Efficient heat exchanger for gas-fired boiler

Abstract

The utility model discloses an efficient heat exchanger for a gas-fired boiler, which comprises a shell, a heat exchange component is arranged in the shell, and the heat exchange component comprises a heat exchange tube, a flow deflector, an interception net, a spring, an air distribution plate, a guide rod, two mounting seats and two support plates. Under the action of the flow deflectors, hot air flow continuously changes the direction in the shell and is in contact with the heat exchange tubes, so that the contact area between the hot air flow and the heat exchange tubes can be increased, and the heat exchange efficiency is improved; by arranging the flow deflectors, the contact area between hot air flow and the heat exchange pipes is increased, the hot air flow can fully exchange heat with the heat exchange pipes and the flow deflectors, and therefore the heat exchange efficiency is improved, meanwhile, the overall heat efficiency of the gas boiler is improved, and energy consumption and operation cost are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a heat exchanger, concretely is high -efficient heat exchanger for gas boiler belongs to heat exchanger technical field. BACKGROUND

[0002] Gas boiler is a kind of gas boiler equipment with natural gas, city gas, liquefied petroleum gas or marsh gas etc., heat water or produce steam by the heat energy generated by combustion, is widely used in heating, bathing, industrial steam supply etc. Heat exchanger is the key component for realizing heat transfer in gas boiler, it can efficiently transfer the heat generated by gas combustion to water or other heat medium, to heat domestic water or produce steam. By optimizing heat exchange process, heat exchanger can significantly improve the thermal efficiency of gas boiler, reduce energy waste. For example, after using high-efficiency heat exchanger, the thermal efficiency of boiler can be improved by several percentage points, even higher.

[0003] In prior art, heat exchanger generally uses heat exchange tube and heat conduction sheet to cooperate to achieve the purpose of heat exchange. This traditional structure design exposes obvious short board in actual application process, and the heat exchange efficiency is at a low level.

[0004] Specifically, due to the layout and structure of heat exchange tube and heat conduction sheet, the hot gas flow has relatively small contact area with the heat exchange components inside the heat exchanger when flowing through the heat exchanger, and the hot gas flow cannot fully exchange heat with the heat exchange tube and heat conduction sheet, a large amount of heat cannot be effectively transferred and utilized, thereby the efficiency of the whole heat exchange process is greatly reduced. The low heat exchange efficiency and limited contact area between hot gas flow and heat exchanger not only affect the performance of heat exchanger, but also limit the improvement of overall thermal efficiency of gas boiler to some extent, increase energy consumption and operating cost. Therefore, a high-efficiency heat exchanger for gas boiler is proposed. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a high-efficiency heat exchanger for gas boiler to solve one of the problems in the above background technology.

[0006] The utility model is implemented by the following technical solutions: a high-efficiency heat exchanger for gas boiler, comprising a shell, a heat exchange assembly is arranged in the shell, the heat exchange assembly comprises heat exchange tubes, guide vanes, intercepting nets, springs, air distribution plates, guide rods, two mounting seats and two supporting plates.

[0007] The heat exchange pipe is continuously bent in S shape and horizontally arranged in the inside of the shell, the flow guide vane is fixedly connected to the outer side wall of the two transverse pipes of the heat exchange pipe, the flow guide vanes at upper and lower positions are staggered arranged, the two mounting bases are symmetrically fixedly connected to the upper surface of the shell, the two supporting plates are symmetrically fixedly connected to the opposite surfaces of the two mounting bases, the guide rods are equidistantly fixedly connected to the upper surfaces of the supporting plates, the intercepting net and the air distribution plate are both slidably connected to the outer side wall of the guide rod, the spring is sleeved with the outer side wall of the guide rod, and the intercepting net is below the air distribution plate.

[0008] As a further preferred of the technical solution, the heat exchange pipe is below the intercepting net, and the lower surface of the air distribution plate is attached to the upper surfaces of the two mounting bases.

[0009] As a further preferred of the technical solution, the bottom end of the spring abuts against the upper surface of the intercepting net, the top end of the spring abuts against the lower surface of the air distribution plate, and the lower surface of the air distribution plate is attached to the upper surface of the supporting plate.

[0010] As a further preferred of the technical solution, the top end of the guide rod is threadedly connected with a limiting nut, and the lower surface of the limiting nut is attached to the upper surface of the air distribution plate.

[0011] As a further preferred of the technical solution, the inner walls of the shell are symmetrically fixedly connected with limiting buckles on both sides, and the inside of the limiting buckle is provided with a clamping groove.

[0012] As a further preferred of the technical solution, the heat exchange pipe is clamped to the inner side wall of the clamping groove.

[0013] As a further preferred of the technical solution, the shell is a hollow shell.

[0014] As a further preferred of the technical solution, one end of the heat exchange pipe is provided with a water inlet pipe, and the other end of the heat exchange pipe is provided with a water outlet pipe.

[0015] The advantages of the utility model are:

[0016] 1, the utility model discloses a heat exchange pipe is clamped to the inner side wall of the clamping groove.

[0017] 2. The utility model discloses a guide vane is set up, increased the contact area of hot air current and heat exchange pipe, make hot air current can fully exchange heat with heat exchange pipe and guide vane to improve the heat exchange efficiency, make the overall thermal efficiency of gas boiler reach promotion simultaneously, reduced energy consumption and operating cost. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, below will be to the embodiment or prior art description needed to use the drawing briefly introduced, obviously, below description's drawing only some embodiments of the utility model, for ordinary skilled person in the art comes, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0019] Figure 1 It is the structural schematic diagram of the utility model;

[0020] Figure 2 It is the structural exploded view of the utility model;

[0021] Figure 3 It is the guide vane and heat exchange pipe connection schematic diagram of the utility model;

[0022] Figure 4 It is the intercepting net structure schematic diagram of the utility model;

[0023] Figure 5 It is the limiting buckle structure schematic diagram of the utility model.

[0024] In the drawing: 101, heat exchange assembly;11, shell;12, heat exchange pipe;13, guide vane;14, intercepting net;15, spring;16, cloth wind board;17, guide rod;18, mounting seat;19, support plate;20, limiting nut;31, limiting buckle;32, clamping groove;33, water inlet pipe;34, water outlet pipe. DETAILED DESCRIPTION

[0025] Below, combining the drawing in the embodiments of the utility model, the technical scheme in the embodiments of the utility model is clearly and completely described, obviously, the described embodiment only is a part of the embodiment of the utility model, is not all the embodiment. Based on the embodiment in the utility model, all other embodiments that the ordinary skilled person in the art obtains under the premise of not making creative labor belong to the scope of protection of the utility model.

[0026] EMBODIMENT

[0027] Please refer to Figures 1-5The utility model provides a technical scheme: a kind of high-efficiency heat exchanger for gas boiler, including shell 11, heat exchange subassembly 101 is provided in shell 11, heat exchange subassembly 101 includes heat exchange pipe 12, guide vane 13, intercept net 14, spring 15, cloth wind board 16, guide rod 17, two mounting seat 18 and two support plate 19;

[0028] Heat exchange pipe 12 is continuously S-shaped bending and horizontally transversely placed in the inside of shell 11, guide vane 13 is fixedly connected to the outer side wall of two transverse pipes of heat exchange pipe 12, guide vane 13 of upper and lower two positions is staggered arrangement, and then when hot air flow flows from top to bottom, under the action of guide vane 13, hot air flow is constantly changed direction in shell 11 and contacts heat exchange pipe 12, and then can increase the contact area of hot air flow and heat exchange pipe 12, to improve heat exchange efficiency, guide vane 13 is copper material, with good heat conduction performance, can transfer heat;

[0029] Two mounting seat 18 are fixedly connected to the upper surface of shell 11 symmetrically, two support plate 19 are fixedly connected to the opposite surface of two mounting seat 18 symmetrically, guide rod 17 is fixedly connected to the upper surface of support plate 19 equidistantly, intercept net 14 and cloth wind board 16 are all slidingly connected to the outer side wall of guide rod 17, spring 15 is sleeved on the outer side wall of guide rod 17, intercept net 14 is located below cloth wind board 16, the position of intercept net 14 and cloth wind board 16 can be limited by guide rod 17, when hot air flow flows into shell 11 downwards, hot air flow can be made to flow downwards evenly by cloth wind board 16, to make hot air flow and heat exchange pipe 12 contact fully, the impurity in hot air flow can be filtered by intercept net 14, to avoid impurity adhering on heat exchange pipe 12, guarantee the heat exchange efficiency of heat exchange pipe 12.

[0030] In the embodiment, specifically: heat exchange pipe 12 is located below intercept net 14, the lower surface of cloth wind board 16 is attached to the upper surface of two mounting seat 18, the hot air flow can be filtered by intercept net 14, to avoid dust adhering on heat exchange pipe 12 and cause heat exchange efficiency to reduce.

[0031] In the embodiment, specifically: the bottom end of spring 15 abuts the upper surface of intercept net 14, the top end of spring 15 abuts the lower surface of cloth wind board 16, the lower surface of cloth wind board 16 is attached to the upper surface of support plate 19, the top end of guide rod 17 is threadedly connected with limiting nut 20, the lower surface of limiting nut 20 is attached to the upper surface of cloth wind board 16, the position of cloth wind board 16 can be limited by limiting nut 20, under the impetus of spring 15, intercept net 14 and support plate 19 are in close contact, to limit the position of intercept net 14;

[0032] When the heat exchanger runs for a certain time, the intercepting net 14 needs to be taken down for cleaning: first, the limiting nut 20 is disassembled, then the cloth air distribution plate 16 and the spring 15 are taken down, at this time the intercepting net 14 can be taken out and cleaned;

[0033] After cleaning, the intercepting net 14 is sleeved on the guide rod 17, then the spring 15 and the cloth air distribution plate 16 are sleeved on the outside of the guide rod 17, finally the limiting nut 20 is used for fixing, that is, the installation of the intercepting net 14 is completed.

[0034] In the embodiment, specifically, the inner walls of the shell 11 are symmetrically and fixedly connected with limiting buckles 31, the limiting buckles 31 are internally provided with clamping grooves 32, and the heat exchange pipes 12 are clamped to the inner side walls of the clamping grooves 32. The position of the heat exchange pipes 12 can be limited through the limiting buckles 31, and the stability of the structure is enhanced.

[0035] In the embodiment, specifically, the shell 11 is a hollow shell, one end of the heat exchange pipe 12 is provided with a water inlet pipe 33, and the other end of the heat exchange pipe 12 is provided with a water outlet pipe 34. The water inlet pipe 33 and the water outlet pipe 34 can realize the import and export of the water source.

[0036] The working principle or structural principle is that when in use, the heat exchanger is installed in the gas boiler. In working, the hot gas flows from top to bottom, the hot gas is guided through the cloth air distribution plate 16, so that the hot gas uniformly flows downward, then the impurities in the hot gas are filtered and intercepted through the intercepting net 14, so that the impurities are prevented from adhering to the heat exchange pipes 12, then the hot gas enters the shell 11, under the action of the flow guide vane 13, the hot gas continuously changes the direction in the shell 11 and contacts the heat exchange pipes 12, so that the contact area of the hot gas and the heat exchange pipes 12 is increased, thereby the heat exchange efficiency is improved, and the gas after heat exchange is discharged from the bottom of the shell 11.

[0037] Compared with the prior art, the utility model discloses a flow guide vane 13, which increases the contact area of the hot gas and the heat exchange pipes 12, so that the hot gas can fully exchange heat with the heat exchange pipes 12 and the flow guide vane 13, thereby improving the heat exchange efficiency, and also improving the overall thermal efficiency of the gas boiler, reducing energy consumption and operation cost.

[0038] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A high efficiency heat exchanger for a gas fired boiler, characterized by, The application relates to a heat exchange device, which comprises a shell (11) provided with a heat exchange assembly (101) inside the shell (11), the heat exchange assembly (101) comprising a heat exchange pipe (12), a flow guide fin (13), an intercepting net (14), a spring (15), a wind distribution plate (16), a guide rod (17), two mounting seats (18) and two supporting plates (19). The heat exchange pipe (12) is horizontally arranged in the shell (11) in a continuous S-shaped curve, the flow guide fin (13) is fixedly connected to the outer side walls of two transverse pipes of the heat exchange pipe (12), the flow guide fins (13) at upper and lower positions are staggered, the two mounting seats (18) are fixedly connected to the upper surfaces of the shell (11) in a symmetrical mode, the two supporting plates (19) are fixedly connected to the opposite surfaces of the two mounting seats (18) in a symmetrical mode, the guide rod (17) is fixedly connected to the upper surfaces of the supporting plates (19) at equal intervals, the intercepting net (14) and the wind distribution plate (16) are slidingly connected to the outer side walls of the guide rod (17), the spring (15) is sleeved on the outer side wall of the guide rod (17), and the intercepting net (14) is located below the wind distribution plate (16).

2. A high efficiency heat exchanger for gas fired boilers as claimed in claim 1 wherein, The heat exchange pipe (12) is located below the intercepting net (14), and the lower surface of the wind distribution plate (16) is attached to the upper surfaces of the two mounting seats (18).

3. A high efficiency heat exchanger for gas fired boilers as claimed in claim 2 wherein, The bottom end of the spring (15) abuts against the upper surface of the intercepting net (14), the top end of the spring (15) abuts against the lower surface of the wind distribution plate (16), and the lower surface of the wind distribution plate (16) is attached to the upper surfaces of the supporting plates (19).

4. A high efficiency heat exchanger for a gas fired boiler as claimed in claim 3, wherein The top end of the guide rod (17) is screw-connected with a limiting nut (20), and the lower surface of the limiting nut (20) is attached to the upper surface of the wind distribution plate (16).

5. A high efficiency heat exchanger for gas fired boilers as claimed in claim 1 wherein, The inner walls of the shell (11) are fixedly connected with limiting buckles (31) in a symmetrical mode, and the inner walls of the limiting buckles (31) are provided with clamping grooves (32).

6. A high efficiency heat exchanger for a gas fired boiler as claimed in claim 5 wherein, The heat exchange pipe (12) is clamped to the inner side walls of the clamping grooves (32).

7. A high efficiency heat exchanger for gas fired boilers as claimed in claim 1 wherein, The shell (11) is a hollow shell.

8. A high efficiency heat exchanger for gas fired boilers as claimed in claim 1 wherein, One end of the heat exchange pipe (12) is provided with a water inlet pipe (33), and the other end of the heat exchange pipe (12) is provided with a water outlet pipe (34).

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