A modular air heater that is easy to clean

Abstract

The utility model discloses a modularization air heater convenient to clean, including frame, frame is equipped with air inlet, air outlet and heating cavity, be equipped with a plurality of detachable heating module in heating cavity, and heating module includes heating core body, and be equipped with the mounting groove in heating cavity, and heating core body and mounting groove slidingly connected, form the structure of pull -out, the lateral wall of heating cavity still is equipped with a plurality of observation port, and the lateral wall of heating cavity still is equipped with sealing door, and the observation port is opened or sealed through the rotation sealing door. The utility model discloses through detachable heating module, makes heating core body to be extracted and can clean, has improved the cleaning convenience of air heater, can also observe the dust accumulation condition of heating core body through observation port simultaneously, when dust accumulation does not reach the standard that needs to extract heating core body, carries out cleaning to heating core body through observation port, further improved the cleaning convenience of air heater.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchange, specifically relating to a modular air heater that is easy to clean. Background Technology

[0002] Air heaters are commonly used heat exchange devices in the field of heat exchange, and are often used to heat air. However, since air heaters need to be connected to the outside environment in order to heat the air flowing through them, dust will accumulate inside the air heater after a period of use, which will lead to a reduction in heating efficiency.

[0003] In existing technologies, such as patent document CN215638005U, an air heater is disclosed. This heater uses multiple heat exchange tubes that penetrate multiple fins, resulting in a denser internal arrangement of heat exchangers, thereby increasing the heat exchange area and improving the heat exchange efficiency. However, after a certain period of use, dust easily accumulates on the surfaces of the heat exchange tubes and fins, reducing heat exchange efficiency and potentially causing blockage. Summary of the Invention

[0004] To address the problems in existing technologies, this utility model proposes a modular air heater that is easy to clean. The detachable heating module allows the heating core to be extracted for cleaning, improving the ease of cleaning the air heater. Simultaneously, the dust accumulation on the heating core can be observed through an observation port. When the dust accumulation does not reach the standard requiring extraction of the heating core, it can be cleaned through the observation port, further enhancing the ease of cleaning the air heater.

[0005] This utility model is implemented as follows: A modular air heater that is easy to clean includes a frame with an air inlet and an air outlet at both ends, forming a hollow heating cavity inside the frame. Multiple heating modules arranged in parallel are located within the heating cavity. Each heating module is detachably installed within the heating cavity and includes a heating core. The heating cavity has a mounting groove adapted to the heating core, which penetrates the side wall of the heating cavity to form a mounting opening. The mounting opening connects the mounting groove to the outside. The heating core is slidably connected to the mounting groove, forming a pull-out structure. When the heating core needs cleaning, it can be pulled out of the heating cavity, exposing it to the outside environment, thus improving the ease of cleaning the heating core.

[0006] The heating chamber's sidewall is also equipped with multiple observation ports, evenly distributed between every two heating modules. The outer sidewall of the heating chamber also features a sealing door corresponding to each observation port, hinged to one side of the observation port, which can be opened or closed by rotation. These observation ports serve two purposes: firstly, to periodically observe the condition of the heating core, making the heating core inside the heating chamber visible; secondly, when the heating core is not yet dirty enough to require removal for cleaning, a water gun or other spray-type cleaning tool can be inserted through the observation port into the heating chamber to clean the heating core, further improving the ease of cleaning the heating core.

[0007] Preferably, the mounting groove includes baffles at the top and bottom of the heating cavity. The baffles are L-shaped, with two baffles at each of the top and bottom of the heating cavity, symmetrically arranged on both sides of the heating core. The baffles create a hollow center in the mounting groove. When the heating core is installed in the mounting groove, only the top and bottom of the heating core are connected to the mounting groove, thereby increasing the area of ​​the heating core exposed within the heating cavity and improving the heating efficiency of the heating core.

[0008] Preferably, the heating core includes a reciprocatingly meandering heating tube, which comprises multiple straight tube segments arranged in parallel and connecting elbows connecting adjacent straight tube segments, with gaps between adjacent straight tube segments. Heat exchange fins are provided on the outer periphery of each straight tube segment, extending around it along the extension direction of the straight tube segment, or multiple heat exchange fins are arranged in parallel along the extension direction of the straight tube segment. The reciprocatingly meandering heating tube increases the heating area of ​​the heating tube within the heating cavity, improving the heating efficiency of the heating core; the heat exchange fins further increase the heat exchange area of ​​the straight tube segments, further improving the heating efficiency of the heating core.

[0009] Preferably, the heating module further includes a sealing cap installed on the mounting port, the sealing cap covering the mounting port; the inlet and outlet ends of the heating core protrude through the sealing cap, so that the inlet and outlet ends of the heating core are exposed on the side wall of the heating cavity. The sealing cap is used to seal the mounting port after the heating core is installed in the mounting groove, to prevent leakage from the mounting port, and to improve the reliability of the heating cavity.

[0010] Specifically, the inner side of the sealing cover is also provided with a first sealing gasket, and the edge of the mounting opening is folded outward and extended to form a first sealing part that matches the first sealing gasket. When the sealing cover is installed on the mounting opening, the first sealing gasket is sandwiched between the sealing cover and the first sealing part. The first sealing gasket further improves the sealing performance between the sealing cover and the first sealing part, thereby improving the sealing line of the sealing cover.

[0011] The inner side of the sealed door is provided with a second sealing gasket. The edge of the observation port is folded outward and extended to form a second sealing part. When the sealed door is closed, the second sealing gasket is pressed against the sealed door and the second sealing part. The second sealing gasket is used to further improve the sealing performance of the sealed door when it is closed, thereby improving the reliability of the sealed door.

[0012] Preferably, the sealing door is further provided with a latch on the other side of the hinge axis. When the sealing door is closed, the latch simultaneously connects the observation port and the sealing door. When the heating chamber heats the air, the air expands due to heat, creating a thrust on the sealing door. The latch is used to secure the closed sealing door, preventing it from accidentally opening under the thrust generated by the air expansion, thus improving the reliability of the sealing door.

[0013] Specifically, both the inlet and outlet ends of the heating core are equipped with connecting flanges. The heating core contains a flowing heat medium, and the connecting flanges increase the connection area when the heating core is connected to the heat medium supply device, making the connection between the heating core and the heat medium supply device more reliable.

[0014] Preferably, a protective net is provided at the air inlet, which completely covers the air inlet. The protective net can prevent foreign objects from entering the heating chamber and damaging the heating core, thereby improving the safety of the heating chamber.

[0015] Preferably, the heating module has three heating modules. The heating medium of the heating module near the air inlet and the heating module in the middle is hot water, and the heating medium of the heating module near the air outlet is high-temperature steam.

[0016] Preferably, the top of the frame is also provided with a fire extinguishing port, which connects the heating chamber to the outside environment / fire extinguishing device. The fire extinguishing port is used to extinguish a fire in the event of an accidental fire in the heating chamber, thereby improving the safety of the heating chamber.

[0017] The beneficial effects of this utility model are:

[0018] This invention features a detachable heating module, allowing the heating core to be extracted for cleaning, thus improving the ease of cleaning the air heater. Simultaneously, the dust accumulation on the heating core can be observed through an observation port. When the dust accumulation does not reach the standard requiring extraction of the heating core, it can be cleaned through the observation port, further enhancing the ease of cleaning the air heater. Attached Figure Description

[0019] Figure 1 This is a front view of the air heater of this utility model;

[0020] Figure 2 This is a top view of the air heater of this utility model;

[0021] Figure 3 for Figure 2 An enlarged schematic diagram of point a;

[0022] Figure 4 for Figure 2 An enlarged schematic diagram of point b;

[0023] Figure 5 This is a top view of the frame of the air heater of this utility model;

[0024] Figure 6 This is a schematic diagram of the heating element of the air heater of this utility model;

[0025] Figure 7 This is a schematic diagram of the straight pipe section of the air heater of this utility model.

[0026] Figure label:

[0027] 1. Frame; 2. Heating module; 3. Protective net; 11. Heating chamber; 12. Mounting slot; 13. Mounting port; 14. Observation port; 15. Sealing door; 16. Fire extinguishing port; 17. Second sealing gasket; 18. Lock; 21. Heating core; 22. Sealing cover; 23. First sealing gasket; 121. Baffle; 131. First sealing part; 211. Straight pipe section; 212. Heat exchange fins; 213. Connecting elbow; 214. Connecting flange. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figures 1-7As shown, a modular air heater that is easy to clean includes a frame 1, with an air inlet and an air outlet at both ends of the frame 1, forming a hollow heating chamber 11 inside the frame 1.

[0030] In this embodiment, a protective net 3 is provided at the air inlet, which completely covers the air inlet. The protective net 3 can prevent foreign objects from entering the heating chamber 11 and damaging the heating core 21, thereby improving the safety of the heating chamber 11.

[0031] In this embodiment, the top of the frame 1 is also provided with a fire extinguishing port 16, which connects the heating chamber 11 and the fire extinguishing device. The fire extinguishing port 16 is used to extinguish a fire in the event of an accidental fire in the heating chamber 11, thereby improving the safety of the heating chamber 11.

[0032] The heating chamber 11 is provided with a plurality of heating modules 2 arranged in parallel. The heating modules 2 are detachably installed in the heating chamber 11 and include a heating core 21.

[0033] In this embodiment, there are 3 heating modules 2. The heating medium of the heating module 2 near the air inlet and the heating module 2 located in the middle is hot water, and the heating medium of the heating module 2 near the air outlet is high-temperature steam.

[0034] In this embodiment, the heating core 21 includes a reciprocatingly meandering heating tube. Each heating tube comprises multiple parallel straight pipe sections 211 and connecting elbows 213 connecting adjacent straight pipe sections 211, with gaps between adjacent straight pipe sections 211. Multiple heat exchange fins 212 are provided on the outer periphery of each straight pipe section 211, arranged in parallel along the extending direction of the straight pipe section 211. The reciprocatingly meandering heating tube increases the heating area within the heating cavity 11, improving the heating efficiency of the heating core 21. The heat exchange fins 212 further increase the heat exchange area of ​​the straight pipe sections 211, further improving the heating efficiency of the heating core 21.

[0035] The heating chamber 11 is provided with a mounting groove 12 that is adapted to the heating core 21. The mounting groove 12 penetrates the side wall of the heating chamber 11 to form a mounting opening 13. The mounting opening 13 allows the mounting groove 12 to communicate with the outside. The heating core 21 is slidably connected to the mounting groove 12 to form a pull-out structure. When the heating core 21 needs to be cleaned, the heating core 21 can be pulled out from the heating chamber 11 to expose the heating core 21 to the outside, which improves the convenience of cleaning the heating core 21.

[0036] In this embodiment, the mounting groove 12 includes baffles 121 located at the top and bottom of the heating cavity 11. The baffles 121 are L-shaped, with two baffles 121 at each of the top and bottom of the heating cavity 11, symmetrically arranged on both sides of the heating core 21. The baffles 121 create a hollow center in the mounting groove 12. When the heating core 21 is installed in the mounting groove 12, only the top and bottom of the heating core 21 are connected to the mounting groove 12, thereby increasing the area of ​​the heating core 21 exposed within the heating cavity 11 and improving the heating efficiency of the heating core 21.

[0037] The heating chamber 11 has multiple observation ports 14 evenly distributed between every two heating modules 2 on its side wall. The outer side wall of the heating chamber 11 also has a sealing door 15 corresponding to each observation port 14. The sealing door 15 is hinged to one side of each observation port 14, and can be opened or closed by rotation. The observation ports 14 are used to periodically observe the dirt level of the heating core 21, making the heating core 21 inside the heating chamber 11 visible. Furthermore, when the dirt level of the heating core 21 is not high enough to require removal for cleaning, a water gun or other spray-type cleaning tool can be inserted into the heating chamber 11 through the observation port 14 to clean the heating core 21, further improving the ease of cleaning the heating core 21.

[0038] In this embodiment, the heating module 2 further includes a sealing cover 22 installed on the mounting port 13, the sealing cover 22 covering the mounting port 13; the inlet end and outlet end of the heating core 21 protrude through the sealing cover 22, so that the inlet end and outlet end of the heating core 21 are exposed on the side wall of the heating cavity 11. The sealing cover 22 is used to seal the mounting port 13 after the heating core 21 is installed in the mounting groove 12, so as to prevent leakage from the mounting port 13 and improve the reliability of the heating cavity 11.

[0039] Specifically, the inner side of the sealing cover 22 is also provided with a first sealing gasket 23. The edge of the mounting opening 13 is folded outward and extended to form a first sealing part 131 that is adapted to the first sealing gasket 23. When the sealing cover 22 is installed on the mounting opening 13, the first sealing gasket 23 is sandwiched between the sealing cover 22 and the first sealing part 131. The first sealing gasket 23 further improves the sealing performance between the sealing cover 22 and the first sealing part 131, thereby improving the sealing line of the sealing cover 22.

[0040] The inner side of the sealing door 15 is provided with a second sealing gasket 17. The edge of the observation port 14 is folded outward and extended to form a second sealing part. When the sealing door 15 is closed, the second sealing gasket 17 is pressed against the sealing door 15 and the second sealing part. The second sealing gasket 17 is used to further improve the sealing performance of the sealing door 15 when it is closed, thereby improving the reliability of the sealing door 15.

[0041] In this embodiment, a latch 18 is also provided on the other side of the sealing door 15 opposite to the hinge axis. When the sealing door 15 is closed, the latch 18 simultaneously connects the observation port 14 and the sealing door 15. When the heating chamber 11 heats the air, the air expands due to heat, creating a thrust on the sealing door 15. The latch 18 is used to fix the closed sealing door 15, preventing the sealing door 15 from accidentally opening under the thrust generated by the air expansion, thus improving the reliability of the sealing door 15.

[0042] Specifically, both the inlet and outlet ends of the heating core 21 are provided with connecting flanges 214. The heating core 21 contains a flowing heat medium. The connecting flanges 214 increase the connection area when the heating core 21 is connected to the heat medium supply device, making the connection between the heating core 21 and the heat medium supply device more reliable.

[0043] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A modular air heater that is easy to clean, comprising a frame, wherein an air inlet and an air outlet are respectively provided at both ends of the frame, forming a hollow heating chamber inside the frame, characterized in that: The heating chamber is provided with multiple heating modules arranged in parallel. The heating modules are detachably installed in the heating chamber and include a heating core. The heating chamber is provided with a mounting groove that is adapted to the heating core. The mounting groove penetrates the side wall of the heating chamber to form a mounting opening. The mounting opening allows the mounting groove to communicate with the outside. The heating core is slidably connected to the mounting groove to form a pull-out structure. The side wall of the heating chamber is also provided with multiple observation ports, which are evenly distributed between every two heating modules; the outer side wall of the heating chamber is also provided with a sealing door corresponding to the observation port, which is hinged to one side of the observation port and can be opened or sealed by rotating.

2. The modular air heater that is easy to clean according to claim 1, characterized in that: The mounting groove includes baffles located at the top and bottom of the heating chamber. The baffles are L-shaped, and there are two baffles at the top and bottom of the heating chamber, which are symmetrically arranged on both sides of the heating core.

3. The modular air heater for easy cleaning according to claim 1, characterized in that: The heating core includes a heating tube arranged in a reciprocating meandering manner. The heating tube includes multiple straight pipe sections arranged in parallel and connecting elbows connecting adjacent straight pipe sections. There is a gap between adjacent straight pipe sections. Heat exchange fins are provided on the outer periphery of the straight pipe sections. The heat exchange fins extend around the straight pipe sections along the extension direction of the straight pipe sections, or multiple heat exchange fins are arranged in parallel along the extension direction of the straight pipe sections.

4. The modular air heater that is easy to clean according to claim 1, characterized in that: The heating module also includes a sealing cover installed on the mounting port, the sealing cover covering the mounting port; the inlet end and outlet end of the heating core protrude through the sealing cover, so that the inlet end and outlet end of the heating core are exposed on the side wall of the heating cavity.

5. A modular air heater convenient to clean as claimed in claim 4, wherein: The inner side of the sealing cover is also provided with a first sealing gasket. The edge of the mounting opening is folded outward and extended to form a first sealing part that is adapted to the first sealing gasket. When the sealing cover is installed on the mounting opening, the first sealing gasket is sandwiched between the sealing cover and the first sealing part. The inner side of the sealed door is provided with a second sealing gasket, and the edge of the observation port is folded outward and extended to form a second sealing part. When the sealed door is closed, the second sealing gasket is pressed against the sealed door and the second sealing part.

6. The modular air heater convenient to clean of claim 1, wherein: The sealing door is also provided with a latch on the other side of the hinge axis. When the sealing door is closed, the latch connects the observation port and the sealing door at the same time.

7. A modular air heater that is easy to clean according to claim 4, characterized in that: Both the inlet and outlet ends of the heating core are equipped with connecting flanges.

8. A modular air heater that is easy to clean according to claim 1, characterized in that: A protective net is provided at the air inlet, and the protective net completely covers the air inlet.

9. The modular air heater convenient to clean of claim 1, wherein: The heating module has three heating modules. The heating medium of the heating module near the air inlet and the heating module in the middle is hot water, and the heating medium of the heating module near the air outlet is high-temperature steam.

10. A modular air heater that is easy to clean according to claim 1, characterized in that: The top of the frame is also provided with a fire extinguishing port, which connects the heating chamber to the outside / fire extinguishing device.

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