CN201014528Y

CN201014528Y - Energy-saving heating boiler

Info

Publication number: CN201014528Y
Application number: CNU2007200051278U
Authority: CN
Inventors: 姜仲国
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-02-13
Filing date: 2007-02-13
Publication date: 2008-01-30
Anticipated expiration: 2017-02-13

Abstract

The utility model relates to an energy-saving heating boiler, including a boiler body, a combustion chamber, a smoke outlet, a flue, a fuel inlet, an ash removal port, a water outlet, a water return port and a boiler grate, wherein, the boiler body is a dual-layer structure, the flue includes a chimney, the chimney is the dual-layer structure, the outer layers of the boiler body and the chimney are thermal insulation layers, second layers of the boiler body and the chimney are water storage layers, a choke water jacket which is used for full combustion of the fuel and can form the secondary combustion in the boiler body is arranged in the boiler body; one end of the flue is connected with the smoke outlet and is arranged at one side of the boiler body, and the water outlet is arranged on the flue. The utility model has small size and simple structure, which can be used for heating, make use of the waste heat for burning the fire kang and improve the utilization ratio of the temperature which is emitted during the combustion of the combustibles; the utility model expands the scope of the combustibles, the coal, the straw and other wastes of the agricultural crops can be burned, so as to reduce the cost of the users; the utility model can make full use of the energy, which can carry out the secondary use of various combustible gases which are emitted during the combustion of the fuel.

Description

A kind of energy-saving heating boiler

Technical field

The utility model relates to a kind of heating boiler, refer in particular to a kind of energy-conservation, can the dual-purpose heating boiler of a stove, belong to the technical field of heating boiler.

Background technology

The problem of winter heating is that people have problem to be solved for many years, and the structure of heating stove has and structure carried out improved for fuel savings also in constantly upgrading, and has and structure is carried out improved in order to increase functional effect, specifically asks for an interview following documents:

Documents 1, a kind of efficient non-pressure heating boiler is disclosed in the Chinese patent literature of the patent No. 94217766.5, has pot, burner hearth, fire grate, water inlet, delivery port, water return outlet, exhaust outlet, coal filling hole, flue, the inner wall of upper furnace is fitted with many Super-conductive conduits along circumference, hypomere is respectively in pot and burner hearth on it, hot-water line communicates in burner hearth and with pot, upper furnace and flue corresponding position are provided with a heat reflection water tank, the heat reflection water tank has water inlet pipe and outlet pipe and pot to communicate respectively, lower furnace portion is provided with upper fire-grating and lower fire grating, and a secondary coal filling hole.Solve existing nothing and pressed the low problem of the heating boiler thermal efficiency.The heating boiler of this structure is provided with two coal filling holes in order to increase the thermal efficiency in boiler, fundamentally do not solve the problem of energy savings, causes the waste of the energy to a certain extent.And what the coal filling hole of this boiler adopted is conventional design, is arranged on the sidewall middle part and the bottom of boiler, is applicable to medium-sized or large-scale boiler structure.

Documents 2, a kind of home honeycomb briquette heating boiler is disclosed in the Chinese patent literature of the patent No. 99254966.3, it comprises interlayer body of heater, water return outlet, delivery port, flue, is located at the horizontal water tube of upper of furnace body and is located at independent movably Honey-comb briquet stove in the burner hearth.This miniature boiler had both overcome the diffusing inefficient shortcoming of coal combustion of existing burning, had overcome the low shortcoming of the existing honeycomb briquette thermal efficiency again.This boiler can be provided with 2-3 burner hearth according to family expenses area size based on heating, and easy for installation, floor space is little.Can shift out stove and accessory summer, the use of cooking separately.This boiler is to be exclusively used in the active type boiler that burns coal, and is different with the boiler structure that is proposed in the utility model.

Documents 3, the patent No. is to disclose a kind of multi-functional smoke prevention and dust control boiler in 200420116236.3 the Chinese patent literature, include a body of heater, water inlet, delivery port, coal feed point, ash hole, combustion chamber, ash-pit, smokestack and the air exhauster that links to each other with smokestack, it is characterized in that the below coiling of described smokestack is serially connected with a plurality of flues, wherein the flue top of top is connected with air exhauster, be equiped with a valve therebetween, the middle part of this flue is connected with smokestack, be equiped with a valve therebetween, the flue of lowermost end is communicated with the combustion chamber; Stretch out outside the body of heater lower end of described each flue, and offer the dedusting mouth, and the left and right dedusting mouth of the flue of lowermost end place all is equiped with heater, is equiped with the dedusting flap on remaining dedusting mouth; Described dedusting flap is threaded with the dedusting mouth; This heater all parallel connection is equiped with a flue gas switching by-pass valve control.The utility model fire coal can fully burn, and offers the dedusting mouth in the bottom of each flue, so that dedusting fast, can be used for heats up water cooks, and has the feature of environmental protection.

Documents 4, the patent No. is to disclose a kind of high effective smokeless boiler in 200520078296.5 the Chinese patent literature, its major technique characteristics are fixing interting to be provided with the contact area that the resistance dirt water jacket that is connected with furnace chamber enlarges furnace chamber and burner hearth in flue, improve the utilization rate of coal, alleviated environmental pollution.The utility model is simple in structure, low cost of manufacture, resistance dirt water jacket is divided into a plurality of combustion chambers with burner hearth, flue gas can burn in process of flowing repeatedly, can make bigger dust be subjected to hindering the dirt water jacket in the process of motion and stop and can hinder on the dirt water jacket attached to following one deck, and dust removing effects is very obvious, if also have unburned flue gas further fully to burn in the smoke box chamber, flue dust is burnt cmpletely, and the thermal efficiency is very high, thereby reaches the smokeless and dust free discharging.

And, what general heating boiler all adopted now is the design of direct combustion, its deficiency is: advance air from the bottom of boiler, the comburant time that liberated heat stops in stove when burning is short, and the various flammable flue gas and the dust that produce, waste heat directly enters chimney without any processing and discharges, coal smoke is excessive, imflammable gas fail secondary utilization, energy waste, a stove one usefulness, can only burn the matchmaker, fuel is single.These defectives all are further improved.

The utility model content

The utility model is for solving the deficiency and the shortcoming of existing boiler structure, and the purpose of this utility model is to provide a kind of novel structure, reclaims heat for four times, recycling energy-saving heating boiler.

For achieving the above object, the technical solution adopted in the utility model is as follows:

A kind of energy-saving heating boiler, comprise body of heater 1, be arranged on the combustion chamber 9 in the body of heater 1, be opened in the outlet flue 2 of body of heater 1 one sides, flue 3, what be opened in body of heater 1 top advances fuel port 4, what be opened in body of heater 1 one sides removes ashes mouth 5, delivery port 6, be arranged on the water return outlet 7 of body of heater 1 one sides, be arranged on the fire grate 10 of body of heater 1 inner bottom part, described body of heater 1 is a double-decker, described flue 3 comprises that one is used for the chimney 30 with the flue gas discharge, described chimney 30 is a double-decker, the skin of described body of heater 1 and chimney 30 is a heat-insulation layer 11, the second layer of described body of heater 1 and chimney 30 is a reservoir bed 12, is provided with one and is used for abundant combustion fuel in described body of heater 1, in body of heater, form the choke water jacket 13 of second-time burning; The side that is arranged on body of heater 1 that one end of described flue 3 links to each other with outlet flue 2 and stretches out, tilts, described delivery port 6 is arranged on the flue 3.

Described energy-saving heating boiler, described choke water jacket 13 is a platy structure, and the length of described choke water jacket 13 is less than the length of body of heater 1 longitudinal section, and the width of the width of described choke water jacket 13 and body of heater 1 longitudinal section is complementary; Be provided with vertical with body of heater 1 top board of described choke water jacket 13 is divided into two combustion chambers with body of heater 1: first combustion chamber 14 and second combustion chamber 15, described choke water jacket 13 is weldingly fixed on body of heater 1 top board.

Described energy-saving heating boiler, described choke water jacket 13 are fixed on body of heater 1 top board, and described choke water jacket 13 is a double-decker, and its opening communicates with the reservoir bed of body of heater 1, is full of water in described choke water jacket 13.

Described energy-saving heating boiler, the area of described first combustion chamber 14 are greater than the area of second combustion chamber 15, and described second combustion chamber 15 is positioned at a side at place, outlet flue 2 position.

Described energy-saving heating boiler, the angle of inclination is greater than 0 degree, less than 90 degree between described flue 3 and the ground; The water inlet end of described delivery port 6 communicates with the reservoir bed of flue 3, and described delivery port 6 is arranged on the extreme higher position on the flue 3.

Described energy-saving heating boiler, described flue 3 comprises resistance dirt water jacket 31, dedusting mouth 32, describedly be used for reclaiming the flue gas heat, stop the resistance dirt water jacket 31 that flue dust is discharged in the flue gas to be fixedly installed in the chimney 30, one end of described resistance dirt water jacket 31 is fixed on the inwall of chimney 30, the stiff end of described resistance dirt water jacket 31 communicates with reservoir bed in the flue 3, be full of water in the described resistance dirt water jacket 31, the bottom side of described flue 3 offers a dedusting mouth 32 of being convenient to reclaim dust in the flue gas, in the activity of the bottom of described dedusting mouth 32 one shape size and dedusting mouth coupling is set, can collect, the dedusting flap 33 of cleaning dust.

Described energy-saving heating boiler, the described bottommost that is opened in body of heater 1 except that ashes mouth 5, in described profile, the size and the stove gate device 50 that is complementary except that ashes mouth 5 profiles, size of except that ashes mouth 5, flexibly connecting, described stove gate device 50 is made up of inner wicket 501, outside gate 502 two parts, and described inner wicket 501 covers the space on fire grate 10 tops.

Described energy-saving heating boiler, skin at described outside gate 502 is provided with heat-insulation layer, offer the air fine setting hole 503, bottom that is used to regulate air inlet in the body of heater in the bottom at described outside gate 502, be used to regulate the bottom air fine setting blind patch 504 of air inflow size in the 503 peripheral flexible connections one of described bottom air fine setting hole, the external door panel at described outside gate 502 is provided with the door handle 505 that makes things convenient for door switch.

Described energy-saving heating boiler, advance to be movably equipped with on the fuel port 4 profile and advance fuel port 4 and be complementary described, area advances fuel flap 40 more than or equal to what advance fuel port 4, describedly advance fuel flap 40 and be provided with draw ring 401, enter to offer on the fuel flap 40 upper air fine setting hole 402, be used to regulate the upper air fine setting blind patch 403 of air inflow size in the 402 peripheral flexible connections one of described upper air fine setting hole.

Described energy-saving heating boiler, the bottom of described body of heater 1 is provided with brace table 8; The backwater end of described water return outlet 7 communicates with the reservoir bed 12 of body of heater 1, and described water return outlet 7 is arranged on the bottommost of body of heater 1, and described water return outlet 7 is arranged on one or more, and described water return outlet 7 is symmetricly set on the left and right sides of body of heater 1.

What the utility model was taked is down to advance air from the top, the flue that in body of heater, designed a secondary combustion chamber especially, is obliquely installed at the outlet flue place, like this comburant when burning by way of first combustion chamber, second combustion chamber, the flue that is obliquely installed, a heatable brick bed, the time that temperature is stopped in boiler is long.The flue gas that burning is produced, coal gas, when the flue that imflammable gas such as CO tiltedly are provided with is gone back to second combustion chamber once more, light at once, emit big calorimetric again, solve secondary and utilized problem, remaining temperature enters heated kang, remaining temperature and dust enter again in the flue that is obliquely installed, temperature is absorbed by the water in the resistance dirt water jacket in the flue once more, dust is deposited upon in the dedusting flap, three utilizations have been accomplished, solved the emission problem of dust again, the EGT of discharging from chimney at last is the highest to have only 20～30 to spend, basically smokeless, this part that will the be left flue gas that has a waste heat charges into and simmers a heatable brick bed in a heatable brick bed again, has accomplished four utilizations.It is excessive to have solved coal smoke, the energy waste problem.

The use the beneficial effects of the utility model are:

1, make full use of the energy, the cigarette that fuel can be emitted when burning and various combustible gas and waste heat are accomplished second-time burning, secondary utilization.Reduce gas purgings such as cigarette, coal gas, CO, dust.

2, enlarge the scope of comburant, burn coal less, burn stalk and wastes of crops more and reduce customer charge.

3, a stove is dual-purpose, and volume is little, in light weight, can warm oneself, and can utilize the waste heat a heatable brick bed that make a fire again, emits the utilization rate of temperature when improving the comburant burning.

Description of drawings

Fig. 1 is a stereochemical structure perspective view of the present utility model;

Fig. 2 is a vertical view of the present utility model;

Fig. 3 is that A-A among Fig. 2 is to cutaway view;

Fig. 4 is that B-B among Fig. 3 is to cutaway view;

The specific embodiment

Below by specific embodiment accompanying drawing in addition, the utility model is elaborated.

As shown in Figures 1 to 4, be the stereochemical structure perspective view of the utility model energy-saving heating boiler and the cutaway view of all directions, comprise body of heater 1, be arranged on the combustion chamber 9 in the body of heater 1, be opened in the outlet flue 2 of body of heater 1 one sides, flue 3, what be opened in body of heater 1 top advances fuel port 4, what be opened in body of heater 1 one sides removes ashes mouth 5, delivery port 6, be arranged on the water return outlet 7 of body of heater 1 one sides, be arranged on the fire grate 10 of body of heater 1 inner bottom part, described body of heater 1, flue 3 is a double-decker, the skin of body of heater 1 is a heat-insulation layer 11, the second layer of body of heater 1 be reservoir bed (be also referred to as: water jacket) 12, in described body of heater 1, be provided with one and be used for abundant combustion fuel, in body of heater, form the choke water jacket 13 of second-time burning; The side that is arranged on body of heater 1 that one end of described flue 3 links to each other with outlet flue 2 and stretches out, tilts, described delivery port 6 is arranged on the flue 3, described choke water jacket 13 is a platy structure, the length of described choke water jacket 13 is less than the length of body of heater 1 longitudinal section, and the width of the width of described choke water jacket 13 and body of heater 1 longitudinal section is complementary; Be provided with vertical with body of heater 1 top board of described choke water jacket 13 is divided into two combustion chambers with body of heater 1: first combustion chamber 14 and second combustion chamber 15, described choke water jacket 13 is weldingly fixed on body of heater 1 top board, described choke water jacket 13 is fixed on body of heater 1 top board, described choke water jacket 13 is a double-decker, its opening communicates with the reservoir bed of body of heater 1, in described choke water jacket 13, be full of water, the area of described first combustion chamber 14 is greater than the area of second combustion chamber 15, described second combustion chamber 15 is positioned at a side at place, outlet flue 2 position, usually, the area of second combustion chamber 15 accounts between the 1/3-1/6 of whole combustion chamber 9 areas, the angle of inclination is greater than 0 degree between described flue 3 and the ground, less than 90 degree, it is 50 degree that the best is provided with angle; The water inlet end of described delivery port 6 communicates with the reservoir bed of flue 3, described delivery port 6 is arranged on the extreme higher position on the flue 3, be set with one in the chimney 30 of described flue 3 and be used for reclaiming the resistance dirt water jacket 31 flue gas heat, that stop flue dust discharge in the flue gas, one end of described resistance dirt water jacket 31 is fixed on the inwall of chimney 30, the stiff end of described resistance dirt water jacket 31 communicates with reservoir bed in the flue 3, is full of water in the described resistance dirt water jacket 31; The bottom side of described flue 3 offers a dedusting mouth 32 of being convenient to reclaim dust in the flue gas, it is big or small and dedusting mouth coupling in the activity of the bottom of described dedusting mouth 32 one shape to be set, can collect, the dedusting flap 33 of cleaning dust, as shown in Figure 3, dedusting flap 33 is fixed on the flue 3 by screw, in addition, also can be with 33 clampings of dedusting flap, slip and be fixed on the flue 3, the described bottommost that is opened in body of heater 1 except that ashes mouth 5, be outside equipped with stove gate device 50 at the described ashes mouth 5 that removes, the size of described stove gate device 50 with remove ashes mouth 5 sizes and be complementary, described stove gate device 50 is by inner wicket 501, outside gate 502 two parts are formed, described inner wicket 501 covers the space on fire grate 10 tops, skin at described outside gate 502 is provided with heat-insulation layer, offer the air fine setting hole 503, bottom that is used to regulate air inlet in the body of heater in the bottom at described outside gate 502, the bottom air fine setting blind patch 504 that is used to regulate the air inflow size in the 503 peripheral flexible connections one of described bottom air fine setting hole, the external door panel at described outside gate 502 is provided with the door handle 505 that makes things convenient for door switch, advance to be movably equipped with on the fuel port 4 profile and advance fuel port 4 and be complementary described, area advances fuel flap 40 more than or equal to what advance fuel port 4, describedly advance fuel flap 40 and be provided with draw ring 401, entering to offer on the fuel flap 40 upper air fine setting hole 402, be used to regulate the upper air fine setting blind patch 403 of air inflow size in the 402 peripheral flexible connections one of described upper air fine setting hole, the bottom of described body of heater 1 is provided with brace table 8; The backwater end of described water return outlet 7 communicates with the reservoir bed 12 of body of heater 1, described water return outlet 7 is arranged on the bottommost of body of heater 1, described water return outlet 7 is arranged on one or more, perhaps, for the convenience of installing, described water return outlet 7 is in the bilateral symmetry layout of body of heater 1, as shown in Figure 3, Figure 4, when using the water return outlet 7 of a side, water return outlet 7 sealings of opposite side are not used.

Simply introduce operation principle of the present utility model below.In order to reach purpose of the present invention, the utility model is mainly taked four kinds of special design meanses:

1, the bottom of body of heater sealing, from top fuel inlet or advance fuel port upper part of the cover opening air intake, fuel enters the combustion chamber from the fuel port that advances on top, when burning, sufficient comburant oxygen to be arranged, seal following stove gate device, reduce the diffusion of dust in the boiler room, clean hygiene.

2, waste heat, cigarette and various imflammable gas enter second combustion chamber by returning under the flue that is obliquely installed, and the imflammable gas afterburnt is discharged by flue again, and the gas of discharge is smokeless substantially; Second combustion chamber, it is made up of part body of heater and choke water jacket, cigarette that is produced when the air that can be come in the top by the choke water jacket and fuel combustion and all gases are anti-down, send into second combustion chamber, the effect of second combustion chamber is that the useless cigarette, the waste gas that are produced during with primary combustion are done the utilization of second-time burning secondary;

3, offer the dedusting mouth in the flue bottom that is obliquely installed, resistance dirt water jacket is set in the flue pipeline, the interception dust, deposit seed, reduce the temperature of discharging gas once more, also slow down the speed of emission gases, flue is made up of chimney water jacket and resistance dirt water jacket, the effect of resistance dirt water jacket is that temperature and the dust that will enter after second combustion chambers burn stops, temperature is absorbed by the water in the water jacket, dust granule is precipitated, and the effect that water jacket is set in the chimney is: the one, and waste discharge gas, the 2nd, the time of staying of lengthening waste heat; The 3rd, prolong the water heat absorption time in the water jacket;

4, final gas waste-heat of discharging enters in the heated kang and utilizes once more, warms up a heatable brick bed, in order to make the waste gas that has waste heat, does not waste, utilizes, and waste gas is entered heated kang, makes it heat absorption heating, the highest 20-30 of the having only degree of exhaust temperature.

The flue of second combustion chamber and inclination is set in the utility model, imflammable gas, cigarette is reclaimed carry out second-time burning, the dust precipitation prolongs the temperature time of staying, and interior hot-water heating of unit interval promotes fast, basic smokeless emission.

One stove is dual-purpose, and the heating time waste heat of heating up water is supplied with heated kang and warm up a heatable brick bed, and offers dust simultaneously in the flue bottom and collect cover plate and collect dust, makes chimney when discharging waste gas, substantially smokelessly, free from dust, temperature 20-30 degree, and energy-conserving and environment-protective.

Exemplify the experimental data of the utility model two groups of embodiment in use below:

The appearance of this boiler has reached uses coal 1.5-2 ton (813 radiator 40-50 sheet) to go up hot-water heating degree 85 degree in year, following coolant-temperature gage 30-40 degree, and as adopting firewood and coal dual-purpose, year is consumed 1 ton in coal.

By practice, with this boiler erection indoor 80 square metres of heating areas, ceiling is high 2.7 meters apart from ground, and wall is a brick mix structure, and thick 370mm respectively is incubated 20mm for cement mortar inside and outside the metope.Door and window is aluminium alloy, single-glass, 60 of 813 radiators, and between environment temperature-5-+5, indoor temperature 16-18 degree, year consumption coal 1.5-2 ton is as adopting firewood and coal dual-purpose, year consumption coal 1-1.2 ton.

With this boiler erection indoor 60 square metres of heating areas, ceiling is high 2.7 meters apart from ground, and wall is a brick mix structure, and thick 370mm respectively is the cement mortar insulation inside and outside the metope, and thick 20mm, door and window are aluminium alloy, single-glass, 50 of 813 radiators.Between environment temperature-5-+5 degree, indoor temperature 17-19 degree, year consumption coal 1.2-2 ton is as adopting coal and firewood two purpose, 1 ton in year consumption coal.

Claims

1. energy-saving heating boiler, comprise body of heater (1), be arranged on the combustion chamber (9) in the body of heater (1), be opened in the outlet flue (2) of body of heater (1) one side, flue (3), what be opened in body of heater (1) top advances fuel port (4), what be opened in body of heater (1) one side removes ashes mouth (5), delivery port (6), be arranged on the water return outlet (7) of body of heater (1) one side, be arranged on the fire grate (10) of body of heater (1) inner bottom part, it is characterized in that: described body of heater (1) is a double-decker, described flue (3) comprises that one is used for the chimney (30) with the flue gas discharge, described chimney (30) is a double-decker, the skin of described body of heater (1) and chimney (30) is heat-insulation layer (11), the second layer of described body of heater (1) and chimney (30) is reservoir bed (12), is provided with one and is used for abundant combustion fuel in described body of heater (1), in body of heater, form the choke water jacket (13) of second-time burning; The side that is arranged on body of heater (1) that one end of described flue (3) links to each other and stretches out, tilts with outlet flue (2), described delivery port (6) is arranged on the flue (3).

2. energy-saving heating boiler according to claim 1, it is characterized in that: described choke water jacket (13) is a platy structure, the length of described choke water jacket (13) is less than the length of body of heater (1) longitudinal section, and the width of the width of described choke water jacket (13) and body of heater (1) longitudinal section is complementary; Described choke water jacket (13) is divided into two combustion chambers with vertical setting of body of heater (1) top board with body of heater (1): first combustion chamber (14) and second combustion chamber (15), described choke water jacket (13) are weldingly fixed on body of heater (1) top board.

3. energy-saving heating boiler according to claim 2, it is characterized in that: described choke water jacket (13) is fixed on body of heater (1) top board, described choke water jacket (13) is a double-decker, and its opening communicates with the reservoir bed of body of heater (1), is full of water in described choke water jacket (13).

4. energy-saving heating boiler according to claim 2 is characterized in that: the area of described first combustion chamber (14) is greater than the area of second combustion chamber (15), and described second combustion chamber (15) is positioned at a side at outlet flue (2) place, position.

5. energy-saving heating boiler according to claim 1 is characterized in that: the angle of inclination is greater than 0 degree, less than 90 degree between described flue (3) and the ground; The water inlet end of described delivery port (6) communicates with the reservoir bed of flue (3), and described delivery port (6) is arranged on the extreme higher position on the flue (3).

6. energy-saving heating boiler according to claim 1 or 5, it is characterized in that: described flue (3) comprises resistance dirt water jacket (31), dedusting mouth (32), describedly be used for reclaiming the flue gas heat, stop the resistance dirt water jacket (31) that flue dust is discharged in the flue gas to be fixedly installed in the chimney (30), one end of described resistance dirt water jacket (31) is fixed on the inwall of chimney (30), the stiff end of described resistance dirt water jacket (31) communicates with reservoir bed in the flue (3), be full of water in the described resistance dirt water jacket (31), the bottom side of described flue (3) offers a dedusting mouth (32) of being convenient to reclaim dust in the flue gas, in the bottom activity of described dedusting mouth (32) shape size and dedusting mouth coupling is set, can collect, the dedusting flap (33) of cleaning dust.

7. energy-saving heating boiler according to claim 1, it is characterized in that: the described bottommost that is opened in body of heater (1) except that ashes mouth (5), in described profile, the size and the stove gate device (50) that is complementary except that ashes mouth (5) profile, size of except that ashes mouth (5), flexibly connecting, described stove gate device (50) is made up of inner wicket (501), outside gate (502) two parts, and described inner wicket (501) covers the space on fire grate (10) top.

8. energy-saving heating boiler according to claim 7, it is characterized in that: the skin at described outside gate (502) is provided with heat-insulation layer, offer the air fine setting hole (503), bottom that is used to regulate air inlet in the body of heater in the bottom at described outside gate (502), peripheral flexible connection one is used to regulate the cover plate (504) of air inlet size in described bottom air fine setting hole (503), and the external door panel at described outside gate (502) is provided with the door handle (505) that makes things convenient for door switch.

9. energy-saving heating boiler according to claim 1, it is characterized in that: advance to be movably equipped with on the fuel port (4) profile and advance fuel port (4) and be complementary described, area advances fuel flap (40) more than or equal to what advance fuel port (4), describedly advance fuel flap (40) and be provided with draw ring (401), entering to offer on the fuel flap (40) upper air fine setting hole (402), peripheral flexible connection one is used to regulate the cover plate (403) of air inlet size in described upper air fine setting hole (402).

10. energy-saving heating boiler according to claim 1 is characterized in that: the bottom of described body of heater (1) is provided with brace table (8); The backwater end of described water return outlet (7) communicates with the reservoir bed (12) of body of heater (1), described water return outlet (7) is arranged on the bottommost of body of heater (1), described water return outlet (7) is arranged on one or more, and described water return outlet (7) is symmetricly set on the left and right sides of body of heater (1).