Gas-fired hot water boiler with heat exchanger

Abstract

The utility model relates to the technical field of gas-fired hot water boilers, and discloses a gas-fired hot water boiler with a heat exchanger, which comprises a boiler body, a combustion chamber and a water storage cavity are arranged in the boiler body, a combustor inserted into the combustion chamber is mounted on the boiler body, and a heat exchange tube is mounted in the water storage cavity. A cleaning mechanism used for cleaning the heat exchange pipes is installed on the boiler body and comprises a high-pressure pump, a flow dividing pipe, two flushing pipes and nozzles, the high-pressure pump is fixed to the outer side of the boiler body, a water outlet of the high-pressure pump is fixed to the flow dividing pipe, and the two flushing pipes are rotationally connected with the boiler body; the front ends of the flushing pipes are inserted into the flow dividing pipes and rotationally connected with the flow dividing pipes, each flushing pipe is provided with a plurality of nozzles, the heat exchange pipe is located between the two flushing pipes, and the swing mechanism is connected with the two flushing pipes and used for driving the two flushing pipes to swing. Scale accumulated outside the heat exchanger can be cleaned conveniently, and the heat exchange efficiency of the heat exchanger is prevented from being affected by the scale.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas hot water boiler technical field especially with heat exchanger's gas hot water boiler. BACKGROUND

[0002] Combustion hot water boiler is a kind of equipment using the heat energy released by fuel combustion to heat water. Fuel burns in the hearth, produces high-temperature flue gas, and transfers heat to the water in the boiler by heat transfer, so that the water is heated up.

[0003] Combustion hot water boiler will use heat exchanger to increase the heat exchange efficiency of high-temperature flue gas and water flow, but after a long time of use, the outer wall of the heat exchanger will accumulate a lot of scale, which will affect the heat exchange efficiency of the heat exchanger, and manual disassembly and cleaning are required, which is quite troublesome. Therefore, in view of the above status, it is urgent to develop a gas hot water boiler with heat exchanger, which is convenient to clean the scale accumulated outside the heat exchanger and prevents the scale from affecting the heat exchange efficiency of the heat exchanger, so as to overcome the shortcomings in current practical application and meet the current demand. SUMMARY

[0004] The utility model discloses a kind of gas hot water boilers with heat exchanger, to solve the problem raised in above background.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme:

[0006] A kind of gas hot water boiler with heat exchanger, including boiler body, combustor, cleaning mechanism, swing mechanism and heat exchange pipe, the combustion chamber and water storage cavity are provided in the boiler body, the combustor is installed on the boiler body and inserted into the combustion chamber, the heat exchange pipe is installed in the water storage cavity, the lower end of the heat exchange pipe is inserted into the combustion chamber, and the upper end extends to the outside of the boiler body, the cleaning mechanism for cleaning the heat exchange pipe is installed on the boiler body, the cleaning mechanism includes: high-pressure pump, shunt pipe, flushing pipe and nozzle, the high-pressure pump is fixed to the outside of the boiler body, the water outlet of the high-pressure pump is fixed with the shunt pipe, the number of flushing pipes is two, the flushing pipe is rotatably connected with the boiler body, the front end of the flushing pipe is inserted into the shunt pipe and rotatably connected therewith, a plurality of nozzles are installed on each flushing pipe, the heat exchange pipe is located between the two flushing pipes, the swing mechanism is installed on the outside of the boiler body, and the swing mechanism is connected with the two flushing pipes and used to swing the two flushing pipes.

[0007] Preferably, the heat exchange pipe is made of copper.

[0008] Preferably, the swing mechanism comprises an electric telescopic rod, a rack and pinion gears, the electric telescopic rod is fixed outside the boiler body, the telescopic end of the electric telescopic rod is connected with the rack, the number of the pinion gears is two, each pinion gear is fixed on a flushing pipe, and the pinion gears are engaged with the rack.

[0009] Preferably, the rear side of the rack is fixed with a sliding block, and the outside of the boiler body is fixed with a sliding rail, and the sliding block is slidingly installed on the sliding rail.

[0010] Preferably, one side of the boiler body is fixed with a water inlet pipe and a water outlet pipe connected with the water storage cavity, the first valve is installed on the water inlet pipe, and the second valve is installed on the water outlet pipe.

[0011] The gas hot water boiler with the heat exchanger has the advantages that: when in use, normal temperature tap water is added into the water storage cavity, the burner burns gas to spray the flame into the combustion chamber to heat the tap water, in addition, hot gas enters from the bottom of the heat exchange pipe to heat the tap water in the water storage cavity, the heating efficiency is improved, the heat exchange pipe is cleaned after being used for a period of time, at this time, the water storage cavity is emptied, the high-pressure pump is started to deliver high-pressure water flow into the flushing pipe and the nozzle, the high-pressure water flow sprayed through the nozzle is used for flushing away the scale outside the heat exchange pipe, the scale is prevented from affecting the heat exchange efficiency of the heat exchange pipe, meanwhile, the rack is driven to move up and down through the electric telescopic rod, the pinion gears are driven to rotate back and forth through the up-and-down movement of the rack, the flushing pipe and the nozzle are driven to swing back and forth through the back-and-forth rotation of the pinion gears, and thus the flushing range of the nozzle on the heat exchange pipe is expanded. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0013] Figure 2 It is an internal sectional view of the utility model.

[0014] Figure 3 It is a part structure schematic view of the utility model Figure 1 .

[0015] Figure 4 It is a part structure schematic view of the utility model Figure 2 .

[0016] LEGEND:

[0017] 1, boiler body; 101, combustion chamber; 102, water storage cavity; 103, water inlet pipe; 104, first valve; 105, water outlet pipe; 106, second valve; 2, burner; 3, cleaning mechanism; 301, high-pressure pump; 302, shunt pipe; 303, flushing pipe; 304, nozzle; 4, swing mechanism; 401, electric telescopic rod; 402, rack; 4021, slider; 4022, slide rail; 403, gear; 5, heat exchange pipe. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] Specific embodiments are given below.

[0020] Referring to Figures 1-4 In the embodiments of the present application, a gas water heater with a heat exchanger includes a boiler body 1, a burner 2, a cleaning mechanism 3, a swing mechanism 4, and a heat exchange pipe 5. The boiler body 1 is provided with a combustion chamber 101 and a water storage cavity 102. The burner 2 is installed on the boiler body 1 and inserted into the combustion chamber 101. The burner 2 is connected to an external gas source. The burner 2 is a product of the prior art, which mixes and ignites fuel and air. The heat exchange pipe 5 is installed in the water storage cavity 102. The lower end of the heat exchange pipe 5 is inserted into the combustion chamber 101, and the upper end extends to the outside of the boiler body 1. The heat exchange pipe 5 is made of copper, which has good thermal conductivity. The cleaning mechanism 3 is installed on the boiler body 1 for cleaning the heat exchange pipe 5. The cleaning mechanism 3 includes a high-pressure pump 301, a shunt pipe 302, a flushing pipe 303, and a nozzle 304. The high-pressure pump 301 is fixed to the outside of the boiler body 1 and connected to an external tap water source. The water outlet of the high-pressure pump 301 is fixed to the shunt pipe 302. The number of flushing pipes 303 is two. The flushing pipes 303 are rotatably connected to the boiler body 1. The front ends of the flushing pipes 303 are inserted into and rotatably connected to the shunt pipe 302. Sealing rings (not shown) are arranged at the connection positions of the flushing pipes 303 and the boiler body 1 and the shunt pipe 302 to prevent water leakage. A plurality of nozzles 304 are installed on each flushing pipe 303. The heat exchange pipe 5 is located between the two flushing pipes 303. The swing mechanism 4 is installed on the outside of the boiler body 1 and connected to the two flushing pipes 303 to drive the two flushing pipes 303 to swing.

[0021] The swing mechanism 4 includes an electric telescopic rod 401, a rack 402, and a gear 403. The electric telescopic rod 401 is fixed to the outside of the boiler body 1. The telescopic end of the electric telescopic rod 401 is connected to the rack 402. There are two gears 403, each of which is fixed to a flushing pipe 303. The gears 403 mesh with the rack 402. A slider 4021 is fixed to the rear side of the rack 402. A slide rail 4022 is fixed to the outside of the boiler body 1. The slider 4021 is slidably mounted on the slide rail 4022. In use, the electric telescopic rod 401 drives the rack 402 to move up and down. The up and down movement of the rack 402 drives the gear 403 to rotate back and forth. The rotation of the gear 403 drives the flushing pipe 303 and the nozzle 304 to swing back and forth, thereby adjusting the flushing range of the nozzle 304 on the heat exchange tube 5.

[0022] A water inlet pipe 103 and a water outlet pipe 105 connected to a water storage chamber 102 are fixed on one side of the boiler body 1. A first valve 104 is installed on the water inlet pipe 103 and a second valve 106 is installed on the water outlet pipe 105.

[0023] A temperature sensor (not shown) is also installed inside the water storage chamber 102, and all electrical components are controlled by a PLC system (not shown).

[0024] Working principle: In operation, the gas-fired hot water boiler with heat exchanger adds room temperature tap water to the storage chamber 102. The burner 2 burns gas and sprays the flame into the combustion chamber 101 to heat the tap water. In addition, hot air enters from the bottom of the heat exchange tube 5 to heat the tap water in the storage chamber 102, improving heating efficiency. After a period of use, the heat exchange tube 5 is cleaned. At this time, the storage chamber 102 is emptied, and the high-pressure pump 301 is started to deliver high-pressure water to the flushing pipe 303 and nozzle 304. The high-pressure water jet from the nozzle 304 washes away the scale on the outside of the heat exchange tube 5, preventing the scale from affecting the heat exchange efficiency of the heat exchange tube 5. At the same time, the electric telescopic rod 401 drives the rack 402 to move up and down. The up and down movement of the rack 402 drives the gear 403 to rotate back and forth. The rotation of the gear 403 drives the flushing pipe 303 and the nozzle 304 to swing back and forth, thereby expanding the flushing range of the nozzle 304 on the heat exchange tube 5.

[0025] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A gas-fired water boiler with heat exchanger, characterized in that, The utility model provides a boiler, including boiler body (1), burner (2), cleaning mechanism (3), swing mechanism (4) and heat exchange pipe (5), be provided with combustion chamber (101) and water storage cavity (102) in boiler body (1), be installed with burner (2) that inserts into combustion chamber (101) on boiler body (1), be installed with heat exchange pipe (5) in water storage cavity (102), the lower end of heat exchange pipe (5) inserts into combustion chamber (101) and the upper end extends to the outside of boiler body (1), be installed with cleaning mechanism (3) for cleaning heat exchange pipe (5) on boiler body (1), cleaning mechanism (3) includes: high pressure pump (301), shunt pipe (302), flush pipe (303) and nozzle (304), high pressure pump (301) is fixed to the outside of boiler body (1), the water outlet of high pressure pump (301) is fixed with shunt pipe (302), the number of flush pipe (303) is two, flush pipe (303) is rotatably connected with boiler body (1), the front end of flush pipe (303) inserts into shunt pipe (302) and is rotatably connected, a plurality of nozzles (304) are installed on each flush pipe (303), heat exchange pipe (5) is located between two flush pipes (303), swing mechanism (4) is installed on the outside of boiler body (1), swing mechanism (4) is connected with two flush pipes (303) and is used to drive two flush pipes (303) swing.

2. Gas-fired water-heat boiler with heat exchanger according to claim 1, characterized in that, The heat exchange pipe (5) is made of copper.

3. Gas-fired water-heat boiler with heat exchanger according to claim 1, characterized in that, The swing mechanism (4) includes: an electric telescopic rod (401), a rack (402) and a gear (403), the electric telescopic rod (401) is fixed to the outside of the boiler body (1), the telescopic end of the electric telescopic rod (401) is connected with the rack (402), the number of the gear (403) is two, each gear (403) is fixed on one flush pipe (303), and the gear (403) is engaged with the rack (402).

4. Gas-fired water-heat boiler with heat exchanger according to claim 3, characterized in that, The rear side of the rack (402) is fixed with a sliding block (4021), the outside of the boiler body (1) is fixed with a sliding rail (4022), and the sliding block (4021) is slidably installed on the sliding rail (4022).

5. The gas combi boiler with heat exchanger according to claim 1, characterized in that, One side of the boiler body (1) is fixed with a water inlet pipe (103) connected with the water storage cavity (102) and a water outlet pipe (105), the first valve (104) is installed on the water inlet pipe (103), and the second valve (106) is installed on the water outlet pipe (105).

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