JP2943672B2 - Heat storage combustion heating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a regenerative combustion / heating apparatus that heats indoor air to warm air by combustion, and also heats and stores heat in a heat storage unit to convert the heat storage unit to hot air.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 14, a heat storage combustion heating apparatus of this type includes a burner 2 in a main body casing 1,
A combustion tube 3 arranged to surround the combustion portion of the burner 2
A burner blower 4 for supplying combustion air to the burner 2,
A blower 5 for taking in indoor air and blowing it out of the room, guides 6 and 6 'for regulating the flow direction of the air flow by the blower 5, and a mixing unit 7 for combustion exhaust gas and air formed by the guides 6 and 6' And a heat storage unit 8 disposed above the mixing unit 7, a hot air outlet 9 from which hot air is blown out, and a control unit 10 for controlling combustion and operation of the blower 5.

When the combustion air is supplied by the burner blower 4 and the burner 2 is burned, high-temperature combustion exhaust gas is discharged from the outlet of the combustion tube 3 and reaches the mixing section 7. On the other hand, the flow direction of the air flow supplied from the blower 5 is regulated by guides 6 and 6 ′,
And mixed with the combustion exhaust gas. The heat storage member 8 is heated by the mixed flow, and the mixed flow is thereafter heated by the hot air outlet 9.
It is blown out as warm air. When the combustion is stopped, the air flow supplied from the blower 5 receives heat from the heat storage unit 8 and continues to emit hot air for a certain period of time even after the combustion.

[0004]

However, in the conventional structure as described above, the heat storage section 8 is heated not only by the combustion exhaust gas but also by the mixed flow of the combustion exhaust gas and the air flow. There was a problem that the temperature did not rise significantly and the amount of stored heat was too large to be able to store heat as compared with the case where heating was performed using only the combustion exhaust gas.

After the combustion is stopped, when the air flow supplied from the blower 5 receives heat from the heat storage unit 8 and becomes hot air to perform a heating operation without burning for a certain time, the temperature of the hot air is stored in the heat storage unit 8. Therefore, the airflow supplied from the blower 5 must be reduced in order to keep the hot air temperature constant. However, since the specification of the blower 5 is selected from the amount of air for obtaining a predetermined hot air temperature based on the amount of combustion heat of the burner 2, the amount of heat stored in the heat storage unit 8 is smaller than the amount of heat of combustion of the burner 2. There is also a problem that it is difficult to reduce the air volume of the blower 5 until the air volume for obtaining a predetermined hot air temperature.

[0006]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and comprises a blower for taking in and blowing out indoor air, a burner, a combustion cylinder for burning the burner, and a combustion exhaust gas. A heat storage section that forms a passage through which heat is stored from the inner peripheral side with high-temperature combustion exhaust gas during combustion, radiates heat from the inner peripheral side during combustion stop to exchange indoor air with warm air, and a heat storage section. and and regenerative combustion tube consisting of said combustion cylinder, and the hot air outlet for out blow indoor air to become warm air, it is operated burner and a blower, heated heat storage heat storage unit
Regenerative combustion heating mode and then blowing a combustion flue gas after the mixing with room air warm air, the operation of the burner is stopped,
The indoor air is composed of a control unit for selectively controlling the heat storage heating mode to exchange heat to hot air thermal storage heat of the heat storage unit, the system <br/> control part is constant hot air temperature in the heat accumulating heating mode Therefore, when the temperature of the hot air that has been blown to the heat storage unit and exchanged heat with the burner blower is higher than the set value, the blower also operates to increase the air flow, and in response to the decrease in the heat storage amount, also reduces the air flow of the blower,
When the air flow is below the minimum controllable air flow, the blower is stopped and operated with only the burner air blower.The air flow of the burner air blower is also reduced in response to the decrease in heat storage, and then stopped when the air flow is below the minimum controllable air flow of the burner blower. It is to let.

[0007]

Since the invention of claim 1 of the embodiment of the present invention is that a constant hot air temperature in the heat storage heating mode, warm air temperatures blown to the heat exchanger to the heat storage unit in the burner blower is higher than the set value Also, the blower is also operated to increase the air flow, the air flow of the blower is also reduced in response to the decrease in the heat storage amount, the blower is stopped from below the minimum controllable air flow, and the burner blower is operated only, and the heat storage amount is further increased In response to the decrease, the air volume of the burner blower is also reduced, and then a control unit for stopping the burner blower below the minimum controllable air volume is provided. If the temperature of the hot air that has been blown to the heat storage unit and exchanged heat is higher than the set value, the blower also operates to increase the air flow, and in response to the decrease in the heat storage amount, the air flow of the blower is also reduced. From The blower is stopped and operated with only the burner blower, and the air flow of the burner blower is also reduced in response to the decrease in the amount of stored heat. Can be

According to a second aspect of the present invention, a heat storage unit temperature sensor is provided as a means for detecting hot air temperature. In a heat storage heating mode, the control unit blows air to the heat storage unit by a burner blower. The temperature of the hot air that has undergone heat exchange is estimated using the temperature of the heat storage unit instead.If the temperature is higher than the set value, the blower also operates to increase the air flow, and in response to the decrease in the heat storage amount, the air flow of the blower is also reduced. From below the air volume, the blower is stopped and operated with only the burner fan, and further, the air volume of the burner fan is reduced in response to the decrease in heat storage, and then stopped when the air volume is below the minimum controllable air volume of the burner fan. The substitute air temperature estimation makes it possible to keep the hot air temperature substantially constant.

According to a third aspect of the present invention, the hot air outlet is provided with a movable louver for controlling the air flow in order to keep the hot air temperature constant in the heat storage heating mode. In the heat storage heating mode, the movable louver controls the air volume so that the hot air temperature at the hot air outlet is constant, so the heat is stored from the air volume to obtain a predetermined hot air temperature based on the combustion heat of the burner. Based on the heat storage amount of the heat storage unit in the heating mode, the air flow can be efficiently controlled up to the air flow for obtaining a predetermined hot air temperature.

According to a fourth aspect of the present invention, the heat storage section is provided with a vertical cylindrical portion and a top surface portion so as to close the upper end thereof, and the upper end of the cylindrical portion has the same direction as the hot air outlet of the apparatus. A configuration in which a heat storage combustion cylinder is provided, which is provided with a combustion exhaust gas outlet opening to the outside, a burner is disposed below the cylindrical portion of the heat storage unit, and the outer surface of the heat storage unit is covered with a heat insulating material except for the combustion exhaust gas outlet. In the thermal storage combustion heating mode, the combustion exhaust gas of the burner arranged below the tubular portion of the thermal storage unit heats and stores the thermal storage unit of the vertical tubular portion first, and then closes the upper end. The top surface is heated and stored by the provided top surface. Then, it flows out from the combustion exhaust gas outlet. Since the outer surface of the heat storage unit is covered with a heat insulating material, heat can be efficiently stored.

[0011] According to a fifth aspect of the present invention, there is provided a passage for a combustion exhaust gas in the entire circumference between the upper end of the tubular portion of the heat storage unit and the top surface, and furthermore, the outer surface of the heat storage unit is arranged at intervals of dimension L. Cover with a cover, open the part of the cover located at the lower end of the tubular portion of the heat storage unit, and open the passage of the combustion exhaust gas from the inner lower end of the tubular portion of the heat storage unit to the inner upper end, the passing port, the outer upper end, the outer lower end, and the lower end of the cover. In the heat storage heating mode, when air is blown by a burner blower, heat is first exchanged in the heat storage section of the cylindrical section, and then heat exchange is performed in the top section. do. Then, it flows out as hot air from the combustion exhaust gas outlet. In this way, heat can be efficiently radiated and heated to warm air.

According to a sixth aspect of the present invention, a passage for a combustion exhaust gas is provided at a part of the periphery between the upper end of the tubular portion of the heat storage unit and the top surface, and the outer surface of the heat storage unit has a dimension L. Cover at intervals, cover part located at the lower end of the tubular part of the heat storage part, open part of the surroundings in the direction opposite to the passage from the inside to the outside by 180 °, close the other part, and remove the flue gas The heat storage section has a configuration in which a heat storage combustion cylinder is provided to circulate from the lower end inside the cylindrical portion of the heat storage section to the inner upper end, the passage port, the outer upper end, and the outer side to the opening at the lower end of the cover. In the combustion heating mode, the combustion exhaust gas from the burner flows from the lower end inside the tubular portion of the heat storage unit to the inner upper end, the passing port, the outer upper end, the outer lower end,
The heat can be efficiently stored by moving to the opening at the lower end of the cover. In the heat storage heating mode, the heating air blown by the burner blower similarly moves from the lower end inside the tubular portion of the heat storage unit to the inner upper end, the passage opening, the outer upper end, the outer lower end, and the opening at the lower end of the cover, so that it is efficient. The heat can be dissipated and heated by warm air.

According to the invention of claim 7 of the present invention, the heat storage section is provided with a vertical cylindrical portion and a top surface portion so as to close an upper end thereof, a combustion gas exhaust port is provided in a part of the top surface portion, and The outer surface of the heat storage unit is covered with a cover at an interval of dimension L, the cover portion located at the lower end of the cylindrical portion of the heat storage unit is opened, and the passage of the combustion exhaust gas is formed from the lower end inside the cylindrical portion of the heat storage unit to the inner upper end, the top surface. , Through-hole, outside of the top surface portion, outside upper end of the cylindrical portion, outside lower end, the opening of the lower end of the cover is provided with a heat storage combustion cylinder, the combustion exhaust gas of the burner in the heat storage combustion heating mode Passes from the lower end inside the cylindrical portion of the heat storage unit to the opening between the upper end and the top surface, and from the upper end outside to the opening in the opposite direction by 180 °, the contact area with the heat storage unit increases, and more efficiently It can store heat. Also, in the heat storage heating mode, the heating air blown by the burner blower similarly passes, and the heat storage can be efficiently radiated to be heated to the warm air.

The invention according to claim 8 of the present invention is a thermal storage combustion system in which an air inlet for introducing a part of room air blown out by a blower is provided in a heat storage unit, and an air outlet for blowing hot air is provided above the heat storage unit. In the thermal storage combustion heating mode, the combustion exhaust gas of the burner is discharged from the lower end inside the cylindrical portion of the heat storage unit to the inner upper end, the top surface, the passage opening, the outer surface of the top surface, and the outer upper end of the cylindrical portion. Since it passes through the openings at the lower end of the outside and the lower end of the cover, the contact area with the heat storage section increases, and heat can be efficiently stored. Also, in the heat storage heating mode, the heating air blown by the burner blower similarly passes, and the heat storage can be efficiently radiated to be heated to the warm air.

According to a ninth aspect of the present invention, there is provided a heat storage section hot air blower for blowing a part of room air into the heat storage section and exchanging heat with hot air. In the heat storage heating mode, the air inlet is opened by the driving force, and a part of the indoor air blown out by the blower is introduced to efficiently Heat storage can be exchanged for warm air.

Next, in the regenerative heating mode, the regenerator warm air blower is driven to blow a part of the room air into the regenerator to exchange heat with warm air. Therefore, the heat storage amount can be efficiently exchanged with warm air.

(Embodiments) Hereinafter, reference examples and embodiments of the present invention will be described with reference to the drawings.

[0018] be described with reference to FIG. 1 in Reference Example 1 (Reference Example 1) The present invention. FIG.
1 is a cross-sectional view of a heat storage combustion heating device according to a first embodiment of the present invention.

In FIG. 1, reference numeral 8a denotes a heat storage section, which is provided above the combustion tube 3, and heats and stores the burner 2 with the combustion exhaust gas during combustion, and releases heat when the combustion is stopped. Numeral 11 denotes a heat storage combustion cylinder which is composed of a combustion cylinder 3 and a heat storage part 8a. Numeral 12 denotes a heat insulating section for insulating the heat storage section 8a.

The operation of the above configuration will be described. When selecting the combustion heating mode, the control unit 10a burns the burner 2 and operates the blower 5. The combustion exhaust gas of the burner 2 heats and accumulates heat in the heat storage section 8a, flows out of the heat storage combustion cylinder 11, and reaches the mixing section 7. The air flow and the combustion exhaust gas supplied from the blower 5 are mixed in the mixing unit 7 and blown out from the hot air outlet 9 as warm air suitable for heating. On the other hand, the control unit 10
When the heat storage mode is selected, a stops the combustion of the burner 2 and continues the operation of the blower 5. Thermal storage combustion cylinder 11
Since the air flow flows through the heat storage unit 8a, heat is radiated from the inner peripheral surface of the heat storage unit 8a and is exchanged with warm air. As described above, the heat storage unit 8a is heated only by the combustion exhaust gas, not by the mixed flow of which the temperature is reduced by the mixing of the air flow supplied from the blower 5 and the combustion exhaust gas. The amount can be increased.

[0021] will be described with reference to Figure 2. Reference Example 2 (Reference Example 2) The present invention. FIG. 2 is a sectional view of a heat storage combustion heating apparatus according to a reference example of the present invention. The difference between Reference Example 1 and Reference Example 1 is that a burner blower that blows combustion air to the burner in the heat storage combustion heating mode is provided, and a control unit that operates the burner blower also in the heat storage heating mode is provided. It is in.

In FIG. 2, reference numeral 4a denotes a burner blower for blowing combustion air to the burner, and 10b denotes a control unit for operating the burner blower 4a even in the heat storage heating mode.

According to Example 2 of the present invention, after being heat-storage unit 8a in the combustion heating mode, when selecting the heat storage heating mode, the control unit 10b causes the operation of the burner blower 4a,
In order to send indoor air to the inner peripheral side of the heat storage unit 8a and exchange heat with warm air, the inner peripheral surface of the heat storage unit 8a can be used as a heat exchange part in the heat storage heating mode.

[0024] will be described with reference to FIGS. 3 and 4 a first embodiment of the present invention will now (Embodiment 1). FIG. 3 is a sectional view of the heat storage combustion heating device according to Embodiment 1 of the present invention, and FIG. 4 is an operation sequence diagram. Differs from the reference example 1 in the first embodiment, the hot air temperature is higher than the set value, the fan 5 also increases the air volume in operation, air volume of the blower in response to a decrease in the heat storage amount decreases, When the air flow is below the minimum controllable air flow, the blower is stopped and operated with only the burner air blower.The air flow of the burner air blower is also reduced in response to the decrease in heat storage, and then stopped when the air flow is below the minimum controllable air flow of the burner blower. The configuration is such that a control unit is provided for controlling the operation.

3 and 4, reference numeral 10c denotes a control unit which controls the blower 5 and the burner blower 4a so that the hot air temperature detected by the hot air temperature sensor 13 falls within a set range.

According to the first embodiment of the present invention, control unit 1
At 0c, the hot air temperature sensor 13 detects the temperature of the hot air that has been blown to the heat storage unit 8a by the burner blower 4a and exchanged heat. If the temperature is higher than the set value, the blower 5 is also operated to increase the air volume to reach the set value. When the heat storage amount decreases and the warm air temperature decreases, the air volume of the blower 5 is correspondingly reduced. Blower 5
If the set value is not less than the minimum controllable air flow, the blower 5 is stopped and operated only by the burner blower 4a. Further, when the heat storage amount decreases and the hot air temperature decreases, the burner blower 4a The air volume is also reduced, and then stopped if the set value is not reached unless the air volume is below the minimum controllable air volume of the burner blower 4a. Thus, the blower 5
And the maximum total air volume of the burner blower 4a
The air volume can be controlled up to the minimum controllable air volume of a, and the hot air temperature can be kept constant in a wide control range in accordance with the increase or decrease of the heat storage amount.

(Embodiment 2 ) Embodiment 2 will be described with reference to FIGS. FIG.
Is a sectional view of a heat storage combustion heating apparatus according to Embodiment 2 of the present invention,
FIG. 6 is an operation sequence diagram. The difference between the second embodiment and the first embodiment is that a control unit is provided for estimating the temperature of the hot air that has been blown to the heat storage unit by the burner blower 4 and exchanged heat with the temperature of the heat storage unit.

5 and 6, reference numeral 10d denotes a control unit which estimates the temperature of the heat storage unit 8a detected by the heat storage unit temperature sensor 14 as the hot air temperature, and sets the blower 5,
The burner blower 4a is controlled.

According to the second embodiment, in the heat storage heating mode, when the temperature of the heat storage unit 8a detected by the heat storage unit temperature sensor 14 is higher than the set value, the control unit 10d also operates the blower 5 to increase the air volume. When the heat storage amount decreases and the hot air temperature decreases, the blower 5
To reduce the air volume. If the set value is not less than the minimum air volume that can be controlled by the blower 5, the blower 5 is stopped and operated only by the burner blower 4a. 4a
Is also reduced, and then stopped when the set value is not reached unless it is equal to or less than the minimum controllable air volume of the burner blower 4a. In this way, the air flow can be controlled from the maximum total air flow of the blower 5 and the burner blower 4a to the minimum controllable air flow of the burner blower 4a, and the temperature of the hot air can be kept constant over a wide control range according to the increase or decrease of the heat storage amount. Can be

(Embodiment 3 ) Embodiment 3 will be described with reference to FIG. FIG. 7 is a sectional view of a heat storage combustion heating apparatus according to Embodiment 3 of the present invention. Differs from the reference example 1 in the third embodiment, in that it has a formed by providing a movable louvers for controlling the air volume configuration for the hot air temperature in the hot air outlet in the heat storage heating mode constant.

In FIG. 7, reference numeral 15 denotes a movable louver which is provided at the hot air outlet 9, and controls the air flow by the control unit 10e to keep the hot air temperature constant.

According to the third embodiment, in the heat storage heating mode, the control unit 10e detects the temperature of the hot air that is blown to the heat storage unit 8a by the burner blower 4a and exchanges heat with the hot air temperature sensor 13, and determines that the temperature is higher than the set value. The movable louver 15 is further opened to increase the air flow so as to reach a set value. When the heat storage amount decreases and the hot air temperature decreases, the movable louver 15 is closed correspondingly. Reduce air volume. Further, if the heat storage amount decreases and the warm air temperature decreases, and if the set value does not reach the minimum controllable air flow that is not less than the closing controllable air volume, the air is completely closed. In this way, the air volume can be controlled,
The hot air temperature can be kept constant over a wide control range in accordance with the increase or decrease of the heat storage amount.

(Embodiment 4 ) Embodiment 4 will be described with reference to FIG. FIG. 8 is a sectional view of a heat storage combustion heating apparatus according to Embodiment 4 of the present invention. Differs from the reference example 1 in the fourth embodiment, the heat storage unit is provided with a top portion to close the upper end and the tubular portion of the vertical,
In addition, a combustion exhaust gas outlet that opens in the same direction as the hot air outlet of the device is provided at the upper end of the cylindrical part, and a burner is provided below the cylindrical part of the heat storage part. And a heat storage combustion cylinder covered with a heat insulating material.

In FIG. 8, reference numeral 11a denotes a heat storage combustion tube, and a heat storage portion 8b is provided with a vertical cylindrical portion 16 and a top surface portion 17 so as to close an upper end thereof. A combustion exhaust gas outlet 18 opened in the same direction as the port 9 is provided, and the burner 2 is disposed below the tubular portion 16 of the heat storage unit.
Are covered by the heat insulating part 12.

According to the fourth embodiment, in the heat storage combustion heating mode, the combustion exhaust gas of the burner 2 disposed below the cylindrical part 16 of the heat storage part 8b first heats the vertical cylindrical part 16 of the heat storage part 8b by heat storage. Then, the top surface 17 provided so as to close the upper end is heated and stored. And the exhaust gas outlet 1
Flow out of 8. Since the outer surface of the heat storage section 8b is covered with the heat insulating section 12, heat can be efficiently stored. In the heat storage heating mode, when air is blown by the burner blower 4a, heat is first exchanged in the cylindrical portion 16 of the heat storage portion 8b, and then heat exchange is performed in the top surface portion 17. Then, it flows out from the combustion exhaust gas outlet 18 as warm air. Thus, heat can be efficiently radiated and heated to warm air.

[0036] The fifth embodiment (Embodiment 5) will be described with reference to FIG. FIG. 9 is a sectional view of a heat storage combustion heating apparatus according to Embodiment 5 of the present invention. Embodiment 5 is different from Reference Example 1 in that a combustion gas exhaust passage is provided in the entire periphery between the upper end of the tubular portion of the heat storage unit and the top surface, and the outer surface of the heat storage unit is further spaced at intervals of dimension L. The heat storage unit is covered with a cover, and a portion of the cover located at the lower end of the tubular portion of the heat storage unit is provided with an open heat storage combustion tube.

In FIG. 9, reference numeral 11b denotes a heat storage combustion tube, and a heat storage portion 8c is provided with a passage 19 for a combustion exhaust gas all around the upper end of the cylindrical portion 16a and the top surface portion 17a. Are covered with the cover 20 at intervals of the dimension L, and the cover portion 21 located at the lower end of the cylindrical portion 16a of the heat storage section 8c
Is open.

According to the fifth embodiment, in the heat storage combustion heating mode, the combustion exhaust gas from the burner 2 is discharged from the cylindrical portion 1 of the heat storage portion 8c.
Heat is stored first from the inner peripheral side of 6a, and then the top surface 17a provided at the upper end is heated and stored. Then, it moves from the entire circumference to the upper end of the outer peripheral surface through the passage 19 of the combustion exhaust gas. Further, the heat is stored from the outer peripheral surface while moving to the lower end, and flows out from the opening 21 at the lower end of the cover 20. In the thermal storage heating mode, when the air is blown by the burner blower 4a, the thermal storage section 8 is opened.
First, heat is exchanged in the cylindrical portion 16a of FIG.
To heat exchange. Then, it passes through the passage opening 19 and moves from the entire periphery to the upper end of the outer peripheral surface. Further, while moving to the lower end, heat is exchanged with warm air also from the outer peripheral surface, and flows out from the opening 21 at the lower end of the cover 20. In this manner, the heat storage unit 8c is heated and stored from both sides in the heat storage combustion heating mode, and in the heat storage heating mode, it can radiate heat from both sides and heat it to warm air, thereby efficiently storing and radiating heat.

(Embodiment 6 ) Embodiment 6 will be described with reference to FIG. FIG. 10 is a sectional view of the heat storage combustion heating device of the present invention. Embodiment 4 is different from Reference Example 1 in that a passage for the combustion exhaust gas is provided in a part of the periphery between the upper end of the cylindrical portion of the heat storage unit and the top surface, and the outer surface of the heat storage unit is defined by a dimension L. Cover at intervals, cover part located at the lower end of the tubular part of the heat storage part, open part of the surroundings in the direction opposite to the passage from the inside to the outside by 180 °, close the other part, and remove the flue gas Is arranged around the inner upper end, the passage opening, the outer upper end, and the outside from the lower end inside the tubular portion of the heat storage section to the opening of the lower end of the cover to provide a heat storage combustion cylinder.

In FIG. 10, reference numeral 11c denotes a heat storage combustion cylinder,
The heat storage section 8d is provided with a passage 19a for the combustion exhaust gas at a part of the periphery between the upper end of the cylindrical section 16b and the top surface section 17b,
Further, the outer surface of the heat storage section 8d is covered with a cover 20a at intervals of a dimension L.
The portion 21a of the cover 20a located at the lower end of the cylindrical portion 16b of the heat storage portion 8d is a passage port 19a from the inside to the outside.
A part of the periphery is opened in the opposite direction to that of 180 °, and the other part is closed.

According to the sixth embodiment, in the heat storage combustion heating mode, the combustion exhaust gas of the burner 2 is supplied to the cylindrical portion 1 of the heat storage portion 8d.
Heat is stored first from the inner peripheral side of 6b, and then the top surface 17b provided at the upper end is heated and stored. Then, it passes through the passage opening 19a and moves to the upper end of the outer peripheral surface. 18 from the outside top
While moving in the reverse direction of 0 ° to the opening 21a at the lower end, the heat is stored from the outer peripheral surface and flows out. In the heat storage heating mode, when air is blown by the burner blower 4a, heat is first exchanged in the cylindrical portion 16b of the heat storage portion 8d, and then heat is exchanged in the top surface portion 17b. Then, it passes through the passage opening 19a and moves to the upper end of the outer peripheral surface. Further, while moving from the outer upper end to the opening 21a at the lower end in the opposite direction by 180 °, heat is exchanged with warm air also from the outer peripheral surface, and flows out from the opening 21 at the lower end of the cover 20. As described above, the heat storage section 8d is heated and stored from both sides in the thermal storage combustion heating mode, and can also radiate the stored heat from both sides to the warm air in the thermal storage heating mode to efficiently store and release heat.

(Embodiment 7 ) Embodiment 7 will be described with reference to FIG. FIG. 11 is a sectional view of a heat storage combustion heating apparatus according to Embodiment 7 of the present invention.
The difference between the seventh embodiment and the reference example 1 is that the heat storage section is provided with a vertical cylindrical portion and a top surface portion so as to close the upper end thereof, and a combustion gas exhaust passage is provided in a part of the top surface portion. The outer surface of the heat storage unit is covered with a cover at an interval of dimension L, and the cover located at the lower end of the tubular portion of the heat storage unit is provided with an open heat storage combustion tube.

In FIG. 11, reference numeral 11d denotes a heat storage combustion cylinder,
The heat storage portion 8e is provided with a cylindrical portion 16c and a top surface portion 17c so as to close the upper end thereof, a combustion gas exhaust passage 19b is provided in a part of the top surface portion 17c, and the outer surface of the heat storage portion 8e is spaced by a distance L. Then, the portion 21b of the cover 20b located at the lower end of the cylindrical portion 16c of the heat storage section 8e is open.

According to the seventh embodiment, in the heat storage combustion heating mode, heat is first stored from the inner peripheral side of the cylindrical portion 16c of the heat storage portion 8e, and then the top surface portion 17c provided at the upper end is heated and stored. After passing through the passage opening 19b, the outside of the top surface 17b, the outside upper end and the outside bottom of the cylindrical portion 16b, the cover 20b
Out of the opening at the lower end 21b. In the heat storage heating mode, when air is blown by the burner blower 4a, heat is first exchanged in the cylindrical portion 16b of the heat storage portion 8d, and then heat is exchanged in the top surface portion 17b. After passing through the passage opening 19a, the top surface portion 17
b, the upper end, the outer lower end of the cylindrical portion 16b, and the outer upper end passing through the opening at the lower end of the cover. Out of the opening 20 at the lower end of the cover 20. Also, in the heat storage heating mode, the heating air blown by the burner blower similarly passes, and the heat storage can be efficiently radiated to be heated to the warm air. In this manner, the heat storage unit 8e is heated and stored from both sides in the heat storage combustion heating mode, and can also radiate the heat storage from both sides to heat the heated air even in the heat storage heating mode,
It can store and dissipate heat efficiently.

[0045] The eighth embodiment (Embodiment 8) will be described with reference to FIG. 12. FIG. 12 is a sectional view of a heat storage combustion heating apparatus according to the eighth embodiment. Embodiment 8 is different from Reference Example 1 in that the heat storage combustion cylinder is provided with an air inlet for introducing a part of the room air blown out by the blower in the heat storage unit, and the hot air is supplied to the upper part of the heat storage unit. in that a structure formed by providing an air-blown <br/> out Shi mouth blowing.

In FIG. 12, reference numeral 11e denotes a heat storage combustion tube provided with an air inlet 22 which is opened by a driving force for introducing a part of the room air blown out by a blower into the heat storage unit 8a and exchanging heat with warm air. I have.

According to the eighth embodiment, in the heat storage heating mode, the air inlet 22 is opened by the driving force, and a part of the room air blown out by the blower 5 is introduced to efficiently transfer the heat storage amount to the warm air. Can be exchanged.

(Embodiment 9 ) Embodiment 9 will be described with reference to FIG. FIG. 13 is a sectional view of a heat storage combustion heating apparatus according to the ninth embodiment. The difference between the ninth embodiment and the reference example 1 is that the heat storage combustion cylinder has a configuration in which a heat storage part hot air blower is provided in the heat storage part for blowing a part of the indoor air and exchanging heat with hot air. is there.

In FIG. 13, reference numeral 11f denotes a heat storage / combustion cylinder provided with a heat storage unit hot air blower 23 for blowing part of room air into the heat storage unit 8a to exchange heat with hot air.

According to the ninth embodiment of the present invention, in the thermal storage heating mode, the thermal storage section warm air blower 23 is driven to blow a part of the room air into the thermal storage section 8a to exchange heat with the warm air. Therefore, the heat storage amount can be efficiently exchanged with warm air.

[0051]

As described above, according to the present invention, the heat storage combustion heating apparatus heats and stores heat from the inner peripheral side with high temperature combustion exhaust gas during combustion, and radiates heat from the inner peripheral side during combustion stoppage to generate indoor air with hot air. A heat storage combustion cylinder consisting of a heat storage section that exchanges heat with a combustion cylinder that burns a burner, a heat storage combustion heating mode in which a burner and a blower are operated, the heat storage section is heated and stored, and then blown out as warm air. By selecting the combustion heating mode, the control unit operates the burner and the blower to operate the burner and the blower, and the combustion is performed indoors. The air exchanges heat with warm air, and at the same time, the heat storage section is heated and stored by the combustion exhaust gas while the burner is burning. When the heat storage heating mode is selected, the burner stops operating, the blower continues to operate, and the indoor air is exchanged with warm air by radiating heat from the heat storage unit. Further, when the temperature of the heat storage unit decreases to the set temperature due to heat radiation, the operation of the blower also stops, and the operation in the heat storage heating mode ends. In this way, heating is performed only by the combustion exhaust gas to increase the heat storage amount, and heating without combustion can be performed.

[0052] Further, when hot air temperature is higher than the set value, the blower be operated to increase the air volume, the air volume of the blower in response to a decrease in the heat storage amount decreases, stops the blower from below a minimum air volume controllable The burner blower was operated only, and the control unit was further provided to reduce the air flow of the burner blower in response to the decrease in the heat storage amount, and then to stop when the burner blower was below the controllable minimum air flow. Then, the control unit detects the temperature of the hot air that has been blown to the heat storage unit by the burner blower and exchanged heat with the hot air temperature sensor, and if it is higher than the set value, the blower is also operated to increase the air volume to reach the set value. When the heat storage amount decreases and the hot air temperature decreases, the air volume of the blower is correspondingly reduced. If the set value is not less than the minimum air flow that can be controlled by the blower, if it does not reach the set value, stop the blower and operate only with the burner blower, furthermore, if the heat storage amount decreases and the hot air temperature decreases, the air flow of the burner blower will also correspond If the set value is not less than the minimum controllable air flow of the burner blower and then the set value is stopped, the air flow is controlled from the maximum total air flow of the blower and the burner blower to the minimum controllable air flow of the burner blower. Thus, there is an effect that the hot air temperature can be kept constant in a wide control range in accordance with the increase or decrease of the heat storage amount.

Next, according to the present invention, the heat storage unit temperature sensor is provided as a means for detecting the temperature of the hot air, so that the control unit in the heat storage heating mode sends the hot air to the heat storage unit using the burner blower to exchange heat. If the temperature is higher than the set value, the blower is also operated to increase the air flow, the air flow of the blower is also reduced in response to the decrease in the heat storage amount, and the blower is started from below the minimum controllable air flow. Stop and operate with only the burner blower, further reduce the amount of heat of the burner blower in response to the decrease in heat storage, and then stop below the minimum controllable air flow of the burner blower. There is an effect that the hot air temperature can be made substantially constant.

Next, according to the present invention, a movable louver for controlling the air volume is provided to keep the temperature of the hot air at the outlet of the hot air in the heat storage heating mode. Is detected by the hot air temperature sensor to detect the temperature of the hot air that has been sent to the heat storage unit and exchanged heat.
Open the movable louver to increase the air volume to the set value, and when the heat storage decreases and the hot air temperature decreases, the movable louver is closed to reduce the air volume. Let it. There is an effect that the hot air temperature can be kept constant in a wide control range in accordance with the increase or decrease of the heat storage amount.

Next, according to the present invention, the heat storage section is provided with a cylindrical portion and a top surface portion so as to close the upper end thereof, and further, a combustion exhaust gas outlet opening at the upper end of the cylindrical portion in the same direction as the hot air outlet of the apparatus. In the heat storage combustion heating mode, the burner's flue gas in the heat storage combustion heating mode has the outer surface of the heat storage section provided with a heat storage combustion cylinder covered with heat insulating material except for the combustion exhaust gas outlet.
First, the tubular portion of the heat storage unit is heated and stored, and flows out from the top surface and the combustion exhaust gas outlet. Heat can be stored efficiently. In the thermal storage heating mode, air is blown by a burner blower, and similarly, heat exchange is first performed in the tubular portion of the thermal storage unit, and then heat exchange is performed in the top surface. Then, it flows out as hot air from the combustion exhaust gas outlet. Thus, there is an effect that heat can be efficiently radiated and heated to warm air.

Next, according to the present invention, a combustion exhaust gas passage is provided in the entire periphery between the upper end of the cylindrical portion of the heat storage unit and the top surface, and the outer surface of the heat storage unit is covered with a cover at intervals of dimension L. In the heat storage combustion heating mode, the combustion exhaust gas from the burner is discharged from the lower end inside the cylindrical portion of the heat storage section to the upper end inside the cylindrical section of the heat storage section. The heat can be efficiently stored by moving to the opening of the passage opening, the outer upper end, the outer lower end, and the cover lower end. In the heat storage heating mode, the heating air blown by the burner blower similarly moves from the lower end inside the tubular portion of the heat storage unit to the inner upper end, the passage opening, the outer upper end, the outer lower end, and the opening at the lower end of the cover, so that it is efficient. This has the effect that heat can be dissipated and heated by warm air.

Next, in the present invention, a passage for the combustion exhaust gas is provided in a part of the periphery between the upper end of the tubular portion of the heat storage unit and the top surface, and the outer surface of the heat storage unit is further covered with a cover at intervals of dimension L. The portion of the cover located at the lower end of the tubular portion of the heat storage section has a configuration in which a part of the periphery is opened in the opposite direction to the passage port from the inside to the outside, and the other portion is provided with a closed heat storage combustion cylinder. In the heat storage combustion heating mode, since the combustion exhaust gas of the burner passes from the lower end inside the cylindrical portion of the heat storage unit to the passage opening between the upper end and the top surface, and from the upper end outside to the opening 180 ° in the opposite direction, the heat storage unit is Heat is stored from both sides, and heat can be stored more efficiently. Also in the heat storage heating mode, there is an effect that the heating air blown by the burner blower similarly passes, and the heat storage is radiated from both surfaces to be efficiently heated to the warm air.

Next, according to the present invention, the heat storage section is provided with a vertical cylindrical portion and a top surface so as to close the upper end thereof, a combustion gas exhaust passage is provided in a part of the top surface portion, and the outer surface of the heat storage portion is further provided. In the heat storage combustion heating mode, the combustion exhaust gas of the burner is stored in the heat storage section by covering the cover with the cover at intervals of the dimension L and providing the heat storage combustion cylinder with an opening at the lower end of the cylindrical portion of the heat storage section. Because it passes from the inner lower end of the cylindrical portion to the inner upper end, the top surface, the passage opening, the outside of the top surface, the outer upper end, the outer lower end of the cylindrical portion, and the opening of the lower end of the cover, the contact area with the heat storage section increases. , Can efficiently store heat. Also in the heat storage heating mode, there is an effect that the heating air blown by the burner blower similarly passes and heat can be efficiently dissipated and heated to warm air.

Next, according to the present invention, the heat storage combustion cylinder is provided with an air inlet for introducing a part of the room air blown out by the blower into the heat storage part. In the heat storage heating mode, the air inlet is driven by the driving force. By opening the opening, a part of the room air blown out by the blower is introduced, and there is an effect that the heat storage amount can be efficiently exchanged with warm air.

Next, according to the present invention, the heat storage and combustion cylinder is provided with a heat storage part hot air blower for blowing part of the room air into the heat storage part and exchanging heat with hot air. Since the unit warm air blower is driven to blow a part of the indoor air into the heat storage unit to exchange heat with warm air, there is an effect that the heat storage amount can be efficiently exchanged with warm air.

[Brief description of the drawings]

Cross-sectional view of a main portion of the regenerative combustion heating device according to Reference Example 1 of the present invention

Cross-sectional view of a main portion of the regenerative combustion heating device according to Reference Example 2 of the present invention; FIG

FIG. 3 is a sectional view of a main part of the heat storage combustion heating device according to the first embodiment of the present invention.

FIG. 4 is an operation sequence diagram of the heat storage combustion heating device according to the first embodiment of the present invention.

FIG. 5 is a sectional view of a main part of a heat storage combustion heating device according to Embodiment 2 of the present invention.

FIG. 6 is an operation sequence diagram of the heat storage combustion heating apparatus according to Embodiment 2 of the present invention.

FIG. 7 is a sectional view of a main part of a heat storage combustion heating device according to a third embodiment of the present invention.

FIG. 8 is a sectional view of a main part of a heat storage combustion heating apparatus according to Embodiment 4 of the present invention.

FIG. 9 is a sectional view of a main part of a heat storage combustion heating device according to a fifth embodiment of the present invention.

FIG. 10 is a sectional view of a main part of a heat storage combustion heating apparatus according to a sixth embodiment of the present invention.

FIG. 11 is a sectional view of a main part of a heat storage combustion heating device according to a seventh embodiment of the present invention.

FIG. 12 is a sectional view of a main part of a heat storage combustion heating apparatus according to an eighth embodiment of the present invention.

FIG. 13 is a sectional view of a main part of a heat storage combustion heating device according to a ninth embodiment of the present invention.

FIG. 14 is a sectional view of a main part of a conventional heat storage combustion heating device.

[Description of Signs] 1 Body casing 2 Burner 3 Combustion cylinder 4, 4a Burner blower 5 Blower 6 Guide 6 7 Mixing section 8, 8a, 8b, 8c, 8d, 8e Heat storage section 9 Hot air outlet 10, 10b, 10c, 10e control unit 11, 11a, 11c, 11d, 11e, 11f heat storage combustion cylinder 12 heat insulation unit 13 hot air temperature sensor 14 heat storage unit temperature sensor 15 movable louver 16, 16a, 16b, 16c cylindrical unit 17, 17a, 17b, 17c Top surface portion 18 Combustion gas outlet 19, 19a, 19b Combustion exhaust gas passage 20, 20a, 20b Cover 21, 21a, 21b Cover portion located at lower end 22 Air inlet 23 Heat storage unit hot air blower

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F24H 7/00-7/06 F24H 3/04 301

Claims (9)

(57) [Claims] 1. A blower for inhaling and blowing out indoor air, a burner, a combustion cylinder for burning the burner, and a passage through which flue gas passes, and a high-temperature flue gas from the inner peripheral side during combustion. The heat storage unit is configured to heat and store heat. During the stop of combustion, a heat storage unit that radiates heat from the inner peripheral side and exchanges indoor air with warm air, a heat storage combustion tube including the heat storage unit and the combustion tube, and a warm air blowout port out blowing air, the burner and blower is operated, regenerative combustion heating mode and then blowing a combustion exhaust <br/> gas after heating the heat storage heat storage unit as mixed with room air hot air, the operation of the burner stops, and composed of a control unit for selectively controlling the heat storage heating mode to heat exchange in warm air to the indoor air in the heat storage heat of the heat storage unit, the control unit constant hot air temperature in the heat accumulating heating mode Heat storage section with a burner blower When the temperature of the hot air that has been blown and heat exchanged is higher than the set value, the blower also operates to increase the air flow, and also reduces the air flow of the blower in response to the decrease in the heat storage amount. A heat storage combustion and heating device that is stopped and operated only by the burner blower, further reduces the air flow of the burner blower in response to the decrease in the heat storage amount, and then stops when the burner blower is below the controllable minimum air flow. 2. A regenerative combustion heating apparatus according to claim 1, wherein using the heat storage unit temperature controller as detection means, for example, a hot air temperature. 3. A blower for taking in and blowing out indoor air, a burner, a combustion cylinder for burning the burner, and a passage for passing flue gas. During combustion, high-temperature flue gas flows from the inner peripheral side. The heat storage unit is configured to heat and store heat. During the stop of combustion, a heat storage unit that radiates heat from the inner peripheral side and exchanges indoor air with warm air, a heat storage combustion tube including the heat storage unit and the combustion tube, and a warm air blowout port out blowing air, the burner and blower is operated, regenerative combustion heating mode and then blowing a combustion exhaust <br/> gas after heating the heat storage heat storage unit as mixed with room air hot air, the operation of the burner stops, and composed of a control unit for selectively controlling the heat storage heating mode to heat exchange in warm air to the indoor air in the heat storage heat of the heat storage unit, the warm air blowing port is warm air in the heat storage heating mode Control the air flow to keep the temperature constant Regenerative combustion heating device provided with a movable louver. 4. A blower for taking in and blowing out indoor air, a burner, a combustion cylinder for burning the burner, and a passage through which flue gas passes. The heat storage unit is configured to heat and store heat. During the stop of combustion, a heat storage unit that radiates heat from the inner peripheral side and exchanges indoor air with warm air, a heat storage combustion tube including the heat storage unit and the combustion tube, and a warm air blowout port out blowing air, the burner and blower is operated, regenerative combustion heating mode and then blowing a combustion exhaust <br/> gas after heating the heat storage heat storage unit as mixed with room air hot air, the operation of the burner stops, and composed of a control unit for selectively controlling the heat storage heating mode to heat exchange in warm air to the indoor air in the heat storage heat of the heat storage unit, the heat storage unit and the cylindrical portion of the vertical and the upper end The top surface is provided to close, and the upper end of the cylindrical portion A combustion gas outlet opening in the same direction as the hot air outlet of the device was provided, a burner was provided below the tubular portion of the heat storage unit, and the outer surface of the heat storage unit was covered with heat insulating material except for the combustion gas outlet. Heat storage combustion heating device. 5. A blower for taking in and blowing out indoor air, a burner, a combustion cylinder for burning the burner, and a passage through which combustion exhaust gas passes. The heat storage unit is configured to heat and store heat. During the stop of combustion, a heat storage unit that radiates heat from the inner peripheral side and exchanges indoor air with warm air, a heat storage combustion tube including the heat storage unit and the combustion tube, and a warm air blowout port out blowing air, the burner and blower is operated, regenerative combustion heating mode and then blowing a combustion exhaust <br/> gas after heating the heat storage heat storage unit as mixed with room air hot air, the operation of the burner stops, and composed of a control unit for selectively controlling the heat storage heating mode to heat exchange in warm air to the indoor air in the heat storage heat of the heat storage unit, the tubular top end and the top surface portion of the heat storage unit A passage for flue gas is provided around the entire area between The outer surface of the portion is covered with a cover at intervals of dimension L, the portion of the cover located at the lower end of the tubular portion of the heat storage unit is opened, and the passage of the combustion exhaust gas from the lower end inside the tubular portion of the heat storage unit to the inner upper end, the passage opening A heat storage combustion heating device that is configured with openings at the outer upper end, the outer lower end, and the lower end of the cover. 6. A blower for inhaling and blowing out indoor air, a burner, a combustion cylinder for burning the burner, and a passage through which combustion exhaust gas passes. The heat storage unit is configured to heat and store heat. During the stop of combustion, a heat storage unit that radiates heat from the inner peripheral side and exchanges indoor air with warm air, a heat storage combustion tube including the heat storage unit and the combustion tube, and a warm air blowout port out blowing air, the burner and blower is operated, regenerative combustion heating mode and then blowing a combustion exhaust <br/> gas after heating the heat storage heat storage unit as mixed with room air hot air, the operation of the burner stops, and composed of a control unit for selectively controlling the heat storage heating mode to heat exchange in warm air to the indoor air in the heat storage heat of the heat storage unit, the tubular top end and the top surface portion of the heat storage unit Provide a flue gas exhaust port in a part of the surrounding area between The outer surface of the heat storage unit is covered with a cover at an interval of a dimension L, and a portion of the cover located at the lower end of the tubular portion of the heat storage unit is opened at a part around its periphery in a direction opposite to the passage from the inside to the outside by 180 °. The heat storage combustion heating device in which the portion of (1) is closed and the passage of the combustion exhaust gas is circulated from the lower end inside the tubular portion of the heat storage section to the inner upper end, the passage opening, the outer upper end, and the outer side to the opening at the lower end of the cover. 7. A blower for taking in and blowing out indoor air, a burner, a combustion cylinder for burning the burner, and a passage through which the combustion exhaust gas passes, and the combustion exhaust gas having a high temperature from the inner periphery during combustion. The heat storage unit is configured to heat and store heat. During the stop of combustion, a heat storage unit that radiates heat from the inner peripheral side and exchanges indoor air with warm air, a heat storage combustion tube including the heat storage unit and the combustion tube, and a warm air blowout port out blowing air, the burner and blower is operated, regenerative combustion heating mode and then blowing a combustion exhaust <br/> gas after heating the heat storage heat storage unit as mixed with room air hot air, the operation of the burner stops, and composed of a control unit for selectively controlling the heat storage heating mode to heat exchange in warm air to the indoor air in the heat storage heat of the heat storage unit, the heat storage unit and the cylindrical portion of the vertical and the upper end Provide the top surface so that it closes, and burn a part of the top surface An exhaust gas passage is provided, and the outer surface of the heat storage unit is further covered with a cover at an interval of dimension L. The cover portion located at the lower end of the cylindrical portion of the heat storage unit is opened, and the passage of the combustion exhaust gas is formed in the cylindrical portion of the heat storage unit. From the inner lower end to the inner upper end, the top surface,
Passage port, outside of the top surface, outside top of the cylindrical part, outside bottom,
A heat storage combustion heating device configured to the opening at the lower end of the cover. Wherein said air inlet for introducing a part of the indoor air blower blown into the thermal storage portion is provided, regenerative combustion heating device provided with a mouth Callout air for blowing hot air to the heat storage unit top. 9. A blower for inhaling and blowing out indoor air, a burner, a combustion cylinder for burning the burner, and a passage through which combustion exhaust gas passes, wherein high-temperature combustion exhaust gas flows from the inner peripheral side during combustion. The heat storage unit is configured to heat and store heat. During the stop of combustion, a heat storage unit that radiates heat from the inner peripheral side and exchanges indoor air with warm air, a heat storage combustion tube including the heat storage unit and the combustion tube, and a warm air blowout port out blowing air, the burner and blower is operated, regenerative combustion heating mode and then blowing a combustion exhaust <br/> gas after heating the heat storage heat storage unit as mixed with room air hot air, the operation of the burner stops, and composed of a control unit for selectively controlling the heat storage heating mode to heat exchange in warm air to the indoor air in the heat storage heat of the heat storage unit, by blowing part of the room air to the heat storage portion A heat storage section warm air blower that exchanges heat with warm air is provided, Regenerative combustion heating apparatus provided with air blowing and mouth blowing hot air to the portion located on the surface.