阅读说明：本技术 一种燃气锅炉热交换器 (Heat exchanger of gas boiler ) 是由 汤宝宝 李�浩 于 2020-07-13 设计创作，主要内容包括：本发明涉及交换器领域,具体的说是一种燃气锅炉热交换器,包括热换件、连接套、换热组件、触热组件、增温件和阻流机构,所述热换件包括水平管、连接弯头、进水口接管和排水口接管,所述水平管依次通过连接弯头相互连接并构成蛇形管,且蛇形管的两端分别固定安装有进水口接管和排水口接管,所述水平管的两端均固定套接有连接套,且所有水平管同侧的连接套上固定安装在固定板上,若干个所述换热组件均匀安装在热换件中的水平管两侧,所述换热组件包括固定套管和环形翅片,所述固定套管的外侧壁固定套接有若干个均匀分布的环形翅片,且固定套管固定安装在水平管上。本发明提供的燃气锅炉热交换器具有降低流速增强燃气热利用率的优点。(The invention relates to the field of exchangers, in particular to a heat exchanger of a gas boiler, which comprises a heat exchanging part, a connecting sleeve, a heat exchanging component, a heat contacting component, a heating part and a flow choking mechanism, the heat exchange piece comprises horizontal pipes, connecting elbows, water inlet connecting pipes and water outlet connecting pipes, the horizontal pipes are connected with each other through the connecting elbows in sequence to form a coiled pipe, and both ends of the coiled pipe are respectively and fixedly provided with a water inlet connecting pipe and a water outlet connecting pipe, both ends of the horizontal pipe are fixedly sleeved with connecting sleeves, and the connecting sleeves on the same side of all the horizontal tubes are fixedly arranged on the fixed plate, a plurality of heat exchange assemblies are uniformly arranged on two sides of the horizontal tubes in the heat exchange element, the heat exchange assembly comprises a fixed sleeve and annular fins, the annular fins which are uniformly distributed are fixedly sleeved on the outer side wall of the fixed sleeve, and the fixed sleeve is fixedly installed on the horizontal tube. The heat exchanger of the gas boiler provided by the invention has the advantages of reducing the flow velocity and enhancing the heat utilization rate of gas.)

1. A heat exchanger of a gas boiler is characterized by comprising a heat exchange part (1), a connecting sleeve (2), a heat exchange component (4), a heat contact component (5), a heating part (6) and a flow blocking mechanism (7), wherein the heat exchange part (1) comprises horizontal pipes (11), connecting elbows (12), water inlet connecting pipes (13) and water outlet connecting pipes (14), the horizontal pipes (11) which are arranged in parallel are mutually connected through the connecting elbows (12) in sequence to form a coiled pipe, and the two ends of the coiled pipe are respectively and fixedly provided with the water inlet connecting pipes (13) and the water outlet connecting pipes (14); the two ends of each horizontal pipe (11) are fixedly sleeved with connecting sleeves (2), and the connecting sleeves (2) on the same side of all the horizontal pipes (11) are fixedly arranged on the fixing plate (3); the heat exchange assemblies (4) are uniformly arranged on two sides of a horizontal tube (11) in the heat exchange piece (1), each heat exchange assembly (4) comprises a fixed sleeve (41) and an annular fin (42), the outer side wall of each fixed sleeve (41) is fixedly sleeved with a plurality of uniformly distributed annular fins (42), and the fixed sleeves (41) are fixedly arranged on the horizontal tube (11); a plurality of heat contact assemblies (5) with the same specification are arranged between the two fixing plates (3); each connecting elbow (12) is provided with a heating part (6); each horizontal pipe (11) is internally provided with a flow resisting mechanism (7).

2. The gas boiler heat exchanger according to claim 1, wherein the heat contacting assembly (5) comprises a planar copper sheet (51) and a corrugated copper sheet (52), the planar copper sheet (51) is fixedly connected to both ends of the corrugated copper sheet (52), and the planar copper sheets (51) on both sides of the corrugated copper sheet (52) are fixedly connected to the inner walls of the two fixing plates (3), respectively.

3. A gas boiler heat exchanger according to claim 2, characterized in that the horizontal tubes (11) in the heat exchanger (1) are provided with heat contacting assemblies (5) on both sides.

4. The gas boiler heat exchanger according to claim 1, wherein the warming member (6) comprises a pipe bending sleeve (61) and arc fins (62), a plurality of arc fins (62) arranged in an arc shape are fixedly embedded on the outer side wall of the pipe bending sleeve (61), and the pipe bending sleeve (61) is fixedly sleeved on the connecting elbow (12).

5. The gas boiler heat exchanger according to claim 1, wherein the flow blocking mechanism (7) comprises a first corrugated flow blocking plate (71), a second corrugated flow blocking plate (72) and a rotating plate (73), the first corrugated flow blocking plate (71) and the second corrugated flow blocking plate (72) are distributed in a staggered manner to form a set of spiral drainage plates and are fixedly installed on the inner wall of the horizontal pipe (11), and the rotating plates (73) are rotatably connected with each other and installed in the horizontal pipe (11) at both sides of the spiral drainage plates.

6. A gas boiler heat exchanger according to claim 1, characterized in that the diameter of the ring-shaped fins (42) on the fixing bushing (41) is expanded in turn, and the ring-shaped fins (42) are tapered in a half arc.

Technical Field

The invention relates to the field of exchangers, in particular to a heat exchanger of a gas boiler.

Background

Heat exchangers (also known as heat exchangers or heat exchange devices) are devices used to transfer heat from a hot fluid to a cold fluid to meet specified process requirements, and are an industrial application of convective and conductive heat transfer. Heat exchangers can be classified in different ways. The operation process can be divided into three categories of dividing wall type, mixed type and heat accumulating type (or called regenerative type); the degree of compactness of the surface thereof can be classified into two types, compact and non-compact.

The gas heat exchanger heats the heat fins and the water pipe by using natural gas combustion, and in the using process, if the flow velocity of water flow in the water pipe is large, the gas heat exchange efficiency is reduced, more gas energy is wasted, and the overall heat efficiency of the exchanger is low;

the contact time of the water flow and the water pipe is fixed, namely the heating time is fixed, so that the heat absorption capacity of the water flow is small in unit area and time, and the heat efficiency is also low; most gas heat exchangers tend to dissipate heat at the turns, and the heating effect at the turns is poor, thereby limiting the thermal efficiency of the exchanger. Therefore, it is necessary to provide a heat exchanger for a gas boiler to solve the above technical problems.

Disclosure of Invention

The present invention is directed to a heat exchanger for a gas boiler that solves the problems of the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: a heat exchanger of a gas boiler comprises a heat exchange part, a connecting sleeve, a heat exchange assembly, a heat contact assembly, a heating part and a flow blocking mechanism, wherein the heat exchange part comprises horizontal pipes, connecting elbows, water inlet connecting pipes and water outlet connecting pipes; the two ends of each horizontal pipe are fixedly sleeved with connecting sleeves, and the connecting sleeves on the same sides of all the horizontal pipes are fixedly arranged on the fixing plate; the heat exchange assemblies are uniformly arranged on two sides of a horizontal tube in the heat exchange piece and comprise fixed sleeves and annular fins, the outer side walls of the fixed sleeves are fixedly sleeved with the annular fins which are uniformly distributed, and the fixed sleeves are fixedly arranged on the horizontal tube; the heat contact assemblies with the same specification are arranged between the two fixing plates; each connecting elbow is provided with a heating part; each horizontal pipe is internally provided with a flow blocking mechanism.

Preferably, the heat contact assembly comprises a plane copper sheet and a wave copper sheet, the two ends of the wave copper sheet are fixedly connected with the plane copper sheet, and the plane copper sheets on the two sides of the wave copper sheet are fixedly connected with the inner walls of the two fixing plates respectively.

Preferably, both sides of a horizontal pipe in the heat exchange piece are provided with heat contact assemblies.

Preferably, the heating part comprises a bent pipe sleeve and arc fins, the arc fins arranged in an arc shape are fixedly embedded on the outer side wall of the bent pipe sleeve, and the bent pipe sleeve is fixedly sleeved on the connecting elbow.

Preferably, the flow blocking mechanism comprises a first wave-shaped flow blocking plate, a second wave-shaped flow blocking plate and rotating plates, the first wave-shaped flow blocking plate and the second wave-shaped flow blocking plate are distributed in a staggered mode to form a group of spiral drainage plates and are fixedly installed on the inner wall of the horizontal pipe, and the rotating plates which are connected in a rotating mode are installed in the horizontal pipe on the two sides of each spiral drainage plate.

Preferably, the diameters of the annular fins on the fixing sleeve are sequentially expanded, and the annular fins are in a half-arc conical shape.

Compared with the related art, the heat exchanger of the gas boiler provided by the invention has the following beneficial effects:

(1) according to the invention, the fixed sleeve in the heat exchange assembly is provided with a plurality of groups of annular fins, and the surface area of the fixed sleeve is larger than that of the traditional circular tube, so that the heat exchange area is greatly increased, more heat can be absorbed in the same time, the heat utilization rate of fuel gas is increased, and the overall heat efficiency of the exchanger is improved.

(2) In the invention, the flow blocking mechanism is arranged in the horizontal pipe, because the spiral drainage plate formed by the first wave-shaped flow blocking plate and the second wave-shaped flow blocking plate can increase the water flow resistance and increase the water flow stroke, the contact time and the contact area of the water flow and the pipe wall can be increased, the absorbed fuel gas heat is increased, the heat efficiency is improved, and the two rotating plates for blocking the water flow reduce the water flow velocity in the exchanger; the heating part added on the connecting elbow strengthens the temperature of water liquid inside the bent part of the coiled pipe, simultaneously avoids the condition of low heating efficiency of the connecting elbow, and improves the heat exchange efficiency compared with the traditional round pipe.

Drawings

FIG. 1 is a schematic structural view of a preferred embodiment of a heat exchanger for a gas boiler according to the present invention;

FIG. 2 is a schematic structural view of the heat exchange assembly shown in FIG. 1;

fig. 3 is a schematic structural view of the flow blocking mechanism shown in fig. 1;

fig. 4 is a perspective view of the flow blocking mechanism shown in fig. 3.

Reference numbers in the figures: 1. the heat exchanger comprises a heat exchange piece, 11, a horizontal pipe, 12, a connecting elbow, 13, a water inlet connecting pipe, 14, a water outlet connecting pipe, 2, a connecting sleeve, 3, a fixing plate, 4, a heat exchange component, 41, a fixing sleeve, 42, an annular fin, 5, a heat contact component, 51, a plane copper sheet, 52, a wave-shaped copper plate, 6, a heating piece, 61, a bent pipe sleeve, 62, an arc-shaped fin, 7, a flow blocking mechanism, 71, a first wave-shaped flow blocking plate, 72, a second wave-shaped flow blocking plate, 73 and a rotating plate.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

Referring to fig. 1, 2, 3 and 4 in combination, a heat exchanger of a gas boiler comprises a heat exchanger 1, a connecting sleeve 2, a heat exchange assembly 4, a heat contact assembly 5, a heating element 6 and a flow blocking mechanism 7, wherein the heat exchanger 1 comprises horizontal pipes 11, connecting elbows 12, water inlet connecting pipes 13 and water outlet connecting pipes 14, a plurality of parallel horizontal pipes 11 are connected with each other sequentially through the connecting elbows 12 to form a coiled pipe, two ends of the coiled pipe are respectively and fixedly provided with the water inlet connecting pipes 13 and the water outlet connecting pipes 14, two ends of each horizontal pipe 11 are respectively and fixedly sleeved with the connecting sleeve 2, the connecting sleeves 2 on the same side of all the horizontal pipes 11 are fixedly arranged on a fixing plate 3, a plurality of heat exchange assemblies 4 are uniformly arranged on two sides of the horizontal pipes 11 in the heat exchanger 1, each heat exchange assembly 4 comprises a fixing sleeve 41 and an annular fin 42, the outer side wall of the fixed sleeve 41 is fixedly sleeved with a plurality of uniformly distributed annular fins 42, and the fixed sleeve 41 is fixedly installed on the horizontal tube 11. The horizontal pipe 11 is introduced with cold water through the water inlet connecting pipe 13, heat is transferred to the heat exchange fin group 2 through gas combustion, the cold water in the horizontal pipe 11 is heated and then the hot water is discharged through the water outlet connecting pipe 14, so that heat exchange is realized, the fixed sleeve 41 in the heat exchange assembly 4 is provided with the plurality of groups of annular fins 42, the surface area is larger than that of the traditional circular pipe, the heat exchange area is greatly increased, the heat absorbed in the same time is more, the heat utilization rate of gas is increased, and the overall heat efficiency of the heat exchanger is improved.

Referring to fig. 1, a plurality of heat contact assemblies 5 with the same specification are installed between two fixing plates 3, the heat contact assemblies 5 are arranged on two sides of a horizontal pipe 11 in the heat exchanger 1, each heat contact assembly 5 comprises a plane copper sheet 51 and a wave copper sheet 52, two ends of each wave copper sheet 52 are fixedly connected with the plane copper sheets 51, the plane copper sheets 51 on two sides of each wave copper sheet 52 are fixedly connected with the inner walls of the two fixing plates 3 respectively, the heat contact assemblies 5 are arranged on two sides of the horizontal pipe 11 in the heat exchanger, and the wave copper sheets 52 in the heat contact assemblies 5 increase the heat exchange area, so that the temperatures on two sides of the horizontal pipe 11 are enhanced, and the efficiency of temperature loss on two sides of the horizontal pipe 11 is also reduced.

Referring to fig. 1, each connect and all install heating element 6 on the elbow 12, heating element 6 includes elbow pipe box 61 and arc fin 62, the fixed gomphosis of the lateral wall of elbow pipe box 61 has the arc fin 62 that a plurality of arc set up, and the fixed cup joint of elbow pipe box 61 is on connecting elbow 12, through the heating element 6 that increases on connecting elbow 12, has strengthened the inside water liquid temperature of the crooked department of coiled pipe, has avoided the situation that connecting elbow 12 heating efficiency is low simultaneously, compares traditional circular pipe, has improved heat exchange efficiency.

Referring to fig. 1 and 3, each of the horizontal tubes 11 is installed with a flow blocking mechanism 7, the flow blocking mechanism 7 includes a first wave-shaped flow blocking plate 71, a second wave-shaped flow blocking plate 72 and a rotating plate 73, the first wave-shaped flow blocking plate 71 and the second wave-shaped flow blocking plate 72 are distributed in a staggered manner to form a set of spiral drainage plates and are fixedly installed on the inner wall of the horizontal tube 11, and the rotating plates 73 rotatably connected are installed in the horizontal tubes 11 on both sides of the spiral drainage plates, the spiral drainage plates formed by the first wave-shaped flow blocking plate 71 and the second wave-shaped flow blocking plate 72 can increase the water flow resistance and increase the water flow stroke, so as to increase the contact time and area between the water flow and the tube wall, increase the absorbed gas heat, and improve the thermal efficiency, while the two rotating plates 73 for blocking the water flow reduce the water flow rate in the exchanger.

The diameters of the annular fins 42 on the fixing sleeve 41 are sequentially expanded, the annular fins 42 are in a half arc conical shape, and the expanded annular fins 42 increase the heat of the fuel gas absorbed by the fixing sleeve 41.

The working principle of the heat exchanger of the gas boiler provided by the invention is as follows: the horizontal pipe 11 is introduced with cold water through the water inlet connecting pipe 13, heat is transferred to the heat exchange fin group 2 through gas combustion, cold water in the horizontal pipe 11 is heated and then hot water is discharged through the water outlet connecting pipe 14, so that heat exchange is realized, the fixed sleeve 41 in the heat exchange assembly 4 is provided with a plurality of groups of annular fins 42, the surface area is larger than that of the traditional circular pipe, so that the heat exchange area is greatly increased, more heat is absorbed in the same time, the heat utilization rate of gas is increased, the integral heat efficiency of the exchanger is improved, the flow blocking mechanism 7 is arranged in the horizontal pipe 11, because the spiral drainage plate formed by the first wave-shaped flow blocking plate 71 and the second wave-shaped flow blocking plate 72 can increase the water flow resistance and increase the stroke of water flow, so that the contact time and the area between the water flow and the pipe wall can be increased, the absorbed gas heat is increased, the heat efficiency is improved, the water liquid velocity of flow in the exchanger has been reduced, and the heat subassembly 5 that touches that horizontal pipe 11's both sides all were equipped with in the heat exchanger, and the wave form copper 52 that touches in the heat subassembly 5 has increased heat transfer area, make the temperature reinforcing of horizontal pipe 11 both sides, the efficiency that the temperature of horizontal pipe 11 both sides runs off has also been reduced simultaneously, the piece 6 that heats that increases on connecting elbow 12 simultaneously, the inside water liquid temperature of coiled pipe turn department has been strengthened, the situation that connecting elbow 12 heating efficiency is low has been avoided, compare traditional circular pipe, heat exchange efficiency has further been improved.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.