CN111435034A - Heat exchange equipment - Google Patents

Abstract

The invention discloses a heat exchange device. The heat exchange device includes a casing, a burner and a heat exchange part; the burner includes a combustion column; the combustion column circumferentially surrounds a plurality of combustion ports; An installation space is formed between it and the heat exchange part. According to the heat exchange equipment of the present invention, the heat exchange area of the heat exchange equipment is large, thereby improving the heat exchange effect of the heat exchange equipment, and at the same time, the heat exchanger forms an insulating layer, and components such as lines of the heat exchange equipment inside the shell can be arranged in Avoid overheating in the installation space and ensure the safe operation of the heat exchange equipment.

Description

heat exchange equipment

technical field

The present invention relates to the field of heat exchange, in particular, to a heat exchange device.

Background technique

In the related art, heat exchange equipment such as a wall-hung boiler burns gas and heats water in a water pipe through a multi-stage heat exchanger, and the heated water can be transported to a user terminal for heating the user terminal. The water pipe needs to exchange heat with the combusted gas indirectly through the heat exchanger, which affects the heat exchange effect. At the same time, the combustion position of the gas is located at the bottom of the heat exchange equipment. In some cases, the gas flows upward into the heat exchanger before it is fully burned. The combustion efficiency is low, which affects the heat exchange effect, and the incomplete combustion is easy to produce nitrogen oxides and pollute the environment. .

In addition, the temperature of the combustion chamber of the heat exchange equipment is relatively high, and the lines near the combustion chamber are prone to aging due to long-term high temperature environment, which affects the safety of use.

SUMMARY OF THE INVENTION

The present invention aims to solve one of the technical problems in the related art at least to a certain extent. Therefore, the present invention proposes a heat exchange device with high heat exchange effect.

The heat exchange device according to the present invention includes a casing, a burner and a heat exchange part, the burner includes a combustion column, the combustion column circumferentially surrounds a plurality of combustion ports, and the heat exchange part is sleeved on the combustion On the outer side of the column, an installation space is formed between the casing and the heat exchange part.

According to the heat exchange equipment of the present invention, the heat exchange area of the heat exchange equipment is large, thereby improving the heat exchange effect of the heat exchange equipment, and at the same time, the heat exchanger forms an insulating layer, and components such as lines of the heat exchange equipment inside the shell can be Set in the installation space to avoid overheating and ensure the safe operation of the heat exchange equipment.

Further, the heat exchange part includes a heat exchange tube, the heat exchange tube is wound around the combustion column in an axial direction for multiple turns, and a combustion chamber is formed between the heat exchange tube and the combustion column.

Further, the heat exchange pipe is wound around the combustion column in multiple layers in the radial direction, the heat exchange pipe has a water inlet and a water outlet, and the water inlet communicates with the outermost part of the heat exchange pipe , the water outlet is communicated with the innermost part of the heat exchange pipe.

Further, the combustion column extends in the up-down direction, an exhaust device is arranged above the heat exchange pipe, and a spacer for shielding the upper end of the combustion chamber is arranged between the exhaust device and the heat exchange pipe. A baffle plate, a flue gas flow passage is formed between the outer edge of the baffle plate and the inner wall of the casing, and a flue gas flow gap is formed between the two adjacent circles of the water exchange pipes.

Further, the diameter of each of the combustion ports is 0.85mm-0.87mm.

Further, the combustion ports include a plurality of groups arranged at intervals along the axial direction of the combustion column, and the plurality of combustion ports in each group are uniformly distributed along the circumferential direction of the combustion column.

Further, the combustion chamber is an axisymmetric structure, the combustion column is located at the central axis of the combustion chamber, and a gas inlet is provided at the lower end of the burner.

Further, the hot water exchange pipe is a double coil.

Optionally, the burner further includes: a connecting portion, through which the combustion column is connected to the heat exchange portion, so that the burner and the heat exchange portion are formed as an integral piece.

Further, both the burner and the heat exchange part are stainless steel parts.

Additional aspects and advantages of the present invention will be set forth, in part, from the following description, and in part will be apparent from the following description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

1 is a schematic diagram of the internal structure of a heat exchange device according to an embodiment of the present invention;

FIG. 2 is a top view of a heat exchange device according to an embodiment of the present invention.

Reference number:

Heat exchange equipment 100, shell 1, installation space 2, heat exchange part 3, hot water exchange pipe 31, water inlet 311, water outlet 312, combustion chamber 4, burner 5, combustion column 51, combustion port 511, connecting part 52, The gas inlet 521 , the baffle 6 , the flue gas flow gap 81 , the flue gas flow passage 82 , the flue gas collection shell 91 , and the flue gas outlet 92 .

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "circumferential", etc. is based on the orientation or position shown in the accompanying drawings The relationship is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection, an electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction relationship between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

The present invention is described below in conjunction with the accompanying drawings and with reference to specific embodiments.

First, the heat exchange device 100 according to the embodiment of the present invention will be described with reference to FIG. 1 and FIG. 2 .

As shown in FIG. 1 and FIG. 2 , the heat exchange device 100 of the embodiment of the present invention may include a casing 1, a burner 5 and a heat exchange part 3. The burner 5 includes a combustion column 51, the combustion column 51 is cylindrical, and the combustion column 51 has a circumference To surround the plurality of combustion ports 511, the gas can enter the combustion column 51 and burn at the plurality of combustion ports 511, whereby the gas burns 360° in the circumferential direction on the peripheral surface of the combustion column 51, and the arc of the combustion column 51 The shaped surface is more conducive to the uniform distribution of airflow and combustion, and the airflow distribution of the flue gas generated after the combustion of the gas is uniform, which enhances the combustion stability of the gas and reduces the combustion noise.

The heat exchange part 3 is sleeved on the outside of the combustion column 51, the heat exchange part 3 surrounds the combustion column 51 in the circumferential direction, and the high temperature flue gas after combustion flows to the heat exchange part 3 for heat exchange (for example, the high temperature after combustion) The flue gas flows to the heat exchange part 3 in the radial direction to exchange heat with the heating water, and the heating water is heated and then sent to the user terminal for heating). The heat exchange area between the flue gas and the heat exchange part 3 is large, which improves the heat exchange effect.

As shown in FIG. 1 , an installation space 2 is formed between the outer casing 1 and the heat exchange part 3 , and components such as circuits of the heat exchange equipment 100 inside the outer casing 1 can be arranged in the installation space 2 , and the heat exchanger forms a thermal insulation in the combustion column 51 . layer to isolate the heat generated by the combustion of the combustion column 51 into the installation space 2, so as to prevent the heat exchange equipment 100 in the installation space 2 from overheating the wiring and other components inside the casing 1, and ensure the safe operation of the heat exchange equipment 100.

In some optional embodiments of the present invention, as shown in FIG. 1 , the heat exchange part 3 includes a hot water exchange pipe 31 , the heating hot water flows in the hot water exchange pipe 31 , and the hot water exchange pipe 31 surrounds the combustion column 51 in the axial direction It is wound for multiple turns, so that the multiple turns of the hot water exchange pipe 31 form a cylindrical insulating layer sleeved on the outside of the combustion column 51, and the combustion chamber 4 is formed between the hot water exchange pipe 31 and the combustion column 51. The flue gas flows to the hot water exchange pipe 31 to directly exchange heat with the heating water in the hot water exchange pipe 31, so there is no need to additionally set up special heat exchange equipment 100 such as a shell-and-tube heat exchanger, the structure is simple, the space is small, and the performance is improved. heat transfer efficiency.

At the same time, due to the low boiling point of water, the hot water exchange pipe 31 for flowing heating water can have an effective thermal insulation effect between the combustion chamber 4 and the installation space 2 . As a result, there is no need to apply a heat-insulating coating such as aluminum silicate on the surface of the heat exchanger, and the powder generated by the heat-insulating coating will not pollute the environment as usual, and will not cause fouling or scaling of components in the installation space 2 . Blockage can effectively improve the life of the heat exchange device 100 .

More specifically, as shown in FIG. 1 , the heat exchange pipe 31 is wound around the combustion column 51 in multiple layers in the radial direction, so that the heat exchange pipe 31 as a whole has a stronger thermal insulation effect. The hot water exchange pipe 31 has a water inlet 311 and a water outlet 312 . It can be understood that the heat exchange pipes 31 in the outer layer are far away from the combustion chamber 4 and have a lower temperature, while the heat exchange pipes 31 in the outer layer are close to the combustion chamber 4 and have a higher temperature. In this way, after the heating water enters the hot water exchange pipe 31 from the water inlet 311, it can be preliminarily heated in the outer hot water exchange pipe 31, and then the heating water flows into the inner hot water exchange pipe 31 for deep heating, and flows out from the water outlet 312 for exchange. Thermal device 100 and flows to the user terminal.

More specifically, as shown in FIG. 1 , the combustion column 51 extends in the up-down direction, that is, the axial direction of the combustion column 51 extends in the up-down direction, an exhaust device is provided above the hot water exchange pipe 31 , and the flue gas generated by the combustion of the combustion column 51 The heat exchange device 100 can flow upward and out of the heat exchange device 100 under the action of the ventilation device. Specifically, the upper end of the housing 1 is provided with a flue gas collecting shell 91, the flue gas collecting shell 91 has a flue gas outlet 92, a flue gas collecting cavity is provided in the flue gas collecting shell 91, and an exhaust device is provided in the flue gas collecting cavity, The exhaust device drives the flue gas upwards into the flue gas collection chamber and then out through the flue gas outlet 92 . In some examples, the exhaust device is a fan.

As shown in FIG. 1 , a baffle plate 6 for shielding the upper end of the combustion chamber 4 is provided between the exhaust equipment and the hot water exchange pipe 31 , and the baffle plate 6 can prevent the flue gas in the combustion chamber 4 from directly flowing upward to the flue gas collection cavity. A flue gas flow passage 82 is formed between the outer edge of the spoiler 6 and the inner wall of the casing 1, and a flue gas flow gap 81 is formed between the adjacent two circles of hot water exchange pipes 31, and the flue gas generated by the combustion in the combustion chamber 4 passes through. The flue gas flow gap 81 is discharged out of the combustion chamber 4, and bypasses the edge of the baffle plate 6 through the flue gas flow passage 82, and then flows to the flue gas collection cavity and is discharged (as shown by the arrow in FIG. 1). The flow path of the gas in the casing 1 is long, and the flue gas stays in the casing 1 for a long time, thereby increasing the heating time of the heat exchange part 3 and improving the heat exchange effect.

Specifically, the diameter of each combustion port 511 is 0.85mm-0.87mm. Therefore, the diameter of the combustion port 511 can not only satisfy the smooth passage of gas, but also prevent the diameter of the combustion port 511 from being too large, so as to ensure that the gas is fully burned at the combustion port 511 .

Specifically, as shown in FIG. 1 , the combustion ports 511 include multiple groups arranged at intervals along the axial direction of the combustion column 51 , and the plurality of combustion ports 511 in each group are uniformly distributed along the circumferential direction of the combustion column 51 . Therefore, the plurality of combustion ports 511 are distributed in an array on the outer peripheral surface of the combustion column 51 , thereby ensuring that the gas burns evenly on the surface of the combustion column 51 and the heat exchange portion 3 is uniformly heated.

Specifically, as shown in FIG. 1 , the combustion chamber 4 is of axisymmetric structure, and the combustion column 51 is located at the central axis of the combustion chamber 4 , thereby ensuring that the gas burns evenly on the surface of the combustion column 51 and the heat exchange portion 3 is uniformly heated . The lower end of the burner 5 is provided with a gas inlet 521, and the combustion column 51 is provided with a cavity. The gas enters the cavity from the gas inlet 521 and burns at the combustion port 511. The gas inlet 521 is arranged outside the combustion chamber 4 to avoid the gas in Gas inlet 521 is lit.

Specifically, as shown in FIG. 1 , the hot water exchange pipe 31 is a double coil pipe, and the two coil pipes constituting the hot water exchange pipe 31 are arranged side by side. Therefore, the flow rate of the hot water exchange pipe 31 is high, the heat exchange area is large, and the heat exchange effect is good.

Optionally, as shown in FIG. 1 , the burner 5 further includes a connecting portion 52 , and the combustion column 51 is connected to the heat exchange portion 3 through the connecting portion 52 , so that the burner 5 and the heat exchange portion 3 form an integral piece. In some examples, the connection portion 52 is located at the bottom of the combustion column 51 . In this way, the heat loss of the heat exchange part 3 during the heat exchange process can be reduced, and the heat exchange effect can be improved.

Specifically, the burner 5 and the heat exchange part 3 are both stainless steel parts. Therefore, the burner 5 is made of the same material as the heat exchange part 3, and when the condensed water generated on the surface due to the heat exchange of the heat exchange part 3 flows between the burner 5 and the heat exchange part 3, electrochemical corrosion will not occur, and the The heat transfer capacity of the heat exchange device 100 is low, and the service life is long.

Specifically, the burner 5 and the heat exchange part 3 are both integrated brazing parts, so that the burner 5 and the heat exchange part 3 are easy to manufacture.

Specifically, the burner 5 makes the air-fuel ratio reach an optimal ratio of 1:1 before combustion, which does not require external secondary air premixed combustion, which can effectively reduce combustion noise.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Embodiments are subject to variations, modifications, substitutions and variations.

Claims (10)

1. a heat exchange equipment, is characterized in that, comprises: shell; a burner including a combustion column circumferentially surrounding a plurality of combustion ports; a heat exchange part, the heat exchange part is sleeved on the outer side of the combustion column, and an installation space is formed between the outer shell and the heat exchange part. 2 . The heat exchange device according to claim 1 , wherein the heat exchange part comprises: a heat exchange pipe, the heat exchange pipe is wound around the combustion column in an axial direction for multiple turns, and the heat exchange pipe A combustion chamber is formed between the combustion column and the combustion column. 3 . The heat exchange device according to claim 2 , wherein the heat exchange pipe is wound around the combustion column in multiple layers in a radial direction, the heat exchange pipe has a water inlet and a water outlet, and the water inlet The water outlet communicates with the outermost part of the heat exchange pipe, and the water outlet communicates with the innermost part of the heat exchange pipe. 4 . The heat exchange device according to claim 2 , wherein the combustion column extends in an up-down direction, an exhaust device is provided above the heat exchange pipe, and the exhaust device is connected to the heat exchange pipe. 5 . A baffle plate for shielding the upper end of the combustion chamber is arranged between the baffle plates, and a flue gas flow passage is formed between the outer edge of the baffle plate and the inner wall of the casing, and the two adjacent circles of the water exchange pipes A flue gas flow gap is formed between them. 5 . The heat exchange device according to claim 1 , wherein the diameter of each of the combustion ports is 0.85mm-0.87mm. 6 . 6 . The heat exchange device according to claim 1 , wherein the combustion ports comprise a plurality of groups spaced along the axial direction of the combustion column, and the plurality of combustion ports in each group are arranged along the combustion column. 7 . uniformly distributed in the circumferential direction. 7 . The heat exchange device according to claim 2 , wherein the combustion chamber is an axisymmetric structure, the combustion column is located at the central axis of the combustion chamber, and the lower end of the burner is provided with a gas inlet. 8 . . 8. The heat exchange device according to claim 2, wherein the hot water exchange pipe is a double coil. 9 . The heat exchange device according to claim 1 , wherein the burner further comprises: a connecting part, the combustion column is connected to the heat exchange part through the connecting part, 10 . so that the burner and the heat exchange part are formed in one piece. 10 . The heat exchange equipment according to claim 9 , wherein the burner and the heat exchange part are both stainless steel parts. 11 .

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