CN209763499U

CN209763499U - air heating device of gas-fired hot water boiler

Info

Publication number: CN209763499U
Application number: CN201920319696.2U
Authority: CN
Inventors: 黄武; 陆屏; 张川
Original assignee: Shanghai Industrial Boiler (wuxi) Co Ltd
Current assignee: Shanghai Industrial Boiler (wuxi) Co Ltd
Priority date: 2019-03-13
Filing date: 2019-03-13
Publication date: 2019-12-10
Anticipated expiration: 2029-03-13

Abstract

the utility model relates to the technical field of hot water boilers, in particular to an air heating device of a gas-fired hot water boiler, which comprises a hot water boiler body and a burner, wherein the inner side of the left end of the hot water boiler body is fixedly connected with the outer side of the burner, the right end of the burner is communicated with a flue, the bottom end of the burner is connected with a heat conduction pipe, the outer side of the heat conduction pipe is fixedly connected with the inner side of the bottom end of the hot water boiler body, the left side and the right side of the bottom end of the heat conduction pipe are communicated with air pipes, the inner side of the heat conduction pipe is fixedly connected with a solenoid valve, the left end and the bottom side of the air pipes are communicated with a blower, the right end of the hot water boiler body is communicated with a hot water return pipe, in the utility model, the air heating of the inlet, the condensed water is prevented from corroding the flue, and the stable combustion of the fuel gas in the combustor is ensured.

Description

Air heating device of gas-fired hot water boiler

Technical Field

The utility model relates to a boiler technical field specifically is a gas boiler's air heating device.

Background

Gas boilers are often required to have an external FGR recycle system due to low emissions requirements. The smoke extraction point is generally between 150 and 200 ℃, when the external temperature is lower, a large amount of condensed water can be generated when low-temperature air is mixed with recirculated smoke, even if a drainage device is additionally arranged, the smoke flue at the smoke mixing part is still seriously corroded, and the air with water can also influence the stable combustion of the combustor. The air heating device of the gas-fired hot water boiler effectively utilizes hot water produced by the hot water boiler, does not need an additional heating device, and effectively solves the problem of flue corrosion at the mixing position of flue gas.

Chinese patent CN 103939935a discloses a boiler blower inlet air heating system, a blower inlet air heating system for steam boiler, but this patent still does not solve the technical problem of blower inlet air heating of hot water boiler, therefore, the demand for an air heating device of a gas-fired hot water boiler is increasing, and traditional gas-fired hot water boiler needs to heat water first to heat air, the hot air generating speed is slow, still can lead to microthermal air to produce the comdenstion water during short-term use, be unfavorable for the short-term intermittent use of boiler, therefore, an air heating device of gas-fired hot water boiler is proposed to the above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gas boiler's air heating device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

An air heating device of a gas-fired hot water boiler comprises a hot water boiler body and a burner, wherein the inner side of the left end of the hot water boiler body is fixedly connected with the outer side of the burner, the right end of the burner is communicated with a flue, the bottom end of the burner is connected with a heat conduction pipe, the outer side of the heat conduction pipe is fixedly connected with the inner side of the bottom end of the hot water boiler body, the left side and the right side of the bottom end of the heat conduction pipe are communicated with air pipes, the inner side of the heat conduction pipe is fixedly connected with an electromagnetic valve, the bottom side of the left end of the air pipe is communicated with an air feeder, the right end of the hot water boiler body is communicated with a hot water return pipe, the other end of the hot water return pipe is communicated with a heater outlet header, the top end of the heater outlet header is communicated, the utility model discloses a boiler, including governing valve, left end and the left end of governing valve, the top intercommunication of governing valve has the circulating pump, the left end intercommunication of circulating pump has the hot water outlet pipe, and the left end bottom side of hot water outlet pipe is linked together with the top left side of boiler body, the inboard fixedly connected with temperature sensor in top of boiler body, temperature sensor's top fixedly connected with controller, the outer end fixedly connected with of finned tube separates heat exchanger.

Preferably, the left end of the heat insulation shell is communicated with the right end of the air pipe, and the heat insulation shell is made of an aluminum oxide ceramic sheet.

Preferably, the front end face of the finned tube is arranged in a wavy manner, and the finned tube is made of an aluminum alloy plate.

Preferably, the left end of the combustor is communicated with a three-way check valve, the bottom end of the three-way check valve is communicated with the left end of the blower, and the top end of the three-way check valve is communicated with the left end of the flue.

Preferably, the center of the top left end surface of the hot water return pipe and the axis of the burner are located on the same horizontal line.

Compared with the prior art, the beneficial effects of the utility model are that:

1. The utility model discloses in, finned tube, thermal-insulated shell and forced draught blower through setting up have realized the air heating to the forced draught blower entry of boiler, produce the comdenstion water when avoiding microthermal air to mix with the flue gas of recirculation, avoid the comdenstion water to corrode the flue, ensure that the gas is at the combustor internal stability burning.

2. The utility model discloses in, realized producing hot-air fast through heat pipe, solenoid valve and the temperature sensor who sets up, be favorable to the short-term intermittent type of boiler to use, detect the temperature through temperature sensor, when reaching the settlement temperature, controller automatic control solenoid valve is closed, and it is extravagant to reduce the energy.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is an appearance diagram of the present invention.

In the figure: 1-hot water boiler body, 2-burner, 3-heat pipe, 4-air pipe, 5-electromagnetic valve, 6-blower, 7-hot water return pipe, 8-heater outlet header, 9-finned pipe, 10-heater inlet header, 11-regulating valve, 12-circulating pump, 13-temperature sensor, 14-controller, 15-heat insulation shell, 16-hot water outlet pipe, 17-flue, 18-three-way check valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution:

An air heating device of a gas-fired hot water boiler comprises a hot water boiler body 1 and a burner 2, wherein the inner side of the left end of the hot water boiler body 1 is fixedly connected with the outer side of the burner 2, the right end of the burner 2 is communicated with a flue 17, the bottom end of the burner 2 is connected with a heat conduction pipe 3, the outer side of the heat conduction pipe 3 is fixedly connected with the inner side of the bottom end of the hot water boiler body 1, the left side and the right side of the bottom end of the heat conduction pipe 3 are communicated with air pipes 4, the inner side of the heat conduction pipe 3 is fixedly connected with an electromagnetic valve 5, the bottom side of the left end of the air pipe 4 is communicated with a blower 6, the right end of the hot water boiler body 1 is communicated with a hot water return pipe 7, the other end of the hot water return pipe 7 is communicated with a heater outlet header 8, the top end, the top intercommunication of heater import collection case 10 has governing valve 11, the top intercommunication of governing valve 11 has circulating pump 12, the left end intercommunication of circulating pump 12 has hot water outlet pipe 16, and the left end bottom side of hot water outlet pipe 16 is linked together on the left of the top of hot water boiler body 1, the inboard fixedly connected with temperature sensor 13 in top of hot water boiler body 1, temperature sensor 13's top fixedly connected with controller 14, the outer end fixedly connected with thermal-insulated shell 15 of finned tube 9.

The left end of thermal-insulated shell 15 is linked together with the right-hand member of tuber pipe 4, and thermal-insulated shell 15 is made by the aluminium oxide potsherd, and this kind of setting does benefit to thermal-insulated heat preservation, the preceding terminal surface of finned tube 9 is wavy setting, and finned tube 9 is made by aluminium alloy plate, and this kind of setting does benefit to the finned tube 9 heat dissipation, the left end intercommunication of combustor 2 has three check valve 18, and three check valve 18's bottom and forced draught blower 6's left end are linked together, three check valve 18's top and flue 17's left end are linked together, and this kind of being provided with does benefit to the flue gas recovery in the flue 17, the top side left end face center of hot water return pipe 7 is located same water flat line with the axle center of combustor 2, and this kind of being provided with does benefit to.

The model of the electromagnetic valve 5 is 2W-160-15 electromagnetic valve, the model of the blower 6 is ACO-208 air pump, the model of the circulating pump 12 is DCS-1200 water pump, the model of the temperature sensor 13 is WRJK-022 thermocouple, the model of the controller 14 is AQMD2410NS controller, and the model of the three-way check valve 18 is H21X-3T-20P three-way check valve.

The working process is as follows: the device is connected with a power supply before use, clean water is injected into the hot water boiler body 1, when the device is used, fuel gas is injected into the combustor 2 to ignite and burn, the combustor 2 heats clean water at the inner side of the hot water boiler body 1, hot water led out from a hot water outlet pipe 16 is pressurized by a circulating pump 12 and then flows through a regulating valve 11 to be subjected to flow regulation, the hot water flows through a heater inlet header 10 and is subjected to heat exchange at a finned pipe 9, cold air transversely scours the finned pipe 9 outside the pipe to perform heat exchange to heat the cold air, the flow direction of the cold air and the flow direction of the hot water are in a reverse flow, the hot water after the heat exchange enters a hot water return pipe 7 through a heater outlet header 8 and forms a circulation through the hot water boiler body 1, so that the air at the inlet of a blower of the hot water boiler is heated, condensate water is prevented from being, during preheating, combustor 2 generates heat, heat pipe 3 absorbs partial heat, solenoid valve 5 opens, the heat transfer in heat pipe 3 is passed through to the cold air in the tuber pipe 4, hot-air passes through forced draught blower 6 and gets into tee bend check valve 18, the flue gas of flue 17 internal cooling mixes with hot-air and gets into tee bend check valve 18, the quick hot-air that produces has been realized, be favorable to the short-term intermittent type of boiler to use, detect the temperature through temperature sensor 13, when reaching the settlement temperature, 14 automatic control solenoid valves of controller 5 are closed, avoid combustor 2's heat to run off, it is extravagant to reduce the energy.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a gas hot water boiler's air heating device, includes hot water boiler body (1) and combustor (2), its characterized in that: the boiler comprises a boiler body (1), a heat pipe (3) and a blower (6), wherein the left end of the boiler body (1) is fixedly connected with the inner side of the left end of the boiler body (2), the right end of the burner (2) is communicated with a flue (17), the bottom end of the burner (2) is connected with the heat pipe (3), the outer side of the heat pipe (3) is fixedly connected with the inner side of the bottom end of the boiler body (1), the left side and the right side of the bottom end of the heat pipe (3) are communicated with air pipes (4), the inner side of the heat pipe (3) is fixedly connected with an electromagnetic valve (5), the left end of the air pipe (4) is communicated with the blower (6), the right end of the boiler body (1) is communicated with a hot water return pipe (7), the other end of the hot water return pipe (7) is communicated with a heater outlet header (8), the top end of the heater outlet header (8, the utility model discloses a boiler, including heater import collection case (10), heater inlet, regulating valve (11), the top intercommunication of regulating valve (11) has circulating pump (12), the left end intercommunication of circulating pump (12) has hot water outlet pipe (16), and the left end bottom side of hot water outlet pipe (16) is linked together with the top left side of boiler body (1), the inboard fixedly connected with temperature sensor (13) in top of boiler body (1), the top fixedly connected with controller (14) of temperature sensor (13), the outer end fixedly connected with thermal-insulated shell (15) of finned tube (9).

2. An air heating apparatus of a gas hot water boiler according to claim 1, wherein: the left end of the heat insulation shell (15) is communicated with the right end of the air pipe (4), and the heat insulation shell (15) is made of an alumina ceramic sheet.

3. An air heating apparatus of a gas hot water boiler according to claim 1, wherein: the front end face of the finned tube (9) is arranged in a wavy manner, and the finned tube (9) is made of aluminum alloy plates.

4. An air heating apparatus of a gas hot water boiler according to claim 1, wherein: the left end of combustor (2) intercommunication has three check valve (18), and the bottom of three check valve (18) and the left end of forced draught blower (6) communicate, the top of three check valve (18) communicates with the left end of flue (17).

5. An air heating apparatus of a gas hot water boiler according to claim 1, wherein: the center of the left end surface of the top side of the hot water return pipe (7) and the axis of the combustor (2) are positioned on the same horizontal line.