JP6203526B2 - Renewable fuel fired hot air fan and its control method - Google Patents

Description

  The present invention relates to a renewable fuel-fired hot air fan and a control method thereof.

  Conventionally, for example, a heating system has been proposed that is applied to a house that grows crops and the like in a certain range of temperature environments (see, for example, Patent Document 1). Also, a wood pellet fired hot air machine using wood pellets as fuel has been proposed. Wood pellets are small solid fuels that are compression-molded from sawdust and by-products such as kana scrap. By using such wood pellets as fuel, it is possible to use unwanted materials such as sawdust and kana scrap as fuel, which is advantageous in terms of cost and environment (see Patent Document 2).

JP2011-2185A JP 2008-82567 A

  Here, when heating the inside of a house, a wood pellet hot air fan and an oil fired hot air fan may be used together. In this case, the oil fired hot air machine is used as a backup for the wood pellet fired hot air machine. That is, the set temperature of the oil fired hot air machine is set lower than the set temperature of the wood pellet fired hot air machine. As a result, when the wood pellet fired air blower is operated preferentially but the wood pellet fired air blower alone does not have sufficient heating capacity, or the wood pellet fired hot air blower cannot be operated for some reason, The wind machine is operated.

  However, the operation of the oil fired hot air blower corresponds to, for example, a case where the wood pellet hot air blower alone does not have sufficient heating capacity, and means that the temperature in the house decreases to the set temperature of the oil fired hot air blower. ing. That is, it cannot be avoided that the temperature in the house becomes low.

  Therefore, it is conceivable to increase the set temperature of the oil fired hot air fan within a range below the set temperature of the wood pellet hot air fan. Thereby, a temperature difference becomes small between the situation where only the wood pellet hot air fan operates and the situation where the oil fired hot air fan operates, and the house temperature can be made higher than in the above case.

  However, in the case of the above configuration, due to the relationship between the outside air temperature and the set temperature, even when heating is possible only by operating the wood pellet hot air fan, the temperature in the house due to the response delay of the wood pellet hot air fan The oil fired hot air fan may start operation due to undershoot. In such a case, the operation of the oil fired hot air blower may reduce the combustion amount of the wood pellet hot air blower or stop the operation, and the ideal priority operation of the wood pellet hot air blower can be realized. Can not.

  Note that this problem is not limited to the combined operation with the oil fired hot air fan, but is common to the combined operation with other hot air winders other than the oil fired gas (for example, the gas fired hot air fan). In the above description, the wood pellet fired hot air machine has been described as an example. However, the present invention is not limited to the wood pellet fired hot air machine, and the garbage fired hot air machine using garbage as fuel, the wood chip fired hot air machine using wood chips as fuel, and bio In a renewable fuel-fired hot air blower such as a biofuel-fired hot air blower that uses fuel as fuel, it is desirable to preferentially operate them, which is a common problem. In the above, the renewable fuel is a concept including not only wood pellet fuel but also garbage, wood chips, and biofuel (biomass ethanol, ethyl tertiary butyl ether, 2,5-dimethylfuran, etc.).

  The present invention has been made to solve such a conventional problem, and an object of the present invention is a regeneration that can be operated more preferentially in a combined operation with another hot air fan. An object is to provide a possible fuel-fired hot air fan and a control method thereof.

A renewable fuel-fired hot air fan of the present invention is a renewable fuel-fired hot air machine that uses heat generated by burning renewable fuel for room temperature control, and includes a room temperature sensor that detects room temperature, Control means for performing combustion control of the renewable fuel based on a signal and a preset temperature, and the control means is an operation indicating an operation state of another warm air fan that heats the same room It has an input part which inputs state information , and changes the combustion control according to operation state information inputted by the input part .

  According to this regenerative fuel tank warm air machine, the combustion control is changed according to the operating state of the other warm air fan that warms the same room. Combustion control can be performed to suppress a decrease in the amount of combustion of the hot air blower or stop of operation. As a result, it is possible to prevent the preferential operation of the renewable fuel-fired hot air fan from being hindered by the operation of the other hot air fan, and to operate more preferentially in the combined operation with the other hot air fan. it can.

  In this renewable fuel-fired hot air fan, it is preferable that the control means changes the combustion control by changing the set temperature higher when the operating load of the other hot air fan becomes higher.

  According to this renewable fuel-fired hot air fan, when the operation load of the other hot air fan becomes high, the set temperature is changed to be higher and the combustion control is changed. For this reason, the set temperature is increased in a situation where the operation load of the other hot air fan becomes high and the amount of combustion of the renewable fuel-fired hot air fan decreases or the operation is easily stopped. As a result, the regenerative fuel-fired hot air fan is controlled to operate more, and it is difficult for the combustion amount to decrease and the operation to stop. Therefore, it is possible to operate more preferentially in the combined operation with other warm air machines.

  Further, in this renewable fuel-fired hot air fan, the control means sets the set temperature as the first temperature when the other hot air fan is not operating, and sets the set temperature when the other hot air fan is operating. It is preferable to change the combustion control by setting the temperature to a second temperature higher than the first temperature.

  According to this renewable fuel-fired hot air fan, the set temperature is set to the first temperature when the other hot air fan is not operating, and the set temperature is higher than the first temperature when the other hot air fan is operating. Set to the second temperature. For this reason, in a situation where another hot air fan is operated and the amount of combustion of the renewable fuel-fired hot air fan is reduced or the operation is easily stopped, the set temperature is set to the second temperature higher than the first temperature. It becomes. As a result, the regenerative fuel-fired hot air fan is controlled to operate more, and it is difficult for the combustion amount to decrease and the operation to stop. Therefore, it is possible to operate more preferentially in the combined operation with other warm air machines.

  Further, in this renewable fuel-fired hot air fan, the control means waits for a lapse of a predetermined time from the stop of the operation of the other hot air fan when the operation is stopped from the state where the other hot air fan is operating. The preset temperature is preferably returned from the second temperature to the first temperature.

  According to this regenerative fuel-fired hot air fan, when the operation is stopped from the state in which the other hot air fan is operating, the set temperature is set to the second temperature after waiting for a predetermined time from the time when the other hot air fan is stopped. Return from temperature to first temperature. For this reason, without returning to the 1st temperature without waiting for predetermined time, the situation where a regenerative fuel-fired hot air fan stops combustion immediately does not arise, and the situation where another hot air fan starts operation again is prevented. be able to.

A control method for a regenerative fuel-fired hot air fan according to the present invention is a control method for a regenerative fuel-fired hot air fan that uses heat generated by burning a renewable fuel for room temperature control, from a room temperature sensor that detects room temperature. And a control step for performing combustion control of the renewable fuel on the basis of a preset temperature and a preset temperature, and in the control step, an operation indicating an operating state of another warm air fan that heats the same room State information is input, and the combustion control is changed according to the input operation state information .

  According to this control method for a regenerative fuel-fired hot air fan, the combustion control is changed according to the operating state of the other hot air fan that heats the same room. Combustion control can be performed to prevent the combustion amount of the possible fuel-fired hot air fan from decreasing or stopping operation. As a result, it is possible to prevent the preferential operation of the renewable fuel-fired hot air fan from being hindered by the operation of the other hot air fan, and to operate more preferentially in the combined operation with the other hot air fan. it can.

  According to the present invention, it is possible to provide a regenerative fuel-fired hot air fan that can be operated with higher priority in a combined operation with another hot air fan and a control method thereof.

It is a lineblock diagram showing an example of the heating system containing the wood pellet firewood warm air machine concerning this embodiment. It is a schematic block diagram of the wood pellet fired hot air machine which concerns on this embodiment. It is a block diagram which shows the wooden pellet firewood warm air machine which concerns on this embodiment. It is a figure which shows the displacement of the room temperature by the heating system which concerns on a 1st comparative example, and an operation state, Comprising: (a) shows the displacement of room temperature, (b) has shown the combustion state. It is a figure which shows the displacement of the room temperature by the heating system which concerns on a 2nd comparative example, and an operation state, Comprising: (a) shows the displacement of room temperature, (b) has shown the combustion state. It is a figure which shows the displacement and the driving | running state of room temperature by the heating system which concerns on this embodiment, Comprising: (a) shows the displacement of room temperature, (b) has shown the combustion state.

  Preferred embodiments of the present invention will be described below with reference to the drawings. However, the present invention is not limited to the following embodiments. Drawing 1 is a lineblock diagram showing an example of the heating system containing the wood pellet firewood warm air machine concerning this embodiment.

  As shown in FIG. 1, the heating system 100 includes a wood pellet fired hot air machine (renewable fuel fired hot air machine) 1, an oil fired hot air machine (other hot air machine) 2, and a duct 3. The wood pellet hot air blower 1 uses the heat generated by burning wood pellet fuel, which is a wood biomass fuel formed into pellets, for room temperature control in the house 4. The oil-fired hot air fan 2 uses heat generated by using oil as fuel for room temperature control in the house 4.

  The duct 3 takes in warm air from the respective hot air discharge ports (see reference numeral 21 described later) of the wood pellet hot air fan 1 and the oil fired hot air fan 2 and discharges the hot air into each section 4 a of the house 4. More specifically, the duct 3 includes a connection pipe 3a connected to the hot air discharge port and a branch pipe 3b branched from the connection pipe 3a, and discharges hot air from the branch pipe 3b to each section 4a.

  FIG. 2 is a schematic configuration diagram of the wood pellet fired hot air machine 1 according to the present embodiment. As shown in FIG. 2, the wood pellet hot air blower 1 burns wood pellet fuel supplied from a wood pellet tank installed outside the house 4. The wood pellet fuel is introduced into the combustor 9 in the wood pellet fired hot air machine 1 and combusted together with combustion air supplied from a blower (not shown) attached to the wood pellet fired hot air machine 1. ing.

  The combustor 9 burns wood pellet fuel, and is composed of, for example, an electric heater. The combustion exhaust gas generated by burning the wood pellet fuel reaches the chimney 13 from the furnace cylinder 11 in the wood pellet hot air blower 1 and is discharged from the chimney 13 to the outside of the house 4. The air in the house 4 is taken into the wood pellet hot air fan 1 from the two air intakes 19 provided with the blower 17 at the upper part of the wood pellet hot air fan 1 as indicated by an arrow 15, After being heated by exchanging heat with the tube 11 and the smoke pipe, the hot air discharge port 21 formed on the opposite side of the wood pellet hot air blower 1 is exhausted into the duct 3 to heat the house 4. It has become.

  Although the oil fired hot air fan 2 is different from the wood pellet fired hot air machine 1 in that oil is used as fuel, the other configurations are basically the same as those of the wood pellet fired hot air machine 1, Omitted.

  FIG. 3 is a block diagram showing the wood pellet fired hot air machine 1 according to the present embodiment. As shown in FIG. 3, the wood pellet fired hot air machine 1 according to the present embodiment includes a room temperature sensor 40 and a control device 50 in addition to the above configuration. The room temperature sensor 40 detects the room temperature in the house 4. The control device 50 includes a control unit (control means) 51, and the control unit 51 performs combustion control of the wood pellet fuel by the electric heater based on a signal from the room temperature sensor 40 and a preset temperature set in advance. The control device 50 is configured by a CPU (Central Processing Unit) or the like.

  Next, with reference to FIGS. 4-6, the heating system which concerns on a 1st and 2nd comparative example and the control method of the heating system 100 which concerns on this embodiment are demonstrated.

  4A and 4B are diagrams showing a room temperature displacement and an operating state by the heating system according to the first comparative example, in which FIG. 4A shows the room temperature displacement, and FIG. 4B shows the combustion state. In FIG. 4, T1 is a set temperature of the oil fired hot air fan according to the first comparative example, and T2 is a set temperature of the wood pellet hot air fan according to the first comparative example.

  As shown in FIG. 4, it is assumed that the room temperature in the house 4 exceeds (T2 + α) ° C. at time t0. In this state, the wood pellet hot air fan and the oil fired hot air fan are stopped. Thereafter, when the room temperature detected by the room temperature sensor decreases and reaches (T2 + α) ° C. at time t1, the control unit starts the operation of the wood pellet hot air blower (low combustion operation). Here, the low combustion operation is an operation mode in which the size of the heating load is, for example, about 50%.

  After that, when the heating capability is insufficient only by the low-burning operation of the wood pellet hot air blower, the room temperature detected by the room temperature sensor further decreases and reaches (T2-β) ° C. at time t2. Β may be the same number as α or a different number. Thereby, a control part carries out the high combustion driving | operation of the wood pellet firewood warm air machine. Here, the high combustion operation is an operation mode in which the heating load is approximately 100%.

  However, if the heating capability is insufficient only by the high combustion operation of the wood pellet hot air blower, the room temperature detected by the room temperature sensor further decreases and reaches T1 ° C. at time t3. As a result, the oil fired hot air fan starts operation. And if sufficient heating capability is obtained by the combined operation with the oil fired hot air fan, the room temperature will rise after being slightly lowered after time t3.

  In this way, the wood pellet fired hot air machine according to the comparative example starts the low combustion operation at (T2 + α) ° C. and starts the high combustion operation at (T2−β) ° C. However, when the inside of the house 4 cannot be heated sufficiently only by the heating capability of the wood pellet hot air fan, such as when the outside air temperature is low, the room temperature decreases to T1 ° C. as in the example shown in FIG. (In detail, the temperature falls below T1 ° C.). Therefore, in the heating system which concerns on a 1st comparative example, it cannot avoid that the temperature in the house 4 becomes low.

  FIG. 5 is a diagram showing a room temperature displacement and an operating state by the heating system according to the second comparative example, in which (a) shows a room temperature displacement and (b) shows a combustion state. In FIG. 5, T3 (T3> T2-β> T1) is the set temperature of the oil fired hot air fan according to the second comparative example, and T2 is the set temperature of the wood pellet hot air fan according to the second comparative example. It is. That is, in the second comparative example, the set temperature of the oil-fired hot air fan is set to increase from T1 ° C. to T3 ° C.

  As shown in FIG. 5, it is assumed that the room temperature in the house 4 exceeds (T2 + α) ° C. at time t0. In this state, the wood pellet hot air fan and the oil fired hot air fan are stopped. Thereafter, when the room temperature detected by the room temperature sensor decreases and reaches (T2 + α) ° C. at time t1, the control unit starts the operation of the wood pellet hot air blower (low combustion operation).

  Thereafter, the room temperature detected by the room temperature sensor further decreases and reaches T3 ° C. at time t2. As a result, the oil fired hot air fan starts operation. And after time t2, room temperature will rise, after falling slightly.

  Next, it is assumed that the room temperature detected by the room temperature sensor reaches T2 ° C. at time t3. As a result, the oil fired hot air machine stops operation. Thereafter, if the room temperature further increases and the room temperature detected by the room temperature sensor reaches (T2 + α) ° C. at time t4, the wood pellet fired hot air machine stops its operation.

  Next, the room temperature detected by the room temperature sensor after time t4 exceeds (T2 + α) ° C., and then the wood pellet hot air fan and the oil fired hot air machine are stopped. It falls to (T2 + α) ° C. at time t5. Thereby, a control part starts the driving | operation of a wood pellet firewood warm air machine again (low combustion driving | operation).

  Next, the room temperature detected by the room temperature sensor further decreases and reaches T3 ° C. at time t6. As a result, the oil fired hot air fan starts operation. Thereafter, the above operation is repeated.

  As described above, in the second comparative example, the temperature in the house is lowered to T1 ° C. by increasing the set temperature of the oil fired hot air fan within the range below the set temperature of the wood pellet hot air fan. Can be prevented.

  However, when configured as in the second comparative example, even if heating is possible only with the operation of the wood pellet fired air blower, the oil fired by the undershoot of the temperature in the house due to the response delay of the wood pellet fired hot air blower. The warm air machine may start operation. More specifically, for example, when the outside air temperature is high, the low-burning operation of the wood pellet hot air fan may be sufficient to maintain the house temperature. However, even if the wood pellet fired hot air fan starts operation, as shown in FIG. 5, the temperature in the house 4 is not immediately increased, but an undershoot occurs in the temperature in the house 4. In particular, when the wood pellet fired hot air machine burns the wood pellet fuel with the electric heater, it takes time from the start of ignition control of the electric heater until the wood pellet fuel burns. This undershoot causes the oil fired hot air fan to start operation despite the low combustion operation of the wood pellet fired hot air fan, and the combustion amount of the wood pellet fired hot air machine decreases or stops operation. I will. Therefore, the priority operation of an ideal wood pellet fired hot air fan cannot be realized.

  In particular, in the second comparative example, the set temperature of the oil fired hot air fan is set to T3 ° C., so that the wood pellet hot air fan cannot start the high combustion operation. For this reason, from this point of view, it cannot be said that the priority operation of the ideal wood pellet fired hot air machine is realized.

  Therefore, the wood pellet fired hot air machine 1 according to the present embodiment has the following configuration. FIG. 3 will be referred to again. As shown in FIG. 3, the control device 50 includes an input unit 52. The input unit 52 inputs information on the operation state of the oil-fired hot air fan 2 that heats the house 4. The information on the operating state is, for example, information on whether the oil fired hot air fan 2 is operating or stopped. The information on the operating state is not limited to this, and when the oil fired hot air fan 2 performs a low combustion operation or a high combustion operation, it may be information on an operation load such as a low combustion operation or a high combustion operation. Good.

  Furthermore, in this embodiment, the control part 51 changes the combustion control of a wood pellet fuel according to the information of the operation state of the oil fired hot air machine 2. FIG. Specifically, when the operating load of the oil fired hot air fan 2 becomes high, the control unit 51 changes the set temperature of the wood pellet hot air fan 1 to change the combustion control.

  For example, an oil fired hot air fan operates in three stages: high combustion operation (operating load 100%), low combustion operation (operating load 50%), and stop (operating load 0%). In some cases, for example, the control unit 51 sets the set temperature of the wood pellet hot air fan 1 to A ° C. when the oil fired hot air fan 2 is stopped, and the wood pellets when the oil fired hot air fan 2 is operating at low combustion. The set temperature of the firewood hot air blower 1 is B (B> A) ° C., and the set temperature of the wood pellet hot air blower 1 is C (C> B) ° C. when the oil fired hot air blower 2 is operating at high combustion. It will be.

  As a result, the control unit 51 increases the set temperature in a situation where the operation load of the oil fired hot air fan 2 is increased and the amount of combustion of the wood pellet hot air fan 1 is reduced or the operation is easily stopped. The wood pellet fired hot air machine 1 is controlled to operate more. Thereby, even if it is the wood pellet fired hot air machine 1 used together with the oil fired hot air machine 2, it becomes difficult to produce the fall of a combustion amount or a stop of operation.

  FIG. 6 is a diagram showing a room temperature displacement and an operating state by the heating system 100 according to the present embodiment, where (a) shows a room temperature displacement and (b) shows a combustion state. In FIG. 6, the oil fired hot air fan 2 is operated (operating load 100%) and stopped (operating load 0%). Therefore, the control unit 51 does not operate the oil fired hot air fan 2. The set temperature is set to T2 ° C. (first temperature), and the set temperature is set to T4 ° C. (second temperature) higher than T2 ° C. when the oil fired hot air fan 2 is operating.

  As shown in FIG. 6, if the oil fired hot air fan 2 is stopped, the control unit 51 sets the set temperature of the wood pellet hot air fan 1 to T2 ° C. Further, it is assumed that the room temperature in the house 4 exceeds (T2 + α) ° C. at time t0. For this reason, the wood pellet fired hot air machine is also stopped.

  Thereafter, when the room temperature detected by the room temperature sensor 40 decreases and reaches (T2 + α) ° C. at time t1, the control unit 51 starts the operation of the wood pellet hot air blower 1 (low combustion operation).

  Thereafter, the room temperature detected by the room temperature sensor of the oil-fired hot air fan 2 further decreases, and reaches T3 ° C. at time t2. Thereby, the oil fired hot air fan 2 starts operation.

  Moreover, the input part 52 inputs the information of the driving | running state that the oil fired hot air fan 2 started driving | operation at the time of the time t2. Thereby, the control part 51 raises the preset temperature of the wood pellet fired hot air machine 1 to T4 degreeC.

  Furthermore, since the set temperature has risen to T4 ° C., the room temperature detected by the room temperature sensor 40 is equal to or lower than (T4-β) ° C. at which high combustion operation is started. Therefore, at time t2, the control unit 51 causes the wood pellet fired hot air machine 1 to perform a high combustion operation.

  As a result, at the timing when the oil fired hot air fan 2 starts operation, the wood pellet fired hot air machine 1 also performs high combustion operation, preventing a decrease in the amount of combustion of the wood pellet hot air fan 1 and stoppage of operation. Yes.

  And after time t2, room temperature will rise, after falling slightly. Next, it is assumed that the room temperature detected by the room temperature sensor of the oil tank warm air blower 2 reaches T2 ° C. at time t3. Thereby, the oil fired hot air fan 2 stops operation.

  Reference is now made to FIG. In the present embodiment, the control device 50 includes a timer unit 53. The time measuring unit 53 measures the time after the oil fired hot air fan 2 stops operating. In the present embodiment, when the operation is stopped from the state where the oil fired hot air fan 2 is operating, the control unit 51 waits for a predetermined time t from the time when the oil fired hot air fan 2 is stopped, Return from T4 ° C to T2 ° C.

  That is, as shown in FIG. 6A, when the oil fired hot air fan 2 stops operation at time t3, the control unit 51 sets the set temperature to T4 ° C. at time t5 when a predetermined time t has elapsed from time t3. To T2 ° C. As a result, the set temperature is returned to T2 ° C. without waiting for a predetermined time t to prevent a situation where the wood pellet fired hot air fan 1 immediately shifts to a low combustion operation or stops the operation, and immediately resumes the oil fire temperature. The situation where the wind machine 2 starts operation can be prevented.

  An example will be described. When the set temperature is T2 ° C., the wood pellet fired warm air machine 1 performs low combustion operation in the range of (T2−β) ° C. to (T2 + α) ° C. For this reason, if the elapse of the predetermined time t is not waited, the wood pellet fired hot air fan 1 starts the low combustion operation at the time t3. Due to the transition of the wood pellet hot air blower 1 to the low combustion operation, in some cases, the room temperature starts to drop immediately and may reach T3 ° C. In such a case, the oil fired hot air fan 2 immediately starts operation again. Therefore, the operation frequency of the oil fired hot air fan 2 is increased. However, by waiting for the elapse of the predetermined time t and returning the set temperature to T2 ° C., the wood pellet fired hot air machine 1 operates at a high combustion in a temperature range of (T4-β) ° C. or less until the predetermined time t elapses. In the example shown in FIG. 6, the wood pellet fired hot air fan 1 continues the high combustion operation until the time t4 is reached.

  Then, at time t5 after a predetermined time t has elapsed from time t3, the control unit 51 returns the set temperature from T4 ° C. to T2 ° C. Thereafter, the above-described operation is repeated.

  Thus, according to the wood pellet fired hot air machine 1 and its control method according to the present embodiment, the combustion control is changed according to the operating state of the oil fired hot air machine 2 that heats the same room, By operating the warm air fan 2, the combustion control which suppresses that the combustion amount of the wood pellet fired warm air machine 1 falls or stops an operation | movement can be performed. Thereby, it is possible to prevent the priority operation of the wood pellet fired air blower 1 from being hindered by the operation of the oil fired hot air blower 2, and the operation with the oil fired hot air blower 2 is more preferentially operated. be able to.

  Further, when the operating load of the oil fired hot air fan 2 becomes high, the set temperature is changed to be higher, and the combustion control is changed. For this reason, the operating load of the oil fired hot air fan 2 is increased, and the set temperature is increased in a situation where the combustion amount of the wood pellet fired hot air fan 1 is reduced or the operation is easily stopped. As a result, the wood pellet hot air blower 1 is controlled so as to be more operated, and it is difficult for the combustion amount to be reduced and the operation to be stopped. Therefore, it is possible to operate with higher priority in the combined operation with the oil-fired hot air fan 2.

  Further, when the oil fired hot air fan 2 is not operating, the set temperature is set to the first temperature T2 ° C., and when the oil fired hot air fan 2 is operated, the set temperature is set to the second temperature higher than the first temperature T2 ° C. T4 ° C. For this reason, in the situation where the oil fired hot air blower 2 is operated and the amount of combustion of the wood pellet hot air blower 1 is reduced or the operation is easily stopped, the set temperature is set to the second temperature higher than the first temperature T2 ° C. It will be set to T4 degreeC. As a result, the wood pellet hot air blower 1 is controlled so as to be more operated, and it is difficult for the combustion amount to be reduced and the operation to be stopped. Therefore, it is possible to operate with higher priority in the combined operation with the oil-fired hot air fan 2.

  Further, when the operation is stopped from the state where the oil fired hot air fan 2 is operating, the set temperature is changed from the second temperature T4 ° C. to the first temperature after a predetermined time t has elapsed since the operation of the oil fired hot air fan 2 is stopped. Return to temperature T2 ° C. For this reason, without returning to 1st temperature T2 degreeC without waiting for predetermined time t, the situation where the wood pellet hot air fan 1 stops combustion immediately does not arise, and the oil hot air fan 2 starts operation again. The situation can be prevented.

  As described above, the present invention has been described based on the embodiment, but the present invention is not limited to the above embodiment, and may be modified without departing from the gist of the present invention. For example, various configurations and the like in the wood pellet fired hot air machine 1 according to the present embodiment are not limited to those illustrated. Moreover, the wood pellet fired hot air machine 1 is not limited to the one operated together with the oil fired hot air machine 2, and may be operated together with other hot air machines.

  The information on the operating state of the oil fired hot air fan 2 is a concept including not only information on operation and stoppage of operation but also information on operation load such as low combustion operation and high combustion operation. For this reason, the wood pellet fired hot air machine 1 not only changes the combustion control according to the operation of the oil fired hot air machine 2 and the stop of the operation, but also according to the low combustion operation and the high combustion operation of the oil fired hot air machine 2. Combustion control may be changed. As an example, the set temperature is set to B (B> A) ° C. when other warm air machines are operating at low combustion, and the set temperature is set to C (C> when other hot air machines are operating at high combustion. B) It will be set to ° C. In this way, the wood pellet fired hot air machine 1 may change the combustion control according to the operation load. This is because the same effect can be obtained.

  Furthermore, the temperature relationships shown in FIGS. 4 to 6 can be changed as appropriate without departing from the spirit of the present invention. For example, in the example shown in FIG. 6, the oil fired hot air fan 2 has stopped operating at T2 ° C., which is the set temperature of the wood pellet hot air fan 1, but is not limited to T2 ° C. in particular.

  In addition, the wood pellet fired hot air machine 1 according to the present embodiment burns the wood pellet fuel by the electric heater, and it takes time until the wood pellet fuel burns from the start of ignition control of the electric heater. For this reason, temperature undershoot is likely to occur. However, even when the wood pellet fuel is burned by a configuration other than the electric heater, it takes a certain time until the inside of the house 4b is heated. The wood pellet fuel may be burned not only by burning the fuel but by other configurations.

  Furthermore, in the above description, the wood pellet fired hot air machine has been described as an example. However, the present invention is not limited to the wood pellet fired hot air machine, but is a garbage fired hot air machine using garbage as fuel, a wood chip fired hot air machine using wood chips as fuel, and bio Other renewable fuel-fired hot air fans such as biofuel-fired hot air machines that use fuel as fuel may be used.

DESCRIPTION OF SYMBOLS 1 ... Wood pellet fired hot air machine 2 ... Oil fired hot air machine 3 ... Duct 3a ... Connection pipe 3b ... Branch pipe 4 ... House 9 ... Combustor 11 ... Furnace 13 ... Chimney 15 ... Arrow 17 ... Air blower 19 ... Air intake 21 ... Warm air outlet 40 ... Room temperature sensor 50 ... Control device 51 ... Control unit (control means)
52 ... Input unit 53 ... Time measuring unit

Claims (5)

A regenerative fuel-fired hot air fan that uses heat generated by burning renewable fuel for room temperature control,
A room temperature sensor for detecting room temperature;
Control means for performing combustion control of the renewable fuel based on a signal from the room temperature sensor and a preset temperature set in advance,
The control means has an input unit for inputting operation state information indicating an operation state of another warm air fan that heats the room, and performs the combustion control according to the operation state information input by the input unit. Renewable fuel fired hot air machine characterized by changing. 2. The regenerative fuel-fired hot air fan according to claim 1, wherein when the operation load of the other hot air fan becomes high, the control unit changes the combustion control by changing the set temperature to be high. The control means sets the set temperature as the first temperature when the other warm air fan is not operating, and sets the set temperature higher than the first temperature when the other warm air fan is operating. The regenerative fuel-fired hot air machine according to claim 1 or 2, wherein the combustion control is changed by setting the temperature to two. The control means waits for the elapse of a predetermined time from the stop of the operation of the other warm air fan when the operation is stopped from the state in which the other hot air fan is operating, and then sets the set temperature from the second temperature. It returns to said 1st temperature. The renewable fuel-fired hot air fan of Claim 3 characterized by the above-mentioned. A control method for a regenerative fuel fired hot air fan that uses heat generated by burning a renewable fuel for room temperature control,
A control step of performing combustion control of the renewable fuel based on a signal from a room temperature sensor for detecting room temperature and a preset temperature set in advance,
In the control step, operating state information indicating an operating state of another warm air fan that heats the same room is input, and the combustion control is changed according to the input operating state information.制 御 Control method of warm air machine.

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