Multi-layer cross flow guide type heat recovery device

Abstract

The invention relates to the technical field of heat recovery, in particular to a multi-layer cross flow guide type heat recovery device which comprises a waste heat recovery box used in cooperation with a cooking bench, a cooking range and a flow guide channel, an exhaust port formed in the top of the waste heat recovery box, an adjusting knob rotationally connected to the cooking bench and a metal flow guide pipe arranged in the waste heat recovery box. The transmission assembly is arranged on the cooking bench, the adjusting assembly is arranged in the waste heat recycling box, and the opening and closing assembly is arranged on the adjusting assembly; according to the waste heat recovery device, the fire power is controlled through the adjusting knob, and meanwhile, the distance between the adjusting assembly and the metal flow guide pipe can be controlled, so that the requirement of flue gas on the efficiency of passing through the waste heat recovery box under different fire powers is met; and potential safety hazards caused by pressure rise in the cooking range due to low smoke passing efficiency under the condition of large fire are prevented.

Description

Technical Field

[0001] The present invention relates to the field of heat recovery technology, and in particular to a multi-layer cross-flow conduction type heat recovery device. Background Art

[0002] A commercial stove is a high-power, high-efficiency gas stove mainly used in commercial kitchens or large kitchens. It has the characteristics of fast heating and high fire output, and is suitable for scenarios where large amounts of food need to be cooked quickly.

[0003] When traditional commercial stoves are in use, due to the strong fire power and high flame temperature, more than 50% of the heat will be discharged to the outside with the flue gas, and the heat is not fully utilized. Therefore, with the progress of society and the improvement of people's environmental awareness, the waste heat utilization technology of commercial stoves has begun to be gradually promoted. The existing waste heat recovery device is achieved by adding a waste heat recovery box on the back of the stove and installing a metal diversion pipe with annular fins inside. By introducing the flue gas in the stove into the waste heat recovery box, the cold water passing through the metal diversion pipe is heat exchanged to fully absorb heat and heat up. The heated water can be stored and then transported to various water points for use, fully recycling and utilizing the heat generated by the stove flame.

[0004] However, in the waste heat recovery system of existing commercial stoves, in order to make full use of the flue gas heat and ensure that the metal guide tube can absorb the flue gas heat to the maximum extent, the size design of the waste heat recovery box is often adapted to the size and area of the metal guide tube, and the metal guide tube is in a state of being in contact with or nearly in contact with the inner wall of the waste heat recovery box. Therefore, when the stove is used at a high fire gear, the metal guide tube will cause greater resistance to the discharge of flue gases, which may easily cause the pressure in the stove to increase, thereby leading to incomplete combustion of liquefied gas and even the production of harmful gases such as carbon monoxide, posing a safety hazard. Although the existing technology can solve the above problem by changing the density of the annular fins on the metal guide tube or the distance between the metal guide tube and the waste heat recovery box, by increasing the spacing or reducing the fin density, when the stove is used at a low fire gear, it is easy to cause incomplete contact between the metal guide tube and the flue gas, resulting in insufficient heat absorption, and the water temperature cannot meet the usage requirements.

[0005] To this end, a multi-layer cross-flow heat recovery device is proposed. Summary of the Invention

[0006] The purpose of the present invention is to provide a multi-layer cross-conducting heat recovery device, which solves the problem that when the stove is used in a high-fire gear, the metal guide tube and the inner wall of the waste heat recovery box are in a state of being in contact or nearly in contact, which easily causes the pressure in the stove to increase, and then leads to insufficient combustion of liquefied gas, causing safety hazards. By controlling the firepower by adjusting the knob, the distance between the adjustment component and the metal guide tube can be controlled to meet the requirements of the efficiency of the flue gas passing through the waste heat recovery box under different firepower, and prevent the low efficiency of the flue gas passing under high firepower from causing the pressure in the stove to increase, which brings safety hazards.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The heat dissipation device of the present invention is a heat dissipation device for use with a stove, a furnace and a guide channel, comprising a waste heat recovery box used in conjunction with a stove, a stove and a guide channel, an exhaust outlet arranged on the top of the waste heat recovery box, an adjusting knob rotatably connected to the stove, and a metal guide pipe arranged in the waste heat recovery box, and also comprising a transmission assembly arranged on the stove, an adjusting assembly arranged in the waste heat recovery box, and an opening and closing assembly arranged on the adjusting assembly; the waste heat recovery box is connected to the stove through the guide channel; the adjusting assembly is located on both sides of the metal guide pipe; when the adjusting knob is rotated, it can control the firepower and also drive the transmission assembly to control the swing angle of the adjusting assembly, thereby adjusting the space size on both sides of the metal guide pipe. The greater the firepower, the greater the swing amplitude of the adjusting assembly, and the smoother the smoke passes through; the opening and closing assembly can adjust the efficiency of the smoke passing through the adjusting assembly as the adjusting assembly swings, and the opening size of the opening and closing assembly changes with the swing angle of the adjusting assembly. The greater the upward swing amplitude of the adjusting assembly, the larger the opening of the opening and closing assembly.

[0009] Preferably, the metal guide tube is also provided with annular fins, a water inlet pipe, and a water outlet pipe; the annular fins are fixedly connected to the outside of the metal guide tube; the water inlet pipe is fixedly connected to the bottom of the metal guide tube; the water outlet pipe is fixedly connected to the top of the metal guide tube; the metal guide tube completes the heat exchange between cold water and hot flue gas through the contact between itself and the annular fins and the flue gas, and completes the flue gas waste heat recovery.

[0010] Preferably, the transmission assembly includes gear 1 fixedly connected to the end of the adjusting knob, a transmission rod rotatably connected to the stove, gear 2 fixedly connected to the transmission rod, a worm fixedly connected to the transmission rod, a support frame fixedly connected to the outside of the stove, a worm wheel rotatably connected to the support frame, and a sliding member arranged at the bottom of the waste heat recovery box; gear 1 is engaged with gear 2; the worm wheel is engaged with the worm; when the operator turns the adjusting knob to control the fire power, gear 1 will drive gear 2 to rotate, gear 2 drives the transmission rod and the worm to rotate, and then drives the worm wheel to rotate through the worm, and finally drives the sliding member to work through the worm wheel.

[0011] Preferably, the sliding member includes two sets of support rails fixedly connected to the bottom of the waste heat recovery box, tooth block 1 slidably connected to the left support rail, and tooth block 2 slidably connected to the right support rail; tooth block 1 and tooth block 2 are located on both sides of the worm gear and mesh with it; when the worm gear rotates, the worm gear will drive tooth block 1 and tooth block 2 to move in opposite directions.

[0012] The preferred adjustment component includes multiple groups of adjustment plates rotatably connected to the side walls on both sides of the waste heat recovery box, a linkage rod rotatably connected between the longitudinal adjustment plates, a limit block fixedly connected to the side wall of the waste heat recovery box, and a connector arranged at the bottom of the adjustment plate; the adjustment plates are arranged in a longitudinal equidistant array on both sides of the metal guide tube; the number of adjustment plates on both sides of the metal guide tube is the same, and the adjustment plates on the left and right sides are cross-arranged, each group of adjustment plates is located in the middle of the two opposite groups of adjustment plates, and the position of the lowest adjustment plate on the left side of the metal guide tube is higher than the position of the lowest adjustment plate on the right side; when any group of adjustment plates in the longitudinal direction is deflected, all the longitudinal adjustment plates will be driven to deflect at the same angle at the same time through the linkage rod.

[0013] Preferably, the connecting member includes a connecting rod 1 rotatably connected between the tooth block 1 and the left adjustment plate, and a connecting rod 2 rotatably connected between the top of the tooth block 2 and the right adjustment plate; when the adjustment knob is rotated to increase the firepower, the tooth block 1 will move upward and the tooth block 2 will move downward, and then the adjustment plates on both sides of the metal guide tube will be driven to move in opposite directions through the connecting rod 1 and the connecting rod 2. At this time, the adjustment plate on the right side of the metal guide tube will swing upward, and the adjustment plate on the left side of the metal guide tube will swing downward. At this time, the space between the adjustment plates on both sides of the metal guide tube and the metal guide tube will become larger.

[0014] Preferably, the top of the connecting rod one is connected to the left half area of the left adjustment plate, the top of the connecting rod two is connected to the left half area of the right adjustment plate, and the length of the connecting rod one is greater than that of the connecting rod two; the different lengths of the connecting rod one and the connecting rod two, as well as the different connection points on the adjustment plates, are to adapt to the different height positions of the lowest adjustment plates on both sides of the metal guide tube, so that when the worm gear rotates, the swing amplitude of the adjustment plates on both sides can be driven to be consistent.

[0015] Preferably, the opening and closing assembly includes an arc-shaped protrusion fixedly connected in the waste heat recovery box, a through-hole opened on the adjustment plate, a sliding cover slidably connected to the through-hole, a push rod fixedly connected to the sliding cover, and a spring arranged on the left side of the sliding cover; the greater the upward swing amplitude of the adjustment plate, the greater the distance the push rod moves to the left of the adjustment plate, and thus the larger the opening opened by the sliding cover on the through-hole.

[0016] Preferably, the waste heat recovery box is further provided with a guide plate 1, a movable groove, a protrusion block, and a guide plate 2; the guide plate 1 is located at the bottom of the waste heat recovery box, the movable groove is opened on the guide plate 1, the protrusion block is located on the left side of the movable groove, and the guide plate 2 is located at the top of the waste heat recovery box; the height of the protrusion block on the left side of each group of movable grooves is higher than that on the right side of the movable groove, so when the flue gas enters the waste heat recovery box and passes through the protrusion, it can pass over the movable groove from here, reducing the discharge of flue gas from the movable groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the present invention, when the adjustment knob is turned to increase the firepower, the worm gear will rotate counterclockwise, the gear block 1 will move downward, and the gear block 2 will move upward. At this time, the adjustment plate on the right side of the metal guide tube will swing upward, and the adjustment plate on the left side of the metal guide tube will swing downward. At this time, the space between the adjustment plates on both sides of the metal guide tube and the metal guide tube will become larger, thereby allowing more flue gas to pass quickly from both sides of the metal guide tube, thereby preventing the increase in flue gas resistance when the firepower is high, causing the pressure in the stove to rise and the liquefied gas to be insufficiently burned, causing a safety hazard. When the adjustment knob is turned to reduce the firepower, the adjustment plate will swing closer to the metal guide tube, reducing the distance between the adjustment plate and the metal guide tube, thereby ensuring that when the firepower is low, the flue gas can be slowed down by the resistance of the adjustment plate when passing through the metal guide tube, so that the cold water in the metal guide tube can also fully exchange heat with the hot flue gas passing through.

[0019] 2. When the stove of the present invention is operating at high firepower, the upward-sloping adjustment plate on the right side can guide the smoke to flow to the upper left and pass through the annular fins and the metal guide tube, thereby improving the heat absorption efficiency of the metal guide tube. The downward-sloping adjustment plate on the left side can form resistance to the upward-flowing smoke, so that the heat is gathered under the left adjustment plate, and then the heat is transferred to the metal guide tube with the turbulence of the smoke in the waste heat recovery box, thereby further improving the heat absorption efficiency of the metal guide tube. The heat absorption efficiency of the metal guide tube is effectively ensured while improving the smoke passing efficiency.

[0020] 3. In the present invention, when the right adjustment plate swings upward along the axis, the push rod on the sliding cover will abut against the outer arc surface of the arc-shaped protrusion and be pushed to move to the left of the adjustment plate to overcome the spring force. As the adjustment plate swings upward more, the push rod moves to the left of the adjustment plate. As a result, the opening opened by the sliding cover on the passage becomes larger, ensuring that smoke can gradually enter the upper adjustment plate from the passage under high firepower, further ensuring the smoke passing efficiency under high firepower conditions, and facilitating a more uniform distribution of smoke between different adjustment plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall appearance of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure behind the hidden stove of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the waste heat recovery box of the present invention;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the transmission assembly of the present invention;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the sliding member of the present invention;

[0026] Figure 6 is a cross-sectional view of the adjustment assembly of the present invention;

[0027] Figure 7 This is an enlarged schematic diagram of the bottom structure of the waste heat recovery box of the present invention;

[0028] Figure 8 This is a schematic structural diagram of the right side adjustment plate opening of the present invention;

[0029] Figure 9 A diagram showing the swinging process of the opening and closing member of the present invention;

[0030] Figure: 1. Cooktop; 2. Stove; 21. Diversion channel; 3. Waste heat recovery box; 31. Diversion plate 1; 32. Moving groove; 33. Raised block; 34. Diversion plate 2; 4. Adjustment knob; 5. Metal diversion pipe; 51. Annular fin; 52. Water inlet pipe; 53. Water outlet pipe; 6. Transmission assembly; 61. Gear 1; 62. Transmission rod; 63. Gear 2; 64. Worm; 65. Support frame ; 66. Worm gear; 67. Sliding part; 671. Support rail; 672. Gear block 1; 673. Gear block 2; 7. Adjustment assembly; 71. Adjustment plate; 72. Linkage rod; 73. Limit block; 74. Connecting part; 741. Connecting rod 1; 742. Connecting rod 2; 8. Opening and closing assembly; 81. Arc-shaped protrusion; 82. Through port; 83. Sliding cover; 84. Spring; 85. Push rod; 9. Discharge port. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figures 1 to 9 The present invention provides a multi-layer cross-flow heat recovery device, and the technical solution is as follows:

[0033] As an embodiment of the present invention, refer to Figures 1 to 3 , a multi-layer cross-flow heat recovery device, including a waste heat recovery box 3 used in conjunction with the stove 1, the stove 2 and the guide channel 21, an exhaust port 9 arranged on the top of the waste heat recovery box 3, an adjusting knob 4 rotatably connected to the stove 1, and a metal guide pipe 5 arranged in the waste heat recovery box 3, and also includes a transmission component 6 arranged on the stove 1, an adjusting component 7 arranged in the waste heat recovery box 3, and an opening and closing component 8 arranged on the adjusting component 7; the waste heat recovery box 3 is connected to the stove 2 through the guide channel 21; the adjusting component 7 is located on both sides of the metal guide pipe 5; when in use, the high-temperature flue gas in the stove 2 can enter the waste heat recovery box 3 along the guide channel 21, and finally be discharged from the exhaust port 9. When the operator adjusts the firepower in the stove 2 through the adjusting knob 4, the adjusting knob 4 will simultaneously drive the transmission assembly 6 to operate, thereby causing the transmission assembly 6 to drive the adjustment assembly 7 to adjust the distance between it and the metal guide tube 5. When the fire power is higher, the swing amplitude of the adjustment assembly 7 will be larger, the distance between the metal guide tube 5 and the adjustment assembly 7 will be larger, and the smoke will pass through more smoothly, thereby preventing the occurrence of high smoke exhaust resistance when the fire power is too strong, which may cause incomplete combustion of the liquefied gas. When the adjustment knob 4 is turned to the low fire state, the distance between the metal guide tube 5 and the adjustment assembly 7 will decrease, allowing the metal guide tube 5 to fully absorb the heat of the smoke in the low fire state. The opening size of the opening and closing assembly 8 will also change with the swing of the adjustment assembly 7. The higher the fire power, the larger the opening, and vice versa, the smaller the opening, allowing smoke to pass through the adjustment assembly 7, further improving the smoke passage efficiency when the fire power is high.

[0034] As an embodiment of the present invention, refer to Figure 3 The metal guide tube 5 is also provided with an annular fin 51, an inlet pipe 52, and an outlet pipe 53; the annular fin 51 is fixedly connected to the outside of the metal guide tube 5; the inlet pipe 52 is fixedly connected to the bottom of the metal guide tube 5; the outlet pipe 53 is fixedly connected to the top of the metal guide tube 5; during use, water flows from the inlet pipe 52 into the metal guide tube 5, and is finally discharged from the outlet pipe 53 after circulating. During this process, the metal guide tube 5 will complete the heat exchange between cold water and hot flue gas through the contact between itself and the annular fin 51 and the flue gas, and then absorb heat to heat up the cold water, completing the waste heat recovery of the flue gas.

[0035] As an embodiment of the present invention, refer to Figure 4 and Figure 5The transmission assembly 6 includes a gear 1 61 fixedly connected to the end of the adjusting knob 4, a transmission rod 62 rotatably connected to the stove 1, a gear 2 63 fixedly connected to the transmission rod 62, a worm 64 fixedly connected to the transmission rod 62, a support frame 65 fixedly connected to the outside of the stove 1, a worm wheel 66 rotatably connected to the support frame 65, and a sliding member 67 arranged at the bottom of the waste heat recovery box 3, and the sliding member 67 is arranged on both sides of the worm wheel 66; the gear 1 61 is meshed with the gear 2 63, and the diameter of the gear 2 63 is much smaller than that of the gear 1 61; the worm wheel 66 is meshed with the worm 64; when the operator turns the adjusting knob 4, the fire power can be controlled by the adjusting knob 4, and when the adjusting knob 4 is turned, the gear 1 61 will drive the gear 2 63 to rotate, and the gear 2 63 will drive the transmission rod 62 and the worm 64 to rotate, and then the worm wheel 66 will be driven to rotate through the worm 64, and finally the sliding member 67 is driven to work through the worm wheel 66.

[0036] As an embodiment of the present invention, refer to Figure 5 The sliding member 67 includes two sets of support rails 671 fixedly connected to the bottom of the waste heat recovery box 3, a gear block 1 672 slidably connected to the left support rail 671, and a gear block 2 673 slidably connected to the right support rail 671; the gear block 1 672 and the gear block 2 673 are located on both sides of the worm gear 66 and mesh with it. When the worm gear 66 rotates, the worm gear 66 drives the gear block 1 672 and the gear block 2 673 to move in opposite directions.

[0037] As an embodiment of the present invention, refer to Figure 3 and Figure 6 The adjustment assembly 7 includes a plurality of adjustment plates 71 rotatably connected to the side walls on both sides of the waste heat recovery box 3, a linkage rod 72 rotatably connected between the longitudinal adjustment plates 71, a limit block 73 fixedly connected to the side wall of the waste heat recovery box 3, and a connecting piece 74 provided at the bottom of the adjustment plate 71; the adjustment plates 71 are arranged in an equidistant array in the longitudinal direction on both sides of the metal guide tube 5, and the number of adjustment plates 71 on both sides of the metal guide tube 5 is the same, and the adjustment plates 71 on the left and right sides are cross-arranged, each group of adjustment plates 71 is located in the middle of the two opposite groups of adjustment plates 71, and the position of the lowest adjustment plate 71 on the left side of the metal guide tube 5 is higher than that of the lowest adjustment plate 71 on the right side. When any one of the longitudinal adjustment plates 71 is deflected, the linkage rod 72 will drive all the longitudinal adjustment plates 71 to deflect at the same angle at the same time. When the adjustment knob 4 is in the closed state, the adjustment plates 71 on both sides of the metal guide tube 5 will be in a horizontal state. At this time, the adjustment plates 71 are in abutment with the limit blocks 73.

[0038] As an embodiment of the present invention, refer to Figure 3 、 Figure 6 and Figure 7The cam 742 of the second embodiment is connected to the left side of the cam 743 and the right side of the cam 744. The cam 742 of the second embodiment is connected to the right side of the cam 744. The cam 742 of the second embodiment is connected to the right side of the cam 744. The adjusting plates 71 on the sides move in opposite directions. At this time, the adjusting plate 71 on the right side of the metal guide tube 5 will swing upward, and the adjusting plate 71 on the left side of the metal guide tube 5 will swing downward. At this time, the space between the adjusting plates 71 on both sides of the metal guide tube 5 and the metal guide tube 5 will become larger, thereby allowing more smoke to pass quickly from both sides of the metal guide tube 5, preventing the increase of smoke resistance when the fire is strong, causing the pressure in the stove 2 to increase and the liquefied gas to burn incompletely. At this time, the upward-tilted adjusting plate 71 on the right side can guide the smoke to flow to the upper left and pass through the annular fins 51 and the metal guide tube 5, thereby improving the heat absorption efficiency of the metal guide tube 5. The downward-tilted adjusting plate 71 on the left side can form resistance to the upward-flowing smoke, causing the heat to gather under the left adjusting plate 71, and then with the turbulence of the smoke in the waste heat recovery box 3, the heat is transferred to the metal guide tube 5, further improving the heat absorption efficiency of the metal guide tube 5, effectively increasing the smoke passing efficiency while ensuring the heat absorption efficiency of the metal guide tube 5.

[0039] As an embodiment of the present invention, refer to Figure 8 and Figure 9 The opening and closing assembly 8 includes an arc-shaped protrusion 81 fixedly connected to the waste heat recovery box 3, a through-hole 82 opened on the adjustment plate 71, a sliding cover 83 slidably connected to the through-hole 82, a push rod 85 fixedly connected to the sliding cover 83, and a spring 84 arranged on the left side of the sliding cover 83; the arc-shaped protrusion 81 is located on the right side wall of the waste heat recovery box 3, and the inner arc center of the arc-shaped protrusion 81 is the same as the axis of the rotation axis of the adjustment plate 71; when the right adjustment plate 71 swings upward along the axis, the push rod 85 on the sliding cover 83 will abut against the outer arc surface of the arc-shaped protrusion 81 and be pushed to overcome the force of the spring 84 and move to the left side of the adjustment plate 71, and as the adjustment plate 71 swings upward more, the push rod 85 moves a greater distance to the left of the adjustment plate 71, and thus the opening opened by the sliding cover 83 on the through-hole 82 becomes larger.

[0040] As an embodiment of the present invention, refer to Figure 6 and Figure 7 , the waste heat recovery box 3 is further provided with a guide plate 1 31, a movable groove 32, a protruding block 33, and a guide plate 2 34; the guide plate 1 31 is located at the bottom of the waste heat recovery box 3, the movable groove 32 is opened on the guide plate 1 31, and there are two groups of movable grooves 32, which can provide space for the movement of the connecting rod 1 741 and the connecting rod 2 742, the protruding block 33 is located on the left side of the movable groove 32, and the guide plate 2 34 is located at the top of the waste heat recovery box 3; when the flue gas is discharged from the guide plate 31, the guide plate 1 31 is provided with a protruding block 33, and the guide plate 2 is provided with a protruding block 33. When the flow channel 21 enters the bottom of the waste heat recovery box 3, the guide plate 1 31 will play a guiding role, allowing the flue gas to enter the waste heat recovery box 3 more smoothly along the curved surface of the guide plate 1 31. The height of the protrusion 33 on the left side of each group of movable grooves 32 is higher than that on the right side of the movable groove 32. Therefore, when the flue gas enters the waste heat recovery box 3 and passes through the protrusion, it can cross the movable groove 32 from here, reducing the discharge of flue gas from the movable groove 32. The guide plate 2 34 can facilitate the flue gas to be discharged better from the top.

[0041] Working principle: Refer to Figure 1 and Figure 7 During use, the high-temperature flue gas in the stove 2 can enter the waste heat recovery box 3 along the diversion channel 21 and finally be discharged from the exhaust port 9. When the operator adjusts the fire power in the stove 2 by adjusting the knob 4, the gear 1 61 will drive the gear 2 63 to rotate, and the gear 2 63 will drive the transmission rod 62 and the worm 64 to rotate, and then the worm 64 will drive the worm gear 66 to rotate, and finally the worm gear 66 drives the gear block 1 672 and the gear block 2 673 to move in opposite directions, and then the connecting rod 1 741 and the connecting rod 2 742 drive the adjustment plates 71 on both sides of the metal guide pipe 5 to move in opposite directions;

[0042] Reference Figures 4 to 7When the adjustment knob 4 is turned to increase the firepower, the worm gear 66 will rotate counterclockwise, the gear block 1 672 will move downward, and the gear block 2 673 will move upward. At this time, the adjustment plate 71 on the right side of the metal guide tube 5 will swing upward, and the adjustment plate 71 on the left side of the metal guide tube 5 will swing downward. At this time, the space between the adjustment plates 71 on both sides of the metal guide tube 5 and the metal guide tube 5 will become larger, thereby allowing more smoke to pass quickly from both sides of the metal guide tube 5, preventing the increase in smoke resistance when the firepower is high, causing the pressure in the stove 2 to rise and the liquefied gas to burn incompletely. At this time, the upward-tilted adjustment plate 71 on the right side can guide the smoke to flow to the upper left and pass through the annular fin 51 and the metal guide tube 5, thereby improving the heat absorption efficiency of the metal guide tube 5. The downwardly inclined adjustment plate 71 on the left side can form resistance to the upward flowing flue gas, so that the heat is gathered under the left adjustment plate 71, and then the heat is transferred to the metal guide pipe 5 with the turbulent flow of the flue gas in the waste heat recovery box 3, further improving the heat absorption efficiency of the metal guide pipe 5, effectively increasing the flue gas passing efficiency while ensuring the heat absorption efficiency of the metal guide pipe 5. When the adjustment knob 4 is turned to reduce the fire power, the adjustment plate 71 will swing closer to the metal guide pipe 5, reducing the distance between the adjustment plate 71 and the metal guide pipe 5, thereby ensuring that the flue gas can be slowed down by the resistance of the adjustment plate 71 when passing through the metal guide pipe 5 at a low fire power, so that the cold water in the metal guide pipe 5 can also fully exchange heat with the hot flue gas passing through;

[0043] Reference Figure 8 and Figure 9 When the right adjustment plate 71 swings upward along the axis, the push rod 85 on the sliding cover 83 will abut against the outer arc surface of the arc-shaped protrusion 81 and be pushed to move to the left of the adjustment plate 71 to overcome the force of the spring 84. As the adjustment plate 71 swings upward, the push rod 85 moves to the left of the adjustment plate 71. As a result, the opening opened by the sliding cover 83 on the through port 82 becomes larger, ensuring that smoke can gradually enter the upper adjustment plate 71 from the through port 82 when the fire is high.

[0044] While we have provided specific embodiments of the present invention, those skilled in the art will readily appreciate that these embodiments are susceptible to numerous variations, modifications, substitutions, and alterations without departing from the fundamental principles and purpose of the present invention. The scope of the present invention is not fixed but is ultimately determined by the claims and their equivalents contained in the patent documents. In short, the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-layer cross-flow heat recovery device, comprising a waste heat recovery box (3) used in conjunction with a stove (1), a stove (2) and a flow guide channel (21), an exhaust port (9) arranged on the top of the waste heat recovery box (3), an adjustment knob (4) rotatably connected to the stove (1), and a metal flow guide pipe (5) arranged in the waste heat recovery box (3), characterized in that: The invention also includes a transmission component (6) arranged on the stove (1), an adjustment component (7) arranged in the waste heat recovery box (3), and an opening and closing component (8) arranged on the adjustment component (7); the waste heat recovery box (3) is connected to the stove (2) through a guide channel (21); the adjustment component (7) is located on both sides of the metal guide pipe (5); when the adjustment knob (4) is rotated, it can control the fire power and can also drive the transmission component (6) to control the swing angle of the adjustment component (7), thereby adjusting the space size on both sides of the metal guide pipe (5); the opening and closing component (8) can adjust the efficiency of the smoke passing through the adjustment component (7) as the adjustment component (7) swings.

2. The multi-layer cross-flow heat recovery device according to claim 1, characterized in that: The metal flow guide tube (5) is further provided with an annular fin (51), a water inlet pipe (52), and a water outlet pipe (53); the annular fin (51) is fixedly connected to the outside of the metal flow guide tube (5); the water inlet pipe (52) is fixedly connected to the bottom of the metal flow guide tube (5); and the water outlet pipe (53) is fixedly connected to the top of the metal flow guide tube (5).

3. The multi-layer cross-flow heat recovery device according to claim 2, characterized in that: The transmission assembly (6) comprises a gear 1 (61) fixedly connected to the end of the adjustment knob (4), a transmission rod (62) rotatably connected to the stove (1), a gear 2 (63) fixedly connected to the transmission rod (62), a worm (64) fixedly connected to the transmission rod (62), a support frame (65) fixedly connected to the outside of the stove (1), a worm wheel (66) rotatably connected to the support frame (65), and a sliding member (67) arranged at the bottom of the waste heat recovery box (3); the gear 1 (61) is meshed with the gear 2 (63); and the worm wheel (66) is meshed with the worm (64).

4. The multi-layer cross-flow heat recovery device according to claim 3, characterized in that: The sliding member (67) includes two sets of support rails (671) fixedly connected to the bottom of the waste heat recovery box (3), a tooth block 1 (672) slidably connected to the left support rail (671), and a tooth block 2 (673) slidably connected to the right support rail (671); the tooth block 1 (672) and the tooth block 2 (673) are located on both sides of the worm gear (66) and meshed with it.

5. The multi-layer cross-flow heat recovery device according to claim 4, characterized in that: The regulating assembly (7) comprises a plurality of regulating plates (71) rotatably connected to the inner side walls of the waste heat recovery box (3), a linkage rod (72) rotatably connected between the longitudinal regulating plates (71), a limit block (73) fixedly connected to the side walls of the waste heat recovery box (3), and a connecting piece (74) arranged at the bottom of the regulating plate (71); the regulating plates (71) are arranged in a longitudinal equidistant array on both sides of the metal flow guide tube (5); the number of regulating plates (71) on both sides of the metal flow guide tube (5) is the same, and the regulating plates (71) on the left and right sides are cross-arranged, and each group of regulating plates (71) is located in the middle of the two opposing groups of regulating plates (71).

6. The multi-layer cross-flow heat recovery device according to claim 5, characterized in that: The connecting member (74) includes a connecting rod (741) rotatably connected between the first gear block (672) and the left adjustment plate (71), and a connecting rod (742) rotatably connected between the top of the second gear block (673) and the right adjustment plate (71).

7. The multi-layer cross-flow heat recovery device according to claim 6, characterized in that: The top of the connecting rod 1 (741) is connected to the left half of the left adjustment plate (71), and the top of the connecting rod 2 (742) is connected to the left half of the right adjustment plate (71).

8. The multi-layer cross-flow heat recovery device according to claim 7, characterized in that: The opening and closing assembly (8) comprises an arc-shaped protrusion (81) fixedly connected to the waste heat recovery box (3), a through opening (82) provided on the adjustment plate (71), a sliding cover (83) slidably connected to the through opening (82), a push rod (85) fixedly connected to the sliding cover (83), and a spring (84) arranged on the left side of the sliding cover (83).

9. The multi-layer cross-flow heat recovery device according to claim 1, characterized in that: The waste heat recovery box (3) is further provided with a guide plate 1 (31), a movable groove (32), a protruding block (33), and a guide plate 2 (34); the guide plate 1 (31) is located at the bottom of the waste heat recovery box (3), the movable groove (32) is opened on the guide plate 1 (31), the protruding block (33) is located on the left side of the movable groove (32), and the guide plate 2 (34) is located at the top of the waste heat recovery box (3).

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