 24. Since the fire extinguishing operation is performed to stop the gas injection and extinguish the combustion in the combustion section 35, the generation of odor when the combustion is stopped can be suppressed, and the usability can be improved.
[0064]
In other words, the combustion in the combustion section 35 is gradually reduced after the fuel supply, and then the nozzle 31 is closed with the solenoid needle so that the combustion is completely stopped, that is, the fire extinguishing operation is performed by reducing the flame volume. Therefore, generation of unburned gas at the time of fire extinguishing can be reduced, and generation of odor can be suppressed.
[0065]
Further, the combustion stop control unit 53 performs the fire extinguishing operation as it is when the combustion in the radiant heating operation is stopped, and switches the high temperature gas switching means 46 to the radiator 38 side simultaneously with the fire extinguishing operation when the combustion in the hot air heating operation is stopped. Can always stop burning under low odor conditions, and the feeling of use is improved.
[0066]
In other words, the condition for stopping the combustion in the radiant heating operation is such that the fire is extinguished under the condition that the high-temperature gas generated in the combustion section 35 is switched to the radiator 38 side by the high-temperature gas switching means 46, similarly to the time of the start of combustion. Since the high-temperature gas of the combustion exhaust gas generated in the combustion section 35 does not act on the force of the air flow from the blowing means 44, the force flowing downward does not act, and the heat generated by the heat causes the high-temperature gas to rise further upward from the combustion cylinder 37. To the radiator 38. Then, the unburned gas at the time of fire extinguishing generated in the combustion portion 35 is almost completely completed in a process of slowly flowing upward in the combustion tube 37 due to the draft by the heat, and the unburned gas is released into the room. Since the amount of discharged unburned gas is discharged above the equipment 27, it does not reach the user's living space much, and the user can use it without much odor. become able to.
[0067]
The condition for stopping the combustion in the hot air heating operation is that the high temperature gas generated in the combustion unit 35 is first switched from the hot air outlet 43 side to the radiator 38 side by the high temperature gas switching means 46, The high-temperature gas of the combustion exhaust gas generated in the section 35 stops the air flow from the blowing means 44 around the combustion cylinder 37, and an effect close to the condition at the time of stopping the combustion in the radiant heating operation is obtained. It can be used without feeling much, and the usability is greatly improved.
[0068]
Then, the combustion stop control unit 53 performs the fire extinguishing operation when the combustion is stopped in the radiant heating operation, after the second predetermined time (for example, after 10 seconds), and after the combustion stop operation when the combustion is stopped in the hot air heating operation, the third operation. After a predetermined time (for example, 10 seconds), the high-temperature gas switching means 46 is switched to the hot air outlet 43 side. A flow is caused to quickly discharge the high-temperature air in the combustion tube 37, thereby rapidly cooling the combustion unit 35 and the vaporization unit 24, and the fuel in the vaporization unit 24 is vaporized and leaks from the nozzle 31 to generate odor. Can be reduced.
[0069]
Further, since the temperature of the vaporizing section 24 decreases quickly, the energization of the solenoid is stopped, and the closing of the nozzle 31 by the needle can be ended quickly, and the temperature rise of the solenoid itself due to the energization of the solenoid is prevented. Power consumption due to energization can be reduced.
[0070]
Further, since the radiator 38 has a catalytic function for purifying air on the entire heat collecting surface 40, the heat collecting surface 40 with the catalyst supported on the radiator 38 having a wide surface during the radiant heating operation. The flue gas rises along the period, and during that time the flue gas is purified by the action of the catalyst, that is, the flue gas comes into contact with the catalyst surface for a long time on a high temperature wide surface, and the effect of the catalyst is improved. It can be extracted most effectively, and air purification is promoted.
[0071]
Similarly, unburned gas generated in the combustion section 35 at the start of combustion and at the time of combustion stop also increases in combustion exhaust gas along the heat collecting surface 40 in which the catalyst is carried by the radiator 38 having a wide surface. In the meantime, the combustion exhaust gas is purified by the action of the catalyst, that is, the combustion exhaust gas comes into contact with the catalyst surface for a long time on a wide surface of high temperature, so that the effect of the catalyst can be extracted most effectively. As a result, the odor can be reduced.
[0072]
The high-temperature gas switching means 46 is configured to switch the flow of the high-temperature gas to the radiator 38 side or the hot air outlet 43 side by switching the flow of the indoor air flow from the blowing means 44, and has a simple configuration similar to the above. A highly comfortable heating device can be realized.
[0073]
【The invention's effect】
As described above, according to the heating device of the present invention, it is possible to reduce odor due to generation of unburned gas at the time of stopping combustion and improve comfort.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a heating device according to a first embodiment of the present invention during a radiation heating operation.
FIG. 2 is a cross-sectional view of the heating device during a hot air heating operation.
FIG. 3 is a detailed view of a main part of a combustion unit of the heating device.
FIG. 4 is a control block diagram of the heating device.
FIG. 5 is a cross-sectional view of a conventional heating device during a radiation heating operation.
FIG. 6 is a cross-sectional view of the conventional heating device during a hot air heating operation.
FIG. 7 is a control block diagram of the conventional heating device.
[Explanation of symbols]
22 pump
24 Vaporization unit
31 nozzles
33 solenoid
34 Needle
35 Combustion unit
38 radiator
40 Heat collection surface
43 Hot air outlet
44 Blowing means
46 High-temperature gas switching means
47 Operation unit
50 control unit
52 Combustion start control unit
53 Combustion stop control unit

Claims (3)

A pump for supplying fuel, a vaporizing unit for vaporizing the supplied fuel, a nozzle for ejecting vaporized gas, an electromagnetic solenoid having a needle valve for opening and closing the nozzle, and a burning unit for burning the ejected gas, A radiator that converts the high-temperature gas generated in the combustion unit into radiant energy through the heat collecting surface, a blowing unit that supplies an air flow, and a mixture of the air flow from the blowing unit and the high-temperature gas generated in the combustion unit. A hot air outlet for discharging as hot air, a high temperature gas switching means for switching a high temperature gas generated in the combustion section to a radiator side or a hot air outlet side, an operation section for setting operation conditions and the like, and a condition set in the operation section A control unit for controlling the operation based on the following. After the control unit stops the operation of the pump during the combustion stop operation, the nozzle is closed by an electromagnetic solenoid after a first predetermined time to perform a fire extinguishing operation. When the operation before the combustion stop operation is a radiant heating operation, the combustion stop control unit performs a fire extinguishing operation with the high-temperature gas switching unit at the time of the combustion stop, and performs the operation before the combustion stop operation. In the heating apparatus, when the heating operation is a hot air heating operation, the high-temperature gas switching means is first switched from the hot air outlet side to the radiator side when the combustion is stopped, and then the nozzle is closed by an electromagnetic solenoid to perform a fire extinguishing operation. The heating device according to claim 1, wherein the high-temperature gas switching means switches the flow of the high-temperature gas to the radiator side or the hot-air outlet side by switching the flow of the indoor air flow from the blowing means. The heating device according to claim 1 or 2, wherein the radiator has a catalytic function of purifying air on all or a part of the heat collecting surface.

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