JP2010019539A - Air heating furnace, heating device and warming device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small air heating furnace using RPF as fuel and having good combustion efficiency and a warming device efficiently performing heat exchange to produce warm air from thermal energy accompanying the combustion of the RPF and supplying the warm air to an agricultural house. <P>SOLUTION: Inside of a case body 10 having a closed structure connected to a warm air fan 71 to form a circulating path of air with the house by a blowout port 10b includes the air heating furnace 20 for generating hot air by using RPF as fuel; hot air pipe lines 61-63 for discharging hot air of the air heating furnace 10 to outside of the case body 10; radiators 40, 50 for releasing heat of the hot air from the hot air pipe lines 61-63 through heat exchange; and an RPF supply duct 27 for supplying the RPF sent from an RPF supply device 2 to the air heating furnace 20. The air within the case body 10 heated by the heat released from the radiators 40, 50 is blown out from the blowout port 10b to the house. The air heating furnace 20 injects combustion air from a vertically long band-shaped injection part to inside of an RPF combustion chamber. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is a hot air furnace that generates hot air by burning RPF (Refuse Paper & Plastic Fuel), which is one of solid fuels, a heating device such as a dryer that directly uses hot air generated in the hot air furnace, and generated in a hot air furnace The present invention relates to a warming machine that supplies warm air obtained by exchanging the heated air to a room such as a house (greenhouse) for agriculture (including horticulture).

  As a warming machine for a house (greenhouse), in a type in which warm air (hot air) heated by a heat source is supplied directly into the house (Patent Document 1), a safe hot air is housed by using electricity as the heat source. Can be supplied within.

  However, the use of electricity is very disadvantageous in terms of running costs compared to the case where liquid fuel such as kerosene or heavy oil is burned. Further, when fuel is burned, RPF can greatly reduce the cost compared to the case of using kerosene or heavy oil, and recently, the use of RPF has been studied.

  The RPF is a high-calorie solid fuel made from waste paper and plastic among general waste and industrial waste, and is made by solidifying waste paper and plastic.

In addition, in a heating machine that burns RPF and supplies hot air into the house, the high-temperature combustion gas generated by the combustion of RPF cannot be directly supplied into the house. The exchanged hot air will be supplied.
JP 2002-305992 A

  Since the operating time of the warmer is long, such as overnight or all day, when RPF is used as an alternative fuel for oil, not only the combustion efficiency of RPF is simply increased, but the generated combustion gas is generated due to the demand for cost reduction. It is desirable to exchange heat with the hot air supplied as much as possible (hot air).

  In addition, a house that requires a heater is generally a large-scale house, and when multiple houses are arranged on the entire site, the space for installing the heater is not necessarily sufficient. Miniaturization of the warmer is also desired.

  In addition, it is very important for a heating machine that uses RPF as a fuel to store RPF, which is a solid fuel, for example, for one day or several days and to supply it automatically to a combustion furnace (hot air furnace) of the heating machine. It is also a matter. In particular, it is a disadvantage for a house farmer that manpower and work time are spent on replenishing RPF, and it is also desired that RPF replenishment work be unnecessary.

  On the other hand, if it is a hot air furnace that can raise the combustion of RPF and discharge clean flue gas, it can also be used in a heating device that blows flue gas (hot air) directly onto the object to be heated, for example, to dry, of course, heat exchange Therefore, it is possible to use other than the above-described heater.

  The first object of the present invention is to solve such a problem, and an object of the present invention is to provide a hot stove capable of enhancing the combustion of RPF and discharging clean combustion exhaust gas.

  The second object of the present invention is to provide a heating apparatus in which an object to be heated is directly heated by the combustion exhaust gas of RPF.

  The third object of the present invention is to exchange heat with hot air as much as possible so that the combustion exhaust gas of RPF can be supplied to agricultural houses and the like, to reduce the size of the apparatus, and further to RPF as fuel. It is to provide a warming machine that can unmanned supply.

  The structure of the hot stove realizing the object of the present invention includes a vertically arranged furnace body formed inside a furnace body, the furnace body being divided into two upper and lower chambers, and an upper section chamber. An RPF combustion chamber having an RPF combustion chamber, an RPF supply duct provided in the furnace body for supplying RPF from outside the furnace body to the RPF combustion section, and hot air as combustion exhaust gas in the RPF combustion chamber to the outside of the furnace body A hot air duct for exhausting, and a combustion air supply part for supplying combustion air into the furnace body, wherein the RPF combustion part includes a cylindrical RPF receiver having upper and lower ends opened, and an RPF receiver The combustion air supply unit is disposed at the lower end and has a grate on which the RPF is placed, and the combustion air supply unit is configured to circulate around a furnace peripheral wall that injects combustion air into the RPF combustion chamber with a strip-like width that is long in the vertical direction. A plurality of strip-shaped injection portions arranged along the direction, and the RP One or a plurality of combustion air nozzles extending to RPF received within the combustion section, and having said furnace bottom ku chamber air supply section for supplying combustion air to the lower ku chamber in the body.

  In the hot air furnace configured as described above, an unburned gas supply pipe for directly supplying unburned gas in the lower chamber of the furnace body to the RPF combustion chamber is provided so as to communicate the lower chamber with the RPF combustion chamber. Can do.

  In the hot stove having any one of the above-described configurations, the grate can be slidable in the horizontal direction with respect to the RPF receiver.

  In the hot air furnace configured as described above, the grate can be slidably operated through a through hole provided in a furnace peripheral wall of the furnace body.

  In any one of the configurations described above, the belt-like injection unit constituting the combustion air supply unit can be configured by arranging a large number of air nozzle units in the vertical and horizontal directions.

  In any one of the configurations described above, the RPF receiving body constituting the RPF combustion portion is formed in an inverted truncated cone shape, and the tip of the combustion air nozzle constituting the combustion air supply portion is extended into the lower end opening. Can be issued.

  In any one of the configurations described above, the lower compartment of the furnace body may be an ash storage section that stores RPF combustion ash that has fallen through the grate.

  In any one of the above-described configurations, a plug tube into which an ignition device for igniting the RPF on the RPF combustion unit is inserted can be provided on the furnace peripheral wall of the furnace body.

  In any one of the configurations described above, the RPF supply duct can be connected to an RPF supply device that can continuously supply RPF in a storage tank in which the RPF is stored.

  In any one of the configurations described above, the RPF supply device includes an RPF storage hopper that stores RPF, and a transporting unit having a sealed structure that is disposed between the RPF supply duct and a lower portion of the RPF storage hopper. be able to.

  The structure of the heating device that realizes the second object of the present invention is connected to the hot air duct of the hot air furnace having any one of the structures described above, and the object to be heated in the hot air blowing casing to which the hot air from the hot air duct is supplied. Is heated.

  In the heating apparatus having the above-described configuration, the hot air blowing housing can be a rotary kiln.

  The structure of the warmer that achieves the third object of the present invention is that the external air is supplied into the room through the air introduction port by the hot air fan, and the heating of the sealed structure that blows the room air out of the room through the air outlet. And a combustion air supplied from the combustion air supply unit to the furnace body, and on the grate in the furnace body from the outside of the heater body through the RPF supply duct. A hot air furnace that generates hot air by burning the RPF supplied to the hot air furnace, a hot air duct that is accommodated in the warmer housing that discharges the hot air generated in the hot air furnace to the outside of the warmer housing, and A radiator that is connected to the hot air duct and that dissipates the supplied hot air by heat exchange and is accommodated in the heater case, and is disposed outside the heater case, and the RPF is continuously supplied to the RPF supply duct. An RPF supply device for supplying to at least And, wherein the blown out from the radiator the said heating unit housing of air warmed by the heat radiated from the outlet.

  In the warmer configured as described above, a dust remover can be connected to the hot air duct upstream of the radiator.

  In the warmer having the above-described configuration, the hot stove is disposed on one side in the warmer casing formed in a rectangular parallelepiped shape, and the other three except for the side wall on the one side where the hot stove is disposed. The hot air fan is provided with the air outlet in any one of the side walls, and the air introduction port is provided in a top plate of the heater case or a side wall not provided with the air outlet in the other three side walls. The air flow in the heater case is formed from the inlet to the outlet.

  In the warmer configured as described above, the radiator includes a first radiator connected in the middle of the hot air duct, and a second radiator connected to a terminal portion of the hot air duct, and the first radiator. A radiator is disposed on the side of the one side wall, a second radiator is disposed on the side of the other side wall, and the space between the first radiator and the second radiator is within the heater case. It connects with the hot-air duct line arrange | positioned at the lower part, The exhaust gas discharged | emitted from the said 2nd radiator can be discharged | emitted by the waste gas fan arrange | positioned out of the said heater housing | casing.

  In the warmer having any one of the configurations described above, an ash storage section that stores combustion ash of RPF is provided at a lower portion of the furnace body of the hot stove and a lower portion of the radiator, and communicates with the outside of the heater case. The ash storage part can be connected to the ash discharge duct.

  In the warmer having any one of the configurations described above, the hot stove can drop the ash by vibrating the grate on which the RPF is placed.

  In the warmer having any one of the configurations described above, a blower fan that supplies combustion air to the combustion air supply section of the hot stove can be disposed outside the warmer casing.

  In the warmer having any one of the configurations described above, the hot stove accommodated in the warmer casing can be a hot stove having any one of the configurations described above.

  In the warmer configured as described above, the temperature of the hot air blown out from the outlet can be adjusted by adjusting the transport speed of the transport means.

  In the warmer configured as described above, in addition to the adjustment of the conveying speed of the conveying means, the blowing amount of the blower fan and the blowing amount of the exhaust gas fan are adjusted and blown out from the outlet. The temperature of the hot air can be adjusted.

  Moreover, it can be set as the following structures as a warming machine which can heat-exchange hot air of a hot-air stove, and can supply warm air.

(1) Combustion chamber for burning RPF as main fuel, heat exchange air is introduced, and a heat exchange chamber for supplying warm air that has been heat-exchanged to the object to be heated is disposed in the heat exchange chamber. And a heating exchanger having at least a heat exchanger that heats the air in the heat exchange chamber when the combustion gas obtained in the combustion chamber passes, and an RPF in the combustion chamber of the heater main body. An RPF supply device for supplying the combustion chamber, wherein the combustion chamber is a grate to which RPF disposed at an upper portion of the ash receiving furnace is supplied, and combustion air for supplying combustion air from above and below toward the grate A heating machine comprising: a nozzle; and discharge means for discharging the ash dropped in the ash receiving kiln to the outside of the machine.
(2) In the warmer of (1), the combustion gas from the combustion chamber is rectified and sent to the heat exchanger in a flow having a uniform temperature distribution, and passes through the heat exchanger. A combustion gas discharge chamber for discharging the burned combustion gas into an exhaust gas pipe that leads to the outside in a uniform flow is disposed on both sides of the heat exchange chamber, and the exhaust gas is extracted from the combustion gas in the combustion gas discharge chamber by the exhaust gas extraction means. It is characterized by being pulled out.
(3) In the warmer of (1) or (2), a circulation system that introduces air in the heating object into the heat exchange chamber to form a warm air circulation path, and air in the heat exchange chamber Air-conditioning means capable of switching the cooling system to replace the outside air with the outside air, and controlling the air-conditioning means based on the temperature in the heating target detected by the temperature sensor so that the temperature in the heating target becomes the set temperature And a controller.
(4) In the warmer of (3) above, the air conditioning means switches between a first state in which air within the heating target is introduced into the heat exchange chamber and a second state in which air outside the device is introduced. An air introduction device that enables the exhaust state, and an exhaust device that enables switching between an exhaust state that exhausts the air in the heat exchange chamber to the outside of the apparatus and an exhaust stop state that stops the exhaust state, and the controller includes: Until the temperature in the heating target detected by the temperature sensor reaches a set temperature, the exhaust device is in an exhaust stop state and the air introduction device is in the first state so that the air in the heating target is exchanged with the heat. When the temperature inside the object to be heated, which is introduced into the room and detected by the temperature sensor, reaches a set temperature, the exhaust device is brought into an exhaust state and the air introduction device is set in a second state to bring outside air into the heat exchange chamber. Introducing and heat exchange Characterized by evacuating the air in the room outside.
(5) In the warming machine according to (4), the air introduction device is configured to exchange the heat in the object to be heated through a first duct portion by an intake fan that is always operated and intake air of the intake fan. A duct that can be introduced into the room and that allows outside air to be introduced into the heat exchange chamber through the second duct part, a first shutter that is disposed in the first duct part, and a duct that is disposed in the second duct part The second shutter is in the closed state, the second state is in the closed state, and the second state is in the closed state. The second shutter is in an open state.
(6) In the warmer of (4) or (5), the exhaust device can open and close an exhaust fan and an exhaust passage for exhausting the air in the heat exchange chamber to the outside by the exhaust of the exhaust fan. The third shutter is operated, and the exhaust fan is operated and the third shutter is operated in the exhaust operation for exhausting the air in the heat exchange chamber to the outside of the apparatus.
(7) In the warmer according to any one of (1) to (6), the combustion gas collecting chamber and the combustion gas discharge chamber are gas having a U-shaped longitudinal section when viewed in the flow direction of the combustion gas. It is formed in a flow path.
(8) In the warming machine according to any one of (1) to (7), the RPF supply device is loaded with a conveying means having an inclined sealed structure and an RPF provided at an inclined lower end portion of the conveying means. And an RPF supply duct that is provided at an inclined upper end portion of the transfer means and that is inserted into the combustion chamber and supplies the RPF transferred by the transfer means into the combustion chamber.
(9) In the warmer of (8), combustion air is supplied into the RPF supply duct.

  According to the warming machine of (1) above, RPF can be continuously supplied onto the grate of the combustion chamber by the RPF supply device, falls from the grate to the ash receiving kiln, and the ash is discharged outside by the discharge means. Therefore, it is possible to automate the discharge of combustion ash from the supply of RPF.

  Further, by supplying combustion air from above and below to the RPF on the grate by the combustion air nozzle, the RPF can be burned completely at a high temperature.

  Furthermore, by passing the high-temperature combustion gas through the heat exchanger, the heated air flowing in the heat exchange chamber can be warmed and supplied in the space to be heated such as a house.

  According to the warming machine of (2) above, the combustion gas can be evenly taken into the heat exchanger, and can be discharged without causing pulsation or the like in the exhaust gas pipe. Heat can be exchanged with warm air.

  According to the heating machine of the above (3), (4), (5), (6), the temperature within the heating target such as a house can be maintained at the set temperature without time lag.

  In addition, by adjusting the opening and adjusting the air flow rate without fully opening the first shutter and the second shutter, a temperature change in a heating target such as a house can be suddenly or gently performed.

  According to the warming machine of (7) above, the length of the flow path of the combustion gas flowing through the combustion gas collection chamber and the combustion gas discharge chamber is lengthened, the combustion gas is rectified and taken into the heat exchanger, The combustion gas can be smoothly discharged from the exchanger to the exhaust gas pipe.

  According to the warmers of (8) and (9) above, continuous supply of RPF to the combustion chamber can be ensured, and combustion gas can be prevented from flowing out of the apparatus through the RPF supply duct.

  According to the hot-blast furnace of the first aspect, the hot air can be generated by burning the RPF. In addition, due to the effective supply of combustion air, high-temperature hot air can be generated even when the furnace body is downsized, and the combustion efficiency of the RPF can be increased, so high-temperature hot air can be obtained with less fuel consumption. High-temperature hot air can be discharged at a lower cost than when burning heavy oil.

  According to the second aspect of the present invention, the combustion efficiency can be improved by burning the unburned gas, and the hot air temperature can be increased.

  According to the third and fourth aspects of the invention, ash accumulates on the grate and does not interfere with the combustion of the RPF, and the RPF can be burned continuously. The grate can be operated and vibrated from outside the furnace.

  According to the fifth aspect of the present invention, the combustion air can be injected into the furnace with a narrow and narrow width vertically without reducing the strength of the furnace peripheral wall.

  According to the invention of claim 6, since combustion air can be directly supplied into the RPF deposited on the grate, the combustion of the RPF can be promoted, the combustion efficiency of the RPF is increased, The temperature can be increased.

  According to the invention which concerns on Claim 7, it can take out the accumulated combustion ash out of the furnace by providing the storage part which stores RPF combustion ash.

  According to the invention which concerns on Claim 8, RPF on a grate can be ignited from the outside of a furnace using a gas burner or a heavy oil burner.

  According to the ninth aspect of the present invention, RPF can be continuously supplied onto the grate over a long period of time, so that no manpower is required for refueling.

  According to the invention which concerns on Claim 10, since the conveyance means is made into the sealing structure, the hot air in a furnace is blown in in a conveyance means, and does not leak outside. In addition, the RPF supply device can have a simple configuration.

  According to the invention relating to the heating device according to the eleventh and twelfth aspects, the object to be heated can be directly heated by the hot hot air.

  According to the invention of the warming machine according to claim 13, the hot air furnace and the radiator disposed in the warming machine housing (heating machine housing) are connected by the hot air duct, For example, by forming an air flow path that circulates with the inside of the house in the body, not only the amount of heat exchanged by the radiator, but also the amount of heat released from the hot stove and hot air duct can be used to heat the house. And effective use of energy.

  Moreover, since it is not the structure which partitions off the inside of a warmer housing | casing into several compartments, the freedom degree of arrangement | positioning of the various apparatuses in a warmer housing increases, and size reduction of a warmer can be achieved.

  According to the invention of claim 14, since RPF is used as the fuel, dust such as ash is contained in the hot air. Therefore, by removing dust etc. with a dust remover before the radiator, the inside of the radiator This prevents dust from adhering to the heat sink and prevents the heat dissipation efficiency of the radiator from decreasing. Further, since dust such as ash contained in the exhaust gas can be removed, clean gas can be discharged into the atmosphere.

  According to the invention which concerns on Claim 15, the position of a warm air fan and a blower outlet can be set according to the installation position of a warmer.

  According to the sixteenth aspect of the present invention, hot air can be utilized to the maximum by the second radiator.

  According to the invention which concerns on Claim 17, continuous operation of a warmer is enabled by discharging | emitting the ash produced | generated by combustion of RPF.

  According to the invention of claim 18, continuous combustion of RPF in the hot stove can be performed reliably.

  According to the nineteenth aspect of the present invention, the amount of combustion air supplied to the hot stove can be adjusted by the blower fan. For example, the amount of combustion air supplied can be increased and the RPF can be completely burned at the optimum temperature. It is possible to accurately control the temperature of hot air and accurately control the temperature of hot air that is blown out.

  According to the invention which concerns on Claim 20, a small hot stove can be accommodated in the housing | casing of a warmer, size reduction of a warmer can be achieved, and also high temperature hot air can be provided at low cost.

  According to the invention which concerns on Claim 21, the temperature control in the house connected so that a heating path and a circulation path may be formed can be performed, for example.

  According to the invention of claim 22, the temperature of the warmer can be adjusted accurately.

  Hereinafter, the present invention will be described based on the embodiments shown in FIGS.

1 to 4 show a first embodiment of a hot stove according to the present invention, FIG. 1 is an external perspective view of the hot stove, FIG. 2 is a top view of FIG. 1, and FIG. FIG. 4 is a cross-sectional view taken along the line BB in FIG. 3.

  Reference numeral 100 denotes a furnace body of a hot stove disposed in a cylindrical shape formed in a cylindrical shape, and an upper furnace body portion 101 and a lower furnace body portion 102 are configured by a vertically divided structure, and are formed on a lower surface of the upper furnace body portion 101. The upper furnace body part 101 and the lower furnace body part 102 are integrally coupled by fastening the provided flange part 101a and the flange part 102a provided on the lower surface of the lower furnace body part 102 with bolts and nuts (not shown). is doing. The upper furnace body portion 101 and the lower furnace body portion 102 have a structure in which a heat-resistant layer made of a heat-resistant member is provided inside, for example, an iron outer plate member.

  The furnace body 100 is provided with an RPF combustion section 103 for burning RPF in the middle in the vertical direction, and the furnace body 100 is partitioned into two upper and lower chambers 100a and 100b with the RPF combustion section 103 as a boundary. is doing. The upper section chamber 100a in the furnace body partitioned by the RPF combustion section 103 is used as the RPF combustion chamber.

  The RPF combustion unit 103 includes an inverted frustoconical RPF cradle 104 and a grate 105 disposed below the RPF cradle 104. A lower opening of the RPF cradle 104 is formed below the RPF cradle 104. The grate guide members 106 are arranged opposite to each other across the 104a, and the grate 105 is supported by the pair of grate guide members 106 slidably along the horizontal direction. As shown in FIG. 4, the pair of grate guide members 106 are attached to the outer surface side of the RPF cradle 104 along the direction indicated by the arrow C, and the grate 105 is slidable in the direction of the arrow C. Yes.

  In the present embodiment, a flange 104b is formed at the upper end opening edge of the RPF pedestal 104, and the flange 104b is placed on the flange 102a of the lower furnace body portion 102, whereby the RPF cradle 104 supporting the grate 105 is supported. Positioning is performed. That is, in the present embodiment, the inside of the upper furnace body portion 101 is an RPF combustion chamber which is the upper section chamber 100a. The RPF cradle 104 is fixed by fastening the upper furnace body 101 and the lower furnace body 102 with bolts and nuts as described above.

  Combustion air is supplied into the furnace body 100 by the combustion air supply unit, and the RPF is combusted. The combustion air supply unit is provided with a belt-like injection unit 107 for injecting combustion air with a long strip-like width in the vertical direction in the upper furnace body portion 101 which is an RPF combustion chamber, and this belt-like injection unit 107 is arranged in the circumferential direction. Are provided at intervals (in this embodiment, four locations at regular intervals). The belt-like injection unit 107 is configured to be arranged in the vertical and horizontal directions so as to entirely cover a large number of air nozzle units 107a. And the nozzle cap 108 which covers the air nozzle part 107a provided in the matrix form on the outer plate of the upper furnace body part 101 is attached.

  A combustion air distribution box 109 for a belt-like injection unit is provided at the top of the upper furnace body 101, and branch pipes 110 are connected from the combustion air distribution box 109 to the nozzle caps 108, respectively. A combustion air supply pipe 111 for the belt-like injection unit is connected to the box 109. The combustion air supply pipe 111 is connected to, for example, a combustion air supply source 5 (including a blower fan 5c and an air tank 5b for storing compressed air from the blower fan 5c) shown in FIG. Supply to combustion air distribution box 109. Combustion air is supplied from the combustion air distribution box 109 to the strip-shaped injection unit 107 via the branch pipes 110, and combustion air is supplied from the air nozzle units 107a constituting the strip-shaped injection unit 107 into the RPF combustion chamber. The

  As the amount of combustion air per unit time supplied into the combustion chamber increases, the combustion of the RPF is promoted to increase the combustion temperature, and the hot air that is the exhaust gas can be discharged at a high temperature. Hazardous gas emissions can be reduced. In order to increase the amount of combustion air per unit time, for example, the discharge pressure of the combustion air may be increased. In this case, the RPF on the grate 105 of the RPF combustion unit 103 is blown away. Moreover, if many air nozzles are provided along the circumferential direction of the furnace peripheral wall, the strength of the furnace body decreases. However, as in the present embodiment, by using a belt-like jet section that is long in the vertical direction, a sufficient combustion air flow rate can be ensured and the strength of the furnace body can be sufficiently ensured.

  An exhaust port 112 for exhaust gas (hot air) is formed in a part of the upper peripheral wall portion of the upper furnace body portion 101 in the circumferential direction, and the hot air duct 113 is connected to the outer periphery of the upper furnace body portion 101 so as to cover the exhaust port 112. It is attached to. A hot air duct 113 is disposed on one side of the grate 105 in the sliding direction C, and an RPF supply opening 114 for supplying RPF onto the grate 105 from the outside of the furnace is formed on the opposite side of the hot air duct 113. . An RPF supply duct 115 is attached to the RPF supply opening 114 outside the upper furnace body 101.

  The RPF supply duct 115 is inclined with the RPF supply opening 114 as a lower end, and the inclined upper end of the RPF supply duct 115 is connected to, for example, the conveyance end portion of the screw conveyor 2A of the RPF supply device 2 shown in FIG. The RPF can be continuously supplied from the RPF supply device 2 through the RPF supply duct 115 onto the grate 105 of the furnace body 100. Since the RPF receiver 104 is disposed above the grate 105, the RPF supplied from the RPF supply duct 115 accumulates in the RPF receiver 104.

  When the RPF deposited on the grate 105 is first ignited in the RPF receiver 104, the RPF can be continuously burned by the continuous supply of the RPF. For example, the supply amount of the RPF is adjusted. Accordingly, the combustion temperature of RPF, that is, the temperature of hot air can be adjusted.

  In this embodiment, for example, an igniter (not shown) that emits a flame from the tip of an elongated cylindrical burner using propane gas or kerosene as fuel is inserted to ignite the RPF deposited on the grate 105. Yes. A burner insertion pipe 116 is inclinedly arranged on the furnace peripheral wall of the upper furnace body 101, and the burner portion of the ignition device is inserted into the burner insertion pipe 116. The ignition device is fixed with the burner portion inserted into the burner insertion tube 116.

  The RPF burned on the grate 105 becomes ash and falls from between the grids, but as the RPF burns, the ash accumulates on the grate 105 and the ash becomes difficult to fall from the grid. For this reason, the ash is forcibly dropped by sliding (vibrating) the grate 105 in the horizontal direction. On the furnace peripheral wall of the lower furnace body section 102, an operation rod charging pipe 117 for inserting a grate operating rod (not shown) from the outside of the furnace at the same height as the grate 105 is leveled with an exhaust duct 113. Located on the opposite side. The grate operating rod is connected to the grate 105 via a connecting pin (not shown), for example, and reciprocates with respect to the operating rod charging pipe 117 to vibrate the grate 105 and incinerate the grate 105. Drop the ash. The grate operating rod may be reciprocated in the horizontal direction by manual operation from outside the furnace, or may be mechanically reciprocated using a crank mechanism or the like.

  The lower part of the lower furnace body part 102 constitutes an ash storage part 118, for example, an ash storage box (not shown) is disposed, and the furnace cover 119 is opened to allow the ash storage box to be taken out.

  In addition to the belt-like injection unit 107 that supplies combustion air into the RPF combustion chamber, the combustion air supply unit is used for combustion in the RPF that penetrates the RPF receiver 104 in the horizontal direction and is deposited above the grate 105. A combustion air nozzle 120 for supplying air and a combustion air supply hole 121 for supplying combustion air into the lower section chamber 100b are provided. Two combustion air nozzles 120 are attached so as to face each other in the direction orthogonal to the arrow C direction, and these two combustion air nozzles 120 are arranged to be shifted from each other in the horizontal direction. Thus, since the combustion air from the two combustion air nozzles 120 is directly supplied into the accumulated RPF, combustion of the RPF can be promoted.

  By supplying combustion air to the lower compartment 100b from the combustion air supply hole 121 provided in the furnace peripheral wall of the lower furnace body 102, the lower compartment 100b is transferred from below the grate 105 to the RPF on the grate 105. Combustion air is supplied from the inside, and combustion of the RPF on the grate 105 can be promoted. Further, unburned gas of RPF enters the lower section chamber 100b through the grate 105. Since the unburned gas of the RPF is high in calories, it can be burned when directly fed into the RPF combustion chamber, the combustion temperature in the RPF combustion chamber can be raised, and the RPF can be burned without waste.

  Therefore, in the present embodiment, the lower communication port 122 is provided in the furnace peripheral wall of the lower furnace body unit 102, the upper communication port 123 is provided in the furnace peripheral wall of the upper furnace body unit 101, and the lower communication port 122 and the upper communication port 123 are provided. The lower section chamber 100b and the RPF combustion chamber 100a are connected with each other by a communication pipe 124 provided outside the furnace. The lower communication port 122 is provided at a lower position as close as possible to the grate 105 so that unburned gas is led to the lower communication port 122 in a high concentration state. Further, the upper communication port 123 is provided at substantially the same height as the lower position of the belt-like injection unit 107. The communication pipe 124 has a vertically divided structure with a flange, and the upper and lower portions of the communication pipe 124 are in contact with the upper furnace body 101 and the lower furnace body 102 joined together.

  The lower compartment 100b is in a positive pressure state due to the supply of combustion air from the combustion air supply hole 121, and due to the chimney effect, the unburned gas passes through the communication pipe 124 from the lower communication port 122 and the upper communication port 123. To be introduced into the RPF combustion chamber.

  The two combustion air nozzles 120 are connected to air supply pipes 125 and 126, respectively, and the combustion air supply hole 121 is connected to an air supply pipe 127. These air supply pipes 125, 126, and 127 are shown in FIG. It is connected to the air tank 5a of the combustion air supply source 5 shown.

  The hot stove having the above-described configuration can continuously burn RPF on the grate 105 by supplying a necessary amount of RPF onto the grate 105 from outside the RPF supply duct 115. Then, supply of combustion air from the plurality of belt-like injection units 107 into the RPF combustion chamber, direct supply of combustion air into the RPF accumulated on the grate 105 by the two combustion air nozzles 120, and combustion The combustion air supplied from the air supply hole 121 into the lower compartment 100b and directed to the RPF combustion chamber through the grate 105 burns the RPF at a high temperature, and discharges hot hot air from the hot air duct 113 to the outside of the furnace. be able to. Further, by supplying unburned gas directly from the lower compartment 100b to the RPF combustion chamber, it is possible to burn the RPF without waste and further increase the combustion temperature.

  As an application mode using hot air generated by a hot air furnace, hot air is blown directly into a rotating cylinder of an internal combustion rotary kiln, and a heated object (dried object) in the rotating cylinder is heated and dried. it can.

  The hot stove can also be used for a warmer that supplies hot air generated by the hot stove using a heat exchanger or the like to supply hot air into the house.

Second Embodiment FIGS. 5 to 7 show a second embodiment of the present invention. The second embodiment relates to a warmer using the hot stove shown in the first embodiment.

  FIG. 5 is a top view of the warmer, and shows a state in which the top plate of the warmer casing is removed for easy explanation. FIG. 6 is a front view of FIG. 5 and shows a state in which the side plate on the front side of the heater case is removed for easy explanation. FIG. 7 is a control block diagram showing an RPF automatic supply system.

  5 and 6, the warmer 1 of the present embodiment combusts the RPF of fuel in a warmer casing 10 of a sealed structure formed in a rectangular parallelepiped shape, and generates generated combustion gas (hot air) in a furnace. A hot stove 20 to be discharged to the outside, a cyclone type dust remover 30 as a set of two, a first radiator 40 and a second radiator 50 are arranged.

  Also, in the warmer casing 10, the hot air generated in the hot stove 20 is supplied to the two dust removers 30 via the first hot air duct section 61 and is cleaned from the two dust removers 30. The heated hot air is supplied to the first radiator 40 via the second hot air duct section 62, and the first heat radiated hot air discharged from the first radiator 40 is supplied to the second radiator 40 via the third hot air duct section 63. The heatsink 50 is supplied. The exhaust side of the second radiator 50 is connected to an exhaust gas fan 70 disposed outside the heater housing 10 via an external connection pipe 64, and the secondary heat exhausted exhaust gas discharged from the second radiator 50. Is exhausted from the exhaust gas pipe 65 to the atmosphere.

  The first hot air duct section 61 branches the branch duct sections 61F and 61B in the front-rear direction (vertical direction in FIG. 5) with respect to the main duct section 61a and supplies hot air to each dust remover 30.

  FIG. 6 is a front view of FIG. 5, but FIG. 5 shows the location of the RPF supply device 2 to be described later, the positional relationship between the hot air fan 71 to be described later and the outlet for discharging the air in the house, and the like. In the case where the lower side of the heater case 10 shown is arranged facing the house side, the lower side of the heater case 10 in FIG. The front side and the back side are not necessarily fixed. In the present embodiment, the lower side of the heater case 10 shown in FIG. 5 will be described as the front side.

  5 and 6, an air inlet 10a is formed on the top plate 11C constituting the warmer casing 10 on the left side (hereinafter referred to as RPF supply side) of the warmer casing 10 in the figure. A warm air fan 71 is mounted on the air inlet 10 a so that air is sucked into the heater case 10 from the outside of the heater case 10. Specifically, the suction side (the upper side in FIG. 6) of the warm air fan 71 is connected to an exhaust port provided in a house (not shown) via, for example, an exhaust duct (not shown), and It is introduced into the warmer casing 10.

  5 and 6, a warm air outlet 10b is formed on the right side (hereinafter, referred to as a warm air outlet side) side wall 11R in the figure constituting the warming machine casing 10, and the periphery of the hot air outlet 10b is formed. One end of the flexible tube FT is connected to an annular mounting plate 10c fixed so as to surround the tube. The other end of the flexible tube FT is connected to a hot air introduction port provided in a house (not shown), and the warm air in the heater case 10 blown by the warm air fan 71 is passed through the flexible tube FT. Through the house. That is, in the present embodiment, the air in the house is circulated by the heater case 10 to heat the inside of the house to a desired temperature.

  In the warmer casing 10, the hot stove 20 is disposed near the side wall 11L on the RPF supply side of the warmer casing 10, and the first radiator 40 is disposed on the warm air blowing side. And two first dust removers 30 are juxtaposed in the front-rear direction (vertical direction in the figure). Further, the second radiator 50 is disposed on the back side of the hot stove 20.

  The first hot air duct section 61 is disposed above the warmer casing 10, and similarly, the second hot air duct section 62 is also disposed above the second hot air duct section 62. The hot air is collected from the branch pipe section 62 a to the collecting pipe section 62 b, and hot air is supplied into the first radiator 40 from the top of the first radiator 40.

  In the dust remover 30, high-speed hot air flows from the branch pipe sections 61F and 61B whose inner diameter is smaller than the main pipe 61a to the hot air introduction / discharge section 32 disposed on the upper part of the inverted conical cylinder section 31. The hot air is swirled in the hot air introduction / discharge part 32 by being introduced along the tangential direction from the air, and dust such as incinerated ash contained in the hot air is disposed in the lower part of the cylindrical part 31 via the cylindrical part 31. It falls and collected in the ash storage part 33. The ash storage part 33 of each dust remover 30 is connected to an ash discharge duct 34 that penetrates the front wall 11F and the rear wall 11B that constitute the warmer casing 10, and a lid 34 a is attached from the outside of the warmer casing 10. The dust in the ash storage part 33 can be taken out through the provided ash discharge duct 34.

  The first radiator 40 is thin in the longitudinal direction (the direction along the hot air blowing side and the RPF supply side) of the rectangular parallelepiped warmer casing 10 and extends long along the short side direction. 10 is formed in a sealed container having a height close to the top plate 11C, and the internal space is attached in an inclined posture with the baffle plates 42 being staggered in the vertical direction from the side plates 41R and 41L in the longitudinal direction. When the hot air supplied from the upper part flows downward, these baffle plates 42 are heated and guided to the third hot air duct part 63 from the lower discharge port.

  In the first radiator 40, the side plates 41R and 41L in the longitudinal direction and the side plates 41F and 41B in the longitudinal direction are directly heated by the hot air flowing in the internal space, and the side plates in the longitudinal direction via the baffle plate 42. 41R and 41L are heated and radiated from these side plates 41R, 41L, 41F, and 41B. Moreover, the radiation fin 43 is attached to the outer surface side of these side plates 41R, 41L, 41F, 41B to further increase the radiation area.

  The ash storage part 44 is provided also in the lower part of the 1st heat radiator 40, The ash discharge duct 45 provided with the lid | cover 45a which each penetrates each side wall 11F and 11B before and behind the warmer housing | casing 10 in the ash storage part 44 By connecting, the ash discharging operation from the front side or the rear side of the warmer casing 10 is enabled.

  The second radiator 50 has, for example, a substantially cubic shape having the same structure as that of the first radiator 40, discharges the primary heat-radiated hot air introduced from the lower part from the upper part, and the exhaust gas fan 70 via the external connection pipe 64. It is discharged from the exhaust gas pipe 65 to the outside of the housing. The exhaust gas fan 70 is mounted on the auxiliary machine base 3 disposed on the outside of the side wall 11L on the RPF supply side of the heater case 10, for example. Note that an ash storage part (not shown) is provided at the bottom of the second radiator 50, and this ash storage part is connected to an ash discharge duct 51 provided with a lid 51a penetrating the rear side wall 11B.

  Next, the hot stove 20 will be described.

  In the hot stove 20, an exhaust port 21a for discharging hot air to the first hot air duct section 61 is formed in the upper part of the heat-resistant furnace body 21 formed in a cylindrical shape, and the ash storage part 22 is arranged in the lowermost part. ing. Above the ash reservoir 22, a grate 23 placed for burning the RPF is disposed so as to be movable in the horizontal direction, for example. The grate 23 is disposed at a slight distance from the upper end of the ash storage unit 22, and the grate 23 burned on the grate 23 is moved downward by reciprocating (vibrating) the grate 23 in the horizontal direction. It is dropped into the ash storage part 22 to ensure continuous supply of RPF onto the grate 23 and sustaining combustion.

  The ash storage unit 22 is connected to an ash discharge duct 24 having a lid 24 a penetrating the front side wall 11 </ b> F, and ash that has fallen into the ash storage unit 22 from the outside of the warmer body 10 can be discharged through the ash discharge duct 24. I am doing so. In addition, since a large amount of ash falls in the ash storage part 22 of the hot stove 20 compared with the dust remover 30 and the 1st heat radiator 40, you may make it scrape the ash in the ash storage part 22 manually. However, the ash discharge duct 24 has a screw conveyor structure, and when it is detected that a certain amount of ash is stored at regular time intervals or in the ash storage unit 22, the screw conveyor is driven, for example, You may enable it to discharge automatically in the ash storage box installed outside. The detection that a predetermined amount of ash is stored in the ash storage unit 22 may be provided on the ash storage unit 22, or may be detected based on the supply amount of RPF.

  In the present embodiment, a vibration generator (for example, constituted by a crank mechanism) 4 disposed outside the side wall 11L on the RPF supply side of the warmer casing 10 is connected to the grate 23 via the operation rod 23a. The grate 23 is vibrated in the horizontal direction.

  On the other hand, as shown in FIG. 4, two combustion air nozzles 25 are disposed through the RPF receiver 21 b disposed above the grate 23, and the inner periphery of the furnace wall is positioned above the grate 23. A plurality of, for example, four, equidistantly disposed belt-like injection portions 26 for injecting combustion air into the furnace are disposed on the wall surface. The air ejection part 26 has a configuration in which a plurality of ejection nozzles 26a are arranged in a matrix (vertical direction and circumferential direction) in a predetermined region in the vertical and horizontal directions. The plurality of injection nozzles 26a arranged in each air ejection portion 26 are opened such that the nozzle rear end faces the outer peripheral surface of the furnace wall, and the nozzle rear ends of the plurality of injection nozzles 26a are provided as nozzle caps 26b. So that it is covered in a sealed state.

  Combustion air from the blower fan 5c of the combustion air supply source 5 is supplied to the nozzle cap 26b and the combustion air nozzle 25 by the blower pipe 5b through the air tank 5a, and pulsation is generated from the air tank 5a. Since the combustion air having a constant pressure is injected into the furnace body without being heated, the combustion of the RPF becomes constant, and the hot air generated in the furnace body is supplied into the first hot air duct 61 at a constant flow rate without causing pulsation. . Although not shown, like the hot stove shown in the first embodiment, a combustion air supply hole and a communication port are provided below and above the grate 23 so as to sandwich the grate 23, and both of these communication ports are provided. Are connected via a communication pipe, and unburned gas is supplied above the grate 23.

  The blower fan 5c is disposed outside the side wall 11L on the RPF supply side of the warmer body 10.

  In addition, an inclined lower end of an RPF supply duct 27 penetrating the side wall 11L on the RPF supply side in an inclined state is attached to the furnace wall of the furnace body 21 so that the lower end of the RPF supply duct 27 faces the inside of the furnace. RPF is thrown into the upper end of the slope. In the furnace body 21, an RPF receiving body 21 b formed in an inverted frustoconical shape is provided immediately above the grate 23, and the RPF dropped and supplied into the furnace body 21 through the RPF supply duct 27 is It is put inside the RPF receiver 21 b and placed on the grate 23.

  Further, the furnace wall 21 is attached to the furnace wall so that the inclined lower end of the burner insertion tube 28 that penetrates the front side wall 11F of the warmer body 10 faces the inside of the furnace, and the inclination that penetrates the front side wall 11F to the outside of the main body. The ignition device 6 is attached to the opening at the upper end. The burner insertion pipe 28 is attached so that the lower end of the burner insertion pipe 28 faces the RPF mounted on the grate 23. At the start of operation, the flame from the ignition device 6 passes through the burner insertion pipe 28 and is on the grate 23. Ignite the RPF.

  When the RPF on the grate 23 is ignited, the combustion of the ignition device 6 is stopped, and RPF is supplied from the RPF supply device 2 to the grate 23 through the RPF supply duct 27 in order to continue the combustion of the RPF.

  The RPF supply device 2 includes an RPF conveying screw conveyor 2A that is inclined and an RPF storage housing 2B that can store RPF for one day or several days. The inside of the RPF storage housing 2B has a hopper portion 2C having a lower portion formed in a hopper shape, and the inclined lower end of the screw conveyor 2A is inserted to the lower hopper portion 2C.

  In the screw conveyor 2A, a screw 2E is rotatably disposed in a cylindrical casing 2D. The casing 2D has an opening 2F having an upper opening in the RPF storage housing 2B. The RPF in the RPF storage housing 2B is supplied into the casing 2D through the opening 2F, and is inclined upward by a rotating screw 2E. The RPF is continuously conveyed to the RPF supply duct 27 at the upper end of the slope.

  As a drive mechanism for the screw conveyor 2A, a motor (not shown), a speed reducer (not shown) provided in a machine room 2G separated from the hopper 2C, which is an RPF storage chamber, by a partition wall 2I in the RPF storage case 2B. The structure which drives the gear 2H fixed to the inclination lower end part of 2 A of screw conveyors is mentioned as an example. Although the screw conveyor 2A is inclined, it may be horizontally arranged.

  In the present embodiment, the hot stove 20, the dust remover 30, the first radiator 40, the second radiator 50, and the first hot air duct portion 61 to the third hot air duct portion disposed in the heater case 10. Reference numeral 63 denotes a sealed structure with respect to the heater case 10 so that hot air passing through the inside does not leak into the heater case 10. Therefore, the inside of the warmer casing 10 is not only the heat radiation by the first radiator 40 and the second radiator 50 but also the heat dissipated from the hot stove 20, the first hot air duct section 61 to the third hot air duct. Since it is also warmed by the heat radiated from the part 63 and the heat radiated from the dust remover 30, it can be said that the heater case 10 itself has a function as a heat exchanger.

  Further, the open ends of the ash discharge ducts 24, 34, 45, 51 provided in the hot stove 20, dust remover 30, first radiator 40, and second radiator 50 are closed by lids 24a, 34a, 45a, 51a. The hot air is prevented from leaking out.

  The drive control operation of the screw conveyor 2A, the blower fan 5, the hot air fan 71, and the exhaust gas fan 70 will be described below with reference to FIG.

  In FIG. 7, the drive motor 2M of the screw conveyor 2A, the drive motor 5M of the blower fan 5, the drive motor 71M of the hot air fan 71, and the drive motor 70M of the exhaust gas fan 70 are driven and controlled by the control device 7. The controller 7 receives temperature information from a temperature sensor S that measures the temperature in the agricultural house H that is heated by the warm air supplied from the warmer of the present embodiment.

  The control device 7 includes a drive unit 7A, a temperature setting unit 7B, and a timer 7C. The heater is started by turning on the operation switch, the timer 7C is started, and the heater is operated until the set timer time ends. When the operation switch is turned on, the drive unit 7A drives the drive motor 5M of the blower fan 5, the drive motor 71M of the hot air fan 71, and the drive motor 70M of the exhaust gas fan 70, respectively, and the combustion air in the furnace body 21 In addition, the exhaust gas system can be exhausted. Further, the drive motor 71M of the hot air fan 71 is driven to circulate the air in the house H through the heater case 10. The set temperature of the temperature setting unit 7B and the timer time of the timer 7C can be changed by operating the operation member while watching the set temperature displayed on the display unit, for example.

  At the start of the operation of the warmer, the drive motor 2M of the screw conveyor 2A is driven to supply an amount of RPF necessary for initial combustion onto the grate 23, and the RPF on the grate 23 using the ignition device 6 And RPF that is automatically supplied thereafter is combusted using this as a seed fire.

  When the temperature of the hot air generated in the furnace body 21 increases as the RPF combustion proceeds, the temperature is increased by the heat radiated from the first radiator 40 and the second radiator 50 disposed in the heater case 10. Not only the temperature in the warming machine casing 10 rises, but also heating is performed by heat emitted from the furnace body 21, the first hot air duct section 61, the second hot air duct section 62, and the two dust removers 30. The temperature inside the machine casing 10 rises. That is, it can be said that the warmer casing 10 itself has a function as a heat exchanger. The warm air in the warmer housing 10 is forced to flow from the top plate 11C on the RPF supply side toward the hot air blowing side on the opposite side by the warm air fan 71, and the warm air in the warmer housing 10 is heated. The heat obtained by heat exchange with the first radiator 40 and the second radiator 50 becomes hot air and is supplied into the house H from the hot air outlet 10b through the flexible tube FT.

  Then, the air in the house H is supplied to the hot air fan 71 via the duct D and circulates so that the temperature in the house H rises, and the temperature sensor S starts to be controlled at a set temperature or a predetermined temperature lower than the set temperature. When detecting that the temperature has been reached, the control device 7 reduces the drive speed of the screw conveyor 2A to reduce the supply of RPF and lower the combustion temperature. Thereby, the temperature of the hot air generated in the hot stove 20 is lowered, and the temperature in the house H can be maintained at the set temperature. In this case, in addition to the low speed control of the screw conveyor 2A, the combustion temperature of the RPF can be lowered by reducing the blown amount of the blower fan 4, and the temperature control can be performed more accurately. Furthermore, the temperature control in the house H can be performed more accurately by adjusting the exhaust air volume of the exhaust gas fan 70. At that time, the air flow of the hot air fan 71 is kept constant, and the hot air outlet temperature (blowing temperature) is adjusted by controlling the combustion temperature. In short, in addition to the low speed control of the screw conveyor 2A, the air flow rate of both the blower fan 4 and the exhaust fan 70 may be adjusted, or one of the air flow rates may be adjusted.

  In addition, although said description showed the case where the temperature of the hot air from the hot stove 20 was reduced, when raising the temperature of a hot air, the conveyance speed of the screw conveyor 2A can be made quick, and in that case The air flow rate of the fan 4 and the air flow rate of the exhaust gas fan 70 may be increased. In addition to the increase in the conveying speed of the screw conveyor 2A, either the air flow rate of the blower fan 4 or the air flow rate of the exhaust gas fan 70 May be increased.

  Further, when the upper limit temperature that is higher by a predetermined value than the set temperature is exceeded, the drive of the screw conveyor 2A is stopped to stop the combustion of the RPF. Even if the supply of the RPF is stopped, combustion by the remaining RPF continues for a while. In this case, by stopping the driving of the hot air fan 71, the temperature rise in the house H is suppressed and the set temperature is reached. Maintained. And since the combustion of the remaining RPF is continuing in the hot stove 20, the temperature in the warmer housing | casing 10 rises and heat storage is carried out. The driving of the warm air fan 71 may be continued depending on the temperature condition in the house.

  When the room temperature in the house H becomes lower than the set temperature, the drive unit 7A of the control device 7 drives the drive motor 5M of the blower fan 5, the drive motor 71M of the warm air fan 71, and the drive motor 70M of the exhaust gas fan 70, respectively. While the RPF is ready for combustion, warm air stored in the warmer casing 10 is supplied into the house H. Further, the drive unit 7A drives the motor 2M of the screw conveyor 2A to start automatic supply of RPF. When the temperature inside the furnace body 21 is measured by the furnace body temperature sensor and it is determined that the RPF that has been burned as a seed fire during the operation stop is burned out, the ignition device 6 performs reignition.

  Moreover, although the warm air blowing port 10b is provided in the side wall 11R of the rectangular parallelepiped warming machine housing 10, it may be provided in the side wall 11F or the side wall 11B. Furthermore, although the air inlet 10a is provided in the top plate 11C of the warmer casing 10, it may be provided in the side wall 11F, 11B, 11R where the warm air outlet 10b is not provided. In this case, the air introduction port 10a and the warm air blowing port 10b can be provided at arbitrary positions according to the arrangement position of the warmer, and the air introduction port 10a and the warm air blowing bubble according to the installation position of the heating machine. The mouth 10b can be provided at a suitable position.

Third Embodiment FIGS. 8 to 10 show a third embodiment of the present invention. This 3rd Embodiment is related with the warmer provided with the hot air furnace which burns RPF and generates a hot air.

  8 is an external perspective view of the warmer, FIG. 9 is a longitudinal sectional view of a part of the warmer main body and the FRP supply device of FIG. 8, and FIG. 10 is a sectional view taken along arrows I-I of FIG.

  The warmer 201 using the RPF of the present embodiment as a fuel includes a warmer body 202 having a combustion chamber and a heat exchanger, and an RPF supply device that continuously supplies RPF to the combustion chamber of the warmer body 202. 203.

  The warming machine main body 202 is provided with a ceiling partition wall 205 in the upper part of a sealed case 204 formed in a rectangular parallelepiped shape, and a ventilation air chamber 206 is formed between the top plate of the sealed case 204 and the ceiling partition wall 205. Yes.

  A combustion chamber A, a combustion gas collecting chamber B, a heat exchange chamber C, and a combustion gas discharge chamber D are formed in order from one side end to the other side end below the air blowing air chamber 206 in the sealed case 204. Yes.

  In the combustion chamber A, a cone-shaped ash receiving furnace 211 is installed at the lower part, and a heat-resistant steel grate 212 is attached to the upper opening of the combustion chamber A. A heat-resistant wall 213 made of concrete is provided. The ceiling partition wall 205 is also provided with a heat resistant wall 214 in the upper part of the ash receiving furnace 211.

  A combustion gas circulation opening 213a is formed in the upper part of the heat-resistant wall 213 in contact with the combustion gas supply chamber B, and the high-temperature combustion gas in the combustion chamber A circulates in the combustion gas collecting chamber B.

  Above the grate 212, an inclined lower end of the RPF supply duct 215 provided at the upper end of the RPF supply device 203 faces, and the RPF 216 is dropped and supplied onto the grate 212 from the RPF supply duct 215. The RPF 216 on the grate 212 is ignited by an ignition burner 217 at the start of combustion, and lower air supplied upward from a lower air nozzle 218 provided at four locations on the peripheral surface of the ash receiving furnace 11 toward the grate 212. The upper air nozzle 219 located above the ash receiving furnace 211 is combusted by the upper air supplied downward to the grate 212, and the RPF dissolves on the grate 212 to generate combustion gas. Burns at the top of the grate. Therefore, the grate 212 itself has a lower temperature than the combustion temperature of about 1000 ° C.

  In the present embodiment, the number of the upper air nozzles 219 is one, the RPF supply duct 215 is formed in two forks, and the upper air nozzle 219 is passed between them. The upper air is also supplied into the RPF supply duct 215, and air is supplied from the lower end of the RPF supply duct 215 toward the grate 212. Specifically, an upper air nozzle 219 is connected to the upper air main pipe 220, and a branch pipe 221 branched from the upper air main pipe 220 is connected to the RPF supply duct 215. The upper combustion air introduction fan is connected.

  The RPF supplied onto the grate 212 is burned in a high temperature state by air blown from the vertical direction of the grate 212, and the surface is carbonized and completely burned without becoming a non-burning state, and becomes ash, It falls into the ash receiving furnace 211 from the hole of the grate 212.

  The bottom of the ash receiving furnace 211 is horizontally disposed along the width direction of the screw conveyor 222 for discharging ash, and the combustion ash dropped from the grate 212 is discharged to the outside by the screw conveyor 222.

  The four lower air nozzles 218 are respectively connected to an annular lower air main pipe 223, and are connected to a lower combustion air introduction fan (not shown) via a connection pipe 223a.

  The combustion gas collecting chamber B is divided into two chambers, a first compartment 231 and a second compartment 232, by a first baffle plate 230b suspended from the ceiling partition wall 205 so as to have a gap B1 with respect to the floor plate 230a. The first ward chamber 231 and the second ward chamber 232 communicate with each other through the gap B1.

  In the first compartment 231 on the combustion chamber A side, the high-temperature combustion gas that has entered from above through the combustion gas circulation opening 213a of the combustion chamber A is guided downward, and the combustion gas is directed below the second compartment 232 through the gap B1. Send it in. In the second compartment 232, the combustion gas moves the high-temperature combustion gas from below to above.

  The heat exchange chamber C disposed between the combustion gas collecting chamber B and the combustion gas discharge chamber D is partitioned by a pair of opposed partition walls 233 and 234, and the combustion gas is disposed between the pair of partition walls 233 and 234. A heat exchanger 236 is configured by attaching a plurality of cylindrical tubes 235 that are heat exchange pipes that circulate. Then, one end side of the plurality of cylindrical tubes 235 faces the combustion gas collecting chamber B, and the other end side faces the combustion gas discharge chamber D.

  The heat exchanger 236 uses a heat exchange pipe, but the present invention is not limited to this, and a duct structure with a baffle plate may be used as long as a necessary surface area can be secured.

  Like the combustion gas collection chamber B, the combustion gas discharge chamber D is divided into the first compartment 239 and the second compartment by the second baffle plate 238 suspended from the ceiling partition wall 205 so as to have a gap D1 with respect to the floor plate 237. The first compartment 239 and the second compartment 240 communicate with each other through the gap D1. The second compartment 240 communicates with the exhaust gas pipe 241 provided with the extraction fan 242, and the exhaust gas in the second compartment 240 is sucked by the extraction fan 242 to forcibly convert the combustion gas in the combustion chamber A into the combustion gas. The gas is introduced into the combustion gas discharge chamber D through the collection chamber B through the cylindrical tubes 235 of the heat exchanger 236. At that time, the combustion gas flowing in the combustion gas discharge chamber D is adjusted to a uniform flow without generating pulsation or the like, and is thus smoothly discharged outside the apparatus.

  The combustion gas collecting chamber B is configured to make the flow of the combustion gas uniform by making the flow path of the combustion gas longer by the first baffle plate 230b, thereby making the temperature distribution uniform, and the combustion gas in the second compartment 232 is transferred to each cylindrical tube. 235.

  A ventilation opening 243 facing the heat exchange chamber C is opened in the ceiling partition wall 205, and the air chamber 206 for blowing and the heat exchange chamber C are communicated with each other. Further, a warm air delivery opening 244 for sending warm air to a warm air supply duct (not shown) is formed on the side wall surface C2 of the warmer body 202 corresponding to the heat exchange chamber C. The house duct is attached to a duct attachment frame 245 provided around the hot air delivery opening 244.

  The top plate 204a of the sealed case 4 is provided with an air introduction device and an exhaust device that constitute air conditioning means, and the top plate 204a has an intake opening 204b for the air introduction device and an exhaust opening 204c for the exhaust device. Is formed, and an intake fan 246A of the air introduction device is attached to the intake opening 204b, and an exhaust fan 246B of the exhaust device is attached to the exhaust opening 204c.

  The intake fan 246A is connected to a house connection duct 247 connected to an exhaust port (not shown) provided in the upper part of the house that blows warm air through a branching duct 249 and an outside air intake duct 248 that takes in outside air. The house connection duct 247 is connected to one branch port of the branching duct 249 via the first shutter 250a that is electrically driven, and the outside air intake duct 248 is connected to the other branch port of the branching duct 49 via the second shutter 250b. It is connected to the.

  The exhaust fan 246B is connected to the exhaust opening 204c via the electrically driven third shutter 250c and is connected to the exhaust duct 251 to discharge the warm air in the heat exchange chamber C to the outside.

  The temperature inside the house to be heated is measured by the temperature sensor 256a, and the temperature information measured by the temperature sensor 256a is input to the ventilation controller 256b. The air flow controller 256b opens the first shutter 250a, closes the second shutter 250b and the third shutter 250c, puts the intake fan 246A into an operating state, and puts the exhaust fan 246B into a stopped state when the temperature does not reach the set temperature. (This operation state is referred to as a heating mode). By this heating mode operation, the heat exchange chamber C of the warmer and the house form a circulation path to raise the temperature in the house.

  When the temperature sensor 256a detects that the temperature in the house has reached the set temperature, the first shutter 250a is closed, the second shutter 250b and the third shutter 250c are opened, and both the intake fan 246A and the exhaust fan 246B are operated. State (this operation state is referred to as temperature maintenance mode).

  In the temperature maintenance mode, the first shutter 250a is closed and the circulation path to the inside of the house is cut off, and the second shutter 250b is opened and the air supply fan 246A is in an operating state. Outside air outside the house is supplied into the heat exchange chamber C to prevent overheating of the heat exchanger 236, while warm air in the combustion chamber B is forcibly exhausted from the exhaust duct 251 to the outside by the operation of the exhaust fan 246B. The supply of warm air in the heat exchange chamber C from the house duct to the house is stopped.

  Since the heating machine of the present invention uses RPF as the main fuel, when combustion is started and stopped at a set temperature, a time lag is generated due to the ignition time and the continued combustion of the unburned RPF at the time of extinguishing, like a heavy oil burner. Frequent on / off control is not possible.

  Therefore, in this embodiment, the ventilation controller 256b switches from the heating mode to the temperature maintenance mode when the set temperature is reached, closes the first shutter 250a to stop the circulation movement of the air in the house, and the exhaust fan 246B. In the operating state, the warm air in the heat exchange chamber C is forcibly exhausted outside the machine, and the supply of the warm air in the heat exchange chamber C from the house duct into the house is stopped, thereby preventing the house temperature from rising.

  Even in the temperature maintenance mode, since the RPF is burned in the combustion chamber A, the heat exchanger 236 is heated, the second shutter 250b is opened, and the intake fan 246 opens the heat exchange chamber from the intake duct 248. Cold air is supplied into C to prevent overheating of the heat exchange chamber C and the heat exchanger 236.

  When the temperature sensor 256a detects that the temperature in the house has dropped below the set value, the ventilation controller 256b switches from the temperature maintenance mode to the heating mode, stops the operation of the exhaust fan 246B, and moves the third shutter 250c. Close and stop the warm air in the heat exchange chamber C from being exhausted outside the machine. Further, when the mode is switched to the heating mode, the first shutter 250a is opened, the second shutter 250b is closed, the circulation path to the house is resumed, and the introduction of outside air into the heat exchange chamber C is stopped. Thereby, the temperature in the heat exchange chamber C rises, and warm air is supplied into the house through the house duct.

  The third shutter 250c is configured to be opened and closed by electric drive. However, the third shutter 250c is in a closed state when the exhaust fan 246B is stopped and the exhaust flow does not flow upward. When the exhaust flow flows upward while 246B is in an operating state, it may be configured to open by this exhaust flow.

  Further, the first shutter 250a, the second shutter 250b, and the third shutter 250c not only switch between the two positions of opening and closing, but also control the opening amount when opening to control the amount of air flowing for temperature control. ing.

  On the other hand, the RPF supply device 203 covers an endlessly rotating chain conveyor 252 inclined and covered with a cover member 253, and accommodates an RPF formed between spaced plates 252b erected at regular intervals on a flat plate portion 252a of the chain conveyor 252. Space 254 is sealed. A hopper 255 is provided on the inclined lower end side of the chain conveyor 252, RPF is supplied into the hopper 255, and RPF is further supplied from the hopper 255 into the RPF storage space 254. The chain conveyor 252 is intermittently driven to supply a required amount of RPF into the combustion chamber A through the RPF supply duct 215 in accordance with the combustion state of the RPF in the combustion chamber A.

  The supply of the RPF to the inside of the combustion chamber A is not limited to the chain conveyor, but may be a screw conveyor, and the combustion gas in the combustion chamber A and the pressurized air for combustion pass outside the machine through the conveyor. It is desirable if it can prevent exhaust.

  In the combustion chamber A, the upper air for combustion is supplied from the upper air nozzle 219 and the RPF supply duct 215 and the lower air is supplied from the lower air nozzle 218 to be in a positive pressure state. Since the inside of the chain conveyor 252 that is in communication is maintained in a sealed state by the separating plate 252b, the combustion gas in the combustion chamber A does not leak out through the RPF supply duct 215 and moves to the combustion gas collection chamber B. . In addition, since the exhaust gas in the combustion gas discharge chamber D is sucked out of the apparatus by the drawing fan 242 provided in the exhaust gas pipe 241, the combustion gas in the combustion chamber A is guided to the combustion gas collecting chamber B.

The external appearance perspective view of the hot stove which shows 1st Embodiment of this invention. The top view of FIG. The AA arrow longitudinal cross-sectional view of FIG. FIG. 4 is a cross-sectional view taken along the line B-B in FIG. 3. It is a top view of the warmer which shows 2nd Embodiment of this invention, and shows the state which removed the top plate of the warmer housing | casing for easy description. In the front view of FIG. 5, the state which removed the side plate of the front side of a heater housing | casing for easy description is shown. It is a control block diagram which shows the automatic supply system of RPF of the warmer shown in FIG. 5, FIG. The external appearance perspective view of the heating machine which shows 2nd Embodiment of this invention. The longitudinal cross-sectional view of a part of warmer main body and FRP supply apparatus of FIG. FIG. 10 is a cross-sectional view taken along the arrow I-I in FIG. 9.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Furnace body 101 Upper furnace body part 102 Lower furnace body part 101a, 102a Flange part 103 RPF combustion part 104 RPF cradle 104a Lower opening 104b Flange 105 Grate 106 Grate guide member 107 Strip injection part 107a Air nozzle part 108 Nozzle cap 109 Combustion air distribution box 110 Branch pipe 111 Combustion air supply pipe 112 Exhaust port 113 Hot air duct 114 RPF supply opening 115 RPF supply duct 116 Burner insertion pipe 117 Operation rod charging pipe 118 Ash storage part 119 Furnace 120 Combustion air Nozzle 121 Combustion air supply hole 122 Lower communication port 123 Upper communication port 124 Communication tube 125, 126, 127 Air supply tube D Duct H House S Temperature sensor FT Flexible tube 1 Heating machine 2 RPF supply device 2A For transporting RPF Screw conveyor B RPF storage housing 2C hopper 2D casing 2E screw 2F opening 2G machine room 2H gear 2I partition 2M screw conveyor 2A drive motor 3 auxiliary machine base 4 vibration generator 5 combustion air supply source 5a air tank 5b blower pipe 5c Blower fan 5M Drive motor 6 of blower fan 5 Ignition device 7 Control device 7A Drive unit 7B Temperature setting unit 7C Timer 10 Heater case 10a Air inlet 10b Hot air outlet 10c Attached plate 11R, 11L Side wall 11F Front wall 11B Rear wall
11C Top plate 20 Hot air furnace 21 Furnace body 21a Exhaust port 21b RPF receiver 22 Ash storage part 23 Grate 23a Connecting rod 24 Ash discharge duct 24a Lid 25 Lower air injection nozzle 26 Air injection part 26a Upper injection nozzle 26b Nozzle cover 27 RPF Supply duct 28 Burner insertion pipe 30 Dust remover 31 Tube part 32 Hot air introduction / discharge part 33 Ash storage part 34 Ash discharge duct 34a Lid 40 First radiator 41R, 41L, 41F, 41B Side plate 42 Baffle plate 43 Radiation fin 44 Ash storage Part 45 Ash discharge duct 45a Lid 50 Second radiator 51 Ash discharge duct 51a Lid 61 First hot air duct part 61a Main duct part 61F, 61B Branch duct part 62 Second hot air duct part 62a Branch duct part 62b Pipe part 63 Third hot air pipe part 64 External connection pipe 65 Exhaust gas pipe 70 Exhaust gas fan 70M Exhaust gas fan 70 drive motor 71 Suction fan (warm air fan)
71M Drive motor A of the hot air fan 71 Combustion chamber B Combustion gas collection chamber B1 Crevice C Heat exchange chamber D Combustion gas discharge chamber D1 Crevice 201 Heating machine 202 Heating machine body 203 RPF supply device 204 Sealed case 204a Top plate 204b Air Introduction opening 205 Ceiling partition wall 206 Blowing air chamber 211 Ash receiving furnace 212 Grate 213, 214 Heat-resistant wall 213a Combustion gas distribution opening 215 RPF supply duct 216 RPF
217 Ignition burner 218 Lower air nozzle 219 Upper air nozzle 220 Upper air main pipe 221 Branch pipe 222 Screw conveyor 223 Lower air main pipe 223a Connection pipe 230a Floor plate 230b First baffle plates 231 and 239 First section chambers 232 and 240 Second section Chamber 233, 234 Bulkhead 235 Cylindrical tube (heat exchange pipe)
236 Heat exchanger 237 Floor plate 238 Second baffle plate 241 Exhaust gas pipe 242 Extraction fan 243 Ventilation opening 244 Hot air delivery opening 245 Duct mounting frame 246A Intake fan 246B Exhaust fan 247 House connection duct 248 Outside air intake duct 249 Branch duct 251 Exhaust duct 250a 1st shutter 250b 2nd shutter 250c 3rd shutter 252 Chain conveyor 252a Flat plate part 252b Separation plate 253 Cover member 254 RPF accommodation space 255 Hopper

Claims (22)

A vertically arranged furnace body formed in a cylindrical shape;
An RPF combustion section that is disposed inside the furnace body, divides the furnace body into two upper and lower chambers, and the upper compartment is an RPF combustion chamber;
An RPF supply duct provided in the furnace body for supplying RPF from outside the furnace body to the RPF combustion section;
A hot air duct for exhausting hot air as combustion exhaust gas in the RPF combustion chamber to the outside of the furnace body;
A combustion air supply section for supplying combustion air into the furnace body;
With
The RPF combustion section includes a cylindrical RPF receiver having upper and lower ends opened, and a grate disposed on the lower end of the RPF receiver and on which the RPF is placed,
The combustion air supply section includes a plurality of strip-shaped injection sections arranged along the circumferential direction of a furnace peripheral wall for injecting combustion air into the RPF combustion chamber with a strip-shaped width that is long in the vertical direction, and the RPF combustion section A hot stove comprising: one or a plurality of combustion air nozzles extending to an RPF receiver; and a lower compartment air supply section for supplying combustion air into the lower compartment in the furnace body.   The unburned gas supply pipe for directly supplying unburned gas in the lower section chamber of the furnace body into the RPF combustion chamber is provided so as to connect the lower section chamber and the RPF combustion chamber. 1. A hot stove according to 1.   The hot stove according to claim 1 or 2, wherein the grate is slidable in a horizontal direction with respect to the RPF receptacle.   The hot stove according to claim 3, wherein the grate can be slid through a through hole provided in a furnace peripheral wall of the furnace body.   The hot stove according to any one of claims 1 to 4, wherein the belt-like injection unit constituting the combustion air supply unit is configured by arranging a large number of air nozzle portions in the vertical and horizontal directions.   The RPF receiving body constituting the RPF combustion part is formed in an inverted truncated cone shape, and a tip of a combustion air nozzle constituting the combustion air supply part is extended into a lower end opening. Item 6. A hot stove according to any one of Items 1 to 5.   The hot stove according to any one of claims 1 to 6, wherein the lower compartment of the furnace body is an ash storage section that stores RPF combustion ash that has fallen through the grate.   The hot stove according to any one of claims 1 to 7, wherein a plug tube into which an ignition device for igniting the RPF on the RPF combustion section is inserted is provided on a furnace peripheral wall of the furnace body.   9. The hot stove according to claim 1, wherein the RPF supply duct is connected to an RPF supply device capable of continuously supplying RPF in a storage tank in which RPF is stored. .   The said RPF supply apparatus has the RPF storage hopper which stores RPF, and the conveyance means of the sealing structure arrange | positioned between the said RPF supply duct and the lower part of the said RPF storage hopper from Claim 1 characterized by the above-mentioned. 9. The hot stove according to any one of 9 above.   A heating device connected to the hot air duct of the hot air furnace according to any one of claims 1 to 10, for heating an object to be heated in a hot air blowing casing to which hot air from the hot air duct is supplied.   The heating apparatus according to claim 11, wherein the hot air blowing casing is a rotary kiln. External air is supplied to the room through the air introduction port by a hot air fan, and the heater housing has a sealed structure that blows out the indoor air from the blowout port to the outside.
RPF housed in the warmer casing, supplied with combustion air from the combustion air supply unit into the furnace body, and supplied from outside the warmer casing onto the grate in the furnace body through the RPF supply duct A hot air furnace that generates hot air by burning
A hot air duct accommodated in the heater case for discharging hot air generated in the hot air furnace to the outside of the heater case;
A radiator that is connected to the hot air duct and that radiates the supplied hot air by heat exchange;
An RPF supply device disposed outside the heater case and continuously supplying RPF to the RPF supply duct;
Having at least
A warmer characterized in that air in the warmer casing heated by heat radiated from the radiator is blown out from the outlet.   The warmer according to claim 13, wherein a dust remover is connected to the hot air duct upstream of the radiator.   The hot stove is arranged on one side in the warmer casing formed in a rectangular parallelepiped shape, and the outlet is provided on any one of the other three side walls excluding the side wall on the one side where the hot stove is arranged. The air inlet is provided on the top plate of the warmer casing or on the side wall not provided with the outlet in the other three side walls, and the air in the warmer casing by the warm air fan is provided. The warming machine according to claim 13 or 14, wherein the flow is formed from the inlet to the outlet.   The radiator includes a first radiator connected in the middle of the hot air duct and a second radiator connected to a terminal portion of the hot air duct, and the first radiator is disposed on the one side wall side. The second radiator is disposed on the other side wall, and the first radiator and the second radiator are connected by a hot air duct disposed in the lower part of the heater case. The warming machine according to claim 15, wherein the exhaust gas discharged from the second radiator is discharged by an exhaust gas fan disposed outside the warming machine casing.   An ash storage part for storing combustion ash of RPF is provided at the lower part of the furnace body of the hot stove and the lower part of the radiator, and the ash storage part is connected to an ash discharge duct that communicates with the outside of the heater case. The heating machine according to any one of claims 13 to 16, wherein the heating machine is provided.   The warming furnace according to any one of claims 13 to 17, wherein the hot stove vibrates a grate on which the RPF is placed to drop ash.   The heating machine according to any one of claims 13 to 18, wherein a blower fan that supplies combustion air to a combustion air supply unit of the hot stove is disposed outside the heating machine casing.   The warm air furnace according to any one of claims 13 to 19, wherein the hot stove housed in the warmer casing is the hot air furnace according to any one of claims 1 to 12.   21. The warming machine according to claim 20, wherein the temperature of the hot air blown out from the outlet is adjusted by adjusting the conveying speed of the conveying means. In addition to adjusting the conveying speed of the conveying means, adjusting the temperature of the hot air blown from the outlet by adjusting both or any one of the blowing amount of the blowing fan and the blowing amount of the exhaust gas fan. The warming machine according to claim 21, characterized in that

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