JP2006191839A - Hot water type weeding apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot water type weeding apparatus with which the whole is compactly constituted and which is readily movable and handleable. <P>SOLUTION: The hot water type weeding apparatus is equipped with a coiled tube 46 for hot water, which freely sends water from one end opening to the other end opening and forms a coiled tube shape, water supply parts 42, 44 and 45 which are connected to the one end opening of the coiled tube 46 for hot water and freely sends water to the coiled tube 46 for hot water, a vaporization coiled tube 26 as a heating means that heats the coiled tube 46 for hot water, makes water in the coiled tube 46 for converting water into hot water and a hot water spray nozzle 48 that is arranged at the other opening of the coiled tube 46 for hot water and sprays hot water in the coiled tube 46 for hot water. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a hot water type weeding device that removes weeds using hot water or hot water.

Conventionally, as a weeding device for removing weeds growing in a garden of a house, there are a mechanical weeding device for cutting and removing weeds with a rotary saw blade, and a flame type weeding device for removing weeds by burning with a flame. Moreover, as a weeding device, a hot water type weeding device has been proposed in which hot water or hot water is sprayed on weeds and the weeds are killed by the heat of the hot water. As this type of hydrothermal weeding apparatus, for example, there are techniques described in Patent Documents 1 to 3.
JP-A-9-117247 JP-A-7-163285 Japanese Utility Model Publication No. 5-85281

  The hot-water type weeding device of Patent Document 1 includes a hot water supply unit, a fuel tank that supplies fuel to a burner of the hot water supply unit, a water tank that supplies water to the hot water supply unit, on a carriage with a hand handle. And a jet nozzle connected to the hot water supply unit via a heat-resistant hose.

  The hot-water type weeding device of Patent Document 2 includes a burner with a fuel tank, a jet tank facing a heating section of the burner, and an injection means or an injection pipe associated with a discharge port of the jet tank Will be installed.

  The hot water type weeding device of Patent Document 3 connects a boiler and a hot water jetting part with a gripping part by a hot water feeding pipe, the boiler is provided with a pump and a burner, and hot water is supplied to the hot water jetting part with a gripping part. A tube opening / closing valve is provided.

  However, the hydrothermal weeding device described in any of Patent Documents 1 to 3 is large in size and has room for improvement in terms of carrying and handling.

  Then, this invention makes it a subject to provide the hot-water type weeding apparatus which comprises the whole compactly and is easy to carry and handle.

  According to the first aspect of the present invention, a hot-water type weeding device includes a hot-water serpentine having a serpentine shape through which water can flow from one end opening to the other end opening, and one end opening of the hot-water serpentine. A water supply unit that is connected and is capable of supplying water into the hot water serpentine through the one end opening; and heating the hot water serpentine to heat water in the hot water serpentine supplied from the water supply unit. Heating means that uses water, and a hot water injection unit that is provided at the other end opening of the hot water serpentine tube and injects hot water in the hot water serpentine tube from the other end opening of the hot water serpentine tube.

  According to the second aspect of the present invention, there is provided a hot water type weeding device, a hot water serpentine tube having a serpentine shape allowing water to flow from one end opening to the other end opening, a water supply tank for storing water, A water supply pump capable of pumping water in the water supply tank; and a water supply pipe connected between the water supply tank and one end opening of the hot water snake pipe, and pumped from the water supply tank by the water supply pump. A water supply unit capable of supplying water by being pumped into one end opening of the hot water serpentine pipe through the water supply pipe, a fuel tank for storing liquid fuel, and a liquid fuel in the fuel tank capable of being pumped. A fuel pump and a liquid fuel pumped from the fuel tank by the fuel pump are ignited to form a flame, and the flame is injected into the hot water serpentine tube to directly or indirectly heat the hot water serpentine tube. , Pumped from the water supply unit into the hot water serpentine A burner that uses the water in the supplied hot water serpentine as hot water and the other end opening of the hot water serpentine pipe, and the hot water in the hot water serpentine pipe is supplied to the other end of the hot water serpentine A hot water injection unit that injects on the opening side.

  The hot water type weeding apparatus according to the present invention has a compact configuration as a whole, and is easy to carry and handle. Moreover, the hot-water-type weeding apparatus which concerns on this invention can also enlarge only an operation part, such as a hot-water injection part, by enlarging an oil supply tank or a water supply tank, if necessary.

  Hereinafter, the best mode for carrying out the present invention (hereinafter referred to as an embodiment) will be described. Throughout each embodiment, the same members, elements, or parts are denoted by the same reference numerals, and the description thereof is omitted.

Embodiment 1
FIG. 1 is a side view showing an internal structure by cutting a part of the hydrothermal weeding apparatus according to Embodiment 1 of the present invention. FIG. 2 shows the relationship between the hot water serpentine and the burner of the hot water weeding apparatus according to Embodiment 1 of the present invention, and (a) shows the state before extrapolating the hot water serpentine to the vaporizing serpentine. FIG. 2B is a side view showing a state after the hot water serpentine tube is extrapolated to the vaporizing serpentine tube, and the hot water serpentine tube and the serpentine tube portion of the vaporizing serpentine tube are shown in cross section.

  As shown in FIGS. 1 and 2, the hot water weeding apparatus according to Embodiment 1 has a cylindrical casing 11. A circular opening 12 is formed at the tip (left end in FIG. 1) of the housing 11. Further, in the housing 11, disk-shaped first partition walls 13 and second partition walls 14 extending in the diametrical direction are respectively fixed to be sequentially spaced from the opening 12 to the right at a predetermined distance. Yes. A heating chamber 15 is formed between the opening 11 and the left side of the first partition wall 13 inside the housing 11. A storage chamber 16 is formed between the first partition wall 13 and the second partition wall 14 inside the housing 11. Furthermore, a fuel tank 17 as a fuel chamber is formed on the right side of the second partition wall 14 inside the housing 11 between the base end of the housing 11. In the fuel tank 17, petroleum (particularly kerosene) as liquid fuel is supplied from the outside as required, and can be stored freely. Further, a fuel pump (not shown) is accommodated in the fuel tank 17 from the base end of the casing 11, and a handle 21 thereof protrudes from the base end of the casing 11 to the outside. Further, a fuel valve 22 is disposed in the housing chamber 16 of the housing 11 so as to extend along the axis of the housing 11. One end (the right end in FIG. 1) of the fuel valve 22 passes through the second partition wall 14 and is disposed in the fuel tank 17. An operation handle 23 is attached to the fuel valve 22. Further, a fuel supply pipe 24 is connected to the other end of the fuel valve 22. The fuel valve 22 can be opened and closed by turning the operation handle 23. Then, by expanding and contracting the handle 21 and driving the fuel pump, the oil in the fuel tank 17 is pressurized and fed to the fuel valve 22, and the operation handle 23 is rotated to open the fuel valve 22. Thus, the oil in the fuel tank 17 is pumped from the fuel valve 22 to the fuel supply pipe 24. On the other hand, when the operation handle 23 is turned in the reverse direction to close the fuel valve 22, the pumping of oil in the fuel tank 17 from the fuel valve 22 to the fuel supply pipe 24 is stopped.

  The oil supply pipe 24 passes through one side in the diameter direction (the lower side in FIG. 1) of the first partition wall 13, extends in the heating chamber 15 in the length direction of the housing 11, and becomes an extension pipe 25. ing. The oil supply pipe 24 is wound in the circumferential direction from the distal end of the extended pipe 25 to form a vaporizing serpentine pipe 26. The vaporizing serpentine tube 26 has a serpentine shape through which liquid fuel can flow from one end opening (the front end side of the extending tube 25) to the other end opening. The vaporizing serpentine tube 26 is wound so that the outer peripheral surfaces of adjacent tube portions are in close contact with each other in the axial direction without any gap. The fuel pump having the handle 21, the fuel tank 17, the fuel valve 22, the operation handle 23, the fuel supply pipe 24, and the extending pipe 25 are connected to one end opening of the vaporizing snake pipe 26, and one end opening of the vaporizing snake pipe 26 is provided. Thus, a fuel supply unit capable of supplying liquid fuel into the vaporizing serpentine tube 26 is configured. Further, the other end opening side of the vaporizing snake pipe 26 is a folded pipe 27 as a conduit. The folded tube 27 is connected to the other end opening of the vaporizing serpentine tube 26, is folded back from the other end opening toward the one end opening side, extends in the vaporizing serpentine tube 26 in the axial direction, and the distal end portion thereof is vaporized. It is further folded back in the storage chamber 16 on the one end opening side of the snake pipe 26, passes through the first partition wall 13, and extends in the axial direction of the inner space of the vaporization snake pipe 26. A fuel injection nozzle 28 is connected to the tip of the folded tube 27 in the heating chamber 15. The fuel injection nozzle 28 constitutes a fuel injection part provided at the tip of the return pipe 27, and the liquid fuel supplied from the fuel supply part into the vaporization pipe 26 and introduced into the return pipe 27 is supplied to the vaporization pipe 27. 26 is injected in the axial direction.

  The fuel supply sections 17, 21 to 25, the vaporizing snake pipe 26, the return pipe 27, and the fuel injection nozzle 28 constitute the heating means of the first embodiment. The heating means injects the liquid fuel supplied from the fuel supply section into the vaporizing snake pipe 26 and the return pipe 27 from the fuel injection nozzle 28 and ignites the liquid fuel injected from the fuel injection nozzle 28. A flame F is injected in the axial direction of the vaporizing serpentine tube 26. Thus, the heating means heats not only the vaporizing snake pipe 26 but also the oil supply pipe 25 and the return pipe 27 in the heating chamber 15, and vaporizes the liquid fuel (air mixture) inside the vaporizing snake pipe 26 and the like. The fuel is injected from the fuel injection nozzle 28 in a state where the fuel is vaporized. Therefore, the fuel injection nozzle 28 can inject the flame F stably and continuously.

  On the other hand, the hydrothermal weeding apparatus according to Embodiment 1 is provided with a cylindrical auxiliary housing 31 in parallel with the housing 11. In FIG. 1, for convenience of illustration, a part of the length of the housing 11 and the auxiliary housing 31 is omitted (a two-dot chain line portion). The auxiliary housing 31 is preferably formed shorter than the housing 11, for example, preferably has a length extending from the base end of the housing 11 to about the first partition wall 13. A partition wall 32 extending in the diameter direction is fixed in the auxiliary housing 31. A storage chamber 33 is formed on the left side of the partition wall 32 in the auxiliary housing 31. In addition, although the front-end | tip of the auxiliary | assistant housing | casing 31 is obstruct | occluded and the storage chamber 34 becomes the obstruction | occlusion space, the front-end | tip of the auxiliary | assistant housing | casing 31 is open | released and the accommodation chamber 34 is good also as an open space. A water supply tank 34 as a water supply chamber is formed on the right side of the partition wall 32 inside the auxiliary housing 31 between the base end of the auxiliary housing 31. Furthermore, water can be supplied from the outside as needed into the water supply tank 34 and stored freely. Further, a water supply pump (not shown) is accommodated in the water supply tank 34 from the base end of the auxiliary housing 31, and the handle 41 protrudes from the base end of the auxiliary housing 31 to the outside. Furthermore, a water supply valve 42 is disposed in the storage chamber 33 of the auxiliary housing 31 so as to extend along the axis of the auxiliary housing 31. One end (the right end in FIG. 1) of the water supply valve 42 penetrates the partition wall 32 and is disposed in the water supply tank 34. An operation handle (not shown) is attached to the water supply valve 42 as in the case of the fuel valve 22. Further, a water supply pipe 44 is connected to the other end of the water supply valve 42. The water supply valve 42 can be opened and closed by rotating the operation handle. By extending and retracting the handle 41 and driving the water supply pump, the water in the water supply tank 34 is pressurized and fed to the water supply valve 42, and the operation handle is rotated to open the water supply valve 42. The oil in the water supply tank 34 is pumped from the water supply valve 42 to the water supply pipe 44. On the other hand, when the operation handle is turned in the reverse direction to close the water supply valve 42, the pumping of the water in the water supply tank 34 from the water supply valve 42 to the water supply pipe 44 is stopped.

  Further, the water supply pipe 44 penetrates both the auxiliary housing 31 and the connection portion of the housing 11, and then extends to the accommodation chamber 16 in the housing 11, penetrates one side in the diameter direction of the first partition wall 13, and is heated. The interior of the chamber 15 is extended in the length direction of the housing 11 to form an extended tube 45. As shown in FIG. 1, the water supply pipe 44 is preferably arranged adjacent to the oil supply pipe 24 in the accommodation chamber 16, but may be arranged separately from the oil supply pipe 45. Further, the extended pipe 45 is disposed adjacent to (in contact with) the extended pipe 25 at least at the tip, and the opening on one end side of the hot water serpentine pipe 26 is positioned adjacent to the one-side opening of the vaporizing serpentine pipe 26. Although it is preferable to arrange them, they may be arranged apart from the extension pipe 25. Further, the water supply pipe 44 is wound in the circumferential direction from the distal end of the extension pipe 45 to form a hot water serpentine pipe 46. That is, the water supply pipe 44 and the extension pipe 45 are connected between the water supply tank 34 and one end opening of the hot water snake pipe 46. Further, the hot water serpentine tube 46 has a serpentine shape through which water can freely flow from one end opening (the front end side of the extending tube 45) to the other end opening. Further, the hot water serpentine tube 46 is wound so that adjacent outer peripheral surfaces of the tube portions are in close contact with each other in the axial direction. The water supply pump having the handle 41, the water supply tank 34, the water supply valve 42, the operation handle, the water supply pipe 44 and the extension pipe 45 constitute a water supply section connected to one end opening of the hot water serpentine pipe 46. Water can be pumped and supplied into the hot water serpentine tube 46 from one end opening of the water serpentine tube 46.

  The other end opening side of the hot water snake pipe 46 is a hot water injection pipe 47. That is, the hot water injection pipe 47 constitutes a hot water injection section provided at the other end opening of the hot water serpentine pipe 46, and is supplied by the water pressure of the water supplied by being pumped from the water supply section into the hot water serpentine pipe 46. The water in the hot water serpentine tube 46 is jetted in the axial direction at the other end opening side of the hot water serpentine tube 46. The hot water injection pipe 47 extends in the axial direction toward the approximate center of the opening 12 of the housing 11 at the approximate center of the entire hot water serpentine pipe 46. The tip of the hot water injection pipe 47 is arranged at a position slightly inside from the opening 12 of the housing 11, and the hot water HW from the hot water injection pipe 47 is directed outward from the center of the opening 12 of the housing 11. So that it is sprayed to a distance a predetermined distance in the axial direction. However, the tip of the hot water injection pipe 47 can be disposed at the position of the opening 12 of the housing 11 or can be disposed at a position slightly outside the opening 12. Furthermore, the hot water injection tube 47 can be configured to have a water discharge port shape so that the hot water HW can be injected in a straight water discharge shape or a spray water discharge shape.

  The auxiliary housing 31 integrally accommodates a hot water tap 46, a water supply tank 34, a water supply pump, a water supply valve 42, and a part (base end side) of the water supply pipe 44, and is attached or held at a predetermined position. Yes. The casing 11 integrally accommodates a fuel tank 17, a fuel pump, a fuel supply valve 22, a fuel supply pipe 24, an extending portion 25, a vaporizing serpentine pipe 26, a return pipe 27, and a fuel injection nozzle 28. And a part of the water supply pipe 44 (front end side), the extended portion 45, the hot water serpentine pipe 46, the hot water injection pipe 47 and the hot water injection nozzle 48 are integrally accommodated in a predetermined position. Installed or held.

  Here, for example, the fuel pump can have the same configuration as a conventional hand pump. For example, the fuel pump is once removed from the fuel tank 17 and injected with a predetermined amount of kerosene into the fuel tank 17 and then attached to the fuel tank 17, and the handle 21 is expanded and contracted a plurality of times to supply air into the fuel tank 17. By injecting and pressurizing, an air-fuel mixture of kerosene and air in the fuel tank 17 can be formed, and the air-fuel mixture can be pumped to the fuel valve 22. The structure of such a pump is cultivated land, and is described in, for example, Japanese Utility Model Publication No. 59-81925. The feed water pump can also have the same configuration as the fuel pump.

  In the first embodiment, as described above, the heating means is configured as a burner including the vaporizing serpentine tube 26 and the like. The heating means arranges the vaporizing serpentine tube 26 in thermal connection with the hot water serpentine tube 46 and indirectly heats the hot water serpentine tube 46 with conduction heat from at least the vaporizing serpentine tube 26. Specifically, the outer diameter of the vaporizing serpentine tube 26 is substantially the same as the inner diameter of the hot water serpentine tube 46. The vaporizing serpentine tube 26 is inserted and closely arranged inside the hot water serpentine tube 46. That is, as shown in FIG. 2, the hot water serpentine tube 46 is extrapolated or fitted so as to be in close contact with the vaporizing serpentine tube 26. Thus, the vaporizing serpentine tube 26 is disposed in thermal connection with the hot water serpentine tube 46. Further, the entire axial length of the hot-water serpentine tube 46 and the entire axial length of the vaporizing serpentine tube 26 so that the entire outer surface side of the vaporizing serpentine tube 26 contacts the entire inner surface side of the hot-water serpentine tube 46. Is substantially the same. Therefore, when the vaporizing serpentine tube 26 is inserted and closely arranged inside the hot water serpentine tube 46, the vaporizing serpentine tube 26 heated by the flame F from the fuel injection nozzle 28 has the entire length thereof. Efficiently heats the entire length of In this way, the heating means directly heats the entire vaporizing pipe 26 by the flame F from the fuel injection unit, and indirectly heats the entire hot water flexible pipe 46 by the conduction heat from the vaporizing pipe 26. . The entire hot water snake pipe 46 is heated, and the water in the hot water snake pipe 46 supplied by being pumped from the water supply section into the hot water snake pipe 46 is used as hot water HW. Injected from the hot water injection nozzle 48 through 47.

  Here, the tip of the fuel injection nozzle 28 is disposed a predetermined distance before the vaporizing serpentine tube 26, the entire flame F is located inside the vaporizing serpentine tube 26, and the flame F efficiently heats the vaporizing serpentine tube 26. Thus, the efficiency of conducting and heating the hot water snake tube 46 is improved. However, the relative position (separation distance) of the tip of the fuel injection nozzle 28 with respect to one end side (right end side in FIG. 1) of the entire vaporization tube 26 is determined according to the normal flame injection distance by the fuel injection nozzle 28. Is preferable, and may be zero as long as the flame F can efficiently heat the vaporizing serpentine tube 26. That is, the relative position of the tip of the fuel injection nozzle 28 with respect to the vaporizing serpentine tube 26 is such that the entire flame F (particularly the central portion where the amount of heat is large) is disposed in the entire inner space of the vaporizing serpentine tube 26. It is preferable to set so that the flame F is not injected from the side (left end side in FIG. 1) to the outside.

  The fuel pump having the handle 21, the fuel tank 17, the fuel valve 22, and the operation handle 23 pump kerosene as liquid fuel to the vaporizing serpentine 26 through the fuel valve 22, and the pumping amount (pumping speed). ) Is configured to control the lamp hydraulic pressure feed control means 20. On the other hand, the water supply pump having the handle 41, the water supply tank 34, the water supply valve 42 and the operation handle pump water (especially water before heating, that is, cold water) through the water supply valve 42 to the hot water tap 46. The cold water pumping control means 40 is configured to control the pumping amount (pumping speed).

Action and Effect The hydrothermal weeding apparatus according to Embodiment 1 is used as follows and exhibits the following action and effect. That is, first, the fuel pump having the handle 21 is removed from the casing 11, and after a predetermined amount of kerosene is injected into the fuel tank 17, the fuel pump is attached to the casing 11 so that the fuel tank 17 is liquid-tight and air-tight. Seal. Similarly, after removing the water supply pump having the handle 41 from the auxiliary housing 31 and injecting a predetermined amount of water into the water supply tank 34, the water supply pump is attached to the auxiliary housing 31, and the water supply tank 34 is liquid-tight and airtight. To seal. At this time, both the fuel valve 22 and the water supply valve 42 are closed. Next, the handle 21 is extended and contracted, the fuel pump is operated, outside air is introduced into the fuel tank 17 to increase the pressure, the kerosene in the fuel tank 17 is atomized, and a mixture of kerosene and air is created. Thereafter, when the operation handle 23 is operated to open the fuel valve 22, the air-fuel mixture in the fuel tank 17 passes from the fuel injection nozzle 28 through the fuel supply pipe 24, the extending portion 25, the vaporizing snake pipe 26, and the return pipe 27. It becomes mist and erupts. Then, when the vaporized or atomized kerosene ejected from the fuel injection nozzle 28 is ignited, the flame F is injected from the fuel injection nozzle 28 to the inside of the vaporizing tube 26. Thereafter, the vaporizing serpentine tube 26 and the like are heated by the flame F from the fuel injection nozzle 28, and in particular, the kerosene mixture inside the vaporizing serpentine tube 26 is completely vaporized. Therefore, the flame F can be stably and continuously injected from the fuel injection nozzle 28. At this time, fuel supply from the fuel tank 17 by the fuel pump is periodically performed. In addition, before the fuel valve 22 is opened and fuel is injected from the fuel injection nozzle 28 to ignite, the extending portion 25, the vaporizing serpentine tube 26, and the return pipe 27 are heated. This is preferable because the air-fuel mixture is completely vaporized, the kerosene ejected from the fuel injection nozzle 28 can be smoothly ignited, and the combustion can be maintained smoothly after the ignition. In addition, as a heating means before such ignition, for example, a technique described in Japanese Utility Model Publication No. 62-916 can be employed.

  Next, the handle 41 is extended and contracted to operate the water supply pump, the outside air is introduced into the water supply tank 34 to increase the pressure, the cold water in the water supply tank 34 is atomized, and a mixture of cold water and air is created. This operation may be performed together with the operation of pressurizing the fuel tank 17 by the fuel pump. Thereafter, when the operation handle is operated to open the water supply valve 42, the air-fuel mixture in the water supply tank 34 passes through the water supply pipe 44, the extending portion 45, the hot water serpentine pipe 46, and the hot water injection pipe 47. It squirts from the nozzle 48 in the form of a mist. At this time, the flame F from the fuel injection nozzle 28 heats the vaporizing serpentine tube 26 and the like from the inside, and the vaporizing serpentine tube 26 and the like are heated by the flame F from the fuel injection nozzle 28. Therefore, the heat of the vaporizing snake pipe 26 is transmitted to the hot water snake pipe 46, and the cold water flowing inside the hot water snake pipe 46 can be continuously heated by the conduction heat. As a result, the cold water from the water supply pipe 44 becomes hot water HW while flowing through the hot water snake pipe 46, and hot hot water HW is jetted from the hot water jet nozzle 48. Therefore, the hot water HW can be stably and continuously jetted from the hot water jet nozzle 48. At this time, water supply from the water supply tank 34 by a water supply pump is performed regularly. The user holds the housing 11 and the auxiliary housing 31 by hand, and weeds in a place where the hot water HW sprayed from the hot water spray nozzle 48 and sprayed to the outside from the opening 12 of the housing 11 is to be weeded. Sprinkle or spray toward the etc. Thereby, weeds can be killed with the hot water HW, and weeding can be performed. Moreover, as mentioned above, the hot-water type weeding apparatus according to Embodiment 1 can be configured compactly as a whole, and is easy to carry and handle.

Embodiment 2
FIG. 3 shows the relationship between the hot water serpentine and the burner of the hot water type weeding apparatus according to Embodiment 2 of the present invention, and (a) shows the state before the hot water serpentine is inserted into the vaporizing serpentine. A side view and (b) are side views which show the state after inserting the hot water serpentine into the vaporizing serpentine. FIG. 4 is a side view showing the internal structure of the hydrothermal weeding apparatus according to Embodiment 2 of the present invention, with part of the fuel supply unit and water supply unit broken.
As shown in FIGS. 3 and 4, the hot water type weeding apparatus according to the second embodiment is the same as that of the first embodiment in the configuration of the vaporizing serpentine tube 126 and the folding tube 127 and the hot water serpentine tube 146 of the heating means. Although it differs from the hot-water type weeding apparatus which concerns, the structure other than that is the same as that of the hot-water type weeding apparatus which concerns on Embodiment 1. FIG. Specifically, in Embodiment 2, the vaporizing serpentine tube 126 of the heating means has a serpentine shape through which liquid fuel can flow from one end opening (the distal end side of the extension tube 25) to the other end opening. The vaporizing serpentine tube 126 is wound at a predetermined pitch so as to form a gap having a predetermined interval between adjacent pipe portions. Therefore, the vaporizing serpentine tube 126 has a longer axial length than the vaporizing serpentine tube 26 of the first embodiment. Further, the other end opening side of the vaporizing snake tube 126 is a folded tube 127 as a conduit. The folded tube 127 is longer than the folded tube 27 of the first embodiment in response to the axial length of the vaporizing serpentine tube 126 being longer than the axial length of the vaporizing serpentine tube 26. The configuration is the same as that of the folded tube 27. The fuel supply units 17, 21 to 25, the vaporizing snake pipe 126, the return pipe 127, and the fuel injection nozzle 28 constitute the heating means of the second embodiment.

  On the other hand, the hot water serpentine tube 146 is wound into a serpentine tube at a pitch that forms the same gap as the diameter of the vaporizing serpentine tube 126 of the heating means between adjacent tube portions. The relationship between the hot water serpentine tube 146 and the vaporizing serpentine tube 126 will be described. The vaporizing serpentine tube 126 forms a gap that is the same as the diameter of the hot water serpentine tube 146 between adjacent pipe portions, and hot water The snake tube 146 is wound into a snake tube at the same pitch. The winding diameter of the vaporizing serpentine tube 126 is the same as the winding diameter of the hot water serpentine pipe 146. The vaporizing serpentine tube 126 is disposed in close contact with the hot water serpentine tube 146 by inserting the vaporizing serpentine tube 126 in close contact with the hot water serpentine tube 146. Thus, both the vaporizing serpentine tube 126 and the hot water serpentine tube 146 are directly heated by the flame F from the fuel injection nozzle 28, and the hot water serpentine tube 146 is indirectly heated also by the conduction heat from the vaporizing serpentine tube 126. It is supposed to be. That is, the heating means injects the liquid fuel supplied from the fuel supply unit into the vaporizing snake pipe 126 and the return pipe 127 from the fuel injection nozzle 28 and ignites the liquid fuel injected from the fuel injection nozzle 28. The flame F is sprayed in the axial direction so as to extend entirely inside the vaporizing serpentine tube 126 and the hot water serpentine tube 146. Thereby, the heating means directly heats not only the vaporizing snake tube 126 but also the hot water snake tube 146. At this time, as in the first embodiment, the oil supply pipe 25 and the return pipe 27 in the heating chamber 15 are also heated, and the liquid fuel inside the vaporizing serpentine pipe 126 and the like is vaporized to be completely vaporized fuel. Is injected from the fuel injection nozzle 28.

  The hot-water type weeding apparatus according to Embodiment 2 is used in the same manner as the hot-water type weeding apparatus according to Embodiment 1 and exhibits the same actions and effects. Furthermore, since the hot-water type weeding apparatus according to Embodiment 2 directly heats the hot water serpentine tube 146, the heating efficiency can be improved. Moreover, since both the hot-water type weeding devices according to Embodiment 1 and Embodiment 2 heat the hot water serpentine tubes 46 and 146 in the shielded space in the housing 11, heat is not released to the outside. Heating can be performed efficiently. In the second embodiment, the hot water serpentine tube 146 wound at a predetermined pitch in a serpentine tube or coil shape is inserted into the gap between the vaporizing serpentine tubes 126 wound at the same pitch in the same serpentine tube or coil shape. The insertion work may be troublesome. Therefore, at least one of the vaporizing serpentine tube 126 and the hot water serpentine tube 146 is formed of a flexible tube made of metal or the like to be freely bendable, and at least one of the hot water serpentine tube 146 and the vaporizing serpentine tube 126 is deformed. After being inserted into the gap between the other pipe portions to form a predetermined coil shape, the coil shape may be fixed in the housing 11.

Embodiment 3
FIG. 5 is a side view showing the relationship between the hot water serpentine and the burner of the hot water weeding apparatus according to Embodiment 3 of the present invention.
As shown in FIG. 5, the hydrothermal weeding apparatus according to Embodiment 3 is different from the hydrothermal weeding apparatus according to Embodiment 1 or 2 in the configuration of the heating means. Specifically, the hot-water type weeding apparatus according to the third embodiment uses the vaporizing serpentine tube 26 and the like and the hot water serpentine tube 46 and the like similar to those of the first embodiment, while the vaporizing serpentine tube 26 is heated with hot water. The snake pipe 46 is arranged in series with the one end opening side of the snake pipe 46 aligned in series, and the vaporization snake pipe 26 and the hot water snake pipe 46 are both directly heated by the flame F from the fuel injection nozzle 28. Specifically, the flame F from the fuel injection nozzle 28 is first injected into the vaporizing serpentine tube 26 to directly heat the entire vaporizing serpentine tube 26, and the front side of the flame F is the hot water serpentine tube 46. It also extends inwardly and directly heats the hot water serpentine tube 46.

  The hot-water type weeding apparatus according to Embodiment 3 is used in the same manner as the hot-water type weeding apparatus according to Embodiment 1 and exhibits the same actions and effects. Furthermore, since the hot water type weeding apparatus according to Embodiment 3 directly heats the hot water serpentine tube 46, the heating efficiency can be improved. Further, the hydrothermal weeding apparatus according to the third embodiment also heats the hot water serpentine tube 46 in the shielded space in the housing 11, and therefore can efficiently heat the heat without letting it escape to the outside. .

Embodiment 4
FIG. 6 is a perspective view showing a hot water weeding apparatus according to Embodiment 4 of the present invention.
As shown in FIG. 6, the hot water type weeding apparatus according to Embodiment 4 integrally accommodates the hot water serpentine tube 46, the water supply pipe 44, the burner, and the hot water injection unit inside the housing 11. Yes. On the other hand, the hot water type weeding apparatus according to Embodiment 4 includes a large fuel pump having a large fuel tank 217 and a handle 221, and a large water pump having a large water tank 234 and a handle 241. The body 11 is integrally housed in a separate housing 211. The fuel tank 217 is connected to the fuel valve 22 by an oil supply hose 224 made of a flexible tube made of resin or the like. The fuel valve 22 is controlled to open and close by the same means as the operation handle 23. The water supply tank 234 is connected to the water supply valve 42 by an oil supply hose 244 made of a flexible pipe made of resin or the like. The water supply valve 42 is controlled to open and close by the same means as the operation handle. That is, while the first to third embodiments are embodied in a compact and compact hot water type weeding device that can be used by the user holding the whole by hand, the fourth embodiment is a large-capacity fuel. The present invention is embodied in a large-sized hot water type weeding device that includes a tank 217 and a water supply tank 234 and can withstand long-term use.

  In the hot water weeding apparatus according to Embodiment 4, the housing 211 is placed on the ground or the like of the place of use, and the user holds the housing 11 by hand, and the hot water HW from the opening 12 at the tip is weeded. Use by spraying on etc. Moreover, the hot-water type weeding apparatus which concerns on Embodiment 4 exhibits the effect | action and effect similar to the hot-water type weeding apparatus which concerns on Embodiment 1-3. Furthermore, the hot-water type weeding apparatus according to Embodiment 4 can operate only the hot-water injection part and the burner part, and can increase the capacity of the fuel tank 217 and the water supply tank 234.

  By the way, in the hot water type weeding apparatus according to the first embodiment or the third embodiment, the vaporizing serpentine tube 26 and the hot water serpentine tube 46 are arranged so that adjacent pipe portions have no gap in the axial direction in order to increase heat transfer efficiency. Although it is preferable to wind it in close contact, it may be formed with a gap between adjacent tube portions. Further, in the second embodiment, the vaporizing serpentine tube 126 and the hot water serpentine tube 146 inserted into each other are inserted so that the adjacent pipe portions are in close contact with each other in the axial direction without gaps in order to increase heat transfer efficiency. However, it is also possible to set the winding pitch so that a gap is formed between the adjacent pipe portions that are inserted. In this case, conductive heating of the hot water serpentine tube 146 by the vaporizing serpentine tube 126 cannot be expected. Further, in the first to third embodiments, the casing 11 and the auxiliary casing 31 can be integrated, and all components can be held in one casing.

  Further, the heating means of the hot water type weeding device of the present invention is disposed in a position in front of the one end opening of the hot water serpentine in the housing, and the inner space of the hot water serpentine from the one end opening side of the hot water serpentine As long as the flame is sprayed and the hot water serpentine tube is heated by the flame, a burner having a configuration other than the configuration described in the above embodiment may be used. That is, a burner as a heating means ignites liquid fuel pumped from a fuel tank by a fuel pump to form a flame, injects the flame onto a hot water serpentine tube, heats the hot water serpentine tube, and heats from a water supply unit. Any structure can be used as long as the hot water HW is used as the water in the hot water serpent tube supplied by being fed into the water serpentine. In addition to the burner that emits flame, any configuration such as an electric heating coil can be adopted as the heating means as long as the hot water serpentine tube is heated.

  Furthermore, the hydrothermal weeding device according to each of the above embodiments sprays only hot water from the opening 12 of the housing 11 to kill weeds, but the hydrothermal weeding device according to the present invention is While hot water is sprayed onto the weeds from the hot water spray nozzle 48, the weeds are killed, while the flame F from the fuel spray nozzle 28 of the burner is sprayed to the outside from the front end opening 12 of the housing 11. The weeds and the like may be removed by incineration with the flame F. In this case, the hot water HW from the hot water spray nozzle 48 can be sprayed on the weeds that have been incinerated by the flame from the burner, so that the fire extinguishing function can be exhibited together with the weed killing function. In this case, unexpected excessive combustion by the flame F can be prevented.

FIG. 1 is a side view showing an internal structure by cutting a part of the hydrothermal weeding apparatus according to Embodiment 1 of the present invention. FIG. 2 shows the relationship between the hot water serpentine and the burner of the hot water weeding apparatus according to Embodiment 1 of the present invention, and (a) shows the state before extrapolating the hot water serpentine to the vaporizing serpentine. FIG. 2B is a side view showing a state after the hot water serpentine tube is extrapolated to the vaporizing serpentine tube, and the hot water serpentine tube and the serpentine tube portion of the vaporizing serpentine tube are shown in cross section. FIG. 3 shows the relationship between the hot water serpentine and the burner of the hot water type weeding apparatus according to Embodiment 2 of the present invention, and (a) shows the state before the hot water serpentine is inserted into the vaporizing serpentine. A side view and (b) are side views which show the state after inserting the hot water serpentine into the vaporizing serpentine. FIG. 4 is a side view showing the internal structure of the hydrothermal weeding apparatus according to Embodiment 2 of the present invention, with part of the fuel supply unit and water supply unit broken. FIG. 5 is a side view showing the relationship between the hot water serpentine and the burner of the hot water weeding apparatus according to Embodiment 3 of the present invention. FIG. 6 is a perspective view showing a hot water weeding apparatus according to Embodiment 4 of the present invention.

Explanation of symbols

11: Housing, 12: Opening, 17: Fuel tank 22: Fuel valve (fuel supply unit), 24: Refueling pipe (fuel supply unit)
26: snake pipe for vaporization, 27: folded pipe (conduit), 28: fuel injection nozzle (fuel injection part)
31: Auxiliary housing (housing)
34: Water supply tank, 44: Water supply pipe, 46: Hot water serpentine pipe 48: Hot water injection nozzle (hot water injection section)
126: snake pipe for vaporization, 127: folded pipe (conduit), 146: snake pipe for hot water 211: housing, 217: fuel tank, 234: water supply tank F: flame, HW: hot water

Claims (11)

A hot water serpentine tube having a serpentine shape that allows water to freely flow from one end opening to the other end opening;
A water supply unit connected to one end opening of the hot water serpentine tube and capable of supplying water into the hot water serpentine tube from the one end opening;
Heating means for heating the hot-water serpentine and using water in the hot-water serpentine supplied from the water supply unit as hot water;
A hot water type, comprising: a hot water injection section provided at the other end opening of the hot water serpentine tube and jetting hot water in the hot water serpentine tube from the other end opening of the hot water serpentine tube. Weeding equipment.   The heating means is a burner for injecting a flame into an inner space of the hot water serpentine from one end opening side of the hot water serpentine and heating the hot water serpentine with the flame. Item 1. The hydrothermal weeding apparatus according to Item 1. Furthermore, a cylindrical housing that accommodates the hot water serpentine tube is provided,
The heating means is disposed at a position in front of the one end opening of the hot water snake pipe in the casing, and injects flame from the one end opening side of the hot water snake pipe into the inner space of the hot water snake pipe. The hot-water type weeding device according to claim 1, wherein the hot-water type weeding device is a burner that heats the hot-water serpentine tube by the flame. A hot water serpentine tube having a serpentine shape that allows water to freely flow from one end opening to the other end opening;
A water supply tank for storing water, a water supply pump capable of pumping water in the water supply tank, and a water supply pipe connected between the water supply tank and one end opening of the hot water serpentine pipe, A water supply section that can supply water pumped from the water supply tank by a pump, through the water supply pipe, from one end opening of the hot water serpentine pipe to the inside;
A fuel tank for storing liquid fuel;
A fuel pump capable of pumping liquid fuel in the fuel tank; and
The liquid fuel pumped from the fuel tank by the fuel pump is ignited to form a flame, and the flame is injected into the hot water serpentine to directly or indirectly heat the hot water serpentine, and the water supply unit A burner having hot water as the water in the hot water serpentine tube fed by pressure into the hot water serpentine tube;
A hot water spraying portion provided at the other end opening of the hot water serpentine tube and for spraying hot water in the hot water serpentine tube on the other end opening side of the hot water serpentine tube; Type weeding device.   And a casing that integrally holds the hot water snake pipe, the water supply tank, the water supply pump, the water supply pipe, the fuel tank, the fuel pump, the burner, and the hot water injection unit. The hydrothermal weeding device according to claim 4.   Furthermore, the casing for integrally housing the hot water serpentine tube, the water supply pipe, the burner and the hot water injection unit, and the water supply tank, the water supply pump, the fuel tank and the fuel pump are integrally held. The hot water type weeding device according to claim 4, further comprising The heating means is connected to a vaporizing serpentine having a serpentine shape allowing liquid fuel to flow from one end opening to the other end opening, and one end opening of the vaporizing serpentine, and liquid is supplied from the one end opening into the vaporizing serpentine. A fuel supply section capable of supplying fuel and the other end opening of the vaporizing snake pipe are connected to the other end opening so as to be folded back to the one end opening side and further folded at the one end opening side. A conduit extending in the axial direction of the inner space of the vaporizing serpentine tube, and provided at the distal end of the conduit, supplied from the liquid fuel supply unit into the vaporizing serpentine tube, and introduced into the conduit A fuel injection section for injecting liquid fuel in the axial direction of the vaporizing serpentine tube,
The heating means injects the liquid fuel supplied from the fuel supply unit into the vaporizing snake pipe and the conduit from the fuel injection unit and ignites the liquid fuel injected from the fuel injection unit, The flame is injected in the axial direction of the vaporizing serpentine tube, whereby at least the vaporizing serpentine tube is heated, and the liquid fuel in the vaporizing serpentine tube is vaporized to form vaporized fuel from the fuel injection unit. Configured as a jetting burner,
The heating means is arranged by thermally connecting the vaporizing serpentine tube to the hot water serpentine tube, and heating the hot water serpentine tube at least by conduction heat from the vaporizing serpentine tube. The hydrothermal weeding apparatus according to 1.   The heating means has the outer diameter of the vaporizing serpentine tube substantially the same as the inner diameter of the hot water serpentine tube, and the vaporizing serpentine tube is inserted inside the hot water serpentine tube so as to be closely arranged. A serpentine tube is arranged in thermal connection with the hot water serpentine tube, the vaporizing serpentine tube is heated by a flame from the fuel injection section, and the hot water serpentine tube is indirectly connected by conduction heat from the vaporizing serpentine tube. The hot-water type weeding apparatus according to claim 7, wherein the heating is performed automatically. The hot water serpentine tube is wound into a serpentine tube at a pitch that forms the same gap as the diameter of the vaporizing serpentine tube of the heating means between adjacent pipe portions,
The heating means is configured so that the vaporizing serpentine has a serpentine shape at the same pitch as the hot water serpentine so that a gap having the same diameter as that of the hot water serpentine is formed between adjacent pipe portions of the vaporizing serpentine. The winding diameter of the vaporizing serpentine tube is made the same as the winding diameter of the hot water serpentine tube, and the vaporizing serpentine tube is inserted into a gap between the tube portions of the hot water serpentine tube and closely arranged. The vaporizing serpentine tube is thermally connected to the hot water serpentine tube, and both the vaporizing serpentine tube and the hot water serpentine tube are directly heated by the flame from the fuel injection unit, and the vaporization is performed. The hot water type weeding apparatus according to claim 7, wherein the hot water serpentine tube is indirectly heated by conduction heat from the serpentine tube. The heating means is connected to a vaporizing serpentine having a serpentine shape allowing liquid fuel to flow from one end opening to the other end opening, and one end opening of the vaporizing serpentine, and liquid is supplied from the one end opening into the vaporizing serpentine. A fuel supply section capable of supplying fuel and the other end opening of the vaporizing snake pipe are connected to the other end opening so as to be folded back to the one end opening side and further folded at the one end opening side. A conduit extending in the axial direction of the inner space of the vaporizing serpentine tube, and provided at the distal end of the conduit, supplied from the liquid fuel supply unit into the vaporizing serpentine tube, and introduced into the conduit A fuel injection section for injecting liquid fuel in the axial direction of the vaporizing serpentine tube,
The heating means injects the liquid fuel supplied from the fuel supply unit into the vaporizing snake pipe and the conduit from the fuel injection unit and ignites the liquid fuel injected from the fuel injection unit, The flame is injected in the axial direction of the vaporizing serpentine tube, whereby at least the vaporizing serpentine tube is heated, and the liquid fuel in the vaporizing serpentine tube is vaporized to form vaporized fuel from the fuel injection unit. Configured as a jetting burner,
The heating means arranges the vaporizing serpentine tube in series on one end opening side of the hot water serpentine tube (with the axes aligned with each other), and the vaporizing serpentine tube and the heat are generated by a flame from the fuel injection unit. 2. The hydrothermal weeding apparatus according to claim 1, wherein both the water serpentine tubes are directly heated.   While spraying the hot water from the hot water injection unit to the weeds, spraying the flame from the burner to the weeds, and spraying the hot water from the hot water injection unit to the weeds burned by the flame from the burner The hydrothermal weeding device according to any one of claims 2 to 10, characterized in that it is made.

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