Air filtering structure easy to disassemble and wash for fully premixed gas product

Abstract

The utility model discloses an air filtering structure easy to disassemble and wash for a fully premixed gas product, which belongs to the technical field of gas heating and comprises a shell and a fully premixed burner arranged in the shell, the shell is provided with a shell opening and a filter screen disassembly and assembly opening, an air filtering box is hermetically fixed on the shell opening, and the filter screen disassembly and assembly opening is communicated with the air filtering box. A filter air outlet and an air filter screen are arranged on the air filter box, the filter air outlet is communicated with the full-premixing burner, and the air filter screen is assembled and disassembled on the air filter box through a filter screen disassembling and assembling opening. The air filter screen of the structure can filter air entering the full-premixing burner and can also be disassembled and assembled on the air filter box through the filter screen disassembling and assembling opening, so that a user can conveniently disassemble and clean the air filter screen without disassembling the burner, the purpose that the user can disassemble and clean the air filter screen by himself / herself is achieved, and the user experience is improved. Therefore, the dependence of a user on professional after-sales personnel when the air filter screen is disassembled and assembled is reduced, and the use convenience and experience of the user are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas heating, in particular to an easily disassembled and cleaned air filtering structure for a full premixed gas product. Background Art

[0002] Fully premixed gas products have very high requirements for the ratio of air and gas. The high-temperature flue gas flow duct of the heat exchanger is very small. If there are more particulate matter in the air and gas, it is easy to block the high-temperature flue gas flow duct of the heat exchanger, resulting in poor flow of high-temperature flue gas, changing the ratio of air and gas, resulting in reduced heat exchange efficiency, increased exhaust temperature, and cold water temperature, affecting the normal use of users. When the high-temperature flue gas flow duct is severely blocked, it will also damage the heat exchanger and its related components.

[0003] To this end, relevant technicians have conducted research and development, and installed air filters on fully premixed gas products, such as a fully premixed gas heating hot water boiler disclosed in the utility model patent with Chinese patent number CN201720006126.9, and a high-power fully premixed condensing furnace and its heating system disclosed in the utility model patent with Chinese patent number CN202322534159.9. However, the air filter is installed inside the product, which is difficult for users to maintain, and professionals need to come to disassemble the machine to clean the air filter. Therefore, further improvement is necessary. Utility Model Content

[0004] The utility model aims to provide an easily disassembled and cleaned air filtering structure for a full premixed fuel gas product, so as to overcome the deficiencies in the prior art.

[0005] An easily disassembled and washable air filter structure for a fully premixed gas product designed for this purpose comprises a shell, and a fully premixed burner arranged in the shell, the shell being provided with a shell opening and a filter disassembly port, an air filter box being sealed and fixed on the shell opening, the air filter box being provided with a filter outlet and an air filter, the filter outlet being communicated with the fully premixed burner, and the air filter being disassembled and assembled on the air filter box through the filter disassembly port.

[0006] The shell opening and the filter screen disassembly and assembly port are arranged adjacent to each other and are respectively opened at the top, side or bottom of the shell.

[0007] The filter assembly and disassembly port is provided with a filter pressing plate, the filter pressing plate is detached and assembled on the filter assembly and disassembly port, and is positioned and pressed on the air filter during assembly.

[0008] The filter screen pressing plate is assembled and disassembled on the filter screen disassembly port by means of fasteners, snap-on connection, or magnetic attraction.

[0009] The air filter is laterally placed between the filter air outlet and the shell opening, and is assembled and disassembled on the air filter box by fasteners, snap-fitting, or magnetic attraction.

[0010] The shell opening is opened at the top of the shell, the top of the air filter box is open and sealed with the top of the shell, and the filter air outlet is opened at the side of the air filter box and is connected to the shell opening through the air filter.

[0011] The top of the air filter box is provided with an annular groove, and a sealing member is provided on the annular groove, and the annular groove is sealed and matched with the top of the shell through the sealing member.

[0012] The filter disassembly and assembly port is opened at the top of the shell and is located on one side of the shell opening. A card slot is provided on the air filter box. The card slot is located in front of the filter outlet and corresponds to the filter disassembly and assembly port. The air filter is disassembled and assembled on the card slot through the filter disassembly and assembly port.

[0013] The filter air outlet is connected to a connecting pipe, an adapter is connected to the connecting pipe, and a premixer is connected through the adapter. The premixer is respectively connected to a fan and a gas proportional valve. The fan outlet of the fan is interconnected with the air inlet of the full premix burner, and the gas proportional valve is interconnected with the gas supply end.

[0014] The air filter box is also provided with an air outlet, and an upper air outlet connecting column and a lower air outlet connecting column are respectively extended from the upper and lower positions of the air outlet, and the lower air outlet connecting column is interconnected with the exhaust port of the full premix burner, and the upper air outlet connecting column extends toward the direction of the outer shell opening, and its size is smaller than the size of the outer shell opening, and a socket is also provided on the upper air outlet connecting column.

[0015] Through the improvement of the above structure, the utility model utilizes the filter outlet to communicate with the full premix burner, so that the external air enters the air filter box through the shell opening and can be filtered through the air filter before entering the full premix burner to filter the air entering the full premix burner, thereby effectively reducing the problem of the air containing more particulate matter affecting the mixing ratio with the gas, and the air filter can be disassembled and installed on the air filter box through the filter disassembly port, so that the user can easily remove and clean the air filter without disassembling the machine, so as to achieve the purpose of the user being able to disassemble and clean the air filter by themselves, thereby reducing the user's dependence on professional after-sales personnel when disassembling the air filter, and improving the user's convenience and experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the assembly structure of an embodiment of the utility model.

[0017] Figure 2 Schematic diagram of the air filter removal structure.

[0018] Figure 3 The figure is a schematic diagram of the exploded structure of an embodiment of the utility model.

[0019] Figure 4 This is a schematic diagram of the exploded structure from another perspective of an embodiment of the utility model.

[0020] Figure 5 It is a schematic diagram of the exploded structure of the air filter box, air filter, filter pressure plate, seal, and socket. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] See also Figure 1-Figure 5 The easily disassembled and washable air filtering structure of the fully premixed gas product comprises a shell 1 and a fully premixed burner 2 arranged in the shell 1. The shell 1 is provided with a shell opening 3 and a filter disassembly opening 4. An air filter box 5 is sealed and fixed on the shell opening 3. The air filter box 5 is provided with a filter outlet 6 and an air filter 7. The filter outlet 6 is communicated with the fully premixed burner 2. The air filter 7 is disassembled and assembled on the air filter box 5 through the filter disassembly opening 4.

[0024] In this embodiment, the air filter box 5 is interconnected with the full premix burner 2 via the filter outlet 6, so that the external air can enter the air filter box 5 through the shell opening 3 and then be filtered through the air filter 7, and then enter the full premix burner 2, so as to filter the air entering the full premix burner 2, thereby effectively reducing the problem of the air containing more particulate matter affecting the mixing ratio with the gas, and the air filter 7 can be disassembled and installed on the air filter box 5 through the filter disassembly port 4, so that the user can easily remove and clean the air filter 7 without disassembling the machine, so as to achieve the purpose of the user being able to disassemble and clean the air filter 7 by himself, thereby reducing the user's dependence on professional after-sales personnel when disassembling the air filter 7, and improving the user's convenience and experience.

[0025] The fully premixed gas product of this embodiment may be a gas water heater or a wall-mounted boiler. The air entering the gas water heater or the wall-mounted boiler must be filtered through the air filter 7 to filter the particulate matter in the air.

[0026] The shell opening 3 and the filter disassembly opening 4 are arranged adjacent to each other and are respectively opened at the top, side or bottom of the shell 1, so that air can enter the air filter box 5 from any position of the shell 1, and the user can also disassemble and assemble the air filter 7 at any position of the product.

[0027] A filter pressing plate 8 is provided on the filter disassembly and assembly port 4. The filter pressing plate 8 is disassembled and assembled on the filter disassembly and assembly port 4, and is positioned and pressed on the air filter 7 during assembly. The air filter 7 is positioned and pressed by the filter pressing plate 8, thereby improving the assembly stability of the air filter 7.

[0028] The filter screen pressing plate 8 is assembled and disassembled on the filter screen assembly and disassembly opening 4 by means of fasteners, snap-fitting, or magnetic attraction.

[0029] In this embodiment, the filter pressing plate 8 is external and is disassembled and assembled on the filter disassembly and assembly port 4 by fasteners. When the user needs to disassemble and clean the air filter 7, there is no need for professional after-sales personnel to come to the site, nor is there any need to disassemble the machine. The user only needs to remove the external filter pressing plate 8 to remove the air filter 7 by himself. After cleaning the air filter 7, it can be installed on the air filter box 5, and then the filter pressing plate 8 can be fixed with fasteners. The whole operation process is quick and convenient.

[0030] The air filter 7 is placed horizontally between the filter outlet 6 and the shell opening 3, and is assembled and disassembled on the air filter box 5 by fasteners, snap-fitting, or magnetic attraction. This not only effectively increases the effective area of ​​the air filter 7, but also facilitates the assembly and disassembly of the air filter 7.

[0031] The housing opening 3 is opened at the top of the housing 1 , the top of the air filter box 5 is open and sealed with the top of the housing 1 , the filter outlet 6 is opened at the side of the air filter box 5 and is connected to the housing opening 3 through the air filter 7 .

[0032] An annular groove 9 is provided on the top of the air filter box 5, and a seal 10 is provided on the annular groove 9, and the seal 10 is sealed with the top of the outer shell 1. The setting of the annular groove 9 can effectively position the seal 10 to effectively ensure the sealing between the air filter box 5 and the top of the outer shell 1.

[0033] In this embodiment, the air filter box 5 is arranged at the upper end of the product. The air filter box 5 is square or round as a whole. The top of the air filter box 5 is sealed with the sheet metal on the upper end of the outer shell 1 through a seal 10, so that the air filter box 5 forms a closed cavity, ensuring that the air can only enter the full premix burner 2 through the air filter 7 and the filter outlet 6 along the designated channel, thereby preventing the air from flowing freely.

[0034] The filter disassembly port 4 is opened at the top of the shell 1 and is located on one side of the shell opening 3. A card slot 11 is provided on the air filter box 5. The card slot 11 is located in front of the filter outlet 6 and corresponds to the filter disassembly port 4. The air filter 7 is disassembled and assembled on the card slot 11 through the filter disassembly port 4.

[0035] In this embodiment, the air filter 7 is disassembled and assembled using the card slot 11, so as to achieve the purpose of convenient disassembly and assembly without the need for tools, thereby improving the user experience.

[0036] A connecting pipe 12 is connected to the filter air outlet 6, an adapter 13 is connected to the connecting pipe 12, and a premixer 14 is connected through the adapter 13. The premixer 14 is respectively connected to a fan 15 and a gas proportional valve 16. The fan outlet of the fan 15 is interconnected with the air inlet of the full premix burner 2, and the gas proportional valve 16 is interconnected with the gas supply end.

[0037] In this embodiment, one end of the connecting pipe 12 is sealed and connected to the filter air outlet 6, and the other end is sealed and connected to the adapter 13. The adapter 13 is sealed and clamped in the premixer 14 by the cooperation of the buckle and the sealing element. The premixer 14 is then sealed and connected with the fan 15 and the gas proportional valve 16 respectively, so that an effective sealing cooperation is formed between the air filter box 5, the premixer 14, the fan 15, and the gas proportional valve 16. At the same time, the air filter 7 is used to filter the air entering the premixer 14, thereby effectively reducing the problem of blockage between the components due to the presence of air particles, thereby reducing the operating noise of the fan 15, and greatly reducing the probability of resonance and abnormal noise, which is conducive to the stable operation of the product on the market.

[0038] An air outlet is also provided on the air filter box 5, and an upper air outlet connecting column 17 and a lower air outlet connecting column 18 are respectively extended from the upper and lower positions of the air outlet. The lower air outlet connecting column 18 is interconnected with the exhaust port of the full premix burner 2. The upper air outlet connecting column 17 extends in the direction of the outer shell opening 3, and its size is smaller than the size of the outer shell opening 3. A socket 19 is also provided on the upper air outlet connecting column 17, and the socket 19 can facilitate the connection between the external exhaust pipe and the exhaust port of the full premix burner 2.

[0039] In this embodiment, the air intake of the product and the exhaust during combustion are both carried out at its top. The gas generated by the full premix burner 2 during operation can be discharged to the external exhaust pipe through its exhaust port, the lower air outlet connecting column 18, and the upper air outlet connecting column 17. At the same time, since the size of the outer shell opening 3 is larger than the size of the upper air outlet connecting column 17, the air can enter the air filter box 5 from the outer shell opening 3.

[0040] The above is a preferred embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected, and the scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An easily disassembled and washable air filter structure for a fully premixed gas product, comprising a housing (1) and a fully premixed burner (2) arranged in the housing (1), characterized in that: The housing (1) is provided with a housing opening (3) and a filter disassembly opening (4); an air filter box (5) is sealed and fixed on the housing opening (3); the air filter box (5) is provided with a filter outlet (6) and an air filter (7); the filter outlet (6) is communicated with the full premix burner (2); and the air filter (7) is disassembled from the air filter box (5) through the filter disassembly opening (4).

2. The easily disassembled and washable air filter structure for full premixed gas products according to claim 1 is characterized in that: The shell opening (3) and the filter screen disassembly opening (4) are arranged adjacent to each other and are respectively opened on the top, side or bottom of the shell (1).

3. The easily disassembled and washable air filter structure for full premixed gas products according to claim 1 is characterized in that: A filter pressing plate (8) is provided on the filter assembly and disassembly opening (4); the filter pressing plate (8) is detached from the filter assembly and disassembly opening (4) and is positioned and pressed onto the air filter (7) during assembly.

4. The easily disassembled and washable air filter structure for full premixed gas products according to claim 3 is characterized by: The filter screen pressing plate (8) is assembled and disassembled on the filter screen assembly and disassembly opening (4) by means of fasteners, snap-fitting, or magnetic attraction.

5. The easily disassembled and washable air filter structure for full premixed gas products according to claim 1 is characterized in that: The air filter (7) is placed transversely between the filter air outlet (6) and the housing opening (3), and is assembled and disassembled on the air filter box (5) by means of fasteners, snap-fitting, or magnetic attraction.

6. The easily disassembled and washable air filter structure for full premixed gas products according to claim 1, characterized in that: The housing opening (3) is provided at the top of the housing (1); the top of the air filter box (5) is open and is in sealing engagement with the top of the housing (1); the filter air outlet (6) is provided at the side of the air filter box (5) and is in communication with the housing opening (3) via the air filter (7).

7. The easily disassembled and washable air filter structure for full premixed gas products according to claim 6, characterized in that: The top of the air filter box (5) is provided with an annular groove (9), a sealing member (10) is provided on the annular groove (9), and the sealing member (10) is used to seal the annular groove (9) with the top of the housing (1).

8. The easily disassembled and washable air filter structure for full premixed gas products according to claim 6, characterized in that: The filter assembly and disassembly opening (4) is provided at the top of the housing (1) and is located on one side of the housing opening (3); a card slot (11) is provided on the air filter box (5); the card slot (11) is located in front of the filter air outlet (6) and corresponds to the filter assembly and disassembly opening (4); the air filter (7) is assembled and disassembled on the card slot (11) through the filter assembly and disassembly opening (4).

9. The easily disassembled and washable air filter structure for full premixed gas products according to claim 1, characterized in that: The filter air outlet (6) is connected to a connecting pipe (12), the connecting pipe (12) is connected to an adapter (13), and is connected to a premixer (14) through the adapter (13), the premixer (14) is respectively connected to a fan (15) and a gas proportional valve (16), the fan outlet of the fan (15) is connected to an air inlet of the full premix burner (2), and the gas proportional valve (16) is connected to a gas supply end.

10. The easily disassembled and cleaned air filter structure for full premixed gas products according to claim 1, characterized in that: The air filter box (5) is also provided with an air outlet, and an upper air outlet connecting column (17) and a lower air outlet connecting column (18) are respectively extended from the upper and lower positions of the air outlet, and the lower air outlet connecting column (18) is communicated with the exhaust port of the full premix burner (2). The upper air outlet connecting column (17) extends in the direction of the housing opening (3) and has a size smaller than that of the housing opening (3). A sleeve (19) is also provided on the upper air outlet connecting column (17).

Images