Heat exchanger with dust filtering structure

Abstract

The heat exchanger with the dust filtering structure comprises a combustion chamber and a heat exchanger body, the heat exchanger body is installed in the combustion chamber, a filtering assembly is arranged below the heat exchanger body, a first filtering net is arranged above the heat exchanger body, the filtering assembly comprises an installation frame and a second filtering net, and a fixing groove is formed in one side of the combustion chamber. The mounting frame is clamped in the combustion chamber, one end of the mounting frame penetrates through the fixing groove, and the second filter screen is clamped in the mounting frame; a smoke exhaust box is detachably arranged above the combustion chamber, and a fan is further arranged on the smoke exhaust box. According to the heat exchanger, the filter assembly is arranged below the heat exchanger, the second filter screen is arranged above the heat exchanger, an interlayer structure is formed, and dust can be prevented from being adsorbed on the heat exchanger through cooperation of the filter assembly and the first filter screen, so that corrosion of the dust to the heat exchanger is reduced; and meanwhile, the influence of dust on the heat exchanger is reduced, so that the service life of the whole water heater is indirectly prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to heat exchanger technical field, more specifically, it is especially related to a heat exchanger with dust filtering structure. BACKGROUND

[0002] Gas water heater is through heat exchanger realizes the heating to cold water, uses, through gas produces high temperature flue gas, realizes the heating to heat exchanger through high temperature flue gas, and the heat exchange pipe in heat exchanger is circuitous, and cold water is heated into hot water when flowing in the pipe. However, gas water heater when burning heating, the combustion is not full and will produce certain flue gas, needs through the fan and exports the flue gas, but, the traditional heat exchanger does not have effective filtering structure, in the process of discharging smoke, the dust in flue gas can be directly adsorbed on heat exchanger, long time use, can cause dust to continuously accumulate, and the ash layer is too thick and can cause the reduction of heat exchange efficiency, increase the consumption of energy, also can reduce the service life of heat exchanger. SUMMARY

[0003] In order to solve the above technical problems, the utility model provides a kind of heat exchanger with dust filtering structure, to solve the technical problems of the reduction of heat exchange efficiency, the increase of energy consumption and the reduction of service life in prior art, traditional heat exchanger adsorbs dust in flue gas, long time.

[0004] The utility model discloses a heat exchanger with dust filtering structure aims and function, by following specific technical means is achieved:

[0005] A kind of heat exchanger with dust filtering structure, including combustion chamber and heat exchanger, the heat exchanger is installed in the combustion chamber, the heat exchanger below is provided with filter assembly, and the top is provided with first filter screen, the filter assembly includes installation frame and second filter screen, the combustion chamber side is provided with fixed slot, the installation frame is clamped in the combustion chamber, and one end is penetrated in the fixed slot, and the second filter screen is clamped in the installation frame;The combustion chamber top is detachably provided with smoke exhaust box, and the smoke exhaust box is also provided with fan.

[0006] According to a preferred embodiment, the installation frame is set as detachable structure, the second filter screen includes filter layer and adsorption layer, and the filter layer is below the adsorption layer.

[0007] According to a preferred embodiment, the first filter screen is clamped in the smoke exhaust box, and the smoke exhaust box side is provided with connecting slot, and one end of the first filter screen is clamped in the connecting slot;The smoke exhaust box is provided with through slot, and the smoke exhaust box is through the through slot with the fan.

[0008] According to a preferred embodiment, the fan top is provided with a smoke exhaust pipe, the top of the smoke exhaust pipe is detachably provided with a smoke exhaust cover plate, a smoke exhaust cavity is formed, a plurality of smoke exhaust grooves are formed on the smoke exhaust cover plate, an adsorption block is arranged above the fan, the adsorption block is a porous structure, and the adsorption block is clamped in the smoke exhaust cavity.

[0009] According to a preferred embodiment, the heat exchanger comprises two sets of end cover plates, a plurality of first through holes are formed in the two sets of end cover plates, a plurality of heat exchange pipes are arranged between the two sets of end cover plates, and the two ends of the heat exchange pipes are respectively arranged in the first through holes in the two sets of end cover plates; second through holes are formed in the two sides of the combustion chamber corresponding to the heat exchange pipes, the two ends of the heat exchange pipes are respectively arranged in the second through holes, and the two sets of heat exchange pipes are connected through bent pipes.

[0010] According to a preferred embodiment, the combustion chamber is provided with an inlet pipe and an outlet pipe on one side, the outlet pipe is arranged in a bent and wound manner and is sleeved on the combustion chamber, and the two sets of heat exchange pipes are respectively connected with the inlet pipe and the outlet pipe.

[0011] According to a preferred embodiment, a plurality of fins are arranged between the two sets of end cover plates, a plurality of connecting through holes are formed in the fins, the fins are sleeved on the heat exchange pipes through the connecting through holes, the fins are arranged in a circular arc shape, and a high-temperature-resistant coating is applied to the fins.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The filter assembly is arranged below the heat exchanger, and the first filter screen is arranged above the heat exchanger, so that a sandwich structure is formed. In the process of exhausting smoke, the smoke passes through the filter assembly and the second filter screen in the filter assembly, so that the ash layer in the smoke can be effectively removed. At the same time, the first filter screen can prevent the ash layer in the smoke exhaust box from being adsorbed on the heat exchanger. Through the cooperation of the filter assembly and the first filter screen, dust can be prevented from being adsorbed on the inside of the heat exchanger. The second filter screen has a two-layer structure, the lower layer is a filter layer, and the upper layer is an adsorption layer. The filter layer can intercept large dust particles, and the adsorption layer can adsorb small dust. In this way, dust can be prevented from entering the combustion chamber and adhering to the heat exchanger, the erosion of dust on the heat exchanger is reduced, the good working state of the heat exchanger is maintained, the influence of dust on the heat exchanger is reduced, and the service life of the entire water heater is indirectly prolonged.

[0014] 2. In the filter assembly, the second filter screen card is arranged in the mounting frame, the mounting frame is of detachable structure, convenient for installation and dismounting of the second filter screen, meanwhile, the fixing groove and the connecting groove are arranged on one side of the combustion chamber, one end of the mounting frame is arranged in the fixing groove, one end of the first filter screen is arranged in the connecting groove, through the fixing groove and the connecting groove, the filter assembly and the first filter screen are convenient to take out. When the filter assembly and the first filter screen are used for a period of time and accumulate certain impurities and dust, at this time, they can be conveniently taken out for replacement or thorough cleaning. Not only can the filtering effect be ensured to be in good condition all the time, but also the service life of the filter assembly and the first filter screen can be prolonged, the normal operation of the heat exchanger is ensured, and the working efficiency and stability of the whole system are improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the structure schematic diagram of the utility model after assembling;

[0016] Figure 2 is the structure schematic diagram of the utility model after dismounting;

[0017] Figure 3 is the structure schematic diagram of the first filter assembly;

[0018] Figure 4 is the structure schematic diagram of the heat exchanger of the utility model.

[0019] In the drawing, the corresponding relationship between the component name and the drawing number is as follows:

[0020] 11, combustion chamber;12, first filter screen;13, fixing groove;14, connecting groove;21, mounting frame;22, filter layer;23, adsorption layer;31, smoke exhaust box;32, fan;33, smoke exhaust pipe;34, smoke exhaust cover plate;35, adsorption block;36, fin;41, end cover plate;42, heat exchange pipe;43, water inlet pipe;44, water outlet pipe. DETAILED DESCRIPTION

[0021] The embodiment of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the technical scheme of the utility model, but cannot be used to limit the protection scope of the utility model.

[0022] Example:

[0023] As Figures 1 to 4As shown, the utility model provides a kind of heat exchanger with dust filtering structure, including combustion chamber 11 and heat exchanger, heat exchanger is installed in combustion chamber 11 inside, filter assembly is provided below heat exchanger, and first filter screen 12 is provided above, and the sandwich structure is formed, provides guarantee for the efficient operation of entire system.Filter assembly is mainly composed of mounting frame 21 and second filter screen, and mounting frame 21 plays the supporting role, it is clamped in combustion chamber 11, and one end is arranged in fixed groove 13.Not only ensure the stability of mounting frame 21, also make when needing to maintain or replace filter assembly, it can be more convenient to operate.Second filter screen is clamped in mounting frame 21, in the process of smoke exhaust, flue gas will first pass through filter assembly, and second filter screen in filter assembly can effectively remove dust in flue gas.The upper portion of combustion chamber 11 is detachably provided with smoke exhaust tank 31, when needing to clean or repair smoke exhaust tank 31, it can be easily disassembled.Smoke exhaust tank 31 is also provided with fan 32, and fan 32 provides powerful power for the discharge of flue gas, to ensure that flue gas can be smoothly discharged from system.Through the synergistic effect of first filter screen 12 and filter assembly above and below heat exchanger, dust can be effectively blocked and absorbed in heat exchanger inside.

[0024] As Figure 2 、 Figure 3 As shown, mounting frame 21 is provided as detachable structure, when needing to maintain, clean or replace filter screen of filter assembly, second filter screen can be disassembled from mounting frame 21, and operation is simple and convenient, and work efficiency is improved.Second filter screen is composed of filter layer 22 and adsorption layer 23.Filter layer 22 is below adsorption layer 23, and filter layer 22 is mainly responsible for intercepting larger dust particles, and it can effectively block large particle dust that can cause greater damage to equipment into subsequent link.And the adsorption layer 23 above can adsorb tiny dust, so that the filtering effect of second filter screen is obvious, can provide cleaner working environment for heat exchanger, and prolong the service life of equipment.

[0025] As Figure 1 、 Figure 2As shown, the first filter screen 12 is clamped in the smoke exhaust box 31, and a connecting groove 14 is formed on one side of the smoke exhaust box 31, and one end of the first filter screen 12 is clamped in the connecting groove 14, which not only ensures the stability of the filter screen during operation, but also facilitates disassembly and replacement when needed. The first filter screen 12 can effectively block dust from entering the smoke exhaust box 31, thereby protecting subsequent equipment from dust and avoiding the influence of the heat exchanger by dust from above. A through groove is formed on the smoke exhaust box 31, through which the smoke exhaust box 31 and the fan 32 are connected. After the flue gas is preliminarily filtered in the smoke exhaust box 31, it will enter the fan 32 through the through groove. The fan 32 plays a crucial role in the entire system, providing powerful power for flue gas exhaust. The operation of the fan 32 can generate sufficient airflow to quickly exhaust the flue gas from the system, ensuring smooth flue gas exhaust.

[0026] A smoke exhaust pipe 33 is provided on the top of the fan 32, which functions to discharge the flue gas treated by the fan 32 to the external environment. In order to facilitate maintenance and cleaning of the smoke exhaust system, a smoke exhaust cover plate 34 is detachably provided on the top of the smoke exhaust pipe 33. When it is necessary to check or clean the inside of the smoke exhaust pipe 33, the smoke exhaust cover plate 34 can be easily detached for corresponding operation, improving the maintainability of the entire system; a plurality of smoke exhaust grooves are formed on the smoke exhaust cover plate 34, which allow the flue gas to be uniformly discharged, avoiding the situation of excessive or insufficient local pressure, ensuring the stability and efficiency of flue gas exhaust. An adsorption block 35 is provided above the fan 32, which is a porous structure. This porous structure endows the adsorption block 35 with strong adsorption capacity, which can further adsorb harmful substances and small particles in the flue gas. The adsorption block 35 is clamped in the smoke exhaust cavity, and after the flue gas passes through the fan 32 and enters the smoke exhaust cavity, the adsorption block 35 can effectively remove the residual pollutants therein, improving the quality of flue gas exhaust and reducing environmental pollution

[0027] As Figure 2 , Figure 4As shown, the heat exchanger includes two sets of end cover plates 41 and multiple sets of heat exchange pipes 42. The two sets of end cover plates 41 are provided with multiple first through holes corresponding to each other, so that the multiple sets of heat exchange pipes 42 can be smoothly installed therein. The multiple sets of heat exchange pipes 42 are arranged between the two sets of end cover plates 41, and the two ends of the heat exchange pipes 42 are accurately inserted into the first through holes on the two sets of end cover plates 41, ensuring the stability and sealing of the heat exchange pipes 42, so that the heat exchange process can be efficiently and stably carried out. At the same time, the combustion chamber 11 is also provided with second through holes corresponding to the heat exchange pipes 42. The two ends of the heat exchange pipes 42 are inserted into these second through holes, further enhancing the connection stability between the heat exchange pipes 42 and the combustion chamber 11. In order to achieve better heat exchange effect, the two sets of heat exchange pipes 42 are connected by elbow pipes. The water body can flow smoothly in the heat exchange pipes 42, and fully exchange heat with the heat in the combustion chamber 11. The water inlet pipe 43 and the water outlet pipe 44 are arranged on one side of the combustion chamber 11. The water outlet pipe 44 is arranged in a curved and winding manner and is sleeved on the combustion chamber 11. Not only increases the contact area of the water outlet pipe 44 and the combustion chamber 11, improves the heat exchange efficiency, but also can effectively utilize the heat of the combustion chamber 11 to further heat the water in the water outlet pipe 44. The two sets of heat exchange pipes 42 are connected with the water inlet pipe 43 and the water outlet pipe 44 respectively, so that the heat exchange medium can circulate in the whole system, realizing the continuous heat exchange process.

[0028] A plurality of fins 36 are also arranged between the two sets of end cover plates 41. The fins 36 are provided with multiple connection through holes, and the fins 36 can be tightly sleeved on the heat exchange pipes 42 through the connection through holes. The fins 36 are arranged in a circular arc shape, which can increase the contact area of the fins 36 and the surrounding air, and improve the heat exchange efficiency. At the same time, the fins 36 are also coated with a high-temperature resistant coating. The high-temperature resistant coating can effectively protect the fins 36 from being damaged in high-temperature environment, prolonging the service life of the fins 36. During the heat exchange process, the fins 36 can rapidly transfer the heat in the heat exchange pipes 42 to the surrounding air, further improving the heat exchange efficiency of the heat exchanger.

[0029] The specific use mode and effect of the embodiment are as follows:

[0030] In use, the heat exchanger is installed inside the combustion chamber 11. Ensure that both ends of the heat exchange tube 42 are accurately threaded through the first through hole on the two sets of end cover plate 41 and the second through hole on both sides of the combustion chamber 11, and the two sets of heat exchange tubes 42 are connected by the elbow. Connect the water inlet pipe 43 and the water outlet pipe 44 at the appropriate position, and the water outlet pipe 44 is bent and tightly sleeved on the combustion chamber 11. Install the filter assembly below the heat exchanger, install the second filter screen in the installation frame 21, and the installation frame 21 is clamped in the combustion chamber 11 and one end is threaded in the fixed groove 13. The filter layer 22 is located below to intercept larger dust particles, and the adsorption layer 23 is located above to adsorb small dust. Above the heat exchanger, the first filter screen 12 is clamped in the smoke exhaust box 31, and one end of the first filter screen 12 is clamped in the connecting groove 14.

[0031] Install the smoke exhaust box 31 above the combustion chamber 11 and ensure that it can be detachably connected stably. Install the fan 32 on the smoke exhaust box 31, and ensure that the through slot on the smoke exhaust box 31 is through the fan 32. Install the smoke exhaust pipe 33 on the top of the fan 32, and detachably install the smoke exhaust cover plate 34 on the top of the smoke exhaust pipe 33. The adsorption block 35 is clamped above the fan 32.

[0032] In use, the water body flows from the water inlet pipe 43 into the heat exchange tube 42, exchanges heat with the combustion chamber 11 in the heat exchange tube 42, and then flows out from the water outlet pipe 44. At the same time, during the smoke exhaust process, the smoke first passes through the filter assembly, and the filter layer 22 and the adsorption layer 23 of the second filter screen effectively remove the dust in the smoke. Then the smoke passes through the first filter screen 12 for further filtration and enters the smoke exhaust box 31, and then enters the fan 32 through the through slot, and the fan 32 provides power to convey the smoke to the smoke exhaust pipe 33, and finally through the smoke exhaust slot on the smoke exhaust cover plate 34.

[0033] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments.

Claims

1. A heat exchanger having a dust filtering structure, comprising a combustion chamber (11) and a heat exchanger, characterized in that: The heat exchanger is installed in the combustion chamber (11), a filter assembly is arranged below the heat exchanger, and a first filter screen (12) is arranged above the heat exchanger, the filter assembly comprises a mounting frame (21) and a second filter screen, a fixed groove (13) is formed on one side of the combustion chamber (11), the mounting frame (21) is clamped in the combustion chamber (11) and penetrates into the fixed groove (13) at one end, and the second filter screen is clamped in the mounting frame (21); a smoke exhaust box (31) is detachably arranged above the combustion chamber (11), and a fan (32) is further arranged on the smoke exhaust box (31).

2. The heat exchanger having a dust filtering structure according to claim 1, characterized in that: The mounting frame (21) is arranged in a detachable structure, the second filter screen comprises a filter layer (22) and an adsorption layer (23), and the filter layer (22) is located below the adsorption layer (23).

3. The heat exchanger having a dust filtering structure according to claim 1, characterized in that: The first filter screen (12) is clamped in the smoke exhaust box (31), a connecting groove (14) is formed on one side of the smoke exhaust box (31), and one end of the first filter screen (12) is clamped in the connecting groove (14); a through groove is formed on the smoke exhaust box (31), and the smoke exhaust box (31) penetrates the fan (32) through the through groove.

4. The heat exchanger having a dust filtering structure according to claim 3, characterized in that: A smoke exhaust pipe (33) is arranged on the top of the fan (32), a smoke exhaust cover plate (34) is detachably arranged on the top of the smoke exhaust pipe (33), a smoke exhaust cavity is formed, a plurality of smoke exhaust grooves are formed on the smoke exhaust cover plate (34), an adsorption block (35) is arranged above the fan (32), the adsorption block (35) is a porous structure, and the adsorption block (35) is clamped in the smoke exhaust cavity.

5. The heat exchanger having a dust filtering structure according to claim 1, characterized in that: The heat exchanger comprises two groups of end cover plates (41), a plurality of first through holes are formed in the two groups of end cover plates (41) correspondingly, a plurality of heat exchange pipes (42) are arranged between the two groups of end cover plates (41), and the two ends of the heat exchange pipes (42) are respectively penetrated into the first through holes in the two groups of end cover plates (41); second through holes are formed in the two sides of the combustion chamber (11) correspondingly to the heat exchange pipes (42), the two ends of the heat exchange pipes (42) are respectively penetrated into the second through holes, and the two groups of heat exchange pipes (42) are connected through bent pipes.

6. The heat exchanger having a dust filtering structure according to claim 5, characterized in that: A water inlet pipe (43) and a water outlet pipe (44) are arranged on one side of the combustion chamber (11), the water outlet pipe (44) is arranged in a bent and wound manner and is sleeved on the combustion chamber (11), and the two groups of heat exchange pipes (42) are connected with the water inlet pipe (43) and the water outlet pipe (44) respectively.

7. The heat exchanger having a dust filtering structure according to claim 6, characterized in that: A plurality of fins (36) are arranged between the two groups of end cover plates (41), a plurality of connecting through holes are formed in the fins (36), the fins (36) are sleeved on the heat exchange pipes (42) through the connecting through holes, the fins (36) are arranged in an arc shape, and a high-temperature-resistant coating is further applied to the fins (36).

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