Flue gas waste heat recovery device of gas-fired hot water boiler

Abstract

The utility model relates to the technical field of gas-fired hot water boilers, and provides a gas-fired hot water boiler flue gas waste heat recovery device which comprises a smoke exhaust pipe. The circular groove is formed in the smoke exhaust pipe; and the plurality of heat conduction copper pipes are fixedly embedded in the inner wall of the smoke exhaust pipe. When the hot water boiler is used, the first valve is opened firstly, cold water is conveyed into the first conveying pipe through the water pipe at the position of tap water and flows into the sealing pipe through the first conveying pipe, then smoke can be generated when the hot water boiler is used, the smoke is exhausted through the circular groove in the smoke exhaust pipe, a large amount of heat can be generated by the smoke, and the heat is exhausted through the smoke exhaust pipe. Heat can be absorbed by the multiple heat conduction copper pipes and conducted into the sealing pipe, at the moment, the sealing pipe is filled with a large amount of cold water, the multiple heat conduction copper pipes transmit the heat of flue gas into the cold water in the sealing pipe, and therefore the purposes that redundant heat is conveniently converted into hot water to be reused, and heat loss is reduced are achieved; and the heat recovery efficiency of the flue gas waste heat recovery device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas hot water pot technical field especially relates to a gas hot water boiler flue gas waste heat recovery device. BACKGROUND

[0002] The gas hot water boiler is a kind of equipment for heating water by burning natural gas, liquefied gas and other gas fuel, it is usually used to provide the hot water required by family, commerce or industry, and its working principle is to utilize the heat generated by gas combustion, and the heat is transferred to water by heat exchanger inside the boiler, so as to realize the heating of water.

[0003] In the prior art, such as Chinese patent No. CN222143112U, a gas hot water boiler flue gas waste heat recovery device is provided to solve the technical problem that the current serpentine tube is arranged in layers, which is not convenient for heat accumulation, has low heat exchange efficiency and is not conducive to rapid and sufficient heat exchange. The device includes a heat exchange box with a heat exchange cavity inside, a heat exchange module is detachably arranged inside the heat exchange cavity, the heat exchange module includes first and second heat exchange components arranged in staggered intersection, the first heat exchange component includes a plurality of serpentine heat exchange pipes one arranged in transverse equidistance, the second heat exchange component includes a plurality of serpentine heat exchange pipes two arranged in longitudinal equidistance, the serpentine heat exchange pipes one and two are arranged in staggered intersection, and the intersection points of the serpentine heat exchange pipes one and two form a multi-point heat accumulation area with the effect of promoting heat exchange. The serpentine heat exchange pipes one and two each have a straight pipe portion and a bent portion. The utility model has the advantage of improving heat exchange efficiency.

[0004] Although the above-mentioned scheme has the advantages as above, the above-mentioned scheme has the disadvantage that the device is very complex in structure when in use, which is not convenient for converting excess heat into hot water for reuse, causing heat loss, reducing the heat recovery efficiency of the flue gas waste heat recovery device, and when the device uses waste heat as hot water for delivery, it cannot filter solid particles in the hot water, reducing the practicability of the gas hot water boiler flue gas waste heat recovery device. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problem in the prior art that the structure is very complex when in use, which is not convenient for converting excess heat into hot water for reuse, causing heat loss, reducing the heat recovery efficiency of the flue gas waste heat recovery device, and when the device uses waste heat as hot water for delivery, it cannot filter solid particles in the hot water, reducing the practicability of the gas hot water boiler flue gas waste heat recovery device.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a gas hot water boiler flue gas waste heat recovery device, the device includes:

[0007] A smoke exhaust pipe;

[0008] A circular groove is arranged in the inner wall of the smoke exhaust pipe;

[0009] A plurality of heat-conducting copper pipes are fixedly embedded in the inner wall of the smoke exhaust pipe;

[0010] A second fixed ring is fixedly connected to the outer surface of the smoke exhaust pipe, and one side of the outer surface of the second fixed ring is fixedly connected with a sealing pipe;

[0011] A first fixed ring is fixedly connected to the outer surface of the smoke exhaust pipe, and one side of the outer surface of the first fixed ring is fixedly connected to the outer surface of the sealing pipe;

[0012] A first transmission pipe is fixedly embedded in the inner wall of the sealing pipe, and the bottom end of the first transmission pipe is fixedly connected with a first valve;

[0013] A second transmission pipe is fixedly connected to the bottom of the first valve.

[0014] As a preferred embodiment, a first water outlet pipe is fixedly embedded in the inner wall of the sealing pipe, and one end of the first water outlet pipe is fixedly connected with a second valve.

[0015] The technical effect of the above further scheme is that the second valve allows hot water to flow into the filtering box and the third water outlet pipe through the first water outlet pipe.

[0016] As a preferred embodiment, one end of the second valve is fixedly connected with a second water outlet pipe.

[0017] The technical effect of the above further scheme is that the second water outlet pipe facilitates the transmission of hot water.

[0018] As a preferred embodiment, one end of the second water outlet pipe is fixedly connected with a filtering box, and one side of the outer surface of the filtering box is fixedly connected with a third water outlet pipe.

[0019] The technical effect of the above further scheme is that the plurality of filter screens in the filtering box begin to filter hot water layer by layer.

[0020] As a preferred embodiment, the inner wall of the filtering box is movably embedded with a plurality of filter screens.

[0021] The technical effect of the above further scheme is that the plurality of filter screens help to filter hot water in detail.

[0022] As a preferred embodiment, the top of the filtering box is provided with a square plate.

[0023] The technical effect of the above further scheme is that the square plate is horizontally extracted.

[0024] As a preferred implementation form, two knobs are movably connected to the top of the square plate near the edge, a threaded rod is movably connected to the inside of the square plate, the top end of the threaded rod is fixedly connected to the bottom center of the knob, and the bottom of the threaded rod is movably connected to the moving plate.

[0025] The technical effect of the further scheme is that the knob drives the threaded rod to rotate forward, and the threaded rod gradually drives the threaded rod to tightly fit the filter box body while rotating forward.

[0026] As a preferred implementation form, two telescopic columns are fixedly connected to the bottom of the square plate near the edge, and the bottom end of the two telescopic columns is fixedly connected to the top edge of the moving plate.

[0027] The technical effect of the further scheme is that the telescopic column limits the moving plate to prevent idling.

[0028] Compared with the prior art, the advantages and positive effects of the utility model lie in:

[0029] 1、The utility model discloses a smoke waste heat recovery device, which comprises a filter box body, a sealing pipe, a plurality of heat-conducting copper pipes, a valve two, a valve one, a water pipe, a transmission pipe one, a discharge pipe, a heat water boiler, a water outlet pipe one, a water outlet pipe three, a hot water pipe and a water outlet pipe two.

[0030] 2. The utility model discloses when hot water flows through the filter box body inside, the multiple filter screen plates in the filter box body inside begin to filter hot water layer by layer, and the impurities in hot water are filtered out, and the multiple filter screen plates help to filter hot water carefully, when needing to replace multiple filter screen plates, staff turns the knob in reverse order in turn, and the knob drives the threaded rod to reverse, and the threaded rod reverses while two moving plates gradually do not buckle at the bottom of the filter box body, then staff extracts the square plate horizontally, then extracts multiple filter screen plates in the filter box body, and replaces new filter screen plates, then covers the square plate again, and then manually turns the knob, and the knob drives the threaded rod to turn, and the threaded rod turns while gradually driving the threaded rod to be close to the filter box body, so that the square plate keeps good sealing property, and telescopic column positions the moving plate simultaneously, prevents the moving plate from idling, so that the solid particles in hot water can be filtered, and the practicality of the gas hot water boiler flue gas waste heat recovery device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 A main body structure schematic diagram of a gas hot water boiler flue gas waste heat recovery device provided by the utility model is provided.

[0032] Figure 2 An internal structure schematic diagram of a gas hot water boiler flue gas waste heat recovery device provided by the utility model is provided.

[0033] Figure 3 A side view structure schematic diagram of a gas hot water boiler flue gas waste heat recovery device provided by the utility model is provided.

[0034] Figure 4 An internal structure schematic diagram of a gas hot water boiler flue gas waste heat recovery device provided by the utility model is provided. Figure 3 An enlarged structure schematic diagram of place A in the utility model.

[0035] Legend:

[0036] 1, smoke exhaust pipe, 101, fixed ring one, 102, heat conducting copper pipe, 103, fixed ring two, 104, round groove, 105, transmission pipe one, 106, valve one, 107, transmission pipe two, 108, water outlet pipe one, 109, valve two, 110, water outlet pipe two, 111, water outlet pipe three, 112, sealing pipe, 2, filter box body, 201, moving plate, 202, knob, 203, telescopic column, 204, square plate, 205, threaded rod, 206, filter screen plate. DETAILED DESCRIPTION

[0037] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0038] Embodiment 1, please refer to Figure 1 Figure 4 The present application provides a technical scheme: a flue gas waste heat recovery device of a gas hot water boiler, comprising a smoke exhaust pipe 1; a circular groove 104 is arranged in the inside of the smoke exhaust pipe 1; a plurality of heat-conducting copper pipes 102 are fixedly embedded in the inner wall of the smoke exhaust pipe 1; a fixed ring two 103 is fixedly connected to the outer surface of the smoke exhaust pipe 1, and one side of the outer surface of the fixed ring two 103 is fixedly connected with a sealing pipe 112; a fixed ring one 101 is fixedly connected to the outer surface of the smoke exhaust pipe 1, and one side of the outer surface of the fixed ring one 101 is fixedly connected to the outer surface of the sealing pipe 112; a transmission pipe one 105 is fixedly embedded in the inside of the sealing pipe 112, and the bottom end of the transmission pipe one 105 is fixedly connected with a valve one 106; a transmission pipe two 107 is fixedly connected to the bottom of the valve one 106; a water outlet pipe one 108 is fixedly embedded in the inside of the sealing pipe 112; one end of the water outlet pipe one 108 is fixedly connected with a valve two 109; one end of the valve two 109 is fixedly connected with a water outlet pipe two 110.

[0039] In the embodiment, in use, first, the valve one 106 is opened, cold water is transmitted into the transmission pipe one 105 through the water pipe at the tap, and flows into the inside of the sealing pipe 112 through the transmission pipe one 105, then when the hot water boiler is used, flue gas is generated, the flue gas is exhausted through the circular groove 104 in the inside of the smoke exhaust pipe 1, the flue gas generates a large amount of heat, the heat is absorbed by the plurality of heat-conducting copper pipes 102 and is conducted to the inside of the sealing pipe 112, at this time, the inside of the sealing pipe 112 is full of a large amount of cold water, the plurality of heat-conducting copper pipes 102 transmit the heat of the flue gas to the cold water in the inside of the sealing pipe 112, as the flue gas continues to be exhausted, the hot water in the inside of the sealing pipe 112 is heated to the required temperature, then the valve two 109 is opened by the worker, the valve two 109 is used to make the hot water flow into the filter box body 2 and the water outlet pipe three 111 along the water outlet pipe one 108, and finally flow into the hot water pipe for the user to use, so that the problem that the excess heat is converted into hot water for reuse and heat loss is reduced is solved, and the heat recovery efficiency of the flue gas waste heat recovery device is improved.

[0040] Embodiment 2, as Figure 1 Figure 4 ​​As shown, one end of the water outlet pipe two 110 is fixedly connected with the filter box body 2, one side of the outer surface of the filter box body 2 is fixedly connected with the water outlet pipe three 111, the inner walls of the filter box body 2 are movably embedded with a plurality of filter screen plates 206, the top of the filter box body 2 is provided with a square plate 204, two knobs 202 are movably connected to the top of the square plate 204 near the edge, the inside of the square plate 204 is movably connected with a threaded rod 205, the top end of the threaded rod 205 is fixedly connected to the bottom center of the knob 202, the bottom of the threaded rod 205 is movably connected with a moving plate 201, two telescopic columns 203 are fixedly connected to the bottom of the square plate 204 near the edge, and the bottom ends of the two telescopic columns 203 are fixedly connected to the top edges of the moving plate 201.

[0041] In this embodiment, when hot water flows through the inside of the filter box body 2, the plurality of filter screen plates 206 inside the filter box body 2 begin to filter the hot water layer by layer, filtering out impurities in the hot water, and the plurality of filter screen plates 206 help to filter the hot water in detail. When the plurality of filter screen plates 206 need to be replaced, the staff reversely rotates the knob 202 in sequence, the knob 202 drives the threaded rod 205 to reverse, the threaded rod 205 reverses while the two moving plates 201 gradually come off the bottom of the filter box body 2, then the staff horizontally pulls out the square plate 204, then pulls out the plurality of filter screen plates 206 in the filter box body 2, replaces them with new filter screen plates 206, then manually rotates the knob 202 in the positive direction, the knob 202 drives the threaded rod 205 to rotate in the positive direction, the threaded rod 205 rotates in the positive direction while gradually driving the threaded rod 205 to tightly fit the filter box body 2, so that the square plate 204 maintains good sealing performance, and the telescopic column 203 limits the moving plate 201 to prevent the moving plate 201 from idling, so as to achieve the purpose of filtering solid particles in the hot water and improve the practicability of the gas-fired hot water boiler flue gas waste heat recovery device.

[0042] Working principle: in use, first open the valve one 106, through the water pipe at the tap water transmission to the transmission pipe one 105, and via the transmission pipe one 105 into the sealed pipe 112 inside, then when the hot water boiler is used to produce flue gas, flue gas through the round groove 104 inside the exhaust pipe 1 and exhaust, flue gas will produce a large amount of heat, heat will be absorbed by multiple heat copper pipe 102, and conduction to the inside of the sealed pipe 112, at this time the inside of the sealed pipe 112 is full of a large amount of cold water, multiple heat copper pipe 102 will transmit the heat of flue gas to the cold water in the inside of the sealed pipe 112, as the flue gas continues to exhaust, the hot water in the inside of the sealed pipe 112 is heated to the required temperature, the staff then open the valve two 109, using the valve two 109 to make hot water along the outlet pipe one 108 into the filter box 2 and outlet pipe three 111, and finally into the hot water pipe for user to use, so as to achieve the problem of convenient conversion of excess heat into hot water for reuse, reduce heat loss, improve the heat recovery efficiency of the flue gas waste heat recovery device, and when the hot water flows through the filter box 2, multiple filter screen plates 206 in the filter box 2 begin to filter the hot water layer by layer, filtering out the impurities in the hot water, multiple filter screen plates 206 help to filter the hot water in detail, when multiple filter screen plates 206 need to be replaced, the staff reverse rotate the knob 202 in turn, the knob 202 drives the threaded rod 205 to reverse, while the two moving plates 201 gradually do not buckle on the bottom of the filter box 2, then the staff horizontally pull out the square plate 204, then pull out multiple filter screen plates 206 in the filter box 2, replace them with new filter screen plates 206, then cover the square plate 204 again, then manually rotate the knob 202 in the positive direction, the knob 202 drives the threaded rod 205 to rotate in the positive direction, while the threaded rod 205 rotates in the positive direction, gradually drives the threaded rod 205 to tightly fit the filter box 2, so that the square plate 204 maintains good sealing, while the telescopic column 203 limits the moving plate 201, preventing the moving plate 201 from idling, so as to achieve the purpose of filtering solid particles in the hot water, improve the practicability of the gas hot water boiler flue gas waste heat recovery device.

[0043] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technology content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made on the basis of the technical essence of the present application to the above embodiments shall fall within the protection scope of the present application.

Claims

1. A flue gas waste heat recovery device for a gas-fired water heating boiler, characterized by, The device comprises: A smoke exhaust pipe (1); A circular groove (104) is arranged in the interior of the smoke exhaust pipe (1); A plurality of heat-conducting copper pipes (102) are fixedly embedded in the inner wall of the smoke exhaust pipe (1); A second fixing ring (103) is fixedly connected to the outer surface of the smoke exhaust pipe (1), and one side of the outer surface of the second fixing ring (103) is fixedly connected with a sealing pipe (112); A first fixing ring (101) is fixedly connected to the outer surface of the smoke exhaust pipe (1), and one side of the outer surface of the first fixing ring (101) is fixedly connected to the outer surface of the sealing pipe (112); A first transmission pipe (105) is fixedly embedded in the interior of the sealing pipe (112), and the bottom end of the first transmission pipe (105) is fixedly connected with a first valve (106); A second transmission pipe (107) is fixedly connected to the bottom of the first valve (106).

2. A flue gas waste heat recovery device for a gas-fired water boiler according to claim 1, characterized in that: A first water outlet pipe (108) is fixedly embedded in the interior of the sealing pipe (112), and one end of the first water outlet pipe (108) is fixedly connected with a second valve (109).

3. A flue gas heat recovery device for a gas-fired water boiler according to claim 2, characterized in that: One end of the second valve (109) is fixedly connected with a second water outlet pipe (110).

4. A flue gas heat recovery device for a gas-fired water boiler according to claim 3, characterized in that: One end of the second water outlet pipe (110) is fixedly connected with a filter box (2), and one side of the outer surface of the filter box (2) is fixedly connected with a third water outlet pipe (111).

5. A flue gas heat recovery device for a gas-fired water boiler according to claim 4, characterized in that: A plurality of filter screen plates (206) are movably embedded on both sides of the inner wall of the filter box (2).

6. A flue gas heat recovery device for a gas-fired water boiler according to claim 4, characterized in that: A square plate (204) is arranged on the top of the filter box (2).

7. A flue gas heat recovery device for a gas-fired water boiler according to claim 6, characterized in that: Two knobs (202) are movably connected to the top edge of the square plate (204), a threaded rod (205) is movably connected to the interior of the square plate (204), the top end of the threaded rod (205) is fixedly connected to the bottom center of the knob (202), and the bottom of the threaded rod (205) is movably connected with a moving plate (201).

8. A flue gas heat recovery device for a gas-fired water boiler according to claim 6, characterized in that: Two telescopic columns (203) are fixedly connected to the bottom edge of the square plate (204), and the bottom ends of the two telescopic columns (203) are fixedly connected to the top edge of the moving plate (201).

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