Automatic ignition system for backpack-style stoves

Abstract

A portable stove and a burner for the portable stove are provided. The portable stove may have a wind guard for protecting the flame of the burner of the portable stove. The wind guard may include an elastic arched member and a plurality of legs attached to the elastic arched member for attaching the wind guard to the cooking pot of the portable stove. The burner may have an igniter having an active configuration and an inactive configuration. A rotatable control knob can control the operation of a fuel flow control valve and the igniter. An ignition lever is interposed between the control knob and the igniter, and the ignition lever is interposed such that rotation of the control knob from the ON position to the ignition position moves the ignition lever from the released position to the operating position, and the igniter moves from the inactive configuration to the active configuration.

Description

Technical Field

[0001] The present invention generally relates to portable stoves, particularly backpack stoves, and to burners of portable stoves and flame protection of burners.

Background Art

[0002] Portable stoves are used for many purposes when performing outdoor activities such as camping, hiking, and trail gating. Portable stoves can be used for many purposes such as boiling water and cooking food.

[0003] Portable stoves typically include a fuel source and a burner for burning fuel to generate heat. A cooking pot can be placed above the burner such that its heat generation heats the contents of the cooking pot.

[0004] An ignition system can be provided to ignite the fuel in the burner. In order to avoid misfiring of the burner, it is desirable to create a user-friendly or simplified ignition system.

[0005] Furthermore, by protecting the flame of the burner, the performance of the burner can be improved. By protecting the flame, misrecognition of the flame, uneven heating, and inefficient heating can be prevented.

[0006] To protect the flame, a wind guard can be employed that at least partially protects the flame from excessive wind. Installing a wind guard can be dangerous. Depending on the positioning of the wind guard, the wind guard can also provide an opportunity to overheat the area of the cooking pot where the exhaust gas is trapped and / or overheat the fuel canister. Furthermore, in burners that can use multiple cooking pots, the sizes of the cooking pots vary. Therefore, conventional burner-mounted or floor-mounted wind guards are difficult and often not very desirable from a safety perspective.

[0007] This application brings about improvements to the current state of portable stoves, particularly portable stoves including an integrated cooking pot, and burners for portable stoves. [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] This application provides a novel and improved portable stove that brings about improvements to the ignition system and to the protection of the flame generated by the stove burner. [Means for solving the problem]

[0009] In one example, a burner for a portable camping stove is provided. The burner includes an igniter, a control knob, an ignition lever, and a fuel control valve. The igniter has an active configuration in which a spark is generated by the igniter, and an inactive configuration in which no spark is generated. The spark can be used to ignite the fuel and generate heat. The control knob is rotatable about a first axis between an off position and an ignition position. The control knob has a first on position which is rotationally interposed between the off position and the ignition position. An ignition lever is interposed between the control knob and the igniter. The ignition lever moves the igniter from the inactive configuration to the active configuration when rotated about a second axis which is not parallel to the first axis, between an open position and an operating position. A fuel flow control valve is operably coupled to the control knob. The fuel flow control valve is in the off configuration when the control knob is in the off position, in the first on configuration when the control knob is in the first on position, and in the ignition configuration when the control knob is in the ignition position. When the control knob moves from the first on position to the ignition position, the ignition lever moves from the release position to the operating position. Therefore, the control knob controls both the setting of the fuel flow control valve and the operation of the igniter by the angular position of the control knob around the first axis.

[0010] In one example, when in the operating position, the biasing member biases the ignition lever from the operating position to the release position, and when no external force is applied to the knob that biases the knob toward the ignition position, the biasing provided by the biasing member biases the ignition lever and the knob toward the release position and the first ON position, respectively.

[0011] In one example, the biasing member is a spring.

[0012] In one example, the biasing member is a spring placed inside the igniter.

[0013] In one example, no biasing force is applied to the control knob when it is positioned angularly in the off position, the first on position, or between the off position and the first on position.

[0014] In one example, an external force is required to move the control knob to the ignition position and to maintain the control knob in the ignition position.

[0015] In one example, the control knob has a first contact portion that engages with a second contact portion of the ignition lever when the control knob moves from a first ON position to an ignition position.

[0016] In one example, when the control knob rotates from the first ON position to the ignition position, the first contact portion rotates about the first axis, causing the second contact portion to rotate about the second axis.

[0017] In one example, the fuel flow control valve allows at least the same amount of fuel flow in the first ON configuration as in the ignition configuration.

[0018] In another example, a portable stove includes a burner, a cooking pot, and a wind guard. The cooking pot can be positioned above the burner. The cooking pot includes a storage pot having an annular wall and a bottom wall defining a cooking chamber. The cooking pot includes an annular skirt extending from the storage pot. The skirt has a plurality of radially directed flow ports for venting exhaust from the burner. The wind guard is detachably attached to the annular skirt, overlapping the plurality of radially directed flow ports perpendicularly. The wind guard has a curved windshield formed from spring metal. A plurality of radially inwardly extending legs are configured to attach the wind guard to the skirt such that the curved windshield is radially outward from the skirt.

[0019] In one example, multiple mounting slots are formed within the skirt. Each of the multiple radially extending legs extends into the corresponding mounting slot when the wind guard is attached to the skirt.

[0020] In one example, a curved windshield has a first radial dimension when it is relaxed, and this first radial dimension is smaller than a second radial dimension when the windshield is extended while attached to the skirt of the wind guard.

[0021] In one example, the annular wall of the storage pot has an inner diameter of a third radial dimension that is larger than the first radial dimension, so that the arched windshield can be fully inserted into the storage pot in a relaxed state.

[0022] In one example, the arched windshield can be elastically compressed into a compressed state such that it has a third radial dimension smaller than when the arched windshield is in a relaxed state. The annular wall of the storage pot has an inner diameter of a fourth radial dimension smaller than the second radial dimension. The third radial dimension is smaller than the fourth radial dimension so that the arched windshield can be fully inserted into the storage pot in a compressed state.

[0023] In one example, the leg extends into the slot as it transitions from the extended state to the relaxed state.

[0024] In one example, each leg has an insertion portion that extends radially inward and a contact portion that is radially offset. The contact portion is positioned radially outward from the insertion portion and is angularly offset from the insertion portion. The insertion portion is received within the corresponding mounting slot while the contact portion contacts the outer periphery of the skirt radially as the window guard is attached to the skirt.

[0025] In one example, the cooking pot includes a heat flux ring location adjacent to the bottom wall outside the storage pot. The annular skirt surrounds the heat flux ring.

[0026] Other aspects, objects, and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0027] The accompanying drawings, which are incorporated herein and form a part of this specification, illustrate some aspects of the present invention and, together with the description, serve to explain the principles of the present invention.

Brief Description of the Drawings

[0028] [Figure 1] Perspective view of the portable stove according to the present application. [Figure 2] Exploded perspective view of the portable stove of FIG. 1. [Figure 3] Perspective view of the burner of the portable stove of FIG. 1 in the ignition configuration. [Figure 4] Partial perspective view of the burner of FIG. 3 in the ignition configuration. [Figure 5] Cross-sectional view of the burner of FIG. 3 in the ignition configuration. [Figure 6] Perspective view of the burner of the portable stove of FIG. 1 in the cooking configuration between the off configuration and the ignition configuration. [Figure 7] Cross-sectional perspective view of the burner in the configuration shown in FIG. 6. [Figure 8] This is a cross-sectional view of the burner in the configuration shown in Figure 6. [Figure 9] This is a cross-sectional view of the burner of the portable stove shown in Figure 1 in the off configuration. [Figure 10] Figure 1 is an exploded view of the cooking pot and wind guard of the portable stove. [Figure 11] Figure 1 is a perspective view of the cooking pot and wind guard of the portable stove in a configuration with the wind guard attached. [Figure 12] Figure 11 is a perspective view of the cooking pot and wind guard configured so that the wind guard is inserted into the cooking pot. [Figure 13] Figure 1 shows a cross-sectional view of the portable stove in its package configuration, where the stove components are inserted into the cooking pot of the portable stove, and also includes the cup attached to the cooking pot around the annular skirt of the cooking pot. [Modes for carrying out the invention]

[0029] While the present invention will be described in relation to certain preferred embodiments, it is not intended to limit the invention to those embodiments. Rather, the intention is to cover all alternatives, modifications, and equivalents that fall within the spirit and scope of the invention as defined by the appended claims.

[0030] Figures 1 and 2 show a portable stove 100, which generally includes a cooking pot 102, a burner 104, a wind guard 106, and a fuel canister 108. Figure 1 shows the portable stove 100 in its assembled state, while Figure 2 shows the portable stove 100 in its disassembled state. The portable stove 100 is configured such that the illustrated components as a whole can be packed into the cooking pot 102 for storage and transport.

[0031] Referring to Figures 3 to 9, the operation of the burner 104, and in particular the ignition system for igniting the burner 104, is shown.

[0032] The control knob 120 controls a fuel flow control valve 122, which adjusts the amount of heat generated by the burner 104, by adjusting the fuel flow rate through the system. The control knob 120 is rotatable about the knob axis 124 to adjust the fuel flow control valve 122 between the off position 126, the high position 128, and the ignition position 130. In this example, the high position 128 is angularly between the off position 126 and the ignition position 130.

[0033] The knob 120 includes an indicator 132 that aligns with the corresponding indicators for positions 126, 128, and 130. Note that the control knob 120 may be positioned in an intermediate position between the off position 126 and the high position 128 to further fine-tune the temperature output of the burner 104.

[0034] The ignition system includes an igniter 134 used to generate a spark for igniting the burner 104. The igniter 134 includes a generator 136 operationally coupled to an electrode 138. A spark is formed between the electrode 138 and the burner cup 140 of the burner 104.

[0035] In some examples, the generator 136 is an electric generator (e.g., a generator with a power source such as a battery) such that when the switch lever 144 is pressed (as shown in Figure 3) and the generator is moved from the inactive position to the active position, an electrical pulse is sent to the electrode 138 to generate a spark. In other examples, a piezoelectric generator could be used.

[0036] The generator 136 is operably operated by the control knob 120 to generate electrical pulses that are sent to the electrodes 138. In particular, when the control knob 120 is turned to the ignition position 130, the generator 136 is put into an active configuration by operably pushing down the switch lever 144 so that electrical pulses can be sent to the electrodes 138. Thus, the control knob 120 is used to control both the position of the control valve and the operation of the igniter 134.

[0037] When using a battery-powered generator, the igniter 104 will continue to generate a spark via the electrode 138 as long as the switch lever 144 is pressed down.

[0038] An ignition lever 148 is movably interposed between the control knob 120 and the switch lever 144 in order to operate the switch lever 144. The ignition lever 148 engages with the control knob 120 and the switch lever 144, transitioning the igniter 134 from an inactive configuration to an active configuration.

[0039] The ignition lever 148 rotates around the lever axis 150. In this embodiment, the lever axis 150 is not parallel to the knob axis 124. In a preferred example, the lever axis 150 is perpendicular to the knob axis 124.

[0040] The ignition lever 148 converts the rotational motion of the knob 120 around axis 124 into rotational motion of the ignition lever 148 around axis 150, which in turn converts into linear motion of the switch lever 144 along axis 154.

[0041] The control knob 120 has a first contact portion 155 that faces at an angle around the axis 124 and engages with a second contact portion 158 of the first arm 156 of the ignition lever 148. The engagement between the first and second contact portions 155, 158 allows for sliding contact between them. The first contact portion is provided by a projection 157 that extends rearward.

[0042] The projection 157 and the corresponding first contact portion 155 are radially offset from the axis 124.

[0043] The ignition lever 148 has a second arm 160 having a third contact portion 162 that engages with a fourth contact portion 164 of the switch lever 144. In this example, the engagement between the third and fourth contact portions 162 and 164 allows for sliding contact between them.

[0044] In this example, the first and second contact portions 155 and 158 engage at a vertical position higher than the vertical position in which the third and fourth contact portions 162 and 164 engage.

[0045] The first and second arms 156, 160 are radially extending members that, when viewed along the axis 150, form an overall L-shaped contour. Preferably, the first and second arms 156, 160 extend from each other at an angle of 45 to 135 degrees, preferably about 90 degrees.

[0046] In Figures 3 to 5, the ignition lever 148 is in the operating position where the switch lever 148 maintains the igniter 134 in an active configuration (for example, a state in which a spark is generated).

[0047] Figures 6 to 8 show the ignition lever 148 in the released position, which allows the ignition to transition to an inactive configuration (e.g., a state in which no spark is generated). In a preferred embodiment, a biasing force is movably applied to the ignition lever 148, movably biasing it from the operating position to the released position. Thus, the user must apply a force to the control knob 120 that overcomes this biasing force by rotating the control knob 120 from the high position to the ignition position, thereby transitioning it from the released position to the operating position. This external force applied to the knob 120 is indicated by arrow 170. When this force 170 is removed, the biasing force causes the ignition lever 148 to rotate around axis 150, as indicated by arrow 172.

[0048] Preferably, the switch lever 144 also transitions from an active configuration to an inactive configuration by sliding along the axis 154 as indicated by the arrow 174 when the force 170 is released.

[0049] In one example, the biasing member provides a biasing force that biases the ignition lever 148 in the direction of arrow 172. In one particular example, the biasing force is provided by a spring 176 located within the igniter 134 that biases the switch lever from an active configuration to an inactive configuration. Thus, the igniter 134 is a normally open device (e.g., normally inactive).

[0050] This biasing force and the rotation of the ignition lever 148, indicated by arrow 172, also cause the control knob 120 to rotate, as indicated by arrow 178. This causes the control knob 120 to rotate from the ignition position 130 to the high position 128 (as shown in Figures 6 to 8). In particular, the spring force is transmitted from the fourth contact portion 164 to the third contact portion 162, causing the ignition lever 148 to rotate around the axis 150, as indicated by arrow 172. This motion causes the second contact portion 158 to exert force on the first contact portion 155, causing the control knob 120 to rotate around the axis 124. Therefore, when the control knob 120 is released from the ignition position (for example, when the burner 104 is ignited), the system automatically moves to the high position 128.

[0051] At that point, the system / control knob 120 is in a steady state, and the biasing force provided by the biasing member no longer acts on the knob 120 or does not provide enough force to continue rotating the knob 120 toward the off position 126. The user can then adjust the thermal output of the fuel flow valve 122 and burner 104 by applying further force to the knob 120 in the direction of arrow 178 to rotate it toward the off position 126.

[0052] If the force of spring 176 is not sufficient to automatically transition from the ignition position / active configuration to the high position / inactive configuration, a separate spring can be added to act on the ignition lever 148 and / or knob 120.

[0053] When the piezoelectric igniter 134 is used, if several sparks are required to ignite the burner 104, the user may have to turn the control knob 120 to the ignition position and then release it several times.

[0054] Again, when the knob 120 moves from the high position 128 to the ignition position 130, the control knob 120 begins to move the ignition lever 148 from the open position to the active position, thereby moving the igniter 134 from the inactive configuration to the active configuration. An external force is required to maintain the knob 120 in the ignition position and to maintain the igniter 134 in the active configuration.

[0055] The high position 128 can be considered the ON position because, in this position, the valve is in a position that allows fuel flow and the burner 134 is operable. In the OFF position, the fuel flow is stopped by the valve.

[0056] Figure 9 shows the knob 120 rotated to the off position. In particular, the first contact portion 155 is no longer engaged with the second contact portion 158. However, due to this relationship, the second contact portion 158 is in the same position as when the knob 120 is in the high position, as shown in Figure 8.

[0057] Referring first to Figures 1 and 2, the portable stove 100 further includes a wind guard 106 that surrounds and vertically overlaps the annular skirt 182 of the cooking pot 102. In particular, the wind guard 106 overlaps with the flow port 186 formed through the annular skirt 182. The annular skirt 182 hangs down from the storage pot 184 of the cooking pot 102.

[0058] The airflow port 186 allows air to flow under the bottom of the cooking pot 102, enabling the cooking pot 102 to be heated.

[0059] The storage pot 184 includes a bottom wall 185 and an annular side wall 187 defining the cooking chamber 186 (see also Figure 10). The annular skirt 182 extends downward below the bottom wall of the storage pot 184. Furthermore, a flux ring 188 may be provided within the annular skirt 182 adjacent to the bottom wall. However, the flux ring 188 is not required in all embodiments. Combustion gases from the burner 104 flow through the flux ring 188 and exit through the flow port 186.

[0060] The wind guard 106 covers part or all of the flow port 186, thereby restricting the airflow that may be blown through the flow port 186 into the burner 104, which could interfere with the proper, efficient, and / or consistent combustion and / or heating of the cooking pot 102.

[0061] The wind guard 106 includes a curved windshield 190 formed from an elastic material such as spring metal, particularly spring steel. Multiple mounting legs 192 extend radially inward from the windshield 190 to operably mount the wind guard 106 to the skirt 182. In this example, the legs 192 are riveted to the windshield 190, but they may be attached by other means such as screws, welding, integral molding with the windshield 190, or adhesive. For example, the legs may be formed as continuous pieces of the material of the windshield 190 and then simply bent radially inward to form standoffs for spacing the windshield 190 radially outward from the skirt 182.

[0062] Referring further to Figures 10 and 11, the leg portion 192 cooperates with a corresponding mounting slot 194 formed within the annular skirt 182. In this example, when mounted, the leg portion 192 extends radially within the mounting slot 194. The leg portion 192 includes a pair of radially inwardly extending projections 196 that are angularly separated by a gap 198, and a contact portion 200 that extends angularly between the projections 196.

[0063] As shown in Figure 11, a pair of projections 196 extend within angularly spaced mounting slots 194, and the contact portion 200 radially contacts the outer circumference of the annular skirt 182, particularly a portion 202 positioned between the spaced mounting slots 194. The portion 202 is radially received within a gap 198. In other examples, only a single projection may be provided by the leg portion.

[0064] In one example, the windshield 190 is sized such that, in its relaxed state, the innermost part of the leg portion 192 does not extend beyond the outer circumference of the skirt 182. Therefore, in order to mount the wind guard 106, the windshield 190 must be elastically bent so that its inner diameter expands, allowing the leg portion 192 to slide axially along / beyond the outer circumference of the skirt 182 and align with the mounting slot 194. Once aligned, the windshield 190 can be released, and it elastically returns to its relaxed state, allowing the leg portion 192 to extend within the mounting slot 194.

[0065] In one example, the windshield 190 is sized such that it does not fully return to its slack state when mounted on the skirt 182 with the leg portion 192 radially inserted into the slot 194, in order to provide a tight engagement between the wind guard 106 and the skirt 182. However, in other examples, the relative sizes of the wind guard 106 and the skirt 182 may be such that the windshield 190 can return to its slack state when the leg portion 192 is inserted into the mounting slot 194.

[0066] One configuration of the legs 192 and mounting slots 194 is provided, but other shapes and sizes are possible. Furthermore, the mounting slots 194 do not need to extend through the skirt 182, and the mounting slots 194 may be recesses or grooves formed within the skirt, for example, by radial deformation of the skirt 182. Furthermore, three legs 192 are shown, but more or fewer legs are possible. In some examples, the engagement of the legs 192 and the mounting slots 194 prevents the wind guard 106 from rotating about the central axis of the cooking pot 184 when mounted.

[0067] Referring further to Figure 13, the windshield 190 is configured to be fully inserted into the storage chamber 186 of the cooking pot 184 for storage when the portable stove 100 is not in use or during transport. In one example, the windshield 190 has an outer diameter smaller than the inner diameter of the cooking pot 184 when in a relaxed state. In an alternative example, the windshield 190 may have a relaxed state in which the windshield 190 has a radius larger than the inner diameter of the cooking pot 184. However, in this example, the windshield 190 may be elastically compressed radially to have a radius smaller than the inner diameter of the cooking pot 184 so that it can be stored inside the cooking pot.

[0068] All references cited herein, including publications, patent applications, and patents, are incorporated herein by reference to the same extent as they are incorporated herein in whole, provided that each reference is individually and specifically indicated as being incorporated herein by reference.

[0069] In the context describing the present invention (particularly in the context of the following claims), the terms “a,” “an,” and “the,” and similar reference subjects, should be interpreted as encompassing both singular and plural, unless otherwise indicated herein or unless clearly inconsistent with the context. The terms “equip,” “have,” “include,” and “contain,” should be interpreted as non-exclusive unless otherwise specified (i.e., “include, but not limited to”). The enumeration of value ranges herein is intended merely as a simple way to refer individually to each distinct value contained within the range, unless otherwise indicated herein, and each distinct value is incorporated herein as if it were individually enumerated herein. All methods described herein may be performed in any preferred order, unless otherwise indicated herein or unless clearly inconsistent with the context. The use of any examples or exemplary language provided herein (e.g., “etc.”) is intended merely to better illustrate the present invention and does not limit the scope of the invention unless specifically asserted. No language in this specification should be construed as indicating that any non-claimed element is essential for the practice of the invention.

[0070] Preferred embodiments of the Invention, including the best mode known to the inventors for carrying out the Invention, are described herein. Variations of these preferred embodiments will be apparent to those skilled in the art by reading the foregoing description. The inventors expect that those skilled in the art will appropriately adopt such variations, and the inventors intend that the Invention may be carried out in ways other than those specifically described herein. Accordingly, the Invention includes all modifications and equivalents of the subject matter enumerated in the appended claims, as permitted by applicable law. Furthermore, unless otherwise indicated herein, or unless clearly inconsistent with the context, any combination of the elements described above in all possible variations thereof is incorporated into the Invention.

Claims

1. An igniter having an active configuration in which a spark is generated by the igniter, and an inactive configuration in which no spark is generated, A control knob rotatable about a first axis between an off position and an ignition position, wherein the control knob has a first on position that is rotationally interposed between the off position and the ignition position. An ignition lever interposed between the control knob and the igniter, wherein when the ignition lever is rotated between a release position and an operating position about a second axis that is not parallel to the first axis, the igniter transitions from the inactive configuration to the active configuration. A fuel flow control valve operably coupled to the control knob, wherein the fuel flow control valve is in an off configuration when the control knob is in the off position, in a first on configuration when the control knob is in the first on position, and in an ignition configuration when the control knob is in the ignition position, Equipped with, When the control knob moves from the first ON position to the ignition position, the ignition lever moves from the release position to the operating position, and the rotation of the control knob causes the ignition device to operate. A burner for a portable camping stove.

2. The burner according to claim 1, further comprising a biasing member that biases the ignition lever from the operating position toward the release position when the ignition lever is in the operating position, wherein the biasing member causes the ignition lever and the knob to move toward the release position and the first ON position, respectively, when no external force is applied to the knob that biases the knob toward the ignition position.

3. The burner according to claim 2, wherein the biasing member is a spring.

4. The burner according to claim 3, wherein the biasing member is a spring disposed within the igniter.

5. The burner according to claim 2, wherein the biasing member does not provide a biasing force to the control knob when the control knob is positioned angularly in the off position, the first on position, or between the off position and the first on position.

6. The burner according to claim 1, wherein an external force is required to move the control knob to the ignition position and to maintain the control knob in the ignition position.

7. The burner according to claim 1, wherein the control knob has a first contact portion that engages with a second contact portion of the ignition lever when the control knob moves from the first ON position to the ignition position.

8. The burner according to claim 7, wherein the first contact portion rotates the second contact portion about the second axis when the first contact portion rotates about the first axis when the control knob rotates from the first ON position to the ignition position.

9. The burner according to claim 1, wherein the fuel flow control valve allows the same amount of fuel flow as the ignition configuration in the first ON configuration.

10. Burner and, A cooking pot that can be removably positioned above the burner, A storage pot having an annular wall and a bottom wall that define the cooking chamber, An annular skirt extending from the storage pot, having a plurality of radially oriented flow ports for passing exhaust from the burner and A cooking pot having, A wind guard that can be detachably attached to the annular skirt so as to overlap perpendicularly with the plurality of radially oriented flow ports, A curved windshield formed from spring metal, The wind guard is configured to be attached to the skirt with the arched windshield spaced radially outward from the skirt, and comprises a plurality of legs extending radially inward, A wind guard and A portable stove equipped with [features / equipment].

11. The portable stove according to claim 10, wherein a plurality of mounting slots are formed in the skirt, and each of the plurality of legs extending radially inward extends into the corresponding mounting slot when the wind guard is attached to the skirt.

12. The portable stove according to claim 10, wherein the arched windshield has a first radial dimension when in a relaxed state, and the first radial dimension is smaller than the second radial dimension of the wind guard when the windshield is in an extended state when attached to the skirt.

13. The portable stove according to claim 12, wherein the annular wall of the storage pot has an inner diameter of a third radial dimension that is larger than the first radial dimension, such that the arched windshield can be fully inserted into the storage pot in the relaxed state.

14. The arched windshield is elastically compressible to a compressed state such that the arched windshield has a third radial dimension smaller than that when the arched windshield is in the relaxed state. The portable stove according to claim 12, wherein the annular wall of the storage pot has an inner diameter of a fourth radial dimension smaller than the second radial dimension, and the third radial dimension is smaller than the fourth radial dimension so that the bow-shaped windshield can be fully inserted into the storage pot in the compressed state.

15. The portable stove according to claim 12, wherein the leg portion extends into a mounting slot formed in the skirt when transitioning from the extended state to the relaxed state.

16. The portable stove according to claim 10, wherein each leg portion has an insertion portion extending radially inward and a contact portion offset radially, the contact portion being positioned radially outward from the insertion portion, and the insertion portion is received in a corresponding mounting slot while the contact portion radially contacts the outer circumference of the skirt when the wind guard is attached to the skirt.

17. The portable stove according to claim 10, wherein the cooking pot includes a heat flux ring position adjacent to the bottom wall on the outside of the storage pot, and the annular skirt surrounds the heat flux ring.

18. The portable stove according to claim 10, wherein the wind guard remains with the cooking pot when the cooking pot is removed from the burner.

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