Natural gas heat supply combustion device suitable for low-temperature environment

Abstract

The utility model relates to the technical field of combustion equipment, in particular to a natural gas heat supply combustion device suitable for a low-temperature environment, which comprises a combustor body, and is characterized in that a preheating mechanism is arranged at an air inlet of the combustor body, a heat exchange sleeve is fixedly connected to a flame outlet of the combustor body, and the heat exchange sleeve is fixedly connected with the preheating mechanism. A heat exchange sleeve is installed on the outer wall of the combustor body, a temperature sensor is installed on the top of the heat exchange sleeve, a controller is installed on the outer wall of the combustor body, and a binding post is fixedly connected to the position, close to the controller, of the outer wall of the combustor body. The preheating mechanism in the device is used for preheating entering air, and the problems that when an existing combustion device is used in a low-temperature environment, due to the low environment temperature, combustion of fuel is insufficient, and the combustion efficiency is low are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of combustion equipment, in particular to a combustion device for natural gas heating applicable to low-temperature environments. Background Technique

[0002] The combustion device for natural gas heating is a device that uses natural gas mixed with various industrial waste gases as fuel for combustion heating. However, the existing combustion devices still have deficiencies, specifically: when the existing combustion devices are used in low-temperature environments, due to the low ambient temperature, the combustion of the fuel is incomplete and the combustion efficiency is low.

[0003] Therefore, a combustion device for natural gas heating applicable to low-temperature environments is needed to solve the problems raised in the above background technique. Content of the Utility Model

[0004] The purpose of the utility model is to provide a combustion device for natural gas heating applicable to low-temperature environments to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A combustion device for natural gas heating applicable to low-temperature environments, including a burner body, characterized in that: a preheating mechanism is arranged at the air inlet of the burner body, a heat exchange sleeve is fixedly connected at the flame outlet position of the burner body, a temperature sensor is installed at the top of the heat exchange sleeve, a controller is installed on the outer wall of the burner body, and a terminal is fixedly connected to the outer wall of the burner body and near the controller position.

[0007] The preheating mechanism includes a preheating box fixedly connected to the air inlet of the outer wall of the burner body, baffle plates are fixedly connected to the top and bottom of the inner wall of the preheating box, a resistance heating wire is fixedly connected to the center of the inside of the baffle plate, a heat exchange groove is opened in the inside of the baffle plate, a front guide pipe is fixedly connected to the front of the resistance heating wire on the inner wall of the heat exchange groove, a rear guide pipe is fixedly connected to the back of the front guide pipe inside the heat exchange groove, check valves are installed inside both the front guide pipe and the rear guide pipe, a guide groove is opened in the inside of the preheating box at the corresponding position of the front guide pipe, a return pipe is fixedly connected to the top of the inner wall of the guide groove, a delivery pump is fixedly connected to the bottom of the inner wall of the guide groove, an intake pipe is fixedly connected to the air inlet of the delivery pump, and a filter screen is fixedly connected to the front of the baffle plate on the inner wall of the preheating box.

[0008] As a preferred scheme of the utility model, the heat exchange sleeve is made of aluminum alloy, and the connection modes of the temperature sensor, the terminal and the controller are all electrical connections.

[0009] As a preferred embodiment of the present utility model, the preheating box and the intake pipe are both made of heat-insulating materials. The baffle plates, resistance heating wires, front guide pipes, and rear guide pipes are all provided in multiple groups, and the multiple groups of baffle plates are arranged staggered on the inner wall of the preheating box. The connection methods of the intake pipe and the return pipe to the heat exchange sleeve are both fixed connections.

[0010] As a preferred embodiment of the present utility model, the baffle plates are made of red copper. The one-way valve in the front guide pipe only allows gas to flow into the heat exchange tank, and the one-way valve in the rear guide pipe only allows gas to flow out of the heat exchange tank.

[0011] As a preferred embodiment of the present utility model, the front guide pipe and the rear guide pipe both penetrate through the baffle plates and extend into the guide grooves. The shape of the filter net is adapted to the shape of the preheating box.

[0012] As a preferred embodiment of the present utility model, the heat exchange tank is designed in a U-shaped structure. The connection methods of the resistance heating wire, the delivery pump, and the controller are all electrical connections.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. In the present utility model, by designing a combustion device for natural gas heating applicable to low-temperature environments, the preheating mechanism in the device is used to preheat the incoming air. The burner body is started, and the burner body sucks the outside air into the preheating box. The controller starts the resistance heating wire, and the resistance heating wire heats the baffle plates. The low-temperature outside air flows along the baffle plates in the preheating box. During the flow, the low-temperature air absorbs the heat in the baffle plates, and the temperature of the air rises. The heated high-temperature air enters the burner body along the preheating box. The burner body mixes the high-temperature air with natural gas fuel and ignites it. The ignited natural gas fuel is ejected from the burner body, and the flame heats the air in the heat exchange sleeve. The temperature of the air in the heat exchange sleeve rises. The controller starts the delivery pump, and the delivery pump sends the air in the heat exchange sleeve into the guide grooves through the intake pipe. The high-temperature air in the guide grooves flows into the heat exchange tank through the front guide pipe and flows out through the rear guide pipe. When the high-temperature air flows in the heat exchange tank, it heats the baffle plates. The air flowing out will flow back into the heat exchange sleeve along with the low-temperature air in the guide grooves through the return pipe. The air continuously flowing between the heat exchange sleeve and the preheating box heats the incoming low-temperature air through the baffle plates, solving the problem that in the prior art, when the combustion device is used in a low-temperature environment, due to the low environmental temperature, the fuel burns incompletely and the combustion efficiency is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 is a partial front cross-sectional view of the preheating box of the present utility model;

[0017] Figure 3 For the present utility model Figure 2 is the enlarged view of part A in it.

[0018] In the figure: 1, burner body; 2, preheating mechanism; 3, heat exchange sleeve; 4, temperature sensor; 5, controller; 6, terminal; 201, preheating box; 202, baffle plate; 203, resistance heating wire; 204, heat exchange tank; 205, front diversion pipe; 206, rear diversion pipe; 207, check valve; 208, diversion groove; 209, return pipe; 210, delivery pump; 211, intake pipe; 212, filter screen. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are given. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0023] In an embodiment, please refer to Figures 1-3 The present utility model provides a technical solution:

[0024] A combustion device for natural gas heating applicable to low-temperature environments, comprising a burner body 1. A preheating mechanism 2 is provided at the air inlet of the burner body 1. A heat exchange sleeve 3 is fixedly connected to the flame outlet position of the burner body 1. A temperature sensor 4 is installed at the top of the heat exchange sleeve 3. A controller 5 is installed on the outer wall of the burner body 1. A terminal 6 is fixedly connected to the outer wall of the burner body 1 and near the controller 5;

[0025] Among them, the heat exchange sleeve 3 is made of aluminum alloy. The connection methods of the temperature sensor 4, the terminal 6 and the controller 5 are all electrical connections;

[0026] In this embodiment, referring to Figure 2 and Figure 3 , the preheating mechanism 2 includes a preheating box 201 fixedly connected to the air inlet of the outer wall of the burner body 1. Baffle plates 202 are fixedly connected to the top and bottom of the inner wall of the preheating box 201. A resistance heating wire 203 is fixedly connected to the center of the inside of the baffle plate 202. A heat exchange groove 204 is opened inside the baffle plate 202. A front guide pipe 205 is fixedly connected to the front of the resistance heating wire 203 on the inner wall of the heat exchange groove 204. A rear guide pipe 206 is fixedly connected to the back of the front guide pipe 205 inside the heat exchange groove 204. Check valves 207 are installed inside both the front guide pipe 205 and the rear guide pipe 206. A guide groove 208 is opened inside the preheating box 201 at the corresponding position of the front guide pipe 205. A return pipe 209 is fixedly connected to the top of the inner wall of the guide groove 208. A delivery pump 210 is fixedly connected to the bottom of the inner wall of the guide groove 208. An intake pipe 211 is fixedly connected to the intake port of the delivery pump 210. A filter screen 212 is fixedly connected to the front of the baffle plate 202 on the inner wall of the preheating box 201;

[0027] Among them, the preheating box 201 and the intake pipe 211 are both made of heat-insulating materials. There are multiple sets of baffle plates 202, resistance heating wires 203, front guide pipes 205, and rear guide pipes 206. The multiple sets of baffle plates 202 are arranged staggeredly on the inner wall of the preheating box 201. The connection methods of the intake pipe 211 and the return pipe 209 with the heat exchange sleeve 3 are both fixed connections. The baffle plate 202 is made of copper. The check valve 207 in the front guide pipe 205 only allows gas to flow into the heat exchange tank 204, and the check valve 207 in the rear guide pipe 206 only allows gas to flow out of the heat exchange tank 204. The front guide pipe 205 and the rear guide pipe 206 both penetrate through the baffle plate 202 and extend into the guide groove 208. The shape of the filter screen 212 is adapted to the shape of the preheating box 201. The heat exchange tank 204 is designed with a U-shaped structure. The connection methods of the resistance heating wire 203, the delivery pump 210, and the controller 5 are all electrically connected. Start the burner body 1. The burner body 1 sucks the outside air into the preheating box 201. The controller 5 starts the resistance heating wire 203, and the resistance heating wire 203 will heat the baffle plate 202. The outside low-temperature air flows along the baffle plate 202 in the preheating box 201. When flowing, the low-temperature air will absorb the heat in the baffle plate 202. The temperature of the low-temperature air flowing in the preheating box 201 rises. The heated air enters the burner body 1 along the preheating box 201. The burner body 1 mixes the high-temperature air with the natural gas fuel and ignites it. The ignited natural gas fuel will be ejected from the burner body 1, and the flame will heat the air in the heat exchange sleeve 3. The temperature of the air in the heat exchange sleeve 3 rises. The controller 5 starts the delivery pump 210. The delivery pump 210 sends the air in the heat exchange sleeve 3 into the guide groove 208 through the intake pipe 211. The high-temperature air in the guide groove 208 will flow into the heat exchange tank 204 through the front guide pipe 205 and flow out through the rear guide pipe 206. When the high-temperature air flows in the heat exchange tank 204, it will heat the baffle plate 202. The controller 5 turns off the resistance heating wire 203. The air flowing out of the heat exchange tank 204 will flow back into the heat exchange sleeve 3 along with the low-temperature air in the guide groove 208 through the return pipe 209. The air continuously flowing between the heat exchange sleeve 3 and the preheating box 201 will heat the air flowing into the burner body 1 through the baffle plate 202.

[0028] Working process of the utility model: When the combustion device for natural gas heating applicable to low-temperature environment designed by this solution is in operation, the burner body 1 is started. The burner body 1 draws in outside air into the preheating box 201. The controller 5 starts the resistance heating wire 203, and the resistance heating wire 203 heats the baffle plate 202. The outside low-temperature air flows along the baffle plate 202 in the preheating box 201. When flowing, the low-temperature air absorbs the heat in the baffle plate 202, and the temperature of the low-temperature air flowing in the preheating box 201 rises. The heated air enters the burner body 1 along the preheating box 201. The burner body 1 mixes the high-temperature air with natural gas fuel and ignites it. The ignited natural gas fuel sprays out from the burner body 1, and the flame heats the air in the heat exchange sleeve 3. The temperature of the air in the heat exchange sleeve 3 rises. The controller 5 starts the delivery pump 210, and the delivery pump 210 sends the air in the heat exchange sleeve 3 into the diversion groove 208 through the intake pipe 211. The high-temperature air in the diversion groove 208 flows into the heat exchange groove 204 through the front diversion pipe 205 and flows out through the rear diversion pipe 206. When the high-temperature air flows in the heat exchange groove 204, it heats the baffle plate 202. The controller 5 turns off the resistance heating wire 203. The air flowing out from the heat exchange groove 204 flows back into the heat exchange sleeve 3 along the return pipe 209 together with the low-temperature air in the diversion groove 208. The air constantly flowing between the heat exchange sleeve 3 and the preheating box 201 heats the air flowing into the burner body 1 through the baffle plate 202, so that the air temperature during the combustion of the burner body 1 rises.

[0029] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A combustion device for natural gas heating applicable to low-temperature environments, comprising a burner body (1), characterized in that: A preheating mechanism (2) is provided at the air inlet of the burner body (1). A heat exchange sleeve (3) is fixedly connected to the flame outlet position of the burner body (1). A temperature sensor (4) is installed at the top of the heat exchange sleeve (3). A controller (5) is installed on the outer wall of the burner body (1). A terminal block (6) is fixedly connected to the outer wall of the burner body (1) and near the controller (5). The preheating mechanism (2) includes a preheating box (201) fixedly connected to the air inlet on the outer wall of the burner body (1). Baffle plates (202) are fixedly connected to both the top and bottom of the inner wall of the preheating box (201). A resistance heating wire (203) is fixedly connected to the center of the inside of the baffle plate (202). A heat exchange groove (204) is formed inside the baffle plate (202). A front guide pipe (205) is fixedly connected to the front of the resistance heating wire (203) on the inner wall of the heat exchange groove (204). A rear guide pipe (206) is fixedly connected to the back of the front guide pipe (205) inside the heat exchange groove (204). Check valves (207) are installed inside both the front guide pipe (205) and the rear guide pipe (206). A guide groove (208) is formed inside the preheating box (201) at the corresponding position of the front guide pipe (205). A return pipe (209) is fixedly connected to the top of the inner wall of the guide groove (208). A delivery pump (210) is fixedly connected to the bottom of the inner wall of the guide groove (208). An intake pipe (211) is fixedly connected to the air inlet of the delivery pump (210). A filter screen (212) is fixedly connected to the front of the baffle plate (202) on the inner wall of the preheating box (201).

2. The combustion device for natural gas heating applicable to low-temperature environments according to claim 1, wherein: The heat exchange sleeve (3) is made of aluminum alloy. The temperature sensor (4), the terminal block (6) and the controller (5) are all electrically connected.

3. A combustion device for natural gas heating applicable to low-temperature environments according to claim 1, characterized in that: The preheating box (201) and the intake pipe (211) are both made of heat-insulating materials. Multiple groups of baffle plates (202), resistance heating wires (203), front guide pipes (205) and rear guide pipes (206) are provided. The multiple groups of baffle plates (202) are arranged staggered on the inner wall of the preheating box (201). The intake pipe (211) and the return pipe (209) are both fixedly connected to the heat exchange sleeve (3).

4. A combustion device for natural gas heating applicable to low-temperature environments according to claim 1, characterized in that: The baffle plate (202) is made of copper. The check valve (207) inside the front guide pipe (205) only allows gas to flow into the heat exchange groove (204). The check valve (207) inside the rear guide pipe (206) only allows gas to flow out of the heat exchange groove (204).

5. A combustion device for natural gas heating applicable to low-temperature environments according to claim 1, characterized in that: Both the front guide pipe (205) and the rear guide pipe (206) penetrate through the baffle plate (202) and extend into the guide groove (208). The shape of the filter screen (212) is adapted to the shape of the preheating box (201).

6. A combustion device for natural gas heating applicable to low-temperature environments according to claim 1, characterized in that: The heat exchange groove (204) is designed in a U-shaped structure. The resistance heating wire (203), the delivery pump (210) and the controller (5) are all electrically connected.

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