Folding portable gas stove

Abstract

The utility model discloses a folding portable gas stove which comprises a shell, a control valve and a gas stove head assembly, the shell is provided with an opening and closing cover, the control valve is fixed in the shell, the control valve is provided with a control end extending out of the shell, the gas stove head assembly is arranged in the shell, the gas stove head assembly is rotationally connected with the control valve and / or the shell, and after the opening and closing cover is opened, the gas stove head assembly is closed. The gas furnace end assembly rotates and moves out of the shell from the interior of the shell, and the control valve supplies gas to the gas furnace end assembly through the gas pipeline. The control valve does not need to rotate, the size of the shell is prevented from being increased, meanwhile, the size needed by rotating connection of the control valve and the gas stove head assembly is small, the requirement can be met without increasing the size of the shell, and compared with an existing folding type stove, the folding type stove is smaller in size after being folded.

Description

Technical Field

[0001] The utility model relates to the technical field of cassette stoves, in particular to a foldable cassette stove. Background Art

[0002] At present, the cassette stoves on the market can be divided into two categories. One category is that the shell, control valve and gas burner head assembly are fixed together. This type of cassette stove is large in size and inconvenient to carry. The other category is that the control valve and gas burner head assembly are folded and stored in the shell, that is, the control valve and the gas burner head assembly are fixedly connected, and the control valve and the shell are rotatably connected. In this type of cassette stove, the control valve rotates out of the shell from the side of the shell. Due to the need to meet the requirements of the installation of the control valve rotation structure and the avoidance of the control valve rotation space, the shell volume increases and cannot be further reduced. In addition, for some foldable cassette stoves, the shell has an avoidance position corresponding to the control valve and the gas burner head assembly. After folding, the control valve and the gas burner head are exposed in the avoidance position of the shell. Utility Model Content

[0003] The utility model aims to provide a foldable card stove with a small volume.

[0004] The purpose of the utility model is achieved in this way.

[0005] A foldable gas stove comprises a shell, a control valve and a gas stove head assembly. The shell is provided with an opening and closing cover, the control valve is fixed in the shell, and the control valve is provided with a control end extending out of the shell.

[0006] The gas burner head assembly is placed in the shell, and the gas burner head assembly is rotatably connected to the control valve and / or the shell. After the opening and closing cover is opened, the gas burner head assembly rotates and moves from the shell to the outside of the shell, and the control valve supplies gas to the gas burner head assembly through the gas pipeline. The control valve does not need to rotate, so as to avoid increasing the volume of the shell. At the same time, the volume required for the rotational connection between the control valve and the gas burner head assembly is small, and the demand can be met without increasing the volume of the shell. Compared with the existing folding cassette stove, the folding cassette stove of the utility model has a smaller volume after folding.

[0007] The above technical solution can be further improved as follows.

[0008] In a more specific solution, the gas pipeline includes an outlet pipeline of the control valve, an inlet pipeline of the gas burner assembly and a rotating connection device, the outlet pipeline and the inlet pipeline are connected and ventilated via the rotating connection device, and the inlet pipeline can rotate and move relative to the outlet pipeline. The gas pipeline is foldable and has a long service life.

[0009] In a more specific solution, the rotary connection device includes a fixed seat, a connecting piece and a sealing ring. The fixed seat is provided with an air supply channel. The air supply channel is provided with a first connecting hole on the bottom side of the fixed seat. The air outlet pipe is inserted into the first connecting hole for sealing connection. The air supply channel is provided with a second connecting hole on the top side of the fixed seat. The end of the air inlet pipe is provided with a rotating hole. The air inlet hole of the air inlet pipe is arranged on the side of the rotating hole. The air inlet pipe is inserted on the top of the fixed seat through the rotating hole sleeve. The connecting piece restricts the air inlet pipe to the top of the fixed seat. The air inlet pipe and the fixed seat are sealed by the sealing ring. The air inlet pipe rotates around the top of the fixed seat through the rotating hole, so that the air inlet hole is connected to the second connecting hole through the rotating hole. The rotary connection device synchronously realizes the rotation and folding of the gas burner head assembly with the control valve, the air outlet pipe and the air inlet pipe, and the structure is more compact.

[0010] In a more specific solution, the top and bottom of the fixing seat are provided with step surfaces, the end of the air inlet pipe is provided with step portions at the top and bottom of the rotating hole respectively, the air inlet hole is located between the two step portions, the connecting piece and the top surface of the fixing seat are connected and fixed, and a sealing cavity is formed between the connecting piece and the step portion at the top of the rotating hole, and between the step surface and the step portion at the bottom of the rotating hole respectively, and the sealing ring is arranged in the sealing cavity. The air outlet pipe and the air inlet pipe have good sealing performance and are safe to use.

[0011] In a more specific solution, an annular groove connected to the second connection hole is provided on the outer periphery of the fixing seat, so that the air inlet hole is always connected to the second connection hole through the rotating hole and the annular groove. The air outlet pipe and the air inlet pipe remain connected when they rotate at any angle, which is convenient for users.

[0012] In a more specific solution, a screw rod extends downward from the bottom of the fixing seat, and the screw rod passes through the outside of the housing and is threadedly connected with a nut to fix the fixing seat in the housing. The rotating connection device is fixed in position and operates stably and safely.

[0013] In a more specific solution, the housing is provided with an open opening, the opening and closing cover is rotatably connected to the housing, the opening and closing cover blocks the opening when closed, the control valve and the fixing seat are arranged in an area outside the opening of the housing, the housing is provided with an avoidance groove connected to the opening, and the gas burner head assembly rotates from the opening to the avoidance groove. The opening and closing of the opening and closing cover is not affected after the gas burner head assembly is unfolded.

[0014] In a more specific solution, the gas stove head assembly includes a stove frame, a fixed bracket and two folding brackets. The fixed bracket is fixed on the stove frame. The two folding brackets are rotatably connected to the stove frame. After the two folding brackets are unfolded, they form a triangle shape with the fixed bracket. The bottom of the folding bracket is rotatably connected with a folding foot. After the folding foot is unfolded downward, the bottom surface of the folding foot is flush with the bottom surface of the shell. After the folding foot is folded upward, the two folding brackets are rotated to both sides of the fixed bracket to fold. The folding design of the gas stove head assembly meets the use requirements and avoids the increase of the shell volume. The gas stove head assembly will not protrude from the shell after folding.

[0015] A more specific solution also includes an over-position protection device and a gas cylinder fixing device. The gas cylinder fixing device is used to fix the gas cylinder at the gas inlet end of the control valve. The trigger end of the over-position protection device is arranged on the top of the gas burner assembly near the gas inlet end. The action end of the over-position protection device is used to trigger the unlocking end of the gas cylinder fixing device. When the cooking utensil is pressed down to trigger the trigger end, the over-position protection device causes the gas cylinder fixing device to release the gas cylinder from the gas inlet end. The foldable cassette stove must be able to pass the over-position safety test and is safe to use.

[0016] In a more specific solution, the over-position protection device includes a touch rod, a spring, a connecting rod and a rocker rod. A vertical limit sleeve is provided on the side of the gas burner assembly close to the control valve. The touch rod is placed in the limit sleeve. The spring is inserted into the touch rod. The top of the spring abuts against the touch rod, and the bottom of the spring abuts against the gas burner assembly. The elastic force of the spring tends to make the touch rod extend upward from the limit sleeve. The bottom of the touch rod passes through the limit sleeve and is connected and fixed to the connecting rod. The connecting rod rises with the touch rod until it abuts against the gas burner assembly and stops. The middle part of the rocker rod is rotated and fixed to the shell or the gas burner assembly. The connecting rod is placed above one end of the rocker rod, and the other end of the rocker rod is placed below the unlocking end to form the action end. The top of the touch rod forms the trigger end. When the cooking utensil presses down the touch rod, the touch rod presses down one end of the rocker rod through the connecting rod, and the action end moves up to touch the unlocking end. The design of the over-position protection device is reasonable and simple.

[0017] The beneficial effects of the utility model are as follows.

[0018] (1) The control valve does not need to be rotated, thus avoiding increasing the volume of the shell. At the same time, the volume required for the rotational connection between the control valve and the gas burner head assembly is small, and the demand can be met without increasing the volume of the shell. Compared with the existing foldable cassette stove, the foldable cassette stove of the utility model has a smaller volume after folding.

[0019] (2) The gas pipeline is foldable and has a long service life. The outlet and inlet pipelines have good sealing properties and are safe to use. The outlet and inlet pipelines can be connected at any angle, which is convenient for users. The rotating connection device simultaneously realizes the rotation and folding of the gas burner head assembly, the control valve, the outlet and inlet pipelines, and the structure is more compact.

[0020] (3) The gas burner head assembly does not affect the opening and closing of the cover after it is unfolded. The folding design of the gas burner head assembly meets the use requirements and avoids the increase of the shell volume. The gas burner head assembly will not protrude from the shell after it is folded.

[0021] (4) The design of the over-position protection device and the gas cylinder fixing device ensures that the folding cassette furnace can definitely pass the over-position safety test and is safe to use. The over-position protection device is reasonably designed and simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of embodiment 1 (folded state).

[0023] Figure 2 This is a schematic diagram of the opening structure of the opening and closing cover of Example 1 (folded state).

[0024] Figure 3 It is a structural schematic diagram of embodiment 1 (extended state).

[0025] Figure 4 Schematic diagram of the connection structure of the control valve and the gas burner head assembly in Example 1.

[0026] Figure 5 for Figure 4 Schematic diagram of the decomposition structure.

[0027] Figure 6 for Figure 3 Schematic diagram of the cross-sectional structure of the rotating connection device and the gas pipeline.

[0028] Figure 7 for Figure 3 Schematic diagram of the cross-sectional structure of the medium-overload protection device.

[0029] Figure 8 for Figure 3 Another cross-sectional structural schematic diagram of the rotary connection device and the gas pipeline.

[0030] Fig. 9 It is a schematic diagram of the exploded structure of the control valve in Example 1.

[0031] Fig.10 This is a schematic diagram of the decomposed structure of the control valve in Example 1 (from another perspective).

[0032] Fig.11 It is a schematic diagram of the cross-sectional structure of the control valve in Example 1 (gas cylinder pulled out state).

[0033] Fig.12 It is a schematic cross-sectional structure diagram of the connection between the over-position protection device and the gas cylinder fixing device in Example 1 (gas cylinder is pulled out).

[0034] Fig.13 It is a schematic diagram of the cross-sectional structure of the control valve in Example 1 (gas cylinder pulled out state).

[0035] Fig.14 It is a schematic cross-sectional structure diagram of the connection between the over-position protection device and the gas cylinder fixing device in Example 1 (gas cylinder is pulled out). DETAILED DESCRIPTION

[0036] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0037] Example 1, see Figure 1-14As shown, a foldable gas stove includes a shell 1, a control valve 2, a gas burner head assembly 3, an over-position protection device 4 and a gas cylinder fixing device 10. The shell 1 is provided with an open mouth 11 and an opening and closing cover 12. The opening and closing cover 12 is rotatably connected to the shell 1. The opening and closing cover 12 blocks the open mouth 11 after closing. The shell 1 is provided with an avoidance groove 13 connected to the open mouth 11. The control valve 2 is fixed in the area outside the open mouth 11 in the shell 1. The control valve 2 is provided with a control end 21 extending out of the shell 1. The control end 21 of the control valve 2 controls the on-off of the internal airway of the control valve 2. In this embodiment, the control end 21 is a knob, and the control end 21 rotates counterclockwise to achieve ignition and adjust the firepower from small to large.

[0038] The gas burner head assembly 3 is placed in the housing 1, and the gas burner head assembly 3 is rotatably connected to the control valve 2. When the opening and closing cover 12 is opened, the gas burner head assembly 3 rotates and moves from the housing 1 to the outside of the housing 1, that is, the gas burner head assembly 3 rotates from the open opening 11 to the avoidance groove 13. At this time, the opening and closing cover 12 can be opened and closed at will. The control valve 2 supplies gas to the gas burner head assembly 3 through the gas pipeline 5.

[0039] The gas pipeline 5 includes an outlet pipeline 51 of the control valve 2, an inlet pipeline 52 of the gas burner head assembly 3 and a rotating connection device 53. The outlet pipeline 51 and the inlet pipeline 52 are connected for ventilation via the rotating connection device 53, and the inlet pipeline 52 can rotate and move relative to the outlet pipeline 51.

[0040] The rotating connection device 53 includes a fixed seat 54, a connecting piece 55 and a sealing ring 56. The fixed seat 54 is arranged in the housing 1 at a position corresponding to the avoidance groove 13. Step surfaces are provided at the top and bottom of the fixed seat 54, specifically, the top diameter of the fixed seat 54 is smaller than the bottom diameter of the fixed seat 54. An air supply channel 50 is provided in the fixed seat 54, and the air supply channel 50 is provided with a first connecting hole 501 on the side of the bottom of the fixed seat 54. The air supply channel 50 is provided with a second connecting hole 502 on the side of the top of the fixed seat 54, and an annular groove 541 connected to the second connecting hole 502 is provided on the outer periphery of the fixed seat 54. A screw 542 extends downward from the bottom of the fixed seat 54, and the screw 542 passes through the outside of the housing 1 and is threadedly connected to the nut 543 to fix the fixed seat 54 in the housing 1.

[0041] The outlet pipe 51 is inserted into the first connection hole 501 for sealing connection. A rotating hole 520 is provided at the end of the inlet pipe 52. The inlet hole of the inlet pipe 52 is arranged on the side of the rotating hole 520. Step portions 521 are provided at the top and bottom of the rotating hole 520 at the end of the inlet pipe 52. The inlet hole is located between the two step portions 521. The inlet pipe 52 is inserted through the rotating hole 520 and is inserted into the top of the fixing seat 54. The connecting member 55 is connected and fixed to the top surface of the fixing seat 54. A sealing cavity 522 is formed between the connecting member 55 and the step portion 521 at the top of the rotating hole 520, and between the step surface and the step portion 521 at the bottom of the rotating hole 520. The sealing ring 56 is arranged in the sealing cavity 522. The connecting member 55 restricts the air intake duct 52 to the top of the fixing seat 54. The air intake duct 52 and the air supply channel 50 of the fixing seat 54 are sealed and connected via a sealing ring 56. The air intake duct 52 rotates around the top of the fixing seat 54 via the rotating hole 520, so that the air intake hole is always connected to the second connecting hole 502 via the rotating hole 520 and the annular groove 541. The connecting member 55 is preferably a screw.

[0042] The gas burner head assembly 3 includes a stove frame 31, a fixed bracket 32 ​​and two folding brackets 33. The fixed bracket 32 ​​is fixed on the stove frame 31. The two folding brackets 33 are rotatably connected to the stove frame 31. After the two folding brackets 33 are unfolded, they are in a herringbone shape with the fixed bracket 32. The bottom of the folding bracket 33 is rotatably connected with a folding leg 34. After the folding leg 34 is unfolded downward, the bottom surface of the folding leg 34 is flush with the bottom surface of the shell 1. After the folding leg 34 is folded upward, the two folding brackets 33 are respectively rotated to both sides of the fixed bracket 32 ​​to achieve folding. A burner 35 is fixed on the stove frame 31, and the ejector pipe 36 of the burner 35 is connected to the air intake pipe 52.

[0043] The gas cylinder fixing device 10 is used to fix the gas cylinder to the air inlet end 23 of the control valve 2. The over-position protection device 4 includes a touch rod 41, a spring 42, a connecting rod 43 and a rocker rod 44. A vertical limiting sleeve 37 is provided on the side of the gas burner head assembly 3 close to the air inlet end 23 (i.e., the fixed bracket 32). The touch rod 41 is placed in the limiting sleeve 37. The spring 42 is sleeved on the touch rod 41. The top of the spring 42 abuts against the touch rod 41. The bottom of the spring 42 abuts against the gas burner head assembly 3 (i.e., the bottom plate of the fixed bracket 32). The elastic force of the spring 42 has a tendency to make the touch rod 41 extend upward from the limiting sleeve 37. The bottom of the touch rod 41 passes through the limiting sleeve 37 and is connected and fixed to the connecting rod 43. The connecting rod 43 rises with the touch rod 41 until it abuts against the gas burner head assembly 3 and stops. The middle part of the rocker rod 44 is rotated and fixed on the housing 1 or the gas burner head assembly 3. The connecting rod 43 is placed above one end of the rocker rod 44. The top of the touch rod 41 constitutes the trigger end 40 of the over-position protection device 4, and the other end of the rocker 44 is placed below the unlocking end 90 of the gas cylinder fixing device 10 to constitute the action end 45 of the over-position protection device 4. In this embodiment, the rocker 44 is rotatably fixed to one side of the fixing seat 54 through a bracket.

[0044] If the cooking utensil (i.e., too large in size) is placed too close to the control valve 2, that is, the cooking utensil is too close to the gas cylinder connected to the control valve 2, the cooking utensil will cause the gas cylinder to heat up during operation, posing a safety hazard. In the utility model, the trigger end 40 of the over-position protection device 4 is located on the side of the gas burner head assembly 3 close to the control valve 2, and the action end 45 of the over-position protection device 4 is used to trigger the unlocking end 90 of the gas cylinder fixing device 10. When the cooking utensil is pressed down to trigger the triggering end 40, the touch rod 41 presses down one end of the seesaw rod 44 through the connecting rod 43, and the action end 45 moves up to trigger the unlocking end 90. The unlocking end 90 makes the gas cylinder fixing device 10 no longer fix the gas cylinder, so that the gas cylinder is separated from the air inlet end 23 of the control valve 2, thus forcing the folding gas stove to stop working. When the cooking utensil is removed, the elastic force of the spring 42 resets the touch rod 41 and the connecting rod 43, and the gas cylinder fixing device 10 pushes the seesaw rod 44 to reset.

[0045] The design of the over-position protection device 4 that enables the gas cylinder fixing device 10 to release the gas cylinder from fixing can enable the product of the utility model to pass the over-position safety test of the European Union and Australia.

[0046] The gas cylinder fixing device 10 includes a movable sleeve 6, a clamping block 7, a linkage device 8 and a locking device 9. The movable sleeve 6 is movably arranged on the air inlet end 23 of the control valve 2 along the plugging and unplugging direction of the gas cylinder. There is at least one clamping block 7, and in this embodiment, there are three clamping blocks 7, and the clamping blocks 7 are arranged at equal intervals along the circumference of the air inlet end 23. One end of the clamping block 7 is connected to the movable sleeve 6 so that the clamping block 7 moves with the movement of the movable sleeve 6, and the first protrusion 71 and the second protrusion 72 are respectively provided on the inner and outer sides of the other end of the clamping block 7, and the first protrusion 71 and the second protrusion 72 are staggered in position, and the first protrusion 71 is closer to the direction of the gas cylinder relative to the second protrusion 72. Preferably, the movable sleeve 6 is provided with a groove 61 at the end of the clamping block 7 corresponding to the first protrusion 71 and the second protrusion 72, and the end of the clamping block 7 is placed in the groove 61.

[0047] The linkage device 8 comprises a U-shaped linkage frame 81 and a first torsion spring 80. The two ends of the open side of the U-shaped linkage frame 81 are provided with hook grooves 82. The hook grooves 82 of the two ends are arranged 180° rotationally symmetrically. The hook grooves 82 constitute the locking part of the linkage device 8. The closed side of the U-shaped linkage frame 81 is sleeved on the movable sleeve 6. The U-shaped linkage frame 81 and the movable sleeve 6 are limitedly connected to move synchronously. One end of the first torsion spring 80 abuts against the control valve 2, and the other end of the first torsion spring 80 is connected and fixed to the U-shaped linkage frame 81. The elastic force of the first torsion spring 80 makes the U-shaped linkage frame 81 move in the direction of pulling out the gas cylinder, that is, the movable sleeve 6 moves in the direction of pulling out the gas cylinder, until the first protrusion 71 moves to the outside of the end surface of the inlet end 23 and the second protrusion 72 does not protrude from the outer periphery of the movable sleeve 6. At this time, the elastic force of the first torsion spring 80 is released, and the first torsion spring 80 limits the U-shaped linkage frame 81 from continuing to move outward.

[0048] The locking device 9 includes a first locking plate 91, a second locking plate 92, a third locking plate 93 and a second torsion spring 94. The first locking plate 91, the second torsion spring 94, the second locking plate 92 and the third locking plate 93 are sequentially inserted on the control end 21 of the control valve 2. The first locking plate 91 is fixedly connected to the control valve 2, and the first locking plate 91 is provided with a positioning hole 910 for the locking portion to pass through. The second torsion spring 94 has three connecting ends. The first connecting end 941 of the second torsion spring 94 is limitedly connected to the first locking plate 91, the second connecting end 942 of the second torsion spring 94 is limitedly connected to the second locking plate 92, and the third connecting end 943 of the second torsion spring 94 passes through the central hollow part 920 of the second locking plate 92 and is limitedly connected to the third locking plate 93. The outer periphery of the second locking plate 92 is provided with notches 921 corresponding to the positioning holes 910, and the notches 921 constitute the locking portion of the locking device 9, and an unlocking end 90 extends toward the action end 45 of the over-position protection device 4. A U-shaped groove 922 is formed between the unlocking end 90 and the second locking piece 92, and the opening of the U-shaped groove 922 faces downward. A stopper 931 extends from the third locking piece 93 to one side of the U-shaped groove 922. A shifting block 22 extends from the control end 21 into the U-shaped groove 922, and the shifting block 22 is placed below the stopper 931.

[0049] The second torsion spring 94 drives the second locking piece 92 and the third locking piece 93 to rotate counterclockwise. Specifically, the elastic force of the second torsion spring 94 causes the third locking piece 93 to rotate counterclockwise until the stopper 931 presses the shifting block 22, so that the control end 21 is in the ignition-off state. At this time, the elastic force of the second torsion spring 94 disappears. The elastic force of the second torsion spring 94 causes the third locking piece 93 to rotate counterclockwise until the notch 921 and the end of the U-shaped linkage frame 81 abut against each other.

[0050] When the gas cylinder is inserted into the gas inlet end 23, the gas cylinder moves synchronously through the movable sleeve 6 and the U-shaped linkage frame 81. The movable sleeve 6 drives the clamp 7 to move, so that the first protrusion 71 of the clamp 7 moves to the outer periphery of the gas inlet end 23, so that the second protrusion 72 of the clamp 7 protrudes from the slot 61 to the outer periphery of the gas inlet end 23, and the second protrusion 72 is inserted into the inner ring groove of the gas cylinder to fix the gas cylinder. At the same time, the U-shaped linkage frame 81 moves to compress the first torsion spring 80, and the locking part of the U-shaped linkage frame 81 moves toward the locking device 9, that is, the hook groove 82 passes through the positioning hole 910, and the elastic force of the second torsion spring 94 causes the notch 921 to be inserted into the hook groove 82. The hook groove 82 and the notch 921 are mutually limited, that is, the U-shaped linkage frame 81 remains stationary, so as to keep the gas cylinder fixed.

[0051] When the action end 45 of the over-position protection device 4 moves upward to touch the unlocking end 90, that is, the third locking piece 93 rotates clockwise and compresses the second torsion spring 94, the notch 921 and the disengagement hook groove 82, the elastic force of the first torsion spring 80 causes the movable sleeve 6 and the U-shaped linkage frame 81 to synchronously move outward for a distance and stop, and the movable sleeve 6 drives the clamping block 7 to move, so that the first protrusion 71 of the clamping block 7 moves to the outside of the end surface of the air inlet end 23, so that the second protrusion 72 of the clamping block 7 retracts from the slot 61 into the outer periphery of the air inlet end 23, that is, the second protrusion 72 is separated from the inner ring groove of the gas cylinder, and the moving inertia of the movable sleeve 6 causes the gas cylinder to be ejected from the air inlet end 23. If the over-position protection device 4 is reset, the elastic force of the second torsion spring 94 drives the third locking piece 93, and the third locking piece 93 drives the rocker 44 to reset.

[0052] Or the user rotates the control end 21 clockwise to the off position, and the control end 21 continues to rotate clockwise, and the shift block 22 of the control end 21 first drives the stopper 931 to move upward, that is, the third locking piece 93 rotates clockwise, and the control end 21 continues to rotate so that the shift block 22 drives the second locking piece 92 to rotate clockwise through the U-shaped groove 922, and the notch 921 and the hook groove 82 are separated, and the elastic force of the first torsion spring 80 causes the movable sleeve 6 and the U-shaped linkage frame 81 to move outward synchronously, and the movable sleeve 6 drives the clamping block 7 to move, so that the first protrusion 71 of the clamping block 7 moves to the outside of the end surface of the air inlet end 23, and the second protrusion 72 of the clamping block 7 retracts from the slot 61 into the outer periphery of the air inlet end 23, that is, the second protrusion 72 is separated from the inner ring groove of the gas cylinder, and the moving inertia of the movable sleeve 6 causes the gas cylinder to be separated from the air inlet end 23 in a pop-up manner. The third locking piece 93 and the second locking piece 92 rotate clockwise to compress the second torsion spring 94. After releasing the hand, the second torsion spring 94 drives the third locking piece 93 and the second locking piece 92 to rotate counterclockwise, that is, the third locking piece 93 and the second locking piece 92 are reset, wherein after the third locking piece 93 is reset, the second torsion spring 94 continues to drive the third locking piece 93 to rotate, so that the control end 21 is reset to the off position. The angle difference between the rotation of the third locking piece 93 and the second locking piece 92 prevents the control end 21 from actively ejecting the gas cylinder by a slight clockwise rotation.

Claims

1. A foldable gas stove, comprising a housing (1), a control valve (2) and a gas stove head assembly (3), wherein the housing (1) is provided with an opening and closing cover (12), wherein: The control valve (2) is fixed in the housing (1), and the control valve (2) is provided with a control end (21) extending out of the housing (1). The gas burner head assembly (3) is placed in the shell (1), and the gas burner head assembly (3) is rotatably connected to the control valve (2) and / or the shell (1). After the opening and closing cover (12) is opened, the gas burner head assembly (3) rotates and moves from the inside of the shell (1) to the outside of the shell (1), and the control valve (2) supplies gas to the gas burner head assembly (3) through the gas pipeline (5); The gas pipeline (5) comprises an outlet pipeline (51) of the control valve (2), an inlet pipeline (52) of the gas burner head assembly (3), and a rotating connection device (53); the outlet pipeline (51) and the inlet pipeline (52) are connected for ventilation via the rotating connection device (53); and the inlet pipeline (52) is rotatable relative to the outlet pipeline (51).

2. The foldable card stove according to claim 1, characterized in that: The rotary connection device (53) comprises a fixed seat (54), a connecting piece (55) and a sealing ring (56); an air supply channel (50) is provided in the fixed seat (54); the air supply channel (50) is provided with a first connecting hole (501) on the bottom side of the fixed seat (54); the air outlet pipe (51) is inserted into the first connecting hole (501) for sealing connection; the air supply channel (50) is provided with a second connecting hole (502) on the top side of the fixed seat (54); a rotating hole (520) is provided at the end of the air inlet pipe (52); The air inlet hole of the pipe (52) is arranged on the side of the rotating hole (520); the air inlet pipe (52) is inserted through the rotating hole (520) onto the top of the fixing seat (54); the connecting piece (55) restricts the air inlet pipe (52) to the top of the fixing seat (54); the air inlet pipe (52) and the fixing seat (54) are sealed by a sealing ring (56); the air inlet pipe (52) rotates around the top of the fixing seat (54) through the rotating hole (520), so that the air inlet hole is connected to the second connecting hole (502) through the rotating hole (520).

3. The foldable card stove according to claim 2, characterized in that: The top of the fixing seat (54) and the bottom of the fixing seat (54) are provided with step surfaces, the end of the air intake pipe (52) is provided with step portions (521) at the top and bottom of the rotating hole (520), respectively, the air intake hole is located between the two step portions (521), the connecting piece (55) and the top surface of the fixing seat (54) are connected and fixed, and sealed cavities (522) are formed between the connecting piece (55) and the step portion (521) at the top of the rotating hole (520), and between the step surface and the step portion (521) at the bottom of the rotating hole (520), respectively, and the sealing ring (56) is arranged in the sealing cavity (522).

4. The foldable card stove according to claim 2, characterized in that: An annular groove (541) communicating with the second connecting hole (502) is provided on the outer periphery of the fixing seat (54), so that the air inlet hole is always connected to the second connecting hole (502) via the rotating hole (520) and the annular groove (541).

5. The foldable card stove according to claim 2, characterized in that: A screw rod (542) extends downward from the bottom of the fixing seat (54), and the screw rod (542) passes through the outside of the housing (1) and is threadedly connected to a nut (543) to fix the fixing seat (54) in the housing (1).

6. The foldable card stove according to claim 2, characterized in that: The shell (1) is provided with an open opening (11); the opening and closing cover (12) is rotatably connected to the shell (1); the opening and closing cover (12) blocks the open opening (11) when closed; the control valve (2) and the fixing seat (54) are arranged in an area outside the open opening (11) in the shell (1); the shell (1) is provided with an avoidance groove (13) connected to the open opening (11); and the gas burner head assembly (3) rotates from the open opening (11) into the avoidance groove (13).

7. The foldable card stove according to claim 1, characterized in that: The gas stove head assembly (3) comprises a stove frame, a fixed bracket and two folding brackets, wherein the fixed bracket is fixed to the stove frame, and the two folding brackets are rotatably connected to the stove frame. When the two folding brackets are unfolded, they form a triangle shape with the fixed bracket. The bottom of the folding bracket is rotatably connected to a folding foot. When the folding foot is unfolded downward, the bottom surface of the folding foot is flush with the bottom surface of the shell (1). When the folding foot is folded upward, the two folding brackets are respectively rotated to the two sides of the fixed bracket to achieve folding.

8. The foldable card stove according to claim 1, characterized in that: The invention also comprises an over-position protection device (4) and a gas cylinder fixing device (10), wherein the gas cylinder fixing device (10) is used to fix the gas cylinder to the gas inlet end (23) of the control valve (2), the trigger end (40) of the over-position protection device (4) is arranged on a side of the gas burner head assembly (3) close to the control valve (2), and the action end (45) of the over-position protection device (4) is used to trigger the unlocking end (90) of the gas cylinder fixing device (10). When the cooking utensil is pressed down to trigger the trigger end (40), the over-position protection device (4) causes the gas cylinder fixing device (10) to release the gas cylinder from being fixed, so that the gas cylinder is separated from the gas inlet end (23).

9. The foldable card stove according to claim 8, characterized in that: The over-position protection device (4) comprises a touch rod (41), a spring (42), a connecting rod (43) and a rocker rod (44). A vertical limiting sleeve (37) is provided on the top of the gas burner head assembly (3) near the air inlet end (23). The touch rod (41) is placed in the limiting sleeve (37). The spring (42) is sleeved on the touch rod (41). The top of the spring (42) abuts against the touch rod (41). The bottom of the spring (42) abuts against the gas burner head assembly (3). The elastic force of the spring (42) tends to cause the touch rod (41) to extend upward out of the limiting sleeve (37). The bottom of the touch rod (41) passes through the limiting sleeve (37) and the connecting rod (43). The rod (43) is connected and fixed, the connecting rod (43) rises with the touch rod (41) until it stops against the gas burner head assembly (3), the middle part of the rocker rod (44) is rotated and fixed on the housing (1) or the gas burner head assembly (3), the connecting rod (43) is placed above one end of the rocker rod (44), the other end of the rocker rod (44) is placed below the unlocking end (90) to form the action end (45), and the top of the touch rod (41) forms the triggering end (40). When the cooking utensil presses down the touch rod (41), the touch rod (41) presses down one end of the rocker rod (44) through the connecting rod (43), and the action end (45) moves up to touch the unlocking end (90).

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