Small civil energy-saving boiler

Abstract

The utility model discloses a small civil energy-saving boiler which comprises a boiler body and a chimney, the boiler body is composed of an inner container and an outer shell, and a water jacket is formed between the inner container and the outer shell. A first combustion chamber is arranged on the front side in the furnace body, and a second combustion chamber is arranged on the rear side in the furnace body; the first combustion chamber is provided with a side furnace door opening, a front upper furnace door opening and a grate; a drawer type ash storage box is arranged at the lower part of the grate; the second combustion chamber is provided with a rear upper furnace door opening, a vertical heat exchange pipe and a transverse heat exchange pipe, and an ash outlet is formed in the bottom of the second combustion chamber; a smoke collecting box is arranged at the upper end of the chimney, a plurality of smoke and fire pipes are vertically arranged in the chimney, the lower ends of the smoke and fire pipes are communicated with the upper end of the second combustion chamber and the smoke collecting box, and a smoke outlet is formed in the upper portion of the smoke collecting box. The burner is simple in structure, convenient to use, sufficient in burning, high in heat efficiency and suitable for various fuels.

Description

Technical Field

[0001] The utility model belongs to the technical field of boilers, in particular to a small-sized civil energy-saving boiler. Background Art

[0002] At present, most civilian boilers use simple boilers, which include a water-jacketed furnace body, a combustion chamber and a chimney. This type of boiler has poor combustion conditions, incomplete fuel combustion, low thermal efficiency, and its smoke emission Greenman blackness is generally 3 to 4, resulting in energy waste and environmental pollution. In order to adapt to the living habits of farmers and herdsmen in rural pastoral areas, my country's patent 201720810259.1 discloses a cooking and heating stove, which has the functions of cooking, boiling water and winter heating. However, it has a complex structure, high production cost, and occupies a large space. Utility Model Content

[0003] The utility model aims to overcome the defects of the prior art and provide a small civilian energy-saving boiler which has the characteristics of simple structure, convenient use, sufficient combustion, high thermal efficiency and adaptability to a variety of fuels.

[0004] The technical scheme adopted by the utility model is: a small civilian energy-saving boiler, including a furnace body and a chimney composed of an inner tank and an outer shell, a water jacket is formed between the inner tank and the outer shell; the characteristics are: a first combustion chamber is arranged at the front side of the furnace body, and a second combustion chamber is arranged at the rear side of the furnace body; a side furnace door and a side furnace door are arranged at the front side of the first combustion chamber, a front upper furnace door and a front furnace cover are arranged at the upper part of the first combustion chamber, a furnace grate is arranged at the lower part of the first combustion chamber, and a drawer-type ash storage box is arranged at the lower part of the furnace grate; the second combustion chamber A rear upper furnace door and a rear furnace cover are provided in the middle and upper part, a plurality of vertical heat exchange tubes whose upper and lower ends are connected to the water jacket are vertically arranged in the front inner part of the second combustion chamber, a plurality of horizontal heat exchange tubes whose left and right ends are connected to the water jacket are horizontally arranged in the middle and rear part of the second combustion chamber, and an ash outlet and an ash outlet plug plate are provided at the left and right bottom of the second combustion chamber; a chimney is provided in the rear upper part of the second combustion chamber, a smoke collecting box is provided at the upper end of the chimney, a plurality of pyrotechnic tubes whose lower ends are connected to the second combustion chamber and the smoke collecting box are vertically arranged inside the chimney, and a smoke outlet is provided at the upper part of the smoke collecting box.

[0005] Preferably, the inner liner at the front lower part of the second combustion chamber is provided with a water jacket groove which is sunken upwards. This design increases the water flow channel at the lower end of the vertical heat exchange tube and improves the heat exchange efficiency.

[0006] Preferably, an explosion-proof valve is provided on the chimney. This design can prevent the explosion when the internal pressure of the boiler is too high, thus ensuring the safety of personnel.

[0007] Preferably, a pressure gauge is provided on the chimney, which is convenient for timely understanding of the internal pressure of the boiler.

[0008] Preferably, a temperature gauge is provided on the chimney, which makes it convenient to observe the boiler water temperature.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1) A second combustion chamber is provided at the rear side of the furnace body, and a plurality of vertical heat exchange tubes whose upper and lower ends are connected to the water jacket are vertically arranged in the front of the second combustion chamber. The front of the second combustion chamber is adjacent to the first combustion chamber, and the smoke ash is relatively large. The vertical heat exchange tubes are arranged to avoid the accumulation of smoke on the outer wall of the tube, which affects the heat absorption effect; a plurality of horizontal heat exchange tubes whose left and right ends are connected to the water jacket are arranged horizontally in the middle and rear part of the second combustion chamber. The smoke ash in the middle and rear part of the second combustion chamber is relatively small, and the problem of smoke accumulation on the tube wall is not considered. The contact area between the horizontal heat exchange tube and the smoke and fire is larger, and the heat absorption effect is good; a plurality of vertical heat exchange tubes and horizontal heat exchange tubes are arranged in the second combustion chamber, which increases the heat exchange area and improves the thermal efficiency of the boiler.

[0011] 2) Several pyrotechnic pipes are vertically arranged inside the chimney, with the lower end connected to the second combustion chamber and the upper end connected to the smoke collecting box. The vertical arrangement of the pyrotechnic pipes increases the heating area of ​​the water jacket and avoids the problem of ash accumulation.

[0012] 3) A grate is arranged at the lower part of the first combustion chamber. The entire lower part of the first combustion chamber is the grate. The grate has a large area and has a good effect of supplying air and oxygen, which is conducive to the full combustion of the fuel.

[0013] 4) It is equipped with side furnace doors, front upper furnace doors and rear upper furnace doors. The furnace of the first combustion chamber is relatively large, suitable for various biomass fuels such as coal, cow and sheep dung, plant straw, etc. The front upper furnace door and the rear upper furnace door can be used to heat the dining pot and kettle, which is convenient for boiling water and cooking.

[0014] 5) A drawer-type ash storage box is provided at the bottom of the grate. Pulling the drawer-type ash storage box out a certain distance can increase the air intake at the bottom of the furnace, and the boiler can burn with oxygen. Pushing the drawer-type ash storage box inward can close the air intake at the bottom of the furnace, and the fire-sealing function can be realized.

[0015] 6) An ash outlet and an ash outlet plug are provided on the left side and / or right side of the second combustion chamber, which can regularly clean the dust accumulated at the bottom of the second combustion chamber.

[0016] 6) The utility model has a simple overall structure and low cost, and is suitable for installation and use by residents in rural and pastoral areas for heating in winter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural diagram of a small-sized civil energy-saving boiler of the utility model;

[0018] Figure 2 It is a three-dimensional structural diagram of the inner tank of a small-sized civil energy-saving boiler of the utility model;

[0019] Figure 3 The utility model is a three-dimensional structural schematic diagram of a small-sized civil energy-saving boiler cut from the side.

[0020] In the figure: 1-furnace body, 2-chimney, 3-water jacket, 4-first combustion chamber, 5-second combustion chamber, 6-side furnace door, 7-side furnace door, 8-front upper furnace door, 9-front furnace cover, 10-grate, 11-drawer-type ash storage box, 12-rear upper furnace door, 13-rear furnace cover, 14-vertical heat exchange tube, 15-horizontal heat exchange tube, 16-ash outlet, 17-ash outlet plug board, 18-smoke collecting box, 19-pyrotechnic pipe, 20-smoke outlet, 21-water jacket groove, 22-explosion-proof valve, 23-pressure gauge, 24-temperature gauge. DETAILED DESCRIPTION

[0021] The following is a detailed description of the embodiments of the technical solution of the utility model in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and the protection scope of the utility model cannot be limited thereto. In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "middle", "upper", "lower", "front", "back", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0022] like Figures 1 to 3 As shown, a small civilian energy-saving boiler comprises a furnace body 1 and a chimney 2 consisting of an inner tank and an outer shell, a water jacket 3 is formed between the inner tank and the outer shell; a first combustion chamber 4 is provided at the front side of the furnace body 1, and a second combustion chamber 5 is provided at the rear side of the furnace body 1; a side furnace door 6 and a side furnace door 7 are provided at the front side of the first combustion chamber 4, a front upper furnace door 8 and a front furnace cover 9 are provided at the upper part of the first combustion chamber 4, a grate 10 is provided at the lower part of the first combustion chamber 4, and a drawer-type ash storage box 11 is provided at the lower part of the grate 10; a rear upper furnace door 11 is provided at the middle and upper part of the second combustion chamber 5 2 and the rear furnace cover 13, eight vertical heat exchange tubes 14 with upper and lower ends connected to the water jacket 3 are vertically arranged in the front of the second combustion chamber 5, and a number of horizontal heat exchange tubes 15 with left and right ends connected to the water jacket 3 are horizontally arranged in the middle and rear of the second combustion chamber 5. An ash outlet 16 and an ash outlet plug 17 are arranged at the bottom of the left side of the second combustion chamber 5; a chimney 2 is arranged at the upper rear of the second combustion chamber 5, and a smoke collecting box 18 is arranged at the upper end of the chimney 2. Six pyrotechnic tubes 19 with lower ends connected to the upper end of the second combustion chamber 5 and the smoke collecting box 18 are vertically arranged inside the chimney 2, and a smoke outlet 20 is arranged at the upper part of the smoke collecting box 18. The inner shell of the second combustion chamber 5 is provided with an upwardly concave water jacket groove 21. An explosion-proof valve 22, a pressure gauge 23, and a temperature gauge 24 are arranged on the chimney.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A small civilian energy-saving boiler, comprising a furnace body and a chimney composed of an inner tank and an outer shell, wherein a water jacket is formed between the inner tank and the outer shell; characterized in that: A first combustion chamber is provided on the front side of the furnace body, and a second combustion chamber is provided on the rear side of the furnace body; a side furnace door and a side furnace door are provided on the front side of the first combustion chamber, a front upper furnace door and a front furnace cover are provided on the upper part of the first combustion chamber, a grate is provided on the lower part of the first combustion chamber, and a drawer-type ash storage box is provided on the lower part of the grate; a rear upper furnace door and a rear furnace cover are provided on the middle and upper part of the second combustion chamber, a plurality of vertical heat exchange tubes whose upper and lower ends are connected to a water jacket are vertically arranged in the front part of the second combustion chamber, a plurality of horizontal heat exchange tubes whose left and right ends are connected to the water jacket are horizontally arranged in the middle and rear part of the second combustion chamber, and an ash outlet and an ash outlet plug are provided on the left and right bottom of the second combustion chamber; a chimney is provided on the rear and upper part of the second combustion chamber, a smoke collecting box is provided on the upper end of the chimney, a plurality of fireworks pipes whose lower ends are connected to the upper end of the second combustion chamber and the smoke collecting box are vertically arranged inside the chimney, and a smoke outlet is provided on the upper part of the smoke collecting box.

2. The small-sized civil energy-saving boiler according to claim 1 is characterized in that: The front lower inner liner of the second combustion chamber is provided with an upwardly concave water jacket groove.

3. The small-sized civil energy-saving boiler according to claim 2 is characterized in that: An explosion-proof valve is provided on the chimney.

4. The small-sized civil energy-saving boiler according to claim 3 is characterized in that: A pressure gauge is provided on the chimney.

5. The small-sized civil energy-saving boiler according to claim 4 is characterized in that: A temperature gauge is provided on the chimney.

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