Anti-fouling cover

Abstract

To provide an anti-fouling cover capable of facilitating cleaning and maintenance work after use by being attached to a hot air heater chiefly used at a construction site or the like and preventing accumulation of dust and adhesive materials.SOLUTION: An anti-fouling cover 1 includes a combustion tube cover 10 mounted on a heater 100 having a combustion tube part 110 having a tubular shape obtained by matching a tube axial direction to a horizontal direction and formed of a flame-retardant material, and cover mounting part 30 for mounting the combustion tube cover 10 on the heater 100, and the combustion tube cover 10 has flexibility deformable along a tube external surface 114 of the combustion tube 110, covers at least a portion of the tube external surface 114 and is formed of a transparent sheet material for making the combustion tube part 110 visible from the outside. Further, the anti-fouling cover 1 includes a fuel tank part cover 20 for covering at least a portion of a tank external surface 121 of a fuel tank part 120 of the heater 100 and is formed of a transparent sheet material for making the fuel tank part 120 visible from the outside.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to an antifouling cover, and more particularly to an antifouling cover that can be attached to a hot air heater used in places where a lot of dust and sticky materials (concrete, paint, adhesives, mud, etc.) are generated, such as construction sites and work sites. [Background technology]

[0002] 2. Description of the Related Art Conventionally, at various work sites such as construction sites and work places, drying work for drying paint after application, hardening work for hardening adhesives used, and work related to preventing concrete from freezing and curing are carried out.

[0003] For these operations, commercial heating equipment such as infrared heaters and hot air heaters are used to blow high-temperature hot air to promote drying and hardening and to prevent the temperature of concrete from dropping after pouring. In particular, hot air heaters that can maintain a large heat output and can blow hot air continuously for long periods of time are widely used at work sites.

[0004] Hot air heaters generally use kerosene as fuel, and use a rotating fan to blow hot air generated by a burner to heat indoor or outdoor spaces such as construction sites. Hot air heaters are a type of construction machinery used for commercial purposes, and may be owned directly by the construction company that actually carries out the work, or may be rented from a rental company that handles hot air heaters and used only during the construction period.

[0005] At construction sites and other work sites where hot air heaters are used, a lot of dust and sticky matter is generated during work, and large amounts of dust and sticky matter can accumulate. Therefore, construction machinery that includes hot air heaters is exposed to the dust and sticky matter. Therefore, after use, a lot of dust and sticky matter can accumulate or adhere to the outer surface of the heater.

[0006] Therefore, after use, it is necessary to remove accumulated or attached dust and sticky substances from hot air heaters. In particular, hot air heaters tend to accumulate dust and have sticky substances attached because they suck in the surrounding air to generate hot air.

[0007] The rental company mentioned above cleans and repairs the hot air heaters returned by customers after use, and then rents them out to other borrowers.

[0008] Therefore, hot air heaters can take a particularly long time to remove dust and sticky substances after use and to maintain them. Also, the amount of dust and sticky substances that accumulate varies depending on the construction site and the conditions of use, and cannot be dealt with by normal cleaning or other such work, so that disassembly and cleaning of the inside of the hot air heater may be required.

[0009] Therefore, the costs for cleaning and maintenance of these heaters are high, or the use of hot air heaters is restricted during maintenance. This sometimes requires the construction company to readjust its construction plan. Meanwhile, for the construction machinery rental company, it may take time to provide the heaters to the next rental company after collection from the rental company, which may result in a decrease in the turnover of hot air heater rentals.

[0010] Therefore, it has been proposed to attach covers to various machines such as hot air heaters and other construction machines in advance in order to prevent dust accumulation, etc. For example, in a kerosene burner unit used to heat the re-burning chamber of an incinerator, a kerosene burner unit is known that is covered with a dust cover in order to protect against dust such as soot and combustion ash inside the incinerator and rainwater (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0011] [Patent Document 1] Japanese Patent Application Publication No. 07-243624 Summary of the Invention [Problem to be solved by the invention]

[0012] However, conventional dust covers may not be able to adequately prevent the accumulation of dust on the hot air heater.

[0013] In view of the above-mentioned situation, the present invention has an objective of providing a dirt-resistant cover that can be attached to hot air heaters that are mainly used at construction sites, etc., prevents the accumulation of dust and sticky substances, and facilitates cleaning and maintenance work after use. [Means for solving the problem]

[0014] According to the present invention, there is provided an antifouling cover as described below.

[0015] [1] A stain-resistant cover to be attached to a hot air heater having a cylindrical combustion tube section with its cylindrical axis direction aligned horizontally, comprising a combustion tube section cover formed of a flame-retardant material and a cover attachment section for attaching the combustion tube section cover to the hot air heater, wherein the combustion tube section cover has flexibility that allows it to deform along the outer surface of the combustion tube section, covers at least a portion of the outer surface of the tube section, and is formed of a transparent sheet material that allows the combustion tube section to be viewed from the outside.

[0016] [2] The hot air heater further has a fuel tank section for storing fuel, and a combustion cylinder section support section that is erected on the upper surface of the fuel tank section and supports the combustion cylinder section from below, and further includes a fuel tank section cover that covers at least a portion of the outer tank surface of the fuel tank section and is formed of a transparent sheet material that allows the fuel tank section to be viewed from the outside.The anti-fouling cover described in [1] further includes a fuel tank section cover that covers at least a portion of the outer tank surface of the fuel tank section and is formed of a transparent sheet material that allows the fuel tank section to be viewed from the outside.

[0017] [3] The anti-fouling cover described in [2], wherein the combustion cylinder cover and the fuel tank cover are formed independently of each other.

[0018] [4] The fuel tank cover has a donut shape with a cutout portion at a position corresponding to the combustion tube support portion, and further has a communication portion that connects a part of the outer periphery of the fuel tank cover and the cutout portion. The anti-fouling cover described in [2] or [3] above.

[0019] [5] The fuel tank cover according to [2] or [3] further includes a first fuel tank cover covering one side of the fuel tank, and a second fuel tank cover that is independent of and separable from the first fuel tank cover and covers the other side of the fuel tank.

[0020] [6] The anti-fouling cover according to [2] or [3], wherein the combustion cylinder cover and the fuel tank cover are formed using a PET resin sheet processed into a sheet shape. Effect of the Invention

[0021] The antifouling cover of the present invention prevents the accumulation and adhesion of dust and sticky substances on the hot air heater, and facilitates cleaning and maintenance work after use. In particular, by replacing the antifouling cover, the hot air heater can be used quickly. In particular, rental companies that handle construction machinery can complete cleaning and maintenance work in a short time, making it possible to efficiently rent out hot air heaters that are available for rental. [Brief description of the drawings]

[0022] [Figure 1] FIG. 4 is a development view showing a schematic configuration of a combustion tube cover that constitutes the antifouling cover. [Diagram 2] FIG. 4 is a development view showing a schematic configuration of a fuel tank cover that constitutes the antifouling cover. [Diagram 3] FIG. 2 is an explanatory diagram showing a schematic configuration of a heater and an example of attachment of an antifouling cover. [Figure 4] FIG. 2 is an explanatory diagram showing a schematic configuration of a heater and an example of attachment of an antifouling cover. [Diagram 5]FIG. 11 is a development view showing another example of the configuration of the fuel tank cover constituting the antifouling cover of the present invention. [Figure 6] FIG. 11 is a development view showing another example of the configuration of the fuel tank cover constituting the antifouling cover of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] The following describes the form of the antifouling cover for carrying out the present invention with reference to the drawings, but the present invention is not limited to the following embodiment. In other words, it should be understood that the scope of the present invention includes any appropriate changes and improvements to the following embodiment based on the ordinary knowledge of a person skilled in the art, provided that the changes and improvements do not deviate from the spirit of the present invention.

[0024] Fig. 1 is an exploded view showing the schematic configuration of a combustion cylinder cover 10 constituting the antifouling cover 1, and Fig. 2 is an exploded view showing the schematic configuration of a fuel tank cover 20 constituting the antifouling cover 1. Figs. 3 and 4 are explanatory views showing the schematic configuration of a heater 100 and an example of mounting the antifouling cover 1.

[0025] The anti-soiling cover 1 of this embodiment is intended to be attached to a hot air heater 100 (hereinafter referred to as "heater 100"). The anti-soiling cover 1 covers at least a portion of the outer surface of the heater 100, thereby preventing the accumulation or adhesion of dust and sticky substances. The anti-soiling cover 1 mainly comprises a combustion tubular portion cover 10 formed of a flame-retardant material, and a cover attachment portion 30 for attaching the combustion tubular portion cover 10 to the heater 100.

[0026] Here, the combustion cylindrical section cover 10 has flexibility that allows it to deform along the cylindrical section outer surface 114 of the combustion cylindrical section 110 of the heater 100, covers at least a portion of the cylindrical section outer surface 114, and is formed of a transparent sheet material that allows the combustion cylindrical section 110 to be viewed from the outside.

[0027] That is, the combustion cylinder cover 10 constituting the antifouling cover 1 of this embodiment is made of a material having "flame retardancy," "flexibility," and "transparency" as its raw material.

[0028] The combustion tube cover 10 constituting the anti-fouling cover 1 has heat resistance that allows it to withstand covering the tube outer surface 114 that becomes hot due to the heat generated by the heater 100, and can be formed by processing a non-flammable flame-retardant material into a sheet shape.

[0029] For example, in the antifouling cover 1 of this embodiment, the combustion cylinder cover 10 is formed from a PET resin sheet as a raw material. The PET resin sheet is a well-known product formed by molding PET resin (polyethylene terephthalate resin) into a flat plate (sheet). It is generally known that the PET resin itself has a continuous heat resistance temperature of 150°C or higher and a heat distortion temperature of 240°C.

[0030] Furthermore, PET resin is known to be a highly crystalline material with excellent transparency, i.e., PET resin sheets have good light transmission properties.

[0031] In addition, the PET resin sheet can be molded into various sheet thicknesses and has sufficient flexibility to be easily deformed under a certain degree of stress. Therefore, it meets all the requirements of "flame retardancy," "flexibility," and "transparency" required for the combustion cylinder cover 10 constituting the antifouling cover 1 of this embodiment, and can be used favorably.

[0032] In addition, polyvinyl chloride resin, polycarbonate resin, polyamide resin, polyvinylidene fluoride resin, polytetrafluoroethylene resin, etc. are known as resins having well-known flame retardancy. Furthermore, many resin materials are known to have flexibility and transparency, so these can be appropriately used in the stain-resistant cover of the present invention.

[0033] The antifouling cover 1 may further include a fuel tank cover 20 in addition to the configuration of the combustion cylinder cover 10 and the cover mounting part 30. The fuel tank cover 20 covers at least a part of the tank outer surface 121 of the fuel tank part 120 constituting the heater 100, and can be formed of a transparent sheet material that allows the fuel tank part 120 to be viewed from the outside.

[0034] That is, the fuel tank cover 20 constituting the antifouling cover 1 of this embodiment is made of a "transparent" material. Note that the fuel tank cover 20 may be made of a "flame retardant" and "flexible" material, similar to the combustion tube cover 10 described above.

[0035] The antifouling cover of the present invention does not necessarily require the above-mentioned fuel tank cover 20. When used at a construction site or the like where dust and sticky substances are less likely to be generated, the fuel tank cover 20 may be omitted.

[0036] In addition, the antifouling cover 1 of this embodiment has been shown to be formed by separately forming the combustion cylinder cover 10 and the fuel tank cover 20, but is not limited to this. For example, the antifouling cover may be formed by integrally forming the combustion cylinder cover 10 and the fuel tank cover 20.

[0037] 1, the combustion cylindrical section cover 10 is in a sheet shape of a predetermined thickness in the unfolded state, and is cut into a substantially rectangular shape so as to be assembled according to the three-dimensional shape of the combustion cylindrical section 110 to be covered. Similarly, the fuel tank section cover 20 is in a sheet shape of a predetermined thickness in the unfolded state, and is cut into a predetermined shape so as to be assembled according to the three-dimensional shape of the fuel tank section 120 to be covered, as shown in FIG.

[0038] The heater 100 mainly comprises a combustion cylinder section 110, a fuel tank section 120, and a combustion cylinder section support section 130. The combustion cylinder section 110 is installed with its cylindrical axis direction coinciding with the horizontal direction. The combustion cylinder section support section 130 is erected on a tank section upper surface 122 of the fuel tank section 120, and supports the combustion cylinder section 110 from below. Here, the cylindrical axis direction corresponds to the direction from the front to the back of the paper in FIG. 3, or the left to right direction of the paper in FIG. 4.

[0039] The combustion tube section 110 is capable of blowing out hot air generated inside a cylindrical tube body 111, and is provided with a hot air outlet 112 at one end in the axial direction of the cylinder (left side of the paper in FIG. 4 ). On the other hand, an outside air intake 113 for taking in outside air for combustion is provided at the other end in the axial direction of the cylinder (right side of the paper in FIG. 4 ).

[0040] The intake of outside air and the exhaust of hot air begin by rotating a fan (not shown) provided inside the tube body 111. This generates an air flow between the outside air intake 113 and the hot air exhaust 112. Furthermore, the combustion tube section 110 adjusts the oxygen-containing outside air (air) taken in from the outside air intake 113 and the fuel (kerosene) supplied from the fuel tank section 120 at a suitable mixture ratio, and combusts them in a burner (not shown) provided inside.

[0041] This generates hot air, and the high-temperature hot air can be blown out from the hot air outlet 112 by the fan.

[0042] 3 and 4, the standard position of the combustion tube section 110 is a position where the cylinder axis direction is aligned with the horizontal direction. However, the combustion tube section 110 is supported from below by the combustion tube section support section 130 and is rotatably supported on a support shaft (not shown). Therefore, the blowing direction of the hot air outlet 112 can be changed by tilting the support shaft as a rotation axis within a range of several tens of degrees in the upward and downward directions.

[0043] That is, it is possible to adjust the angle (blowout angle, discharge angle) of the hot air blown out from the hot air outlet 112 with respect to the horizontal direction. This function makes it possible to blow out hot air to an appropriate range and direction in operations such as drying paint, hardening adhesives, and curing concrete. This improves the efficiency of various operations.

[0044] The fuel tank section 120 constituting the heater 100 has a substantially rectangular parallelepiped shape and can store kerosene therein as fuel for combustion by the burner. The capacity of the fuel tank section 120 is not particularly limited, but can be, for example, about 50 liters. This allows the heater 100 to operate continuously, and can continue to blow out hot air for, for example, a whole day and night.

[0045] The combustion cylinder support portion 130, which has already been described, is provided on the tank portion upper surface 122 of the fuel tank portion 120. Furthermore, a fuel inlet 123 for injecting kerosene into the inside of the fuel tank portion 120 is provided on the tank portion upper surface 122. A substantially disk-shaped fuel cap portion 124 is attached to the upper end of the fuel inlet 123. This allows kerosene to be stored in the internal space of the fuel tank portion 120 in a closed state.

[0046] Further, the heater 100 has, as other components, an axle portion 126 attached to a tank portion underside 125 of the fuel tank portion 120 on the rear side of the heater 100 (the right side of the paper in FIG. 4), and a pair of wheels 127 attached to both ends of the axle portion 126. By employing such a configuration, the heater 100 can be easily moved in the horizontal direction in accordance with the rotation of the wheels 127.

[0047] Furthermore, the heater 100 is provided with an installation surface and support legs 140 that can be installed at a position (left side of the paper in FIG. 4) opposite to the mounting positions of the axle section 126 and the wheel section 127. That is, when the heater 100 is installed at a construction site or the like, the wheel section 127 and the support legs 140 can support the fuel tank section 120 and the combustion tube section 110 supported thereon in a substantially horizontal state. In this case, the tank section lower surface 125 of the fuel tank section 120 is raised above the installation surface. This allows the heater 100 to be installed in a stable state when in use or in storage.

[0048] On the other hand, when the heater 100 moves, the support leg 140 side, in other words, the hot air outlet 112 side of the combustion tube part 110 is slightly raised, and the support leg 140 is separated from the installation surface. As a result, the heater 100 is supported by the wheel part 127, and the heater 100 can move freely.

[0049] In addition, the heater 100 includes a frame portion 150 provided to surround the upper side of the fuel tank portion 120 and the periphery of the combustion tube portion 110. This can increase the overall rigidity of the heater 100, and can prevent an operator from accidentally touching the high-temperature combustion tube portion 110 during use.

[0050] As already explained, the combustion tube section cover 10 constituting the anti-fouling cover 1 of this embodiment is capable of covering the tube section outer surface 114 of the combustion tube section 110, and has flexibility that allows it to deform along the curved shape of the tube section outer surface 114.

[0051] 1, the combustion tubular section cover 10 has a substantially rectangular shape formed by a pair of long sides 11a, 11b and a pair of short sides 12a, 12b. Furthermore, corners 13a, 13b, 13c, and 13d where the long sides 11a, 11b and the short sides 12a, 12b intersect are chamfered with a predetermined R shape. This prevents an operator from being injured by sharp corners 13a, etc. when attaching the combustion tubular section cover 10 to the combustion tubular section 110.

[0052] In addition, one of the long sides 11a of the substantially rectangular shape is provided with a protruding piece 14 that protrudes in a rectangular shape near the center. The other long side 11b does not have a configuration like the protruding piece 14. This makes it easy to identify the installation direction (front-rear direction) to the combustion tube section 110. Furthermore, the installation position can be confirmed by aligning the position of the protruding piece 14 with the upper end of the tube section main body 111. The corners of the protruding piece 14 are also chamfered.

[0053] The combustion tube section cover 10 has flexibility that allows it to deform under stress, and therefore can be attached while being deformed along the curved shape of the tube section outer surface 114 of the cylindrical combustion tube section 110 (tube section main body 111).

[0054] To attach the combustion cylindrical section cover 10 to the combustion cylindrical section 110, first, the long sides 11a, 11b of the approximately rectangular combustion cylindrical section cover 10 in the unfolded state shown in Fig. 1 are aligned with the front-rear position of the cylindrical section main body 111 (left-right direction on the paper in Fig. 4). Then, the combustion cylindrical section cover 10 is wrapped around the cylindrical section main body 111 from above to cover the cylindrical section outer surface 114 (see Fig. 3). In this way, the combustion cylindrical section cover 10 is attached to the combustion cylindrical section 110. Note that Fig. 3 is a schematic diagram showing an example of how the combustion cylindrical section cover 10 is attached, and the actual attachment is not limited to this.

[0055] The cover mounting part 30 is not particularly limited, and a well-known one can be used. For example, the short side parts 12a, 12b of the combustion cylindrical part cover 10 are overlapped with each other and are attached closely to the cylindrical part main body 111, and then screwed, or magnets are placed near the short side parts 12a, 12b of the combustion cylindrical part cover 10 and fixed by magnetic force. Note that hook-and-loop fasteners, hooks, buttons, etc. can also be used for fixing. In the antifouling cover 1 of this embodiment, the combustion cylindrical part cover 10 is fixed by screws.

[0056] 3 and 4 show that the entire circumference of the tubular body 111 is covered with the combustion tubular cover 10, but the antifouling cover of the present invention is not limited to this. For example, the short side portions 12a, 12b of the combustion tubular cover 10 may be fixed to the combustion tubular support portion 130, the fuel tank portion 120, or the frame portion 150 described above.

[0057] In this case, it becomes possible to cover at least a portion of the tubular outer surface 114 of the combustion tubular section 110, more specifically, at least the upper half of the tubular outer surface 114 of the combustion tubular section 110 (upward in the plane of the paper in Figure 3), in a curved and deformed state.

[0058] As shown in Fig. 2, the fuel tank cover 20 is mainly composed of a rectangular cover top surface 21 for covering the tank top surface 122, and four rectangular cover side surfaces 22a, 22b, 22c, and 22d extending from each side of the cover top surface 21. Furthermore, on the sides of the cover side surface 22a facing the cover side surfaces 22c and 22d, respectively, are provided convex pieces 23a and 23b with chamfered corners. Similarly, on the sides of the cover side surface 22b facing the cover side surfaces 22c and 22d, respectively, are provided convex pieces 23c and 23d. Furthermore, linear insertion portions 24a, 24b, 24c, and 24d are provided at the positions of the cover side surfaces 22c and 22d facing the convex piece portion 23a, etc.

[0059] 2 is a development view of fuel tank cover 20, and the two-dot chain lines in the drawing are mountain fold lines. Therefore, by bending cover side surfaces 22a, 22b, 22c, and 22d at right angles to cover top surface 21, the sides of cover side surface 22a, etc. are aligned with each other. Furthermore, by inserting protruding piece portions 23a, etc. into insertion portions 24a, etc. while deforming them, the sides of cover side surface 22a, etc. are aligned with each other to assemble into a box shape. That is, fuel tank cover 20 has a box shape that is open downward when assembled.

[0060] By placing the assembled fuel tank cover 20 over the fuel tank 120, the upper part of the fuel tank 120 can be covered as shown in FIG.

[0061] A square cutout 25 is provided in the approximate center of the cover upper surface 21 of the fuel tank cover 20 constituting the antifouling cover 1 of this embodiment. That is, the fuel tank cover 20 has a donut shape with the center cutout in the development view of Fig. 2. In addition, the fuel tank cover 20 further has a communication portion 26 that communicates between a part of the outer periphery (corresponding to the outer side of the cover side surface 22d in Fig. 2) and the cutout portion 25. The communication portion 26 is a cut in the fuel tank cover 20 in the development state, and the cover side surface 22c and a part of the cover upper surface 21 can be separated from each other with the communication portion 26 as a boundary.

[0062] As a result, when attempting to attach fuel tank section cover 20 to fuel tank section 120, square cutout section 25 can be fitted into combustion tubular section support section 130 while expanding communication section 26. As a result, fuel tank section cover 20 can be attached even when combustion tubular section 110 is supported by combustion tubular section support section 130.

[0063] Fuel tank cover 20 is provided with circular cutouts 27a and 27b around cutout 25. One circular cutout 27a is aligned with fuel filler port 123 and fuel cap 124 of fuel tank 120.

[0064] Therefore, when fuel tank cover 20 is placed over fuel tank 120, there is no interference with fuel inlet 123, etc. Similarly, for the other circular cutout 27b, interference with a portion of fuel tank 120 protruding from tank top surface 122 can be avoided.

[0065] As described above, the antifouling cover 1 of this embodiment can independently cover the combustion cylinder section 110 and the fuel tank section 120 of the heater 100. The combustion cylinder section cover 10 and the fuel tank section cover 20 are made of materials that are flame retardant, flexible, and transparent, and therefore will not burn even when the heater 100 is in use and have sufficient heat resistance.

[0066] In addition, due to its flexibility and transparency, it can be deformed appropriately according to the shape of the heater 100 to cover the cylindrical outer surface 114 and the tank outer surface 121. Furthermore, since the entire antifouling cover 1 is made of a transparent sheet material, visibility of the heater 100 from the outside is not impaired.

[0067] In addition, after use at a construction site or the like, the outer surface of the heater 100 can be kept clean by removing the dirt-proof cover 1. This simplifies conventional cleaning and maintenance work, allowing the heater 100 to operate efficiently.

[0068] The antifouling cover of the present invention may use a fuel tank cover 40 having an alternative configuration shown in Figs. 5 and 6 below. Figs. 5 and 6 are development views showing an alternative configuration of the fuel tank cover 40 constituting the antifouling cover of the present invention. Here, since the basic configuration of the fuel tank cover 40 has already been explained, some components are not shown or are given the same reference numerals, and detailed explanations are omitted. In the following explanation, components such as the heater 100 are given the same reference numerals as those shown in Figs. 3 and 4.

[0069] The fuel tank section cover 40 of the alternative configuration has a first fuel tank section cover 41 and a second fuel tank section cover 42 formed independently and separably from the first fuel tank section cover 41. Here, the first fuel tank section cover 41 can cover one side surface side of the fuel tank section 120 (for example, the left side surface side in FIG. 4), and the second fuel tank section cover 42 can cover the other side surface side of the fuel tank section 120 (for example, the right side surface side in FIG. 4).

[0070] The first fuel tank cover 41 has a first recess 43 on a cover side 41a facing the second fuel tank cover 42, and the second fuel tank cover 42 has a second recess 44 on a cover side 42a facing the first recess 43 of the first fuel tank cover 41. By bringing the first fuel tank cover 41 and the second fuel tank cover 42 close to each other and overlapping portions of them, a square-shaped cutout portion 45 can be formed by the first recess 43 and the second recess 44 (see the hatched portion in FIG. 6).

[0071] This allows the fuel tank cover 40 to be attached while avoiding the combustion cylinder support part 130 erected on the tank top surface 122. In other words, the configuration of the communication part 26 in the fuel tank cover 20 in FIG. 2 described above can be omitted. [Industrial Applicability]

[0072] The stain-proof cover of the present invention can prevent the accumulation or adhesion of dust and sticky substances on the hot air heater. [Explanation of symbols]

[0073] 1: Anti-stain cover 10: Combustion tube cover 11a, 11b: Long side 12a, 12b: Short side 13a, 13b, 13c, 13d: corner 14:Protruding piece 20: Fuel tank cover 21: Top of cover 22a, 22b, 22c, 22d: Cover side 23a, 23b, 23c, 23d: Convex piece 24a, 24b, 24c, 24d: Insertion part 25,45: Hollowed out section 26:Communication part 27a, 27b: Circular cutout 30: Cover attachment part 40: Fuel tank cover 41: First fuel tank cover 41a, 42a: Cover edge 42: Second fuel tank cover 43: First recess 44: Second recess 100: Heater (hot air heater) 110: Combustion tube section 111: Main body of the cylinder 112:Hot air outlet 113: Fresh air intake 114:Cylinder outer surface 120: Fuel tank section 121: Tank outer surface 122: Top of tank 123:Fuel filler 124: Fuel cap part 125: Underside of tank 126: Axle part 127: Wheel section 130: Combustion tube support part 140: Support leg 150: Frame section

Claims

1. A dirt-proof cover to be attached to a hot air heater having a combustion tube portion having a cylindrical shape with the cylindrical axis direction aligned horizontally, A combustion cylinder cover formed of a flame-retardant material; a cover mounting portion for mounting the combustion tube cover on the hot air heater; Equipped with The combustion cylinder cover is A dirt-resistant cover formed of a transparent sheet material that has flexibility allowing it to deform along the outer surface of the combustion tubular portion, covers at least a portion of the outer surface of the tubular portion, and allows the combustion tubular portion to be viewed from the outside.

2. The hot air heater is A fuel tank portion for storing fuel; a combustion tube support portion that is provided on an upper surface of the fuel tank portion and supports the combustion tube portion from below; Further comprising:

2. The antifouling cover according to claim 1, further comprising a fuel tank cover that covers at least a portion of an outer tank surface of the fuel tank and is made of a transparent sheet material that allows the fuel tank to be viewed from the outside.

3. The combustion cylinder cover and the fuel tank cover are 3. The antifouling covers according to claim 2, which are formed independently of each other.

4. The fuel tank cover is The combustion tube support portion has a hollowed-out portion at a position corresponding to the hollowed-out portion, and the hollowed-out portion has a doughnut shape.

4. The dirt-proof cover according to claim 2, further comprising a communication portion that communicates between a part of an outer periphery of the fuel tank cover and the hollowed-out portion.

5. The fuel tank cover is a first fuel tank cover that covers one side surface of the fuel tank; a second fuel tank cover that is formed independently and separably from the first fuel tank cover and covers the other side surface of the fuel tank; The stain-resistant cover according to claim 2 or 3, further comprising:

6. The combustion cylinder cover and the fuel tank cover are 4. The stain-resistant cover according to claim 2 or 3, which is formed using a PET resin sheet processed into a sheet shape.

Images