External filtering device of air heater

Abstract

The utility model relates to the technical field of air heaters for vehicles, in particular to an external filtering device of an air heater, which comprises a filter cartridge, a first connecting cartridge and a second connecting cartridge which are communicated with one another, and the first connecting cartridge and the second connecting cartridge are respectively positioned at two opposite ends of the filter cartridge; the first connecting cylinder and the second connecting cylinder are used for being connected with an air heater body and a ventilation pipeline respectively, an inserting opening is formed in the filter cylinder, a plate-shaped filter assembly is detachably inserted into the inserting opening, the part, located in the filter cylinder, of the plate-shaped filter assembly covers the cross section of the filter cylinder, and the other part of the plate-shaped filter assembly extends out of the filter cylinder. According to the external filtering device of the air heater, only the plate-shaped filtering assembly needs to be pulled out from the inserting opening forcibly, the plate-shaped filtering assembly can be taken out conveniently to be cleaned and replaced, the clean plate-shaped filtering assembly can be inserted into the filtering cylinder from the inserting opening subsequently, the good filtering effect is ensured, and operation is more convenient.

Description

Technical Field

[0001] This application relates to the field of automotive air heater technology, and in particular to an external filter device for an air heater. Background Technology

[0002] Automotive heaters are mainly used to preheat engines in winter and to heat the cabs of trucks or passenger cars. They are mainly divided into liquid heaters and air heaters. Air heaters are ignited by a small amount of oil and a momentary power supply. The heat generated during combustion heats the intake air before it is delivered to achieve the purpose of heating.

[0003] A search revealed that Chinese Patent Application No. 202221520058.5 discloses a vehicle heater that is easy to disassemble and repair. The heater includes a housing, an aluminum sleeve fixedly connected inside the housing, a combustion chamber inside the aluminum sleeve, an igniter fixedly connected to one side of the combustion chamber surface, a circuit board fixedly connected to the upper surface inside the housing, and the igniter electrically connected to the circuit board via wires. An oil pipe and a gas pipe are respectively connected to one side of the combustion chamber surface. Two connecting sleeves are rotatably connected to one side of the housing surface via bearings. The outer casing is connected to oil and gas pipes. One end of the outer casing is connected to a connecting box. The surface of the connecting box is provided with a connecting mechanism. The connecting mechanism includes an air outlet. A spring is fixedly connected inside the air outlet through a groove. The other end of the spring is fixedly connected to a locking block. The other end of the outer casing is provided with an air inlet box. A fan is provided inside the air inlet box. A filter mechanism is provided at the end of the air inlet box away from the outer casing. The filter mechanism includes an air inlet. A filter screen is provided inside the air inlet. A fixing cover is threadedly connected to the surface of the air inlet. The fixing cover is snapped into the filter screen.

[0004] Regarding the aforementioned technologies, the inventors believe that the following technical defects exist and require improvement:

[0005] Since the air inlet needs to be connected to the ventilation duct at all times, the air inlet needs to be removed when replacing or cleaning the filter inside the air inlet. If the ventilation duct is in a relatively fixed position or installed in a hidden narrow space, the air inlet is difficult to remove by twisting, which increases the difficulty of replacing or cleaning the filter and makes the operation inconvenient. Utility Model Content

[0006] This application provides an external filter device for an air heater to improve the following technical problems:

[0007] When the ventilation duct is in a fixed location or installed in a hidden, narrow area, the air inlet is difficult to remove by twisting, which increases the difficulty of replacing or cleaning the filter and makes the operation inconvenient.

[0008] The application provides an external filtering device of an air heater.

[0009] The external filtering device of the air heater comprises a filtering cylinder, a first connecting cylinder and a second connecting cylinder which are in communication with each other, the first connecting cylinder and the second connecting cylinder are respectively located at opposite ends of the filtering cylinder, the first connecting cylinder and the second connecting cylinder are respectively used for connecting an air heater body and an air duct, a plug-in interface is arranged on the filtering cylinder, a plate-shaped filtering assembly is detachably plugged into the plug-in interface, a part of the plate-shaped filtering assembly located in the filtering cylinder covers a cross section of the filtering cylinder, and the other part of the plate-shaped filtering assembly extends out of the filtering cylinder.

[0010] In an implementable technical scheme of the application, the plate-shaped filtering assembly comprises a plug-in plate, a first filtering plate, a second filtering plate and a filtering cloth, the first filtering plate and the second filtering plate are connected to the same side of the plug-in plate, the first filtering plate and the second filtering plate are arranged in parallel and spaced apart and a clamping groove is formed between the first filtering plate and the second filtering plate, and the filtering cloth is clamped in the clamping groove.

[0011] In an implementable technical scheme of the application, the first filtering plate and the second filtering plate are both rectangular stainless steel plates, and circular holes are arranged in an array on the first filtering plate and the second filtering plate.

[0012] In an implementable technical scheme of the application, a sealing rubber ring is sleeved on an outer surface of the plug-in plate, and the sealing rubber ring is sealingly connected with an inner side wall of the plug-in interface.

[0013] In an implementable technical scheme of the application, a handle is arranged on a side of the plug-in plate away from the filtering cloth.

[0014] In an implementable technical scheme of the application, the filtering cylinder is a cuboid structure, the first connecting cylinder comprises a first cylinder and a first connecting part, the first connecting part is connected between the first cylinder and one side of the filtering cylinder, the second connecting cylinder comprises a second cylinder and a second connecting part, and the second connecting part is connected between the second cylinder and the other side of the filtering cylinder.

[0015] In an implementable technical scheme of the application, an external thread is arranged on an outer peripheral wall of the first cylinder and the second cylinder.

[0016] In an implementable technical scheme of the application, the filtering cylinder, the first connecting cylinder and the second connecting cylinder are integrally formed and are stainless steel parts, cast iron parts or aluminum alloy parts.

[0017] In summary, the application has at least one of the following beneficial technical effects:

[0018] When the plate-shaped filter assembly needs to be replaced or cleaned, the first connecting cylinder and the second connecting cylinder do not need to be disassembled, the original mounting position and connection mode of the first connecting cylinder and the second connecting cylinder can be maintained, the plate-shaped filter assembly only needs to be pulled out from the plug-in interface with force, the plate-shaped filter assembly is convenient to take out, clean and replace, a clean plate-shaped filter assembly can be inserted into the filter cylinder from the plug-in interface, and better filtering effect is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 is a structural schematic diagram of an external filtering device of an air heater in the embodiments of the present application.

[0021] Figure 2 is a front structure schematic diagram of a plate-shaped filter assembly in the embodiments of the present application.

[0022] Figure 3 is a side structure schematic diagram of a plate-shaped filter assembly in the embodiments of the present application.

[0023] Explanation of reference signs:

[0024] 1, filter cylinder; 11, plug-in interface;

[0025] 2, first connecting cylinder; 21, first cylinder; 22, first connecting part;

[0026] 3, second connecting cylinder; 31, second cylinder; 32, second connecting part;

[0027] 4, plate-shaped filter assembly; 41, plug-in plate; 42, first filter plate; 43, second filter plate; 44, filter cloth; 45, sealing rubber ring; 46, handle. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects of the present application more clearly understood, the present application will be further described in detail in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0029] It should be noted that when an element is referred to as being "fixed" or "set" on another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0031] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0032] The following will be described in detail below in combination with the accompanying drawings Figures 1-3 The present application is further described in detail.

[0033] The embodiments of the present application disclose an external filtering device of an air heater. Referring to Figure 1 The external filtering device of the air heater comprises a filtering cylinder 1, a first connecting cylinder 2 and a second connecting cylinder 3 which are in communication with each other, the first connecting cylinder 2 and the second connecting cylinder 3 are respectively located at opposite ends of the filtering cylinder 1, the first connecting cylinder 2 and the second connecting cylinder 3 are respectively used for connecting an air heater body and an air duct, the filtering cylinder 1 is provided with a plug-in interface 11, a plate-shaped filtering assembly 4 is detachably plugged into the plug-in interface 11, the part of the plate-shaped filtering assembly 4 located in the filtering cylinder 1 covers the cross section of the filtering cylinder 1, and the other part of the plate-shaped filtering assembly 4 extends out of the filtering cylinder 1.

[0034] The filtering cylinder 1 is a cuboid structure, the first connecting cylinder 2 comprises a first cylinder 21 and a first connecting part 22, the first connecting part 22 is connected between the first cylinder 21 and one side of the filtering cylinder 1, and the second connecting cylinder 3 comprises a second cylinder 31 and a second connecting part 32, the second connecting part 32 is connected between the second cylinder 31 and the other side of the filtering cylinder 1.

[0035] In order to facilitate the first cylinder 21 and the second cylinder 31 and the air heater body, the air duct connection and fixation, the outer circumferential wall of the first cylinder 21 and the second cylinder 31 is provided with an assembled external thread, in order to improve the structural firmness of the device, the filter cartridge 1, the first connecting cylinder 2 and the second connecting cylinder 3 are integrally formed and are stainless steel parts or cast iron parts or aluminum alloy parts.

[0036] Please refer to Figure 2 and Figure 3 In the embodiment, the plate-shaped filter assembly 4 includes a plug-in plate 41, a first filter plate 42, a second filter plate 43 and a filter cloth 44, the first filter plate 42 and the second filter plate 43 are connected to the same side of the plug-in plate 41, the first filter plate 42 and the second filter plate 43 are arranged in parallel and spaced apart and form a clamping groove, and the filter cloth 44 is clamped in the clamping groove.

[0037] The first filter plate 42 and the second filter plate 43 are both rectangular stainless steel plates, and the first filter plate 42 and the second filter plate 43 are both arrayed with round holes, and the outer surface of the plug-in plate 41 is sleeved with a sealing rubber ring 45 (the outer surface of the plug-in plate 41 is provided with an annular clamping groove, and the sealing rubber ring 45 is sleeved in the annular clamping groove), the sealing rubber ring 45 is sealingly connected between the inner side wall of the plug-in port 11, and the side of the plug-in plate 41 away from the filter cloth 44 is provided with a handle 46.

[0038] The plate-shaped filter assembly 4 designed above is simple and firm in structure, convenient to disassemble and install, and the sealing rubber ring 45 can also improve the sealing performance after the plate-shaped filter assembly 4 is installed and fixed, and the first filter plate 42 and the second filter plate 43 have good protection effect on the filter cloth 44 in the clamping groove, effectively preventing the filter cloth 44 from being damaged and prolonging its service life.

[0039] The beneficial technical effects of the air heater external filtering device of the embodiment are as follows:

[0040] When the plate-shaped filter assembly 4 needs to be replaced or cleaned, the first connecting cylinder 2 and the second connecting cylinder 3 do not need to be disassembled, the original installation position and connection mode of the first connecting cylinder 2 and the second connecting cylinder 3 can be maintained, and the plate-shaped filter assembly 4 can be pulled out from the plug-in port 11, so that the plate-shaped filter assembly 4 can be conveniently taken out for cleaning and replacement, and the clean plate-shaped filter assembly 4 can be inserted into the filter cartridge 1 from the plug-in port 11, so that better filtering effect is ensured and the operation is more convenient.

[0041] The above only describes the preferred embodiments of the application and is not intended to limit the application, and any modifications, equivalent replacements and improvements made within the spirit and principles of the application shall be included in the protection scope of the application.

Claims

1. An air heater external filtration device, characterized by, The utility model provides a filter element, including filter cylinder (1), first connecting cylinder (2) and second connecting cylinder (3), first connecting cylinder (2) and second connecting cylinder (3) are located opposite both ends of filter cylinder (1) respectively, first connecting cylinder (2) and second connecting cylinder (3) are used for connecting air heater body, air pipe respectively, be provided with the plug interface (11) on filter cylinder (1), the detachable plug of plug interface (11) has plate filter assembly (4), the part of plate filter assembly (4) in filter cylinder (1) covers the cross section of filter cylinder (1), and other parts of plate filter assembly (4) are stretched out at the outside of filter cylinder (1).

2. The air heater's external filtration device according to claim 1, characterized in that, Plate filter assembly (4) includes plug-in board (41), first filter board (42), second filter board (43) and filter cloth (44), first filter board (42) and second filter board (43) are connected to the same side of plug-in board (41), first filter board (42) and second filter board (43) are arranged in parallel and are spaced apart and form a clamping groove, and filter cloth (44) is clamped in the clamping groove.

3. The air heater's external filtration device according to claim 2, characterized in that, First filter board (42) and second filter board (43) are both rectangular stainless steel plates, and first filter board (42) and second filter board (43) are both arrayed with round holes.

4. The air heater's external filtration device according to claim 2, characterized in that, The outer surface of the plug-in board (41) is sleeved with a sealing rubber ring (45), and the sealing rubber ring (45) is sealingly connected with the inner side wall of the plug interface (11).

5. The air heater's external filtration device according to claim 2, characterized in that, The side of the plug-in board (41) away from the filter cloth (44) is provided with a handle (46).

6. The air heater's external filtration device according to claim 1, characterized in that, The filter cylinder (1) is a rectangular cuboid structure, the first connecting cylinder (2) includes a first cylinder (21) and a first connecting portion (22), the first connecting portion (22) is connected between the first cylinder (21) and one side of the filter cylinder (1), the second connecting cylinder (3) includes a second cylinder (31) and a second connecting portion (32), the second connecting portion (32) is connected between the second cylinder (31) and the other side of the filter cylinder (1).

7. The air heater's external filtration device according to claim 6, characterized in that, The outer peripheral wall of the first cylinder (21) and the second cylinder (31) is provided with an external thread.

8. The air heater's external filtration device according to claim 1, characterized in that, The filter cylinder (1), the first connecting cylinder (2) and the second connecting cylinder (3) are integrally formed and are stainless steel parts or cast iron parts or aluminum alloy parts.

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