阅读说明：本技术 一种高效换热装置 (High-efficient heat transfer device ) 是由 张兴雨 鲁志刚 王建新 肖向东 庄严 李成金 田敏 叶青 于 2021-07-28 设计创作，主要内容包括：本发明公开了一种高效换热装置,包括：燃烧室、换热管、回流烟道、燃烧器连接装置、烟囱、换热翅片、隔热筒和网孔板；燃烧室为两端设有梯形筒的筒型结构,两端封闭；在燃烧室封闭的两端对称开设有用以安装换热管的装配孔；换热管为中空的柱体结构,由内管、外管和封环组成；回流烟道设置于燃烧室开有烟囱的一端；回流烟道由多个挡板组成；挡板上开设有用以让换热管穿过的圆孔,且挡板的一端留有用以让烟气通过的豁口；隔热筒为两端设有梯形筒的筒型中空结构；隔热筒套装于燃烧室以及燃烧室外部的换热翅片上。本发明通过控制流体换热时间、换热温差、换热面积及换热梯次,在充分燃烧的状况下,实现流体的高效换热,提升能源利用率。(The invention discloses a high-efficiency heat exchange device, which comprises: the device comprises a combustion chamber, a heat exchange tube, a return flue, a combustor connecting device, a chimney, a heat exchange fin, a heat insulation cylinder and a mesh plate; the combustion chamber is of a cylinder structure with trapezoidal cylinders at two ends, and the two ends are closed; assembling holes for installing heat exchange tubes are symmetrically formed at the two closed ends of the combustion chamber; the heat exchange tube is of a hollow cylinder structure and consists of an inner tube, an outer tube and a seal ring; the return flue is arranged at one end of the combustion chamber, which is provided with a chimney; the return flue consists of a plurality of baffles; the baffle is provided with a round hole for the heat exchange tube to pass through, and one end of the baffle is provided with a notch for the smoke to pass through; the heat insulation cylinder is a cylinder-shaped hollow structure with trapezoidal cylinders at two ends; the heat insulation cylinder is sleeved on the combustion chamber and the heat exchange fins outside the combustion chamber. According to the invention, by controlling the fluid heat exchange time, the heat exchange temperature difference, the heat exchange area and the heat exchange gradient, the high-efficiency heat exchange of the fluid is realized under the condition of sufficient combustion, and the energy utilization rate is improved.)

1. An efficient heat exchange device, comprising: the device comprises a combustion chamber (1), a heat exchange tube (2), a return flue (3), a combustor connecting device (4), a chimney (5), heat exchange fins (6), a heat insulation cylinder (7) and a mesh plate (8); wherein the content of the first and second substances,

the combustion chamber (1) is of a cylinder structure with trapezoidal cylinders at two ends, and the two ends are closed; assembling holes for installing the heat exchange tubes (2) are symmetrically formed at the two closed ends of the combustion chamber (1); the bottom of one end of the combustion chamber (1) is provided with a connector communicated with the combustor connecting device (4), and the upper part of the other end is provided with a connector communicated with the chimney (5); the heat exchange fins (6) are arranged outside the combustion chamber (1);

the heat exchange tube (2) is of a hollow cylinder structure and consists of an inner tube (21), an outer tube (22) and a sealing ring (23); the inner pipe (21) is arranged in the outer pipe (22), and the two ends of the inner pipe (21) and the two ends of the outer pipe (22) are connected through a sealing ring (23), so that a closed space is formed between the inner pipe and the outer pipe of the heat exchange pipe (2); a plurality of vent holes (24) are formed in the outer pipe (22); the heat exchange pipe (2) is hermetically connected with the combustion chamber (1) through assembly holes at two ends of the combustion chamber (1);

the return flue (3) is arranged at one end of the combustion chamber (1) provided with a chimney (5); the return flue (3) consists of a plurality of baffles (31); the baffle (31) is a circular plate with the diameter equal to the inner diameter of the combustion chamber (1), a circular hole (32) for the heat exchange tube (2) to pass through is formed in the baffle (31), and a notch (33) for smoke to pass through is reserved at one end of the baffle (31); the baffle (31) is hermetically connected with the inner wall of the combustion chamber (1) and the heat exchange tube (2); the tail end of the return flue (3) is communicated to the chimney (5);

the heat insulation cylinder (7) is a cylindrical hollow structure with trapezoidal cylinders at two ends; the heat insulation cylinder (7) is sleeved on the combustion chamber (1) and the heat exchange fins (6) outside the combustion chamber (1); a through hole for the burner connecting device (4) to pass through is formed in the bottom of one end of the heat insulation cylinder (7), and a through hole for the chimney (5) to pass through is formed in the upper part of the other end of the heat insulation cylinder;

the combustor connecting device (4) is arranged at the bottom of the combustion chamber (1) and is connected with the combustion chamber (1) and the heat insulation cylinder (7) in a sealing manner; the chimney (5) is arranged at the top of the combustion chamber (1) and is connected with the combustion chamber (1) and the heat insulation cylinder (7) in a sealing way; the mesh plate (8) is arranged at one end of the heat insulation cylinder (7) close to the chimney (5).

2. The efficient heat exchange device of claim 1, wherein: the first return smoke inlet of the return flue (3) is positioned at the upper end of the combustion chamber (1), the next return smoke inlet of the smoke is positioned at the lower end of the combustion chamber (1), the next return smoke inlet is positioned at the upper end of the combustion chamber (1), and the rest is done in the same way; the last return smoke outlet is connected with a chimney (5), and the connection part is sealed.

Technical Field

The invention belongs to the technical field of high-temperature fluid heat exchange, and particularly relates to a high-efficiency heat exchange device.

Background

At present, utilize fuel or gas to mainly have the not enough in two aspects for the heat transfer device of heat supply source in the market, firstly heat transfer device simple structure adopts single-stage heat transfer more, and heat exchange efficiency is not high, and most heat is along with the flue gas directly discharges the seal chamber outside, and secondly when combustion power is big, heat transfer device structure size is great, and it is inconvenient to carry.

Disclosure of Invention

The invention aims to provide an efficient heat exchange device, which can improve the heat exchange efficiency by prolonging the heat exchange time, increasing the relative temperature of fluid, increasing the heat exchange gradient and enlarging the heat exchange area.

In order to achieve the purpose, the invention provides the following scheme: a high efficiency heat exchange device comprising: the device comprises a combustion chamber, a heat exchange tube, a return flue, a combustor connecting device, a chimney, a heat exchange fin, a heat insulation cylinder and a mesh plate; wherein the content of the first and second substances,

the combustion chamber is of a cylinder structure with trapezoidal cylinders at two ends, and the two ends are closed; assembling holes for installing heat exchange tubes are symmetrically formed at the two closed ends of the combustion chamber; the bottom of one end of the combustion chamber is provided with a connector communicated with the combustor connecting device, and the upper part of the other end of the combustion chamber is provided with a connector communicated with the chimney; the heat exchange fins are arranged outside the combustion chamber;

the heat exchange tube is of a hollow cylinder structure and consists of an inner tube, an outer tube and a sealing ring; the inner pipe is arranged in the outer pipe, and the inner pipe is connected with the two ends of the outer pipe through sealing rings, so that a closed space is formed between the inner pipe and the outer pipe of the heat exchange pipe; a plurality of vent holes are formed in the outer pipe; the heat exchange tube is hermetically connected with the combustion chamber through assembly holes at two ends of the combustion chamber and forms axial fit with the combustion chamber; the low-temperature fluid flows in from one end of the heat insulation cylinder, flows to the other end of the heat insulation cylinder through a hollow channel of the heat exchange tube and flows out through the mesh plate;

the backflow flue is arranged at one end of the combustion chamber, which is provided with a chimney; the return flue consists of a plurality of baffles; the baffle is a circular plate with the diameter equal to the inner diameter of the combustion chamber, a circular hole for the heat exchange tube to pass through is formed in the baffle, and a notch for the smoke to pass through is reserved at one end of the baffle; the baffle is hermetically connected with the inner wall of the combustion chamber and the heat exchange tube; the tail end of the return flue is communicated to the chimney;

the heat insulation cylinder is a cylindrical hollow structure with trapezoidal cylinders at two ends; the heat insulation cylinder is sleeved on the combustion chamber and the heat exchange fins outside the combustion chamber; the bottom of one end of the heat insulation cylinder is provided with a through hole for the burner connecting device to pass through, and the upper part of the other end of the heat insulation cylinder is provided with a through hole for the chimney to pass through;

the combustor connecting device is arranged at the bottom of the combustion chamber and is in sealing connection with the combustion chamber and the heat insulation cylinder; the chimney is arranged at the top of the combustion chamber and is connected with the combustion chamber and the heat insulation cylinder in a sealing way; the mesh plate is arranged at one end of the heat insulation cylinder close to the chimney.

Preferably, the first return smoke inlet of the return flue is positioned at the upper end of the combustion chamber, the next return smoke inlet of the flue gas is positioned at the lower end of the combustion chamber, the next return smoke inlet is positioned at the upper end of the combustion chamber, and the rest is done in sequence; and the last return smoke outlet is connected with a chimney, and the joint is sealed.

The invention has at least the following beneficial effects:

1) through the design of the return flue in the combustion chamber, the back pressure is increased, the flow velocity of high-temperature flue gas is reduced, the reaction time of combustible materials in the combustion chamber is prolonged, and sufficient combustion and heat exchange are guaranteed;

2) by the design of the relative positions of the heat exchange tubes and the heat exchange fins on the combustion chamber, the heat exchange area is increased, the maximization of the relative temperature difference of high and low temperature fluids is ensured, and the heat exchange is strengthened;

3) by means of the space structure design formed by the heat insulation cylinder and the combustion chamber, the low-temperature fluid is divided to form gradient heat exchange, and the heat exchange efficiency is improved;

4) through the design of a air mixing chamber consisting of the heat insulation cylinder, the combustion chamber and the mesh plate, the pressure of a heat absorption fluid flow channel is increased, the flow rate of the low-temperature fluid is reduced, the sufficient heat absorption time of the low-temperature fluid is ensured, and the heat exchange is strengthened.

Drawings

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

FIG. 2 is a schematic flow diagram of a high temperature combustion fluid and a low temperature fluid of the present invention;

FIG. 3 is a schematic view of a heat exchange tube of the present invention;

fig. 4 and 5 are schematic views of the baffle of the present invention.

Detailed Description

Embodiments of the present invention will now be described with reference to the accompanying drawings, and those skilled in the art will understand that the following embodiments are illustrative of the present invention only, and should not be construed as limiting the scope of the present invention. The specific techniques, connections, conditions, or the like, which are not specified in the examples, are performed according to the techniques, connections, conditions, or the like described in the literature in the art or according to the product specification. The materials, instruments or equipment are not indicated by manufacturers, and all the materials, instruments or equipment are conventional products which can be obtained by purchasing.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "provided" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention are understood according to specific situations.

Referring to fig. 1 to 5, the present invention provides a high efficiency heat exchange device, including: the device comprises a combustion chamber 1, a heat exchange tube 2, a return flue 3, a burner connecting device 4, a chimney 5, a heat exchange fin 6, a heat insulation cylinder 7 and a mesh plate 8;

the combustion chamber 1 is of a cylinder structure with trapezoidal cylinders at two ends, and the two ends are closed; assembling holes for installing the heat exchange tubes 2 are symmetrically formed at the two closed ends of the combustion chamber 1; the bottom of one end of the combustion chamber 1 is provided with a connector communicated with the combustor connecting device 4, and the upper part of the other end is provided with a connector communicated with the chimney 5; the heat exchange fins 6 are arranged outside the combustion chamber 1;

the heat exchange tube 2 is of a hollow cylinder structure and consists of an inner tube 21, an outer tube 22 and a seal ring 23; the inner tube 21 is arranged in the outer tube 22, and the two ends of the inner tube 21 and the outer tube 22 are connected through a seal ring 23, so that a closed space is formed between the inner tube and the outer tube of the heat exchange tube 2; a plurality of vent holes 24 are formed on the outer tube 22; the cryogenic fluid flows in from one end of the heat insulation cylinder 7, flows to the other end of the heat insulation cylinder 7 through the hollow channel of the heat exchange tube 2 and flows out through the mesh plate 8;

the return flue 3 is arranged at one end of the combustion chamber 1 provided with a chimney 5; the return flue 3 is composed of a plurality of baffles 31; the baffle 31 is a circular plate with the diameter equal to the inner diameter of the combustion chamber 1, a circular hole 32 for the heat exchange tube 2 to pass through is formed in the baffle 31, and a notch 33 for smoke to pass through is reserved at one end of the baffle 31; the position of the circular hole 32 on the baffle 31 is opened according to specific conditions, as shown in fig. 4 and 5; the baffle 31 is hermetically connected with the inner wall of the combustion chamber 1 and the heat exchange tube 2; the tail end of the return flue 3 is communicated to the chimney 5; the heat insulation cylinder 7 is a cylindrical hollow structure with trapezoidal cylinders at two ends; the heat insulation cylinder 7 is sleeved on the combustion chamber 1 and the heat exchange fins 6 outside the combustion chamber 1.

Referring again to fig. 1, the relative assembly relationships between the components of the present invention are as follows: the return flue 3 is arranged in the right end of the combustion chamber 1 and is combined with the wall surface of the combustion chamber 1 to form a multi-return-stroke sealed flue; the heat exchange tube 2 penetrates through a baffle of the return flue 3 and is lapped in assembling holes at two ends of the combustion chamber 1 to form axial fit with the combustion chamber 1, and a joint seam is arranged in a sealing manner; the burner connecting device 4 and the chimney 5 are respectively arranged at the bottom and the top of the combustion chamber 1, and the joint is sealed; the heat exchange fins 6 are fixed on the outer wall surface between the two end surfaces of the combustion chamber 1; the heat insulation cylinder 7 is sleeved on the heat exchange fins 6 outside the combustion chamber 1; the outlet of the chimney 5 and the outlet of the burner connecting device 4 on the heat insulation cylinder 7 are respectively in sealing fit with the chimney 5 and the burner connecting device 4; the mesh plate 8 is mounted on the end face of the heat insulation cylinder 7 with a chimney 5 connection port. According to the invention, by controlling the heat exchange time, the heat exchange temperature difference, the heat exchange area and the heat exchange gradient of the fluid, the high-efficiency heat exchange of the fluid is realized under the condition of full combustion, the energy utilization rate is improved, and the emission of pollutants is reduced; meanwhile, through reasonable combination design of the structure, miniaturization and modularization are achieved.

In a further optimized scheme, the first return stroke smoke inlet position (namely the notch 33) of the return flue 3 is positioned at the upper end of the combustion chamber 1, the next return stroke smoke inlet position of smoke is positioned at the lower end of the combustion chamber 1, the next return stroke smoke inlet position is positioned at the upper end of the combustion chamber 1, and the rest is done in sequence; the last return smoke outlet is connected with a chimney 5, and the connection part is sealed.

The principles of the present invention are illustrated below: high-temperature combustion fluid and low-temperature fluid respectively enter the heat exchange device through the combustor connecting device 4 and the left end of the heat insulation cylinder 7; the flow speed of the high-temperature combustion fluid entering the combustion chamber 1 is reduced under the action of the multi-return resistance of the return flue 3, so that the secondary full reaction heating of the high-temperature combustion fluid is ensured; the flue gas which is fully reacted is discharged into the atmosphere through a return flue 3 and a chimney 5; the low-temperature fluid flows into the heat insulation cylinder 7 and is proportionally divided by the trapezoid structure at the end part of the combustion chamber 1, part of the low-temperature fluid flows through the inside of the heat exchange tube 2, and part of the low-temperature fluid flows through an annular flow channel formed by the heat insulation cylinder 7 and the combustion chamber 1; the low-temperature fluid flowing through the inside of the heat exchange tube 2 fully absorbs the heat in the combustion chamber 1 in the heat exchange tube 2 and then flows out from the other end of the heat exchange tube 2; the low-temperature fluid flowing through the annular flow passage formed by the heat insulation cylinder 7 and the combustion chamber 1 fully absorbs the heat on the outer wall surface of the combustion chamber 1 and the heat exchange fins 6 in the annular flow passage and then flows out through the other end of the annular flow passage; the heating low-temperature fluid flowing out of the heat exchange tube 2 and the heating low-temperature fluid flowing out of the annular flow channel are uniformly mixed in a mixing chamber consisting of the mesh plate 8, the heat insulation cylinder 7 and the combustion chamber 1, and then flow out at a constant speed through the mesh plate 8; the mesh plate 8 and the heat exchange fins 6 can play a role in reducing the speed of the low-temperature fluid, so that the sufficient heat absorption time is ensured; the low-temperature fluid flowing through the annular flow passage formed by the heat insulation cylinder 7 and the combustion chamber 1 can fully absorb heat and play a role in heat insulation, so that the outer wall of the heat insulation cylinder 7 is prevented from forming high temperature to burn a human body.

It is to be understood that in the description of the present invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the purpose of convenience in describing the present invention, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.