Gas tank heater

Abstract

The present application provides a gas tank heater, comprising: a shell, which is a curved surface matched with the bottom of the gas tank and has an open bottom structure; a magnet, which is arranged outside the shell and can be attached to the bottom of the gas tank; a heating device, which is arranged inside the shell and used for heat transfer to the gas tank; and a bottom cover, which is combined with the bottom of the shell in the state that the heating device is installed inside the shell.

Description

Technical Field

[0001] This invention relates to a gas cylinder heater that can be used not only for butane gas cylinders but also for isobutane gas cylinders. Background Technology

[0002] Generally, butane gas is a liquefied petroleum gas with butane as its main component. Butane is a petroleum gas that liquefies when pressurized to approximately 5 atmospheres at room temperature. Butane gas is compressed into small cylinders and other gas containers for sale as fuel for homes or campsites.

[0003] In addition, isobutane gas is produced by combining less than 20% butane gas and more than 80% propane gas, taking advantage of the properties of butane and propane gas. Isobutane gas is a gas that can be ignited even at -10°C.

[0004] Butane and isobutane can be filled in portable gas canisters for use on climbing gas stoves or simple gas cooktops.

[0005] Since portable gas canisters are used in an environment exposed to the outside air, when the ambient temperature is low, such as in winter, the gas inside the canister may condense excessively due to the low temperature, making it difficult to vaporize and thus preventing a smooth supply.

[0006] Furthermore, during the process of supplying liquefied gas filled in portable gas canisters to the gas furnace, the gas canisters absorb heat from the surrounding environment, causing their temperature to drop sharply. At the same time, the gas inside is excessively condensed, resulting in an unstable gas supply.

[0007] As a result, the amount of gas ejected from the portable gas canister is reduced, leading to a decrease in firepower. There is a problem that even if there is residual gas inside the canister, the firepower is significantly reduced or the gas fails to ignite.

[0008] However, existing gas cylinder heaters are bulky and inconvenient to carry. Furthermore, since existing gas cylinder heaters lack other devices to accommodate different sized gas cylinders, they cannot simultaneously use butane and isobutane gas cylinders of different shapes, resulting in the inconvenience of requiring separate butane and isobutane gas cylinder heaters.

[0009] Therefore, the present invention proposes a gas cylinder heater that is easy to carry by minimizing its size and can be used not only for butane gas cylinders but also for isobutane gas cylinders.

[0010] Existing technical documents

[0011] Patent documents

[0012] Patent document 1: Korean Patent No. 10-1922975 (Published on November 28, 2018) Summary of the Invention

[0013] To address the aforementioned problems, the present invention aims to provide a gas cylinder heater that is easy to carry by minimizing its size and can be used not only for butane gas cylinders but also for isobutane gas cylinders.

[0014] To achieve the aforementioned objective, the present invention provides a gas cylinder heater, comprising: a housing configured as a curved surface matching the bottom of the gas cylinder and having an open bottom structure; a magnet disposed on the outside of the housing and attachable to the bottom of the gas cylinder; a heating element disposed inside the housing for transferring heat to the gas cylinder; and a bottom cover, which is attached to the bottom of the housing while the heating element is installed inside the housing.

[0015] Furthermore, the device includes multiple circular heat sinks arranged concentrically on the outer side of the outer casing, as well as radial heat sinks that intersect with the circular heat sinks. The intersecting structure of the circular and radial heat sinks forms a containment space for accommodating the heat transfer medium.

[0016] Furthermore, the heating device includes: a printed circuit board; a heater connected to the printed circuit board and transferring heat to the housing; and a temperature sensor connected to the printed circuit board.

[0017] Furthermore, the heating device also includes a bimetallic switch connected to the printed circuit board in a state separated from the housing, which cuts off the power supply when the air temperature inside the housing is higher than a set temperature.

[0018] Furthermore, the gas canister is either a first gas canister or a second gas canister, and the outer shell is attached to the bottom of the first gas canister when the first cover is attached, or attached to the bottom of the second gas canister when the second cover is attached.

[0019] Furthermore, the first gas cylinder is a butane gas cylinder, the second gas cylinder is an isobutane gas cylinder, and the first and second caps are silicone caps.

[0020] Furthermore, a heat transfer medium is filled between the bottom of the first gas tank and the outer shell, or between the bottom of the second gas tank and the outer shell.

[0021] Furthermore, the first cover includes: an annular body surrounding the edge of the outer shell, with its outer surface tightly abutting the bottom of the first gas canister when engaged with the bottom of the first gas canister to achieve water tightness; and a handle extending from one side of the body.

[0022] Furthermore, the second cover includes: a body having a through hole in the center, the outer shell being surrounded by the remaining portion excluding the through hole, and configured as a curved surface matching the bottom of the second gas canister; and a handle extending from one side of the body.

[0023] Furthermore, the main body has multiple concentric steps in a stepped structure between the through hole and the edge, and the steps are in close contact with the bottom of the second gas tank to achieve water tightness.

[0024] Invention Effects

[0025] This invention is easy to carry by minimizing its size.

[0026] Furthermore, the present invention can be used for butane gas cylinders by combining a first cover with a gas cylinder heater.

[0027] Furthermore, this invention can be used for isobutane gas cylinders by combining a second cover with a gas cylinder heater. Attached Figure Description

[0028] Figure 1 This is a perspective view of the outer casing according to a preferred embodiment of the present invention.

[0029] Figure 2 This is a side view of the casing according to a preferred embodiment of the present invention.

[0030] Figure 3 This is a top view of the outer casing according to a preferred embodiment of the present invention.

[0031] Figure 4 This is a bottom view of the outer casing according to a preferred embodiment of the present invention.

[0032] Figure 5 It is along Figure 3 A cross-sectional view of line AA.

[0033] Figure 6 This is a view of a first gas tank and a second gas tank according to a preferred embodiment of the present invention.

[0034] Figure 7 This is a perspective view of the first cover according to a preferred embodiment of the present invention.

[0035] Figure 8 This is a top view of the first cover according to a preferred embodiment of the present invention.

[0036] Figure 9 It is along Figure 8 A cross-sectional view of the BB line.

[0037] Figure 10 This is a view showing the state in which a gas tank heater is attached to the bottom surface of the first gas tank according to a preferred embodiment of the present invention.

[0038] Figure 11 This is a perspective view of the second cover according to a preferred embodiment of the present invention.

[0039] Figure 12 This is a top view of the second cover according to a preferred embodiment of the present invention.

[0040] Figure 13 It is along Figure 12 A cross-sectional view of the CC line.

[0041] Figure 14 This is a diagram showing the state in which a gas tank heater is attached to the bottom surface of the second gas tank according to a preferred embodiment of the present invention.

[0042] (Explanation of reference numerals in the attached diagram)

[0043] 10: Outer casing 11: Circular heat sink

[0044] 12: Radial heat sink 13: Storage space

[0045] 14: Combining space 15: Combining protrusions

[0046] 20: Magnet; 30: Heating device

[0047] 31: Printed circuit board; 32: Heater

[0048] 33: Temperature sensor 34: Bimetallic switch

[0049] 40: Bottom cover 50: First cover

[0050] 51: Main body 51a: Side protrusion

[0051] 52: Handle 52a: Friction protrusion

[0052] 53: Joint groove; 60: Second cover

[0053] 61: Body 61a: Through hole

[0054] 61b: Step 62: Handle

[0055] 62a: Friction protrusion; 63: Joint groove

[0056] 70: First gas tank 71: Bottom

[0057] 80: Second gas tank 81: Bottom M: Thermal medium Detailed Implementation

[0058] The preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings. First, it should be noted that when labeling the constituent elements in the drawings, the same symbols are used for the same constituent elements even when they are displayed on different drawings. In describing the present invention, detailed descriptions of related well-known structures or functions are omitted if it is determined that a specific description would obscure the essence of the invention. Furthermore, a preferred embodiment of the present invention will be described below; however, the technical spirit of the present invention is not limited thereto, and various modifications can be made by those skilled in the art.

[0059] Figure 1 This is a perspective view of the outer casing according to a preferred embodiment of the present invention. Figure 2 This is a side view of the casing according to a preferred embodiment of the present invention. Figure 3 This is a top view of the outer casing according to a preferred embodiment of the present invention. Figure 4 This is a bottom view of the outer casing according to a preferred embodiment of the present invention.

[0060] refer to Figures 1 to 4 The present invention includes: a housing 10 made of a heat-conducting metal; a magnet 20 disposed on the outside of the housing 10; a heating device 30 disposed inside the housing 10; and a bottom cover 40 attached to the bottom of the housing 10. The bottom cover 40 can be connected to the bottom of the housing 10 by means of bolts or other connecting members.

[0061] Specifically, the surface of the outer casing 10 facing the bottom of the gas tank is formed as a curved surface that matches the bottom of the gas tank. A connecting space 14 is provided at the upper part of the outer casing 10. A magnet 20 is connected to the connecting space 14. The bottom of the outer casing 10 is configured as an open structure communicating with the interior. The heating device 30 can be inserted into the interior of the outer casing 10 for assembly through the bottom of the outer casing 10.

[0062] The outer casing 10 may have heat sinks on its exterior. Heat from the heater 32 can be easily transferred to the gas tank through the heat sinks.

[0063] The heat sink includes circular heat sinks 11 and radial heat sinks 12. Multiple circular heat sinks 11 are provided in a manner forming concentric circles on the surface of the outer casing 10 facing the bottom of the gas tank. Radial heat sinks 12 intersect with the circular heat sinks 11. Due to the intersecting structure of the circular heat sinks 11 and the radial heat sinks 12, a receiving space 13 can be formed.

[0064] The containment space 13 can contain a liquid heat transfer medium M, such as water. The heat transfer medium M greatly increases the contact area between the bottom of the outer shell 10 and the outer shell 10, thereby greatly improving the effect of transferring heat from the outer shell 10 to the outer shell 10.

[0065] Figure 5 It is along Figure 3A cross-sectional view of line AA. (Reference) Figure 5 The heating device 30 is assembled inside the housing 10. The heating device 30 includes: a printed circuit board 31; a heater 32 electrically connected to the printed circuit board 31; a temperature sensor 33 electrically connected to the printed circuit board 31; and a bimetallic switch 34 electrically connected to the printed circuit board 31.

[0066] Heater 32 transfers heat to housing 10 by generating heat. The heat transferred to housing 10 can be transferred to the gas tank. Temperature sensor 33 maintains the temperature of heater 32 at a set temperature.

[0067] The bimetallic switch 34 is preferably configured to be spaced apart from the housing 10, so as to sense the air temperature inside the housing 10. For example, the bimetallic switch 34 is a stabilizing device that cuts off the power supply when the air temperature inside the housing 10 exceeds a set temperature due to a malfunction of the gas cylinder heater.

[0068] Figure 6 This is a view of a first gas tank and a second gas tank according to a preferred embodiment of the present invention.

[0069] refer to Figure 6 The gas cylinder can be either a first gas cylinder 70 or a second gas cylinder 80. The first gas cylinder 70 can be a butane gas cylinder, and the second gas cylinder 80 can be an isobutane gas cylinder.

[0070] Figure 7 This is a perspective view of the first cover according to a preferred embodiment of the present invention. Figure 8 This is a top view of the first cover according to a preferred embodiment of the present invention. Figure 9 It is along Figure 8 A cross-sectional view of the BB line.

[0071] refer to Figure 8 and Figure 9 The outer casing 10 is attached to the bottom 71 of the first gas tank 70 when the first cover 50 is attached, and a heat medium such as water can be filled between the bottom 71 of the first gas tank 70 and the outer casing 10.

[0072] The outer casing 10 is attached to the bottom 81 of the second gas tank 80 when the second cover 60 is attached, and a heat medium such as water can be filled between the bottom 81 of the second gas tank 80 and the outer casing 10.

[0073] As an example, the first cover 50 and the second cover 60 are preferably made of silicone covers with excellent elasticity.

[0074] The first cover 50 is a dedicated cover for the first gas canister 70. The first cover 50 includes a body 51 and a handle 52. The body 51 can be formed into a ring shape. The body 51 is formed into a ring shape so that it can surround the edge of the outer casing 10. When the body 51 is attached to the bottom 71 of the first gas canister 70, its outer side is in close contact with the bottom 71 of the first gas canister 70 to achieve watertightness. The outer side of the body 51 can have a side protrusion 51a. The side protrusion 51a is in close contact with the bottom 71 of the first gas canister 70, which can maximize the watertight effect.

[0075] The handle 52 may be configured to extend outward from one side of the body 51 for easy pulling. The handle 52 may have friction protrusions 52a for anti-slip purposes.

[0076] Figure 11 This is a perspective view of the second cover according to a preferred embodiment of the present invention. Figure 12 This is a top view of the second cover according to a preferred embodiment of the present invention. Figure 13 It is along Figure 12 A cross-sectional view of the CC line.

[0077] refer to Figures 11 to 13 The second cover 80 is a dedicated cover for the second gas canister 80. The second cover 80 includes a body 61 and a handle 62. The body 61 has a through hole 61a and a step 61b. The body 61, except for the through hole 61a, can surround the outer casing 10. The body 61 can be formed as a curved surface that matches the bottom 81 of the second gas canister 80. The through hole 61a can be located in the center of the body 61. Preferably, the through hole 61a is larger than the magnet 20.

[0078] Multiple steps 61b are provided. Steps 61b can be configured as concentric circles forming a stepped structure between the through hole 61a and the edge of the body 61. The multiple steps 61b are independent of the size of the bottom 81 of the second gas tank 80, and one of the multiple steps 61b can be in close contact with the bottom 81 of the second gas tank 80 to achieve watertightness.

[0079] The handle 62 may be formed to extend outward from one side of the body 61 for easy pulling. The handle 62 may have anti-slip friction protrusions 62a.

[0080] The function of the first cover of the present invention will now be explained.

[0081] Figure 10 This is a view showing the state in which a gas tank heater is attached to the bottom of the first gas tank according to a preferred embodiment of the present invention.

[0082] like Figure 10As shown, in the gas tank heater of the present invention, the first cover 50 is not attached, but the bottom 71 of the first gas tank 70 is directly attached to the outer shell 10, so that the first gas tank 70 can be heated by the heat of the heater 32.

[0083] Since the outer casing 10 is equipped with a magnet 20, the outer casing 10 can be easily attached to the first gas tank 70 by the magnetic force of the magnet 20. The outer casing 10 is made of a metal with excellent thermal conductivity, such as aluminum, so the heat from the heater 32 can be easily transferred to the first gas tank 70.

[0084] However, when the gas tank heater is not attached to the first cover 50, but the outer shell 10 is directly attached to the bottom 71 of the first gas tank 70, part of the outer shell 10 is attached to the bottom 71 of the first gas tank 70, while part of the outer shell 10 is not attached to the bottom 71 of the first gas tank 70. Therefore, the heat transfer efficiency to the first gas tank 70 is reduced.

[0085] Therefore, in order to greatly improve the heat transfer efficiency to the first gas tank 70, it is preferable to attach the first cover 50 of the first gas tank 70 to the outer shell 10.

[0086] In order to greatly improve the heat transfer efficiency to the first gas tank 70, a first cover 50 of the first gas tank 70 is attached to the outer shell 10, and a heat transfer medium M such as water is filled between the bottom 71 of the first gas tank 70 and the outer shell 10.

[0087] Specifically, with the first gas tank 70 flipped up so that its bottom 71 faces upward, a heat transfer medium M, such as water, is injected into the bottom 71. With the first annular cover 50 attached to the edge of the outer casing 10, the outer casing 10 is attached to the bottom 71 of the first gas tank 70.

[0088] With the outer casing 10 attached to the bottom 71 of the first gas tank 70, it is flipped over again so that the bottom 71 of the first gas tank 70 faces downwards. At this time, the heat medium M can be contained in the containing space 13 of the outer casing 10. The heat medium M contained in the containing space 13 will not easily detach from the containing space 13 due to surface tension.

[0089] The heat transfer medium M forms a water film between the outer shell 10 and the bottom 71 of the first gas tank 70, thereby greatly increasing the contact area between the heat transfer medium M and the bottom 71 of the first gas tank 70. Heat from the heater 32 can be smoothly transferred to the first gas tank 70 through the outer shell 10 and the heat transfer medium M, thereby greatly improving the heat transfer efficiency of the bottom 71 of the first gas tank 70.

[0090] When the outer shell 10 is combined with the first cover 50, the inner circumference of the first cover 50 is in close contact with the edge of the outer shell 10, and the side protrusion 51a is tightly combined with the bottom 71 of the first gas tank 70, thereby achieving perfect water tightness.

[0091] The first cover 50, which is attached to the housing 10, can be easily removed by pulling the handle 52.

[0092] Next, the function of the second cover of the present invention will be explained.

[0093] Figure 14 This is a diagram showing the state in which a gas cylinder heater is attached to the bottom of the second gas cylinder according to a preferred embodiment of the present invention.

[0094] like Figure 14 As shown, since the gas cylinder heater of the present invention is manufactured with the bottom of the butane gas cylinder, i.e., the first gas cylinder 70, as the reference, when using an isobutane gas cylinder, i.e., the second gas cylinder 80, which is larger in size than the first gas cylinder 70, it is preferable to use it after combining it with the second cover 60 of the second gas cylinder 80.

[0095] Specifically, the second gas tank 80 is flipped so that its bottom 81 faces upward. A heat transfer medium M, such as water, is injected into the bottom 81 of the second gas tank 80.

[0096] With the outer casing 10 attached to the second cover 60, attach the outer casing 10 to the bottom 81 of the second gas canister 80. With the outer casing 10 attached to the bottom 81 of the second gas canister 80, flip the second gas canister 80 over so that the bottom 81 of the second gas canister 80 faces downwards.

[0097] The heat transfer medium M can be contained within the containment space 13 of the outer casing 10. The heat transfer medium M contained within the containment space 13 will not easily detach from the containment space 13 due to surface tension.

[0098] The heat transfer medium M forms a water film between the outer shell 10 and the bottom 81 of the second gas tank 80, thereby greatly increasing the contact area between the second gas tank 80 and the bottom 81 of the outer shell 10. The heat from the heater 32 can be smoothly transferred to the bottom 81 of the second gas tank 80 through the outer shell 10 and the heat transfer medium M, thereby greatly improving the heat transfer efficiency of the second gas tank 80.

[0099] When the outer shell 10 is combined with the second cover 60, the inner circumference of the second cover 60 is in close contact with the joint protrusion 15 on the edge of the outer shell 10, regardless of the size of the bottom 81 of the second gas tank 80. One of the multiple steps 61b is in close contact with the bottom 81 of the second gas tank 80, thereby achieving perfect water tightness.

[0100] The second cover 60, which is attached to the outer casing 10, can be easily removed by pulling the handle 62.

[0101] The above description is merely illustrative of the technical spirit of the present invention, and those skilled in the art can make various changes and modifications without departing from the essential characteristics of the invention. Therefore, the embodiments disclosed in this invention are not intended to limit but rather to explain the technical spirit of the invention, and the scope of the technical spirit of the invention should not be limited by the above embodiments. The scope of protection of this invention should be interpreted by the appended claims, and all technical spirit within its equivalents should be included within the scope of this invention.

Claims

1. A gas cylinder heater, wherein, include: The outer shell is configured as a curved surface that matches the bottom of the gas tank, and has an open bottom structure; A magnet, located on the outside of the housing, can be attached to the bottom of the gas tank; A heating element is disposed inside the outer casing to transfer heat to the gas cylinder; as well as The bottom cover, with the heating device installed inside the outer casing, is attached to the bottom of the outer casing. The gas cylinder is either a first gas cylinder or a second gas cylinder. The outer casing, when the first cover is attached, is tightly fitted to the bottom of the first gas tank, or when the second cover is attached, is tightly fitted to the bottom of the second gas tank. A heat transfer medium is filled between the bottom of the first gas tank and the outer casing, or a heat transfer medium is filled between the bottom of the second gas tank and the outer casing. The device comprises multiple concentric circular heat sinks on the outer side of the outer casing, and radial heat sinks that intersect with the circular heat sinks. The intersecting structure of the circular and radial heat sinks forms a containment space for accommodating the heat transfer medium. The first cover includes: The annular body, surrounding the edge of the outer shell, when combined with the bottom of the first gas tank, has its outer surface tightly attached to the bottom of the first gas tank to achieve water tightness; as well as A handle extends from one side of the main body.

2. The gas cylinder heater according to claim 1, wherein, The heating device includes: Printed circuit boards; A heater, connected to the printed circuit board, transfers heat to the housing; and A temperature sensor is connected to the printed circuit board.

3. The gas cylinder heater according to claim 2, wherein, The heating device also includes a bimetallic switch connected to the printed circuit board and configured to be separated from the housing. The bimetallic switch cuts off the power supply when the air temperature inside the housing is higher than a set temperature.

4. The gas cylinder heater according to claim 1, wherein, The first gas cylinder is a butane gas cylinder, the second gas cylinder is an isobutane gas cylinder, and the first and second caps are silicone caps.

5. The gas cylinder heater according to claim 1, wherein, The second cover includes: The main body has a through hole in the center, and the remaining portion, excluding the through hole, surrounds the outer shell and is configured as a curved surface that matches the bottom of the second gas tank; and A handle extends from one side of the main body.

6. The gas cylinder heater according to claim 5, wherein, The main body has multiple concentric steps in a stepped structure between the through hole and the edge, and the steps are in close contact with the bottom of the second gas tank to achieve water tightness.

Images