Smokeless heating stove

Abstract

The present invention discloses a smokeless heating stove, which relates to the technical field of heating stoves. The stove comprises an outer tube, an inner tube positioned within the outer tube, and an outer flange positioned at the upper end of the inner tube. The outer flange rests on the upper end of the outer tube, a main air inlet is provided circumferentially at the lower end of the outer tube, an upper air inlet is provided circumferentially at the upper end of the inner tube, and a lower air inlet is provided at the bottom of the inner tube. The present invention has the beneficial effects of producing less smoke and simultaneously having the functions of a grill and a barbecue.

Description

Technical Field

[0001] The invention belongs to the technical field of heating stoves, and in particular relates to a smokeless heating stove. Background Art

[0002] The fuel inside the existing heating stove is not fully burned, which often generates a lot of white smoke and affects people's health. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art and to provide a smokeless heating stove.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A smokeless heating stove comprises an outer tube, an inner tube located inside the outer tube, and an outer flange located at the upper end of the inner tube; the outer flange is placed on the upper end of the outer tube, a total air inlet is circumferentially provided at the lower end of the outer tube, an upper air inlet is circumferentially provided at the upper end of the inner tube, and a lower air inlet is provided at the bottom of the inner tube.

[0006] Preferably, the bottom of the outer cylinder is provided with supporting feet.

[0007] Preferably, the main air inlets are arranged in a circular array with the axis of the outer cylinder as the center.

[0008] Preferably, the upper air inlets are arranged in a circular array with the axis of the inner cylinder as the center.

[0009] Preferably, the outer cylinder and the outer flange are an integrally formed structure.

[0010] Preferably, the height of the main air inlet is lower than the height of the lower air inlet.

[0011] Preferably, an ash receiving pan is provided at the bottom of the outer cylinder for receiving ash falling from the bottom of the inner cylinder.

[0012] Preferably, a guide cylinder is fixedly connected to the opposite sides of the outer cylinder, and a through-hole is provided on the opposite sides of the outer flange. A support rod is inserted into the guide cylinder, and the support rod passes through the through-hole. The inner wall of the guide cylinder is provided with three parallel guide grooves, which divide the guide grooves into a first guide groove, a second guide groove, and a third guide groove. A transition groove is provided at the upper end of the guide cylinder, and the upper end of the guide groove is connected to the transition groove. The length of the first guide groove is longer than the length of the second guide groove and the second guide groove. A slider is fixed to the support rod, and the slider is slidably connected in one of the guide grooves. A rotating seat is passed through the upper end of the support rod, and the rotating seat is rotatably connected to the upper end of the support rod. A rotating groove is provided at one end of the rotating seat, and a receiving groove is provided on one side of the support rod. A rotating rod is provided in the receiving groove, and the upper end of the rotating rod is hinged. In the rotating groove, the hinged end of the rotating rod is provided with a spring for driving the rotating rod to rotate to a horizontal state. The above-mentioned heating stove also includes a fork for connecting food and a grilling mesh plate for placing food; the fork includes a connecting shaft and a needle fixed to the connecting shaft; one end of the connecting shaft is provided with a socket for inserting the rotating rod, and the other end is provided with a threaded hole for threaded connection with the rotating rod, and the socket and the threaded hole are coaxial; when the slider is located at the lower end of the first guide groove, the upper end of the support rod is located above the outer flange; when the sliders of the support rods on opposite sides of the inner tube are both located in the second guide groove, the unfolded rotating rods are located in a straight line; when the sliders of the support rods on opposite sides of the inner tube are both located in the third guide groove, the unfolded rotating rods are parallel to each other.

[0013] Preferably, the needle is L-shaped.

[0014] Preferably, the needle is made of stainless steel.

[0015] Preferably, the rotating rod is made of stainless steel.

[0016] The beneficial effects of the present invention are: less smoke, and simultaneous grilling and barbecue functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of Example 1;

[0018] Figure 2 Schematic diagram of Example 2;

[0019] Figure 3 for Figure 2 A magnified view of point A;

[0020] Figure 4 for Figure 3 BB cross-sectional view;

[0021] Figure 5 A schematic diagram of pulling the support rod upward;

[0022] Figure 6 for Figure 5 CC cross-sectional view;

[0023] Figure 7 A schematic diagram of the slider rotating to the second guide groove;

[0024] Figure 8 A schematic diagram of inserting the rotating rod into the socket;

[0025] Figure 9 is a schematic diagram of the slider moving to the lower end of the second guide groove;

[0026] Figure 10 It is a schematic diagram when the slider rotates to the upper end of the third guide groove;

[0027] Figure 11 It is a schematic diagram when the slider rotates to the upper end of the third guide groove;

[0028] Figure 12 A top view showing the rotating rods being parallel to each other;

[0029] Figure 13 Schematic diagram of the grilling grid after being placed on the rotating rod.

[0030] In the figure: outer cylinder 1, inner cylinder 2, ash tray 3, outer flange 4, main air inlet 5, upper air inlet 6, lower air inlet 7, support leg 8, guide cylinder 9, perforation 10, support rod 11, first guide groove 12, second guide groove 13, third guide groove 14, transition groove 15, slider 16, rotating seat 17, rotating groove 18, accommodating groove 19, rotating rod 20, connecting shaft 21, needle 22, jack 23, threaded hole 24, barbecue mesh plate 25. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0032] Example 1:

[0033] See also Figure 1 A smokeless heating stove comprises an outer cylinder 1, an inner cylinder 2 located inside the outer cylinder 1, and an outer flange 4 located at the upper end of the inner cylinder 2;

[0034] The outer flange 4 is placed on the upper end of the outer tube 1. The lower end of the outer tube 1 is circumferentially provided with a total air inlet 5. The upper end of the inner tube 2 is circumferentially provided with an upper air inlet 6. The bottom of the inner tube 2 is provided with a lower air inlet 7.

[0035] The bottom of the outer cylinder 1 is provided with a support foot 8 .

[0036] The main air inlets 5 are arranged in a ring array with the axis of the outer tube 1 as the center.

[0037] The upper air inlets 6 are arranged in a circular array with the axis of the inner tube 2 as the center.

[0038] An ash receiving pan 3 is provided at the bottom of the outer cylinder 1 for receiving the ashes dropped from the bottom of the inner cylinder 2 .

[0039] The outer cylinder 1 and the outer flange 4 are an integrally formed structure.

[0040] The height of the main air inlet 5 is lower than the height of the lower air inlet 7 .

[0041] Principle of the embodiment:

[0042] The heating stove can use combustible wood or biomass pellets. During use, the combustible wood or biomass pellets are placed within the inner tube and ignited through the upper opening. Cool air (oxygen) enters through the main air inlet 5 at the lower end of the outer tube. This cool air enters between the outer and inner tubes, with some reaching the fuel through the lower air inlet 7 to aid combustion. After the topmost combustible wood or biomass pellets burn for several minutes, a high-temperature carbonized layer forms on the fuel's upper surface, inhibiting further combustion. The bottom layer, isolated from the combustion-supporting air (oxygen), undergoes a process similar to dry distillation at high temperatures, vaporizing carbon monoxide (CO) or wood gas. This gas rises from the uppermost carbonized layer. The cool air entering through the main air inlet 5 rises along the entire outer wall of the inner tube and enters the inner tube through the upper air inlet 6. There, it combines with the rising CO or wood gas to form a secondary, complete combustion, producing CO2 and water vapor. This combustion process similar to dry distillation continues until the fuel at the bottom is burned out. Finally, all that remains in the inner tube are burned ashes, which fall into the ash tray through the lower air inlet 7. When cleaning, the inner tube is removed from the outer tube, the ash tray is removed and the ashes are poured out to complete the cleaning.

[0043] Example 2:

[0044] See also Figures 2 to 13 A smokeless heating stove comprises an outer cylinder 1, an inner cylinder 2 located inside the outer cylinder 1, and an outer flange 4 located at the upper end of the inner cylinder 2;

[0045] The outer flange 4 is placed on the upper end of the outer tube 1. The lower end of the outer tube 1 is circumferentially provided with a total air inlet 5. The upper end of the inner tube 2 is circumferentially provided with an upper air inlet 6. The bottom of the inner tube 2 is provided with a lower air inlet 7.

[0046] The outer cylinder 1 is fixed with guide cylinders 9 on opposite sides, and the outer flange 4 is provided with through holes 10 on opposite sides. A support rod 11 is inserted into the guide cylinder 9, and the support rod 11 passes through the through hole 10. The inner wall of the guide cylinder 9 is provided with three mutually parallel guide grooves, which are divided into a first guide groove 12, a second guide groove 13, and a third guide groove 14. A transition groove 15 is provided at the upper end of the guide cylinder 9, and the upper end of the guide groove is connected to the transition groove 15. The length of the first guide groove 12 is longer than the length of the second guide groove 13 and the second guide groove 13. A slider 16 is fixed to the support rod 11. , the slider 16 is slidably connected in one of the guide grooves, the upper end of the support rod 11 passes through a rotating seat 17, the rotating seat 17 and the upper end of the support rod 11 are rotatably connected, one end of the rotating seat 17 is provided with a rotating groove 18, one side of the support rod 11 is provided with a receiving groove 19, a rotating rod 20 is provided in the receiving groove 19, the upper end of the rotating rod 20 is hinged in the rotating groove 18, and the hinged end of the rotating rod 20 is provided with a spring for driving the rotating rod 20 to rotate to a horizontal state. The above-mentioned heating stove also includes a fork for connecting food and a grilling mesh plate 25 for placing food.

[0047] The fork includes a connecting shaft 21 and a needle 22 fixed to the connecting shaft 21;

[0048] One end of the connecting shaft 21 is provided with a socket 23 for inserting into the rotating rod 20, and the other end is provided with a threaded hole 24 for threaded connection with the rotating rod 20, and the socket 23 and the threaded hole 24 are coaxial;

[0049] When the slider 16 is located at the lower end of the first guide groove 12, the upper end of the support rod 11 is located above the outer flange 4;

[0050] When the sliders 16 of the support rods 11 on opposite sides of the inner tube 2 are both located in the second guide grooves 13, the unfolded rotating rods 20 are located in a straight line;

[0051] When the sliders 16 of the support rods 11 on opposite sides of the inner tube 2 are both located in the third guide grooves 14 , the unfolded rotating rods 20 are parallel to each other.

[0052] The needle 22 is L-shaped. The material of the needle 22 is stainless steel. The material of the rotating rod 20 is stainless steel.

[0053] Principle of the embodiment: This embodiment has the functions of barbecue and grill. Initially, the slider 16 is located at the lower end of the first guide groove 12. Figure 2 ;

[0054] When the grill is needed, the support rod 11 is pulled upwards, and the slider 16 is located at the upper end of the first guide groove 12. At this time, the rotating rod 20 is located on the upper side of the outer flange 4. Figure 5 and Figure 6Under the action of the spring, the rotating rod 20 is unfolded to the horizontal state, the supporting rod 11 is rotated, and the slider 16 is rotated to the upper end of the second guide groove 13 through the transition groove 15, see Figure 7 At this time, the two rotating rods 20 are coaxial, and then the connecting shaft 21 is put on one of the rotating rods 20, and the threaded hole 24 of the connecting shaft 21 is aligned with the other rotating rod 20, see Figure 8 , then rotate the connecting shaft 21, the threaded hole 24 and the other rotating rod 20 are threaded together, press downward, and the slider 16 reaches the lower end of the second guide groove 13, see Figure 9 At this time, put the food on the needle 22, rotate the rotating seat 17, and grill it.

[0055] When the grilling mesh plate 25 is used for grilling, in the initial state, after the support rod 11 is pulled upward, the support rod 11 is rotated, and the slider 16 enters the third guide groove 14. At this time, the rotating rods 20 are unfolded and parallel to each other. Figure 11 and Figure 12 , place the grilling mesh plate 25 on the rotating rod 20 and press it downward, and the slider 16 is located at the lower end of the third guide groove 14.

Claims

1. A smokeless heating stove, characterized in that: The air duct comprises an outer tube, an inner tube located in the outer tube, and an outer flange located at the upper end of the inner tube; the outer flange is placed on the upper end of the outer tube, a total air inlet is circumferentially provided at the lower end of the outer tube, an upper air inlet is circumferentially provided at the upper end of the inner tube, a lower air inlet is provided at the bottom of the inner tube, and a support foot is provided at the bottom of the outer tube. Guide tubes are fixedly connected to opposite sides of the outer tube, through holes are provided on opposite sides of the outer flange, a support rod passing through the through holes is inserted into the guide tube, three parallel guide grooves are provided on the inner wall of the guide tube, a transition groove is provided at the upper end of the guide tube, the upper end of the guide groove is connected to the transition groove, a slider is fixedly connected to the support rod, and the slider is slidably connected in a guide groove The upper end of the support rod is passed through a rotating seat rotatably connected to the upper end of the support rod, one end of the rotating seat is provided with a rotating groove, and one side of the support rod is provided with a accommodating groove for a rotating rod. The upper end of the rotating rod is hinged in the rotating groove, and the hinged end of the rotating rod is provided with a spring for driving the rotating rod to rotate to a horizontal shape. The above-mentioned heating stove also includes a fork for connecting food and a barbecue mesh plate for placing food; the fork includes a connecting shaft and a needle fixed to the connecting shaft; one end of the connecting shaft is provided with a socket for inserting the rotating rod, and the other end is provided with a threaded hole for threaded connection with the rotating rod, and the socket and the threaded hole are coaxial.

2. A smokeless heating stove according to claim 1, characterized in that: The height of the main air inlet is lower than that of the lower air inlet.

3. The smokeless heating stove according to claim 1, characterized in that: An ash receiving tray is provided at the bottom of the outer cylinder for receiving the ashes dropped from the bottom of the inner cylinder.

4. The smokeless heating stove according to claim 1, characterized in that: The guide groove is divided into a first guide groove, a second guide groove, and a third guide groove, and the length of the first guide groove is longer than the length of the second guide groove and the third guide groove; When the slider is located at the lower end of the first guide groove, the upper end of the support rod is located above the outer flange; When the sliders of the support rods on opposite sides of the inner cylinder are both located in the second guide grooves, the unfolded rotating rods are located in a straight line; When the sliders of the support rods on opposite sides of the inner cylinder are both located in the third guide grooves, the unfolded rotating rods are parallel to each other.

5. The smokeless heating stove according to claim 4, characterized in that: The needle is L-shaped.

6. The smokeless heating stove according to claim 4, characterized in that: The needle is made of stainless steel.

7. The smokeless heating stove according to claim 4, characterized in that: The rotating rod is made of stainless steel.

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