JPH09113032A - Thermal storage combustion heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to operate a thermal storage heating mode even in the system for supplying the part of the air flow of a blower to a burner for combustion by heating only by combustion exhaust gas and increasing the thermal storage amount in a thermal storage combustion heater for heating with warm air by the burner and a thermal storage unit. SOLUTION: A thermal storage combustion cylinder 11 having a thermnal storage unit 8b heated to be thermally stored from the inner peripheral side of the unit 8b by a blower 5 and a high-temperature combustion exhaust gas, radiated from the outer periphery and heat exchanged to warm air is provided. In a thermal storage combustion mode, a controller 10b for heat exchanging the combustion exhaust gas after the unit 8b is heated to be thermal stored with the indoor air fed from an air input opening and heat exchanging with warm air only by the thermal storage heat amount of the unit 8b thermally stored in the thermal storage heating mode is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage combustion heating apparatus capable of heating indoor air to warm air by combustion, and further heat-storing heat in a heat storage unit so that the heat storage unit also produces warm air.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 11, a heat storage combustion heating apparatus of this type includes a burner 2 in a main body casing 1,
Combustion tube 3 arranged so as to surround the combustion section of this burner 2.
And a combustion air port 4 for supplying combustion air to the burner 2.
A blower 5 that sucks in and blows out indoor air and blows out a part of the air flow also to the combustion air port 4, a guide 6 that regulates the flow direction of the air flow by the blower 5, and the combustion formed by this guide 6. Exhaust gas and air mixing unit 7, a heat storage unit 8 arranged on the mixing unit 7 upper part, a warm air outlet 9 for blowing out warm air, and a control unit 10 for controlling combustion and operation of the blower 5. It had been.

In the case of performing combustion in this heat storage combustion heating device, when the airflow is blown out by the blower 5, a part of the airflow is supplied from the combustion air port 4 to the burner 2 as combustion air to perform combustion. Further, the combustion exhaust gas is discharged from the outlet of the combustion tube 3 and reaches the mixing section 7. On the other hand, most of the air flow supplied from the blower 5 is regulated in the flow direction by the guide 6 and reaches the mixing section 7, where it is mixed with the combustion exhaust gas. The heat storage unit 8 is heated by this mixed flow, and then the mixed flow is blown out as warm air from the warm air outlet 9. When the combustion stopped, the airflow supplied from the blower 5 received heat from the heat storage section 8 and continued to emit warm air for a certain period of time even after the combustion.

Next, another conventional heat storage combustion heating device will be described with reference to FIG. In FIG. 12, reference numeral 8a denotes a heat storage unit, which is provided above the combustion tube 3 and heats and stores heat by the combustion exhaust gas while the burner 2 burns and radiates heat when the combustion is stopped. Reference numeral 11 denotes a heat storage combustion cylinder, which includes a combustion cylinder 3 and a heat storage section 8a. Reference numeral 12 is a heat insulating portion that insulates the heat storage portion 8a.
A burner blower 13 blows combustion air to the burner 2.

In this configuration, when the combustion heating mode is selected, the controller 10a operates the burner blower 13 to supply combustion air to burn the burner 2 and also the blower 5. The high-temperature combustion exhaust gas of the burner 2 heats and stores heat in the heat storage section 8 a, flows out from the heat storage combustion tube 11, and reaches the mixing section 7. The air flow supplied from the blower 5 and the combustion exhaust gas are mixed in the mixing section 7
The hot air outlet 9 is mixed as a hot air suitable for heating.
More blown out.

On the other hand, when the heat storage heating mode is selected, the control unit 10a stops the combustion of the burner 2, continues the operation of the blower 5, and further operates the burner blower 13.
The inner circumference of the heat storage portion 8a was used as a heat exchange portion, and the indoor air blown by the burner blower 13 was used to exchange heat with warm air.

[0007]

However, in the conventional structure as described above, the heat storage section 8 is heated not only by the combustion exhaust gas but by the mixed flow of the combustion exhaust gas and the air flow. There was a problem that the temperature did not rise significantly compared with the case of heating only with combustion exhaust gas, and therefore the amount of heat storage could not be increased.

After the combustion is stopped, when the airflow supplied from the blower 5 receives heat from the heat storage section 8 to become warm air and the heating operation is performed without combustion for a certain period of time, the warm air temperature is the heat storage section 8 Since the amount of heat storage decreases with a decrease in the amount of heat storage, the air flow supplied from the blower 5 must be decreased in order to keep the warm air temperature constant. However, since the specification of the blower 5 is selected from the air volume for obtaining the predetermined warm air temperature based on the combustion heat amount of the burner 2, the heat storage amount of the heat storage unit 8 which is smaller than the combustion heat amount of the burner 2 is used as the reference. There is also a problem that it is difficult to reduce the air volume of the blower 5 up to the air volume for obtaining the predetermined warm air temperature.

In another conventional configuration, the inner peripheral side of the heat storage portion 8a is used as a heat exchange portion, and the indoor air blown by the burner blower 13 exchanges heat with warm air, so that the burner blower 13 must be used. In a system that requires operation and does not use the burner blower 13, but supplies only a part of the air flow blown out by the blower 5 to the burner 2 as combustion air, heat is exchanged with warm air in the heat storage heating mode. Was difficult.

[0010]

SUMMARY OF THE INVENTION The present invention solves such a conventional problem by heating the heat storage portion only with high temperature combustion exhaust gas to increase the amount of heat storage, and the air flow blown out by a blower. Even if a part of the air is supplied to the burner as combustion air, it is possible to operate in heat storage heating mode.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is such that during combustion, high temperature combustion exhaust gas heats and stores heat from the inner circumference side, and when combustion is stopped, heat is radiated from the outer circumference to make room air warm air. A heat storage combustion cylinder consisting of a heat storage part for exchanging heat and a combustion cylinder for burning the burner, a burner and a blower are operated, and after the heat storage part is heated and stored, a heat storage combustion heating mode in which it is blown out as warm air, indoor air is stored in the heat storage part. The heat storage heating mode of exchanging heat with warm air with the heat storage heat amount of is configured to be provided with a control unit, the present invention has the above-described configuration, when the control unit selects the combustion heating mode, with a burner. Operate the blower to heat the indoor air to warm air by combustion, and at the same time,
The heat storage part is also heated and stored from the inner circumference by the combustion exhaust gas of the burner. Further, when the heat storage heating mode is selected, the burner stops the operation and the blower continues the operation to radiate heat from the outer circumference of the heat storage unit to exchange the indoor air with warm air. Further, when the heat storage unit lowers the set temperature due to heat dissipation, the blower also stops the operation and ends the operation in the heat storage heating mode. In this way, the heat storage heating mode can also be operated by a method in which only the flue gas is heated to increase the amount of heat storage and a part of the air flow blown out by the blower is supplied to the burner as combustion air.

Next, in the heat storage combustion heating mode, the combustion exhaust gas of the burner first heats and stores heat in the tubular portion of the heat storage portion and exchanges heat at the top surface portion. Then, it flows out from the combustion exhaust gas outlet as warm air. In this way, the combustion exhaust gas heats and stores heat from the inner circumference. Further, in the heat storage heating mode, the burner stops the operation, and the blower has the effect of continuing the operation and radiating heat from the outer periphery of the heat storage section by the indoor air blown in to efficiently heat the air to warm air.

According to a second aspect of the present invention, the heat storage section is provided with a vertical tubular portion and a top surface portion so as to close the upper end thereof, and the upper end of the tubular portion is in the same direction as the hot air outlet of the device. It has a combustion exhaust gas outlet that is open at the bottom and a heat storage combustion cylinder that has a burner at the bottom of the tubular part of the heat storage part.In the heat storage combustion heating mode, the combustion exhaust gas is insulated by the cover to store heat. First, the tubular portion of the portion is heated and stored, and the top surface portion also exchanges heat and flows out as hot air from the combustion exhaust gas outlet. Also, in the heat storage heating mode, the lower end of the cover is opened while being insulated by the cover, so heat is appropriately dissipated while being suppressed, and indoor air blown by the blower radiates heat from the outer periphery of the heat storage unit to create warm air. Heat is exchanged. If the dimension L of the space between the heat storage unit and the cover is selected in this way, heat is efficiently stored by the cover in the heat storage combustion heating mode, and heat is efficiently stored. In the heat storage heating mode, the cover is heat-insulated to suppress the optimum heat dissipation state. However, it has the effect of radiating heat from the outer circumference and exchanging the indoor air with warm air.

Further, according to a third aspect of the present invention, the outer periphery of the heat storage portion that radiates heat by the indoor air blown by the blower and exchanges heat with warm air is covered with a cover at a certain interval L, and the tubular portion of the heat storage portion is further covered. In the heat storage combustion heating mode, the flue gas is thermally insulated by the cover so that the tubular part of the heat storage part first heats and stores heat, and the top face part. Also exchanges heat and flows out as hot air from the combustion exhaust gas outlet. Further, in the heat storage heating mode, while the heat radiation state is suppressed by the heat insulation of the cover, the indoor air blown by the blower radiates heat from the outer periphery of the heat storage unit and exchanges heat with warm air. In this way, since the lower end of the heat insulating performance of the cover is closed, it can be easily estimated in proportion to the space dimension L between the heat storage section and the cover, and therefore the dimension L can be easily selected. In the heat storage combustion heating mode, heat is efficiently stored by being insulated by the cover, and in the heat storage heating mode, heat is radiated from the outer periphery and heat can be exchanged with warm air from the outer periphery while suppressing the heat radiation by the heat insulation of the cover. Have.

The invention according to claim 4 covers the outer periphery of the heat storage portion, which radiates heat by the indoor air blown by the blower and exchanges heat with warm air, with a cover at a certain distance L, and at the lower end of the tubular portion of the heat storage portion. In the heat storage heating mode, the air inlet is opened by the driving force and a part of the room air blown by the blower is covered with the outer periphery of the heat storage part and the cover is also provided. Since the indoor air directly exchanges heat with the outer periphery of the heat storage section in order to be introduced into the air passage covered with, there is an effect that the heat storage amount can be efficiently exchanged with warm air.

Further, according to a fifth aspect of the present invention, the indoor air blown by the blower is formed by covering the outer periphery of the heat storage portion at a certain distance L and opening the lower end with a driving force into a gap formed by the cover and the heat storage portion. A heat storage combustion cylinder is provided with an air inlet for introducing a part of the above to heat-exchange with the hot air, and a heat storage hot air outlet for blowing the hot air into the void portion located on the top surface. Since a part of the indoor air is blown by the hot air blower for the heat storage unit to the void layer in which the outer circumference of the heat storage unit is covered with the cover at a certain distance L, the indoor air directly exchanges heat with the outer periphery of the heat storage unit. Moreover, there is an effect that the amount of air for heat exchange can be appropriately secured, and the amount of heat storage can be efficiently exchanged with warm air.

Further, in the invention according to claim 6, a part of the indoor air is blown to a gap formed by the cover and the heat storage part, which covers the outer periphery of the heat storage part at a certain distance L and the lower end is also closed, and warm air is blown. A heat storage part warm air blower for heat exchange is provided, and a heat storage combustion cylinder having a heat storage hot air blowout port that blows out hot air is provided in the gap portion located on the top surface part, and in the heat storage heating mode, Since the movable louver controls the air volume so that the temperature of the hot air at the hot air outlet becomes constant, the amount of air that is based on the combustion heat of the burner is used as the reference for the amount of heat stored in the heat storage section in the heat storage heating mode. The air volume can be efficiently controlled up to the air volume for obtaining the temperature, and the hot air temperature can be kept constant in a wide control range in response to the increase or decrease in the heat storage amount.

Further, the invention according to claim 7 is such that the hot air outlet is provided with a movable louver for controlling the air volume in order to keep the hot air temperature constant in the heat storage heating mode. In the heat storage heating mode, the warm air temperature is kept constant in response to the decrease in the heat storage amount in the heat storage unit.Therefore, the air flow rate of the blower is reduced, and from the controllable minimum air flow rate, the movable louver installed at the hot air outlet To further reduce the air flow rate, and when the heat storage amount further decreases, the blower is stopped, so a predetermined warm air temperature is obtained from the air flow rate based on the combustion heat amount of the burner, based on the heat storage amount of the heat storage section in the heat storage heating mode. Therefore, it has an effect that the air volume can be controlled more efficiently up to the air volume.

In the eighth aspect of the invention, the control unit keeps the warm air temperature constant in response to the decrease in the heat storage amount of the heat storage unit in the heat storage heating mode, so that the air flow rate of the blower is reduced.
From the minimum controllable air volume, the air volume is controlled further by the movable louver installed at the hot air outlet, and when the heat storage amount further decreases, the control unit that stops the blower is provided. The temperature of the heat storage unit detected by the heat storage unit temperature sensor is estimated as the temperature of the hot air, and if it is higher than the set value, the blower also operates to increase the air volume, and the air volume of the blower also decreases in response to the decrease in the heat storage amount. Since the blower is stopped below the controllable minimum air volume, it has an effect that the warm air temperature can be made substantially constant by the surrogate estimation of the heat storage unit temperature.

Further, the invention according to claim 9 is configured such that the temperature of the heat storage part detected by the heat storage part temperature sensor is estimated as the hot air temperature, and a control part for controlling the blower so as to be within a set range is provided. The operation is the same as in claim 8.

The first embodiment of the present invention will be described below with reference to FIG. 1 is a sectional view of a heat storage combustion heating device according to a first embodiment of the present invention.

In FIG. 1, reference numeral 11a denotes a heat storage combustion cylinder, which is a combustion exhaust gas for heating and storing heat from the inner peripheral side during combustion, and radiates heat from the outer periphery during combustion stop to exchange indoor air with warm air and a burner. It is composed of a combustion cylinder 3b for burning 2. 1
0b is a control unit that operates the burner 2 and the blower 5 to heat and store the heat storage unit 8b, and then blows out as warm air in a heat storage combustion heating mode, in which indoor air is heat-exchanged with only the heat storage amount of the heat storage unit 8b. Selectively control the heat storage heating mode.

The operation of the above configuration will be described. When the combustion heating mode is selected, the control unit 10b burns the burner 2 and operates the blower 5. The combustion exhaust gas from the burner 2 heats and stores heat in the heat storage section 8a from the inner peripheral side, flows out from the heat storage combustion tube 11, and reaches the mixing section 7. The air flow supplied from the blower 5 and the combustion exhaust gas are mixed in the mixing section 7, and are blown out from the warm air outlet 9 as warm air suitable for heating.

On the other hand, when the control unit 10b selects the heat storage heating mode, the burner 2 stops operating, the blower 5 continues operation, radiates heat from the outer periphery of the heat storage unit 8b, and heats the indoor air to warm air. . Further, when the heat storage unit 8b lowers to the set temperature due to heat dissipation, the blower 5 also stops its operation and ends the operation of the heat storage heating mode.

In this way, the heat storage heating mode can also be operated by a method of heating only the combustion exhaust gas to increase the amount of heat storage and supplying a part of the air flow blown by the blower 5 to the burner 2 as combustion air. become.

Next, a second embodiment of the present invention will be described with reference to FIG. 2 is a sectional view of a heat storage combustion heating device according to a second embodiment of the present invention. The difference between the second embodiment and the first embodiment is that the heat storage part has a vertical cylindrical part and a top surface part 15 so as to close the upper end thereof, and the warm air of the device is further provided at the upper end of the cylindrical part. The combustion exhaust gas outlet 16 opened in the same direction as the outlet is provided, and the heat storage combustion tube 3b provided with the burner 2 is provided below the tubular portion of the heat storage portion 8c.

According to the second embodiment, the combustion exhaust gas of the burner 2 in the heat storage combustion heating mode is the tubular portion 1 of the heat storage portion 8c.
4 is first heated and stored, and the top surface portion 15 is also heated and stored. Then, it flows out from the combustion exhaust gas outlet 16 as warm air. In this way, the combustion exhaust gas heats and stores heat from the inner circumference. Further, in the heat storage heating mode, the burner 2 stops operation, and the blower 5 continues operation and heat is radiated from the outer periphery of the heat storage section 8c by the indoor air blown to be efficiently heated to warm air.

Next, a third embodiment of the present invention will be described with reference to FIG. 3 is a sectional view of a heat storage combustion heating device according to a third embodiment of the present invention. The third embodiment differs from the first embodiment in that the cover 17 covers the outer periphery of the heat storage portion 8c that radiates heat by the indoor air blown by the blower 5 and exchanges heat with the hot air at a certain dimension L. The cover 17 located at the lower end of the tubular portion of the heat storage section 8c is provided with an open heat storage combustion tube 11c.

According to the third embodiment, in the heat storage combustion heating mode, the combustion exhaust gas is air-insulated by the cover 17 so that the cylindrical portion 14 of the heat storage portion 8c is first heated and stored, and then the top surface portion 15 is used.
Also heats up and stores heat, and flows out from the combustion exhaust gas outlet 16 as warm air. Further, in the heat storage heating mode, since the lower end 18 of the cover 17 is open while being thermally insulated by the cover 17, the heat is appropriately dissipated while being suppressed, and the indoor air blown by the blower 5 causes the heat from the outer periphery of the heat storage unit 8c. It radiates heat and exchanges heat with warm air. If the dimension L of the space between the heat storage section 8c and the cover 17 is selected in this way, the cover 17 in the heat storage combustion heating mode performs air heat insulation, so that heat is efficiently stored, and in the heat storage heating mode, the heat insulation of the cover 17 is optimal. It is possible to radiate heat from the outer periphery while suppressing the heat dissipation state and to exchange heat of the room air with warm air.

Next, a fourth embodiment of the present invention will be described with reference to FIG. 4 is a sectional view of a heat storage combustion heating device according to a fourth embodiment of the present invention. The difference between the fourth embodiment and the first embodiment is that the outer periphery of the heat storage section 8c that radiates heat by the indoor air blown by the blower 5 and exchanges heat with warm air is covered with a cover 17a at intervals of a certain dimension L. The heat storage combustion cylinder 11d is provided so that the portion of the cover 17a located at the lower end of the cylindrical portion of the heat storage portion 8c is also closed.

According to the fourth embodiment, in the heat storage combustion heating mode, the combustion exhaust gas is thermally insulated by the cover 17a so that the tubular portion 14 of the heat storage portion 8c is first heated and stored, and the top surface portion 15 also exchanges heat with the combustion exhaust gas. The hot air flows out from the outlet 16. Further, in the heat storage heating mode, while the heat radiation state is suppressed by the heat insulation of the cover 17a, the indoor air blown by the blower 5 radiates heat from the outer periphery of the heat storage portion 8c and exchanges heat with warm air. Since the lower end 18a of the cover 17a is closed as described above, it can be easily estimated in proportion to the distance L between the heat storage section 8c and the cover 17a.
Selection of the dimension L becomes easy. In the heat storage combustion heating mode, heat is efficiently stored by being insulated by the cover 17a,
In the heat storage heating mode, the heat of the indoor air can be exchanged for warm air by radiating heat from the outer circumference while suppressing the heat radiating state by the heat insulation of the cover 17a.

Next, a fifth embodiment of the present invention will be described with reference to FIG. 5 is a sectional view of a heat storage combustion heating device according to a fifth embodiment of the present invention. The difference between the fifth embodiment and the first embodiment is that the outer periphery of the heat storage section 8c is covered with a space of a certain dimension L and the lower end is closed, and a gap 19 formed by the cover 17b and the heat storage section 8c is opened by a driving force. An air inlet 20 for introducing a part of the indoor air blown by the blower 5 to exchange heat with the hot air is provided, and a heat storage hot air outlet 21 for blowing the hot air is provided in a space 19 located in the top surface portion 15. The heat storage combustion cylinder is provided.

According to the fifth embodiment, in the heat storage heating mode, the air introduction port 20 is opened by the driving force, and a part of the room air blown by the blower 5 is covered with the outer periphery of the heat storage portion 8c and the cover 17b.
Introduced into the air gap 19 created by, the heat is exchanged with the heat storage portion 8c to warm air, and the heat is transferred to the portion of the air gap 19 located in the top surface portion 15 and flows out from the heat storage hot air outlet 21. In this way, since the indoor air directly exchanges heat with the outer periphery of the heat storage section, the amount of stored heat can be efficiently exchanged with warm air.

Next, a sixth embodiment of the present invention will be described with reference to FIG. 6 is a sectional view of a heat storage combustion heating device according to a sixth embodiment of the present invention. The difference between the sixth embodiment and the first embodiment is that a part of the indoor air is blown into a space formed by covering the outer circumference of the heat storage unit at a certain distance L and also closing the lower end of the cover and the heat storage unit. The heat storage section warm air blower for exchanging heat with the hot air is provided, and the heat storage combustion tube is provided with the heat storage hot air blowout port that blows out the hot air in the void portion located on the top surface.

In FIG. 6, reference numeral 11f denotes a heat storage combustion cylinder, which covers the outer circumference of the heat storage portion 8c with a cover 17c at an interval of a certain dimension L, and also closes the lower end 18c, into a space 19 formed by the heat storage portion 8c and the cover 17c. A heat storage unit hot air blower 22 that blows a part of the indoor air to exchange heat with the hot air is provided, and a heat storage hot air blowout port 21 that blows the hot air is provided in the void portion located on the top surface.

According to the sixth embodiment, in the heat storage heating mode, indoor air is blown by the heat storage unit hot air blower 22 into the space 19 formed by the outer circumference of the heat storage unit 8c and the cover 17c, and the heat storage unit 8c and the warm air are blown. The space 1 that is located on the top surface portion 15 by exchanging heat with
It moves to the portion 9 and flows out from the heat storage hot air outlet 21. In this way, the indoor air directly exchanges heat with the outer circumference of the heat storage section 8c, and an appropriate amount of air for heat exchange can be secured, so that the amount of heat storage can be efficiently exchanged with warm air.

Next, a seventh embodiment of the present invention will be described with reference to FIG. FIG. 7: is sectional drawing of the heat storage combustion heating apparatus of the 7th Embodiment 7 of this invention. The seventh embodiment differs from the first embodiment in that the hot air outlet 9 is provided with a movable louver 23 that controls the air volume to keep the hot air temperature constant in the heat storage heating mode. It is in.

According to the seventh embodiment, in the heat storage heating mode, the control unit 10e detects the temperature of the hot air exchanged by the heat storage unit 8c with the hot air temperature sensor 24, and if it is higher than the set value,
The movable louver 23 is further opened to increase the air volume to the set value, and when the heat storage amount decreases and the warm air temperature decreases, the movable louver 23 is closed correspondingly. Reduce the air volume. Furthermore, if the heat storage amount decreases and the hot air temperature decreases, and the set value cannot be reached unless it is less than the minimum controllable air flow for closing, the air will be completely closed. In this way, the air volume can be controlled, and the warm air temperature can be kept constant in a wide control range in response to the increase / decrease in the heat storage amount.

Next, an eighth embodiment of the present invention will be described with reference to FIGS. 8 and 9. 8 is a sectional view of a heat storage combustion heating device according to an eighth embodiment of the present invention, and FIG. 9 is an operation sequence diagram. The difference between the eighth embodiment and the first embodiment is that the control unit 105 has a heat storage unit 8c in the heat storage heating mode.
In order to keep the hot air temperature constant in response to the decrease in the heat storage amount of
When the air volume of the blower 5 is reduced and the air volume is less than the controllable minimum air volume, the air volume is controlled to be smaller by the movable louver 23 provided in the hot air outlet 9, and the heat storage amount is further reduced.
The control unit 10f for stopping the blower 5 is provided.

According to the eighth embodiment, in the heat storage heating mode, the control unit 10f detects the temperature of the hot air exchanged in the heat storage unit 8c by the hot air temperature sensor 24, and if it is higher than the set value,
If the air volume of the blower 5 is increased, and if it is higher, the movable louver 23 is opened to increase the air volume to a set value, and when the heat storage amount decreases and the warm air temperature decreases, the blower 5 The amount of airflow is reduced, and if it is less than the controllable minimum airflow, the airflow is controlled to be smaller by the movable louver 23 provided in the warm air outlet 9, and when the heat storage amount further decreases, the blower 5 is stopped. In this way, the air volume can be controlled, and the warm air temperature can be kept constant in a wide control range in response to the increase / decrease in the heat storage amount.

Next, a ninth embodiment of the present invention will be described with reference to FIG. FIG. 10: is sectional drawing of the heat storage combustion heating apparatus of Embodiment 9 of this invention. The difference between the ninth embodiment and the first embodiment is that the temperature of the heat storage unit 8c detected by the heat storage unit temperature sensor 25 is estimated as the temperature of the hot air, and the control unit 10g that controls the blower 5 to be within the set range. Is provided.

According to the ninth embodiment, in the heat storage heating mode, when the temperature of the heat storage unit 8c detected by the heat storage unit temperature sensor 25 is higher than the set value, the control unit 10g increases the air volume of the blower 5 to set the value. When the heat storage amount decreases and the warm air temperature decreases, the air amount of the blower 5 is correspondingly decreased. If the set value is not reached unless the blower 5 has a controllable minimum air volume, the blower 5 is stopped.

In this way, the warm air temperature can be made substantially constant by the surrogate estimation of the heat storage section temperature.

[0044]

As described above, according to the present invention, the heat storage combustion heating device heats and stores heat from the inner peripheral side with high temperature combustion exhaust gas during combustion, and radiates heat from the outer periphery during combustion stop to warm indoor air. A heat storage combustion cylinder consisting of a heat storage part that exchanges heat with a burner and a combustion cylinder that burns a burner, a burner and a blower are operated to heat and store heat in the heat storage part, and then a heat storage combustion heating mode in which it blows out as warm air, indoor air is stored as heat. When the combustion heating mode is selected, the control unit operates the burner and the blower to burn the indoor space by burning the heat. The heat of the air is exchanged for warm air, and at the same time, the heat storage part is also heated and stored from the inner circumference by the combustion exhaust gas of the burner. When the heat storage heating mode is selected, the burner stops operation, the blower continues operation, and heat is radiated from the outer periphery of the heat storage unit to heat the indoor air to warm air.
Further, when the heat storage unit lowers the set temperature due to heat dissipation, the blower also stops the operation and ends the operation in the heat storage heating mode. In this way, it is possible to operate in the heat storage heating mode even with the method of heating only the combustion exhaust gas to increase the amount of heat storage and supplying a part of the air flow blown by the blower to the burner as combustion air. is there.

Next, according to the present invention, the heat storage portion is provided with a vertical tubular portion and a ceiling surface portion so as to close the upper end thereof, and further, the combustion exhaust gas which is opened at the upper end of the tubular portion in the same direction as the hot air outlet of the device. By providing a blowout port and a heat storage combustion cylinder with a burner disposed below the tubular part of the heat storage part, the combustion exhaust gas of the burner in the heat storage combustion heating mode first heats the tubular part of the heat storage part. Heat is stored and heat is exchanged at the top. Then, it flows out from the combustion exhaust gas outlet as warm air. In this way, the combustion exhaust gas heats and stores heat from the inner circumference. Further, in the heat storage heating mode, the burner stops operation, and the blower continues operation, so that there is an effect that heat is efficiently radiated from the outer circumference of the heat storage section by the indoor air blown into the fan and efficiently heated to warm air.

Next, according to the present invention, the outer periphery of the heat storage portion that radiates heat by the indoor air blown by the blower and exchanges heat with warm air is covered with a cover at an interval of a certain dimension L, and further located at the lower end of the tubular portion of the heat storage portion. In the heat storage combustion heating mode, the combustion exhaust gas is thermally insulated by the cover and the tubular part of the heat storage part is first heated and stored, and the top surface part also performs heat exchange. Then, it flows out from the combustion exhaust gas outlet as warm air.

Further, in the heat storage heating mode, since the lower end of the cover is opened while being insulated by the cover, the heat is appropriately dissipated while being suppressed, and the heat is dissipated from the outer periphery of the heat storage part by the indoor air blown by the blower. Heat is exchanged with warm air.
If the dimension L of the space between the heat storage unit and the cover is selected in this way, heat is efficiently stored by the cover in the heat storage combustion heating mode, and heat is efficiently stored. In the heat storage heating mode, the cover is heat-insulated to suppress the optimum heat dissipation state. However, there is an effect that heat can be exchanged into warm air by radiating heat from the outer circumference.

Next, according to the present invention, the outer periphery of the heat storage portion that radiates heat by the indoor air blown by the blower and exchanges heat with the warm air is covered with a cover at a certain interval L, and the cover located at the lower end of the tubular portion of the heat storage portion. In the heat storage combustion heating mode, the flue gas is thermally insulated by the cover and the tubular part of the heat storage part is first heated and stored, and the top surface part also performs heat exchange. It flows out from the combustion exhaust gas outlet as warm air. Further, in the heat storage heating mode, while the heat radiation state is suppressed by the heat insulation of the cover, the indoor air blown by the blower radiates heat from the outer periphery of the heat storage unit and exchanges heat with warm air. In this way, since the lower end of the heat insulating performance of the cover is closed, it can be easily estimated in proportion to the space dimension L between the heat storage section and the cover, and therefore the dimension L can be easily selected.
In the heat storage combustion heating mode, heat is efficiently stored by being insulated by the cover, and in heat storage heating mode, the effect of being able to radiate heat from the outer periphery and heat exchange the indoor air with warm air while suppressing the optimal heat dissipation state by heat insulation of the cover. is there.

Next, according to the present invention, the outer circumference of the heat storage portion is set to a certain dimension L.
An air inlet for opening a gap formed by a cover and a heat storage unit whose lower end is also closed by a driving force, and introducing a part of indoor air blown by a blower to exchange heat with warm air,
In the heat storage heating mode, the air introduction port is opened by the driving force and the blower blows out by using the heat storage combustion tube that has the heat storage hot air outlet that blows out warm air in the space located on the top Since a part of the indoor air is introduced into the outer periphery of the heat storage unit and the air passage covered with the cover, the indoor air directly exchanges heat with the outer periphery of the heat storage unit, so that the heat storage amount can be efficiently exchanged with warm air. There is an effect.

Next, according to the present invention, the outer circumference of the heat storage portion is set to a certain dimension L.
A heat storage part hot air blower that blows a part of the indoor air to exchange heat with warm air is provided in the gap formed by the cover and the heat storage part that are closed at the bottom and the heat storage part Heat storage that blows out warm air The heat storage combustion tube having a hot air blowout opening is provided, so that the outer circumference of the heat storage section has a certain dimension L.
Since part of the indoor air is blown by the hot air blower in the heat storage unit to the void layer covered by the cover at a certain interval, the indoor air directly exchanges heat with the outer circumference of the heat storage unit, and an adequate amount of air for heat exchange is secured. Therefore, there is an effect that the heat storage amount can be efficiently exchanged with warm air.

Next, according to the present invention, the warm air outlet is provided with a movable louver for controlling the air volume to keep the warm air temperature constant in the heat storage heating mode. In order to control the air volume so that the louver keeps the hot air temperature at the hot air outlet constant, a predetermined hot air temperature is set based on the heat storage amount in the heat storage heating mode from the air flow based on the combustion heat amount of the burner. There is an effect that the air volume can be efficiently controlled up to the air volume for obtaining, and the warm air temperature can be made constant in a wide control range in response to the increase or decrease of the heat storage amount.

Next, according to the present invention, the control unit keeps the warm air temperature constant in response to the decrease in the heat storage amount of the heat storage unit in the heat storage heating mode. Is a configuration in which a control unit that controls the air volume to a smaller value with a movable louver installed at the hot air outlet and that stops the blower when the heat storage amount further decreases is used in the heat storage heating mode. In order to keep the temperature of the warm air constant in response to the decrease in the amount of stored heat, the air volume of the blower is reduced, and from the controllable minimum air volume, the air volume is controlled to be smaller with the movable louver installed at the hot air outlet. When the heat storage amount further decreases, the air blower is stopped.Therefore, from the air flow amount based on the combustion heat amount of the burner to the air amount for obtaining the predetermined warm air temperature based on the heat storage amount of the heat storage section in the heat storage heating mode. Efficiently there is an effect that it is possible to control the air volume.

Next, according to the present invention, the temperature of the heat storage unit detected by the heat storage unit temperature sensor is estimated as the temperature of the hot air, and the control unit for controlling the blower so as to be within the set range is provided. The temperature of the heat storage unit detected by the heat storage unit temperature sensor is estimated as the temperature of the hot air, and if it is higher than the set value, the blower also operates to increase the air volume, and the air volume of the blower also decreases in response to the decrease in the heat storage amount. Since the blower is stopped below the controllable minimum air volume, there is an effect that the warm air temperature can be made substantially constant by the surrogate estimation of the heat storage unit temperature.

[Brief description of the drawings]

FIG. 1 is a partial sectional view of a heat storage combustion heating device according to an embodiment of the present invention.

FIG. 2 is a partial sectional view of a heat storage combustion heating device according to a second embodiment of the present invention.

FIG. 3 is a partial cross-sectional view of a heat storage combustion heating device according to a third embodiment of the present invention.

FIG. 4 is a partial sectional view of a heat storage combustion heating device according to a fourth embodiment of the present invention.

FIG. 5 is a partial sectional view of a heat storage combustion heating device according to a fifth embodiment of the present invention.

FIG. 6 is a partial sectional view of a heat storage combustion heating device according to a sixth embodiment of the present invention.

FIG. 7 is a partial sectional view of a heat storage combustion heating device according to a seventh embodiment of the present invention.

FIG. 8 is a partial sectional view of a heat storage combustion heating device according to an eighth embodiment of the present invention.

FIG. 9 is an operation sequence diagram of the heat storage combustion heating device according to the eighth embodiment of the present invention.

FIG. 10 is a partial sectional view of a heat storage combustion heating device according to a ninth embodiment of the present invention.

FIG. 11 is a partial cross-sectional view of a conventional heat storage combustion heating device.

FIG. 12 is a partial cross-sectional view of another conventional heat storage combustion heating device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Main body casing 2 Burner 3 Combustion cylinder 4 Combustion air port 4 5 Blower 6 Guide 6 7 Mixing section 8, 8a, 8b, 8c, 8d, 8e Heat storage section 9 Warm air outlet 10, 10b, 10c, 10e Control section 11, 11a, 11c, 11d, 11e, 11f Heat storage combustion cylinder 12 Heat insulation part 13 Burner blower 14 Cylindrical part 15 Top surface part 16 Combustion exhaust gas outlet 17, 17a, 17b, 17c Cover 18, 18a, 18b, 18c Lower end 19 of cover Void 20 Air Inlet 21 Heat Storage Hot Air Blowout 22 Heat Storage Hot Air Blower 23 Movable Louver 24 Hot Air Temperature Sensor 25 Heat Storage Temperature Sensor

Claims (9)

[Claims] 1. A blower for inhaling and blowing out indoor air, a burner, and a passage through which combustion exhaust gas of this burner passes, and during combustion, high temperature combustion exhaust gas heats and stores heat from the inner peripheral side to stop combustion. Inside, a heat storage unit that radiates heat from the outer circumference by the indoor air blown by the blower and exchanges heat with warm air, a heat storage combustion cylinder equipped with this heat storage unit and a burner, and warm air blows out of the device from the device. A hot air outlet, a burner and a blower are operated, and the combustion exhaust gas after heating and storing heat in the heat storage section is mixed with the indoor air that has flowed in from the air inlet opening and blown out as warm air, a heat storage combustion mode of the burner. The operation is stopped, and the heat storage combustion heating device is configured by a control unit that selectively controls a heat storage heating mode in which the indoor air that has flowed in from the air inlet opening is heat-exchanged with the stored heat amount of the heat storage unit into warm air. . 2. A heat storage combustion cylinder, wherein a heat storage section is provided with a vertical cylindrical portion and a ceiling portion so as to close the upper end thereof, and further, a combustion opening at the upper end of the cylindrical portion in the same direction as the hot air outlet of the device. The heat storage combustion heating device according to claim 1, wherein an exhaust gas outlet is provided, and a burner is arranged below a tubular portion of the heat storage portion. 3. A heat storage combustion cylinder is located at the lower end of the cylindrical portion of the heat storage section, which covers the outer circumference of the heat storage section which radiates heat by the indoor air blown out by a blower and exchanges heat with warm air with a cover of a certain distance L. The heat storage combustion heating device according to claim 1, wherein the cover portion is also opened. 4. The heat storage combustion cylinder is located at the lower end of the cylindrical portion of the heat storage unit, and covers the outer circumference of the heat storage unit that radiates heat by the indoor air blown out by the blower and exchanges heat with warm air with a cover of a certain size L. The heat storage combustion heating device according to claim 1, wherein the cover portion is also closed. 5. The heat storage combustion cylinder has a dimension L around the outer circumference of the heat storage section.
An air inlet for opening a gap formed by a cover and a heat storage unit whose lower end is also closed by a driving force, and introducing a part of indoor air blown by a blower to exchange heat with warm air,
The heat storage combustion heating device according to claim 1, wherein a heat storage hot air blowout port for blowing warm air is provided in a gap portion located on the top surface portion. 6. A heat storage combustion cylinder has a dimension L along the outer periphery of a heat storage section.
A heat storage part hot air blower that blows a part of the indoor air to exchange heat with warm air is provided in the gap formed by the cover and the heat storage part that are closed at the bottom and the heat storage part The heat storage hot air blown out port is provided to blow out warm air.
A heat storage combustion heating device according to claim 1. 7. The heat storage combustion heating apparatus according to claim 1, wherein the hot air outlet is provided with a movable louver for controlling an air volume to keep the temperature of the hot air constant in the heat storage heating mode. 8. The control unit keeps the temperature of the warm air constant in the heat storage heating mode in response to the decrease in the heat storage amount of the heat storage unit, so that the air flow of the blower is reduced, and the hot air is blown from the controllable minimum air flow or less. The heat storage combustion heating apparatus according to claim 1, wherein the movable louver provided at the mouth further controls the air volume to be small, and when the heat storage amount further decreases, the blower is stopped. 9. The heat storage combustion heating apparatus according to claim 1, wherein the control section estimates the temperature of the warm air, which has been sent to the heat storage section and exchanged heat, by the temperature of the heat storage section.