Heat exchange structure

Abstract

The utility model relates to the technical field of heaters, in particular to a heat exchange structure which comprises a box body with an input interface and an output interface. The heat conduction mechanism and the heat exchange mechanism are arranged in the box body; at least part of the heat conduction mechanism is connected with the heat exchange mechanism, the temperature of the heat conduction mechanism is increased through gas input into a cavity of the box body, heat is transferred into the heat exchange mechanism, and the heat exchange structure is used for effectively recycling tail gas of the heater so as to achieve the effects of energy conservation and emission reduction. And secondly, the heat exchange structure can meet the adaptation of a water heating machine and an air heating machine, and the structure is optimized and adjusted according to the tail gas output characteristics of the two heaters, so that the effective heat energy utilization rate is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of heaters, in particular to a heat exchange structure. Background Art

[0002] A parking heater is an in-vehicle heating device independent of an automobile engine, which can preheat and warm up a vehicle engine and a cab without starting the engine, and is especially suitable for a low-temperature environment in winter. It mainly heats the water tank coolant by burning the fuel in the vehicle to achieve the purpose of heating the interior of the carriage and the engine.

[0003] Currently, common heaters include air heaters, specifically, a kind of air heater disclosed in the Chinese Patent Publication No. "CN208458260U", and the other is a water heater, specifically, a parking heater as disclosed in the Chinese Patent Publication No. "CN109736992A".

[0004] Whether it is an air heater or a water heater, high-temperature exhaust gas will be generated during their operation. Currently, there is no corresponding device to recycle this part of the exhaust gas, resulting in low effective heat energy utilization rate of the heater during operation. Based on this, in order to recycle this part of the high-temperature exhaust gas, we propose a heat exchange structure. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problems in the prior art that the exhaust gas is not recycled, resulting in low effective heat energy utilization rate of the heater during operation, and to propose a heat exchange structure.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] Design a heat exchange structure, including:

[0008] A box body having an input interface and an output interface;

[0009] And a heat conduction mechanism and a heat exchange mechanism disposed in the box body;

[0010] At least a part of the heat conduction mechanism is connected to the heat exchange mechanism, and the heat conduction mechanism is heated by the gas entering the chamber of the box body and transfers the heat to the heat exchange mechanism.

[0011] Further, the heat exchange mechanism includes at least one frame body, and a flow channel is arranged in the frame body. Among them, the heat conduction mechanism is arranged in the area defined by the frame body.

[0012] Further, two frame bodies are stacked up and down, and the two frame bodies are connected by a connector to achieve waterway connection. A joint is also connected to the outside of the frame body.

[0013] Further, the heat conduction mechanism is several fins installed in the frame body, and both ends of the fins penetrate into the interior of the frame body.

[0014] Further, a smoke exhaust mechanism is further included. The smoke exhaust mechanism is arranged in the gap between two layers of the frame body, and the output interface is opposite to the smoke exhaust mechanism.

[0015] Further, the smoke exhaust mechanism includes a first frame and a second frame that are symmetrically distributed. Turbulence plates are arranged on both the first frame and the second frame. A smoke exhaust channel is formed between several opposite turbulence plates, and the output interface is opposite to the output end of the smoke exhaust channel.

[0016] Further, both the first frame and the second frame are connected to two stacked frame bodies through locking parts.

[0017] Further, the side of the upper frame body has a necking part, and an installation space is formed between the necking part and the lower frame body;

[0018] A heat conduction pipe is fixedly installed in the installation space. The top of the heat conduction pipe is communicated with the input interface, the other end penetrates to the outside of the box body, and a diversion notch is further arranged at the bottom of the heat conduction pipe.

[0019] Further, two cover plates are hinged on the outside of the box body. The two cover plates respectively cover the output interface and the opening of the heat conduction pipe, and the cover plates are locked in a state through fasteners.

[0020] Further, the box body includes an upper cover, a lower cover and a front cover. The upper cover and the lower cover are welded, and the front cover is tightly connected to the upper cover and the lower cover through fasteners.

[0021] The heat exchange structure proposed by the present utility model has the beneficial effects that: the heat exchange structure in the present utility model is used to effectively recover and utilize the tail gas of the heater to achieve the effect of energy conservation and emission reduction. Secondly, the heat exchange structure can meet the adaptation of the water heater and the air heater. In view of the tail gas output characteristics of the two heaters, structural optimization and adjustment are also carried out to ensure the effective utilization rate of heat energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional view of the first embodiment of the present utility model;

[0023] Figure 2 It is an exploded view of the first embodiment of the present utility model;

[0024] Figure 3 It is a schematic diagram of the flow channel structure of the first embodiment of the present utility model;

[0025] Figure 4 Is a perspective view of the second embodiment of the present utility model;

[0026] Figure 5 Is an exploded view of the second embodiment of the present utility model;

[0027] Figure 6 Is a schematic structural view of the necking part of the second embodiment of the present utility model.

[0028] In the figure: 1, box body; 11, input interface; 12, output interface; 13, cover plate; 14, upper cover; 15, lower cover; 16, front cover; 2, heat conduction mechanism; 3, heat exchange mechanism; 31, frame body; 32, flow channel; 33, connecting piece; 34, joint piece; 35, necking part; 36, heat conduction pipe; 37, diversion notch; 4, smoke exhaust mechanism; 41, first rack; 42, second rack; 43, spoiler; 44, smoke exhaust channel. Specific implementation manners

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in 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 of the embodiments.

[0030] Embodiment 1

[0031] Refer to Figures 1-3 Is an embodiment of the present utility model, which discloses a heat exchange structure. This heat exchange structure is used for adapting to an existing parking heater to realize the recovery and utilization of the exhaust gas generated during the operation of the heater, so as to improve the effective heat energy utilization rate of the exhaust gas. In this embodiment, a water heater is taken as an example. The water heater is a prior art, and its specific structure will not be described in detail. When it works, it is used to heat water, and the discharged high-temperature exhaust gas is connected to this heat exchange structure for recovery and utilization to achieve the purpose of exhaust gas reuse;

[0032] Refer to FIGS. 1 and 2. Specifically, this heat exchange structure includes a box body 1 having an input interface 11 and an output interface 12. The input interface 11 is used to connect to the exhaust gas output port of the heater. A cover plate 13 is also hinged on the outside of the box body 1. The cover plate 13 covers the opening of the output interface 12. The cover plate 13 is locked in a state by fasteners. The design of the cover plate 13 is used to protect the output interface 12 when exhaust is not required, so as to improve the overall protection ability. Further, the fastener is a bolt passing through the cover plate 13, and it is fixed to the cover plate 13 by being threadedly connected to the box body 1;

[0033] And a heat conduction mechanism 2 and a heat exchange mechanism 3 placed in the box body 1;

[0034] At least a part of the heat conduction mechanism 2 is connected to the heat exchange mechanism 3. The heat conduction mechanism 2 is heated by the gas in the chamber of the input box 1 and transfers the heat to the heat exchange mechanism 3.

[0035] Referring to Figure 2 , 3 , in some embodiments, the heat exchange mechanism 3 in the present utility model includes at least one frame body 31. In this embodiment, the frame body 31 is set as a rectangular frame body. In other embodiments, the frame body 31 can also be set as a circular or polygonal structure, etc. A flow channel 32 is arranged in the frame body 31. Obviously, the flow channel 32 should be an annular flow channel to ensure that the water flow can continuously flow along the annular flow channel. Among them, the heat conduction mechanism 2 is arranged in the area defined by the frame body 31.

[0036] Certainly, as a preference, in this embodiment, two frame bodies 31 are stacked up and down, and the water channels between the two frame bodies 31 are connected through a connecting piece 33. A joint piece 34 is also connected to the outside of the frame body 31. In this embodiment, the joint piece 34 is connected to the frame body 31 by means of bolt connection to achieve the purpose of convenient disassembly and replacement. Certainly, two through holes should be opened on the end face of the box 1, and the two through holes are used to avoid the connection of the joint piece 34.

[0037] Specifically, in this embodiment, two joint pieces 34 are used to realize water inlet and outlet. In the working state, the high-temperature tail gas of the heater enters the inside of the box 1. The high-temperature tail gas heats the heat conduction mechanism 2 to complete the utilization of heat energy. By adopting the design of stacking two frame bodies 31, firstly, it can increase the flow length of water, thereby prolonging the contact time between water and the heat conduction mechanism to improve the heating effect. Secondly, it can also increase the installation area of the heat conduction mechanism 2. The heat conduction mechanism 2 is in large-area contact with the high-temperature tail gas to improve the heat utilization rate of the high-temperature tail gas, and at the same time optimize the heating effect on water.

[0038] Among them, in this embodiment, it can also be used to preheat the water to be heated entering the heater. That is, since the working principle of the water heater is to heat water, before the water enters, by connecting this heat exchange structure, the water entering the heater can be preheated. In this way, the heating effect of the heater can be improved, and at the same time, the energy consumption of the heater can be saved.

[0039] Referring to Figure 2, It should be noted that in this embodiment, the heat conduction mechanism 2 is several fins installed in the frame 31. Both ends of the fins penetrate into the interior of the frame 31. The fin structure is a prior art and will not be elaborated here. By using the design of connecting multiple fins in sequence in part on the inner side of the frame 31, heat absorption and conduction can be effectively achieved. At the same time, the ends of the fins penetrate into the interior of the frame 31, effectively ensuring their contact with the water in the frame 31 to optimize the heat conversion efficiency.

[0040] Refer to Figure 2 , In some embodiments, the present utility model further includes an exhaust gas mechanism 4. The exhaust gas mechanism 4 is arranged in the gap between two layers of the frame 31. The output interface 12 is opposite to the exhaust gas mechanism 4. That is, in this embodiment, the exhaust gas mechanism 4 is used for guiding the gas to avoid the uniform heating of the upper and lower layers of the frame 31 by the gas flow. Secondly, the design of the exhaust gas mechanism 4 can also be used as a support mechanism between the two side frames 31 to improve the connection stability between the two side frames 31.

[0041] Refer to Figure 2 , On the basis of the above embodiment, in this embodiment, the exhaust gas mechanism 4 includes a symmetrically distributed first frame 41 and a second frame 42. Turbulence plates 43 are arranged on both the first frame 41 and the second frame 42. A smoke exhaust channel 44 is formed between a plurality of opposite turbulence plates 43. The output interface 12 is opposite to the output end of the smoke exhaust channel 44.

[0042] Refer to Figure 2 , Preferably, in this embodiment, two turbulence plates 43 are fixedly installed on the first frame 41, and one turbulence plate 43 is installed on the second frame 42, and this turbulence plate 43 is located between the two turbulence plates 43 of the first frame 41, thus forming four smoke exhaust channels 44;

[0043] As described above, in this embodiment, since the heat conversion efficiency of the water heater is high, the temperature of the exhaust gas discharged is relatively low. Therefore, the design of the same size for the upper and lower layers of the frame 31 is adopted, and the heat exchange efficiency is further improved. The high-temperature exhaust gas first blows from the gap of the heat exchange fins in the upper layer into the smoke exhaust channel 44, and then is discharged through the four-layer serpentine smoke exhaust channel 44, and the heat exchange efficiency reaches the maximum.

[0044] It should be noted that in this embodiment, the number of turbulence plates 43 is selected according to the characteristics of the exhaust gas emissions of different water heaters. This water heater device can also not add turbulence plates, and its test performance is the best. The water outlet temperature of the water heater is basically consistent with the exhaust gas emission temperature.

[0045] Preferably, in this embodiment, the first frame 41 and the second frame 42 are both connected to two stacked frames 31 through locking members. Specifically, the fasteners are set as bolts. Of course, bent edges should be provided on the first frame 41 and the second frame 42 for installing bolts.

[0046] Specifically, in this embodiment, the box body 1 includes an upper cover 14, a lower cover 15 and a front cover 16. The upper cover 14 and the lower cover 15 are welded together. The front cover 16 is fixedly connected to the upper cover 14 and the lower cover 15 through fasteners. Of course, the fasteners in this embodiment are also set as bolts. Secondly, the joint member 34 is arranged on one side of the front cover 16. The upper cover 14 and the lower cover 15 are welded together, and only the front cover 16 is movable and can be tightened or disassembled by bolts, aiming to facilitate the maintenance, repair and even replacement of the heat exchanger inside the heat exchange box in the later stage.

[0047] Embodiment 2

[0048] Refer to Figures 4-6 , in this embodiment, a warm air blower is taken as an example. The warm air blower is a prior art, and its specific structure will not be described in detail. When it works, it is used to heat water, and the discharged high-temperature tail gas is connected to this heat exchange structure for recycling to achieve the purpose of tail gas reuse; in addition, the same parts of this embodiment and Embodiment 1 will not be described in detail. The differences are as follows:

[0049] Refer to Figure 5 , in this embodiment, the side of the upper frame 31 has a necking part 35, and an installation space is formed between the necking part 35 and the lower frame 31.

[0050] A heat conduction pipe 36 is fixedly installed in the installation space. The heat conduction pipe 36 is a square pipe, and one end of it is sealed. The top of the heat conduction pipe 36 is communicated with the input interface 11, and the other end penetrates to the outside of the box body 1. A diversion notch 37 is also arranged at the bottom of the heat conduction pipe 36.

[0051] Refer to Figure 5 , preferably, in this embodiment, three spoiler plates 43 are fixedly installed on the first frame 41, and two spoiler plates 43 are installed on the second frame 42. The spoiler plates 43 on both sides are arranged staggeredly, so six smoke exhaust channels 44 are formed. This structural design is mainly used to adapt to the utilization requirements of the large tail gas heat of the warm air blower. Through the design of six smoke exhaust channels 44, the maximum tail gas utilization efficiency can be satisfied; after testing, there is no carbon deposition in the multiple smoke exhaust pipes of the warm air blower, and the water heat efficiency is extremely high. The tail gas discharge temperature is always about 15 degrees higher than the water outlet temperature, and the water outlet temperature after adding the warm air heat exchanger is basically the same as the tail gas discharge temperature.

[0052] Since the exhaust gas temperature generated by the air heater during operation is relatively high, in order to further expand its functionality, a design of adding a heat conduction pipe 36 is adopted in this solution. The heat conduction pipe 36 can be used for external insertion pipes to connect to smokeless stoves for smokeless cooking.

[0053] Specifically, when the above-mentioned insertion pipe is fully inserted, the diversion notch 37 is blocked by the insertion pipe at this time, and the high-temperature exhaust gas is then all transported along the insertion pipe to the smokeless stove for cooking. When only a part of the diversion notch 37 is blocked by the insertion of the end of the insertion pipe, a part of the high-temperature exhaust gas enters the smokeless stove to realize the food insulation function in the pot, and the other part of the exhaust gas still enters the box body 1 for heat exchange to complete the heating treatment of water.

[0054] In addition, in this embodiment, two cover plates 13 are hinged on the outer side of the box body 1. The two cover plates 13 respectively cover the output interface 12 and the opening of the heat conduction pipe 36. The cover plates 13 are locked in position by fasteners. The design of the cover plates 13 is used to protect the output interface 12 and the heat conduction pipe 36 when exhaust is not required, so as to improve the overall protection ability. Further, the fasteners are bolts inserted through the cover plates 13, and they are fixed to the cover plates 13 by threaded connection with the box body 1.

[0055] In summary, the heat exchange structure in this utility model is used to effectively recycle the exhaust gas of the heater to achieve the effect of energy conservation and emission reduction. Secondly, this heat exchange structure can meet the adaptation of the water heater and the air heater. For the exhaust gas output characteristics of the two heaters, structural optimization and adjustment have also been carried out to ensure the effective utilization rate of heat energy.

[0056] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A heat exchange structure, characterized in that: include: A box (1) having an input interface (11) and an output interface (12); and a heat conducting mechanism (2) and a heat exchanging mechanism (3) disposed in the box (1); At least part of the heat conducting mechanism (2) is connected to the heat exchanging mechanism (3); the heat conducting mechanism (2) heats up the gas in the chamber of the input box (1) and transfers the heat to the heat exchanging mechanism (3).

2. A heat exchange structure according to claim 1, characterized in that: The heat exchange mechanism (3) comprises at least one frame (31), in which a flow channel (32) is arranged, wherein the heat conduction mechanism (2) is arranged in an area defined by the frame (31).

3. A heat exchange structure according to claim 2, characterized in that: Two frames (31) are stacked up and down, and the two frames (31) are connected by a connecting piece (33) to achieve water communication. A joint piece (34) is also connected to the outside of the frame (31).

4. A heat exchange structure according to any one of claims 2 or 3, characterized in that: The heat conduction mechanism (2) is a plurality of fins installed in the frame (31), and both ends of the fins are inserted into the interior of the frame (31).

5. A heat exchange structure according to claim 3, characterized in that: It also comprises a smoke exhaust mechanism (4), wherein the smoke exhaust mechanism (4) is arranged in the gap between two layers of the frame (31), and the output interface (12) is opposite to the smoke exhaust mechanism (4).

6. A heat exchange structure according to claim 5, characterized in that: The smoke exhaust mechanism (4) comprises a first frame (41) and a second frame (42) which are symmetrically distributed, and spoilers (43) are provided on the first frame (41) and the second frame (42), and a smoke exhaust channel (44) is formed between the opposing spoilers (43), and the output interface (12) is opposite to the output tail end of the smoke exhaust channel (44).

7. A heat exchange structure according to claim 6, characterized in that: The first frame (41) and the second frame (42) are both connected to the two stacked frames (31) via locking members.

8. A heat exchange structure according to claim 3, characterized in that: The side of the upper frame (31) is provided with a constricted portion (35), and an installation space is formed between the constricted portion (35) and the lower frame (31); A heat conducting pipe (36) is fixedly installed in the installation space, the top of the heat conducting pipe (36) is connected to the input interface (11), the other end of the heat conducting pipe (36) passes through the outside of the box (1), and a flow guiding notch (37) is also provided at the bottom of the heat conducting pipe (36).

9. A heat exchange structure according to claim 8, characterized in that: Two cover plates (13) are hinged on the outside of the box body (1), and the two cover plates (13) respectively cover the output interface (12) and the opening of the heat pipe (36), and the cover plates (13) are locked in a maintained state by fasteners.

10. A heat exchange structure according to any one of claims 1 to 3, characterized in that: The box body (1) comprises an upper cover (14), a lower cover (15) and a front cover (16); the upper cover (14) and the lower cover (15) are welded together, and the front cover (16) is fastened to the upper cover (14) and the lower cover (15) by fasteners.

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