A real fire fireplace

Abstract

The application discloses a real fire fireplace, and technical scheme points are as follows: a gas supply pipe is used to direct air supply, so that the stable flow of the flame and waste gas flow is realized; the design of the main heat pipe, the auxiliary heat pipe and the partition plate is used, so that the air flow temperature of the fresh air passing through the radiating fin is balanced; the air flow conversion cabin is divided into two cabin rooms through the partition plate; the stable and balanced shunt design of the stable directional input of the combustion-supporting air and the rising of the waste gas is cooperated, so that the air flow with more balanced overall temperature can be formed after the fresh air passes through the radiating fin and is heated.

Description

Technical Field

[0001] This invention relates to a fireplace, and more specifically, to a real fire fireplace. Background Technology

[0002] Most residents in cold regions will place a fireplace in their homes for indoor heating. Real fireplaces mainly achieve heating by burning compressed biofuel pellets.

[0003] Existing fireplaces suffer from unstable airflow during combustion, causing hot air to circulate and rise within different heating pipes. This results in varying airflow rates in different locations, leading to uneven heating of the fresh air blown through the pipes and a temperature difference in the fresh air entering the room, thus reducing user comfort. Summary of the Invention

[0004] The purpose of this invention is to provide a real fire fireplace that provides a stable flow of heated air, thereby improving the heat exchange efficiency and stabilizing the heat exchange of fresh air, reducing the temperature difference of the fresh air blown into the room, and improving the user's comfort.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0006] A fireplace with a real flame includes a furnace body, a combustion chamber, and an exhaust pipe. A combustion trough is installed inside the combustion chamber, and a hopper is installed in the combustion trough. An airflow layer is provided between the combustion trough and the hopper. An air supply pipe is connected to the combustion trough and inserts into the interior of the combustion trough along the airflow layer, with its end abutting against the inner wall of the combustion trough. The hopper has multiple rows of main vent holes, and the side wall of the air supply pipe has multiple rows of air delivery holes, which face the interior of the fireplace and are arranged towards the main vent holes. A fresh air duct is fitted against the back of the combustion chamber, and a heat exchange chamber is installed at the top of the combustion chamber. The heat exchange chamber includes an airflow conversion chamber, multiple main heat pipes, and multiple secondary heat pipes. The main heat pipes connect the airflow conversion chamber and the combustion chamber, and the secondary heat pipes connect the airflow conversion chamber and the exhaust pipe. The exhaust pipe is equipped with an exhaust fan. The outlet of the fresh air duct faces the main heat pipes and secondary heat pipes to achieve fresh air heating. There is a gap between the main heat pipes and secondary heat pipes to allow fresh air to circulate. The main heat pipes are located in the middle of the airflow conversion chamber, and the secondary heat pipes are located on both sides of the main heat pipes. A partition plate is fixed inside the airflow conversion chamber to separate the multiple main heat pipes. The partition plate divides the airflow conversion chamber into two compartments.

[0007] Preferably, the hopper has an inclined surface facing the air supply hole, and the main air vent is located on the inclined surface; the minimum distance between the inclined surface and the air supply pipe is 0.5-1.5cm.

[0008] Preferably, the main heat pipe and the secondary heat pipe are equipped with multiple heat sinks, which are arranged along the length of the main heat pipe and the secondary heat pipe, and the spacing between adjacent heat sinks is the same.

[0009] Preferably, the combustion chamber is provided with exhaust branch pipes on both sides, the exhaust branch pipes are connected to the airflow conversion chamber and the exhaust pipe, the auxiliary heat conduction pipes are connected to the exhaust branch pipes and the exhaust pipe in sequence, and the exhaust branch pipes are arranged in close alignment with the fresh air duct.

[0010] Preferably, the primary heat pipe and the secondary heat pipe are equally divided into two compartments by a partition plate; the outlet of the fresh air duct is equipped with a flow divider plate that divides the airflow into an upper airflow and a lower airflow, with the lower airflow directed towards the primary heat pipe and the secondary heat pipe; an upper warm air duct is installed above the airflow conversion chamber, the top plate of the airflow conversion chamber is the pipe wall of the upper warm air duct, one end of the upper warm air duct is connected to the upper airflow, and the other end of the upper warm air duct is located above the heat sink.

[0011] Preferably, an inclined plate is fixed at the upper end of the gas branch pipe. The inclined plate is located in the combustion chamber, and the inclined plates on both sides are inclined toward the main heat pipe to guide the heat flow into the main heat pipe. The inclined plate is located at the boundary between the main heat pipe and the secondary heat pipe.

[0012] Preferably, air intake holes are provided at the bottom, sides, and top of the hopper.

[0013] Preferably, a cleaning trough is provided below the combustion chamber, the furnace body is provided with a rotating side door, a sealing plate is slidably connected to the bottom of the combustion chamber, and a connecting rod assembly is hinged between the side door and the sealing plate; when the side door is opened, the connecting rod assembly drives the sealing plate to slide away from the bottom of the combustion chamber; when the side door is closed, the connecting rod assembly drives the sealing plate to seal the bottom of the combustion chamber.

[0014] Preferably, the linkage assembly includes a first linkage hinged to the side door, a second linkage hinged to the other end of the first linkage, a rotating shaft sleeved on the body of the second linkage, and the rotating shaft fixed to the furnace body; a third linkage hinged to the other end of the second linkage, a fourth linkage hinged to the other end of the third linkage, and a fourth linkage hinged to one end of the sealing plate; the fourth linkage has a guide groove, and a guide block that slides in the guide groove is fixed to the furnace body.

[0015] Preferably, there are two side doors, each linked to a sealing plate. The two sealing plates are located on the left and right sides of the bottom of the combustion chamber. A baffle is fixed to the end of the sealing plate inside the combustion chamber to prevent the sealing plate from sliding off the combustion chamber. The baffle protrudes from the bottom of the combustion chamber.

[0016] In summary, the present invention has the following beneficial effects:

[0017] (1) The advantage of this design is that it changes the air intake method, changing the original method of directly introducing the air into the combustion chamber to a method of directional air supply towards the rack hopper. This mainly avoids the airflow moving around in the combustion chamber, which is conducive to the stability of flame combustion.

[0018] Secondly, since the airflow of the gas supply pipe is arranged towards the inside of the fireplace, it is beneficial for the flames to burn towards the inside of the fireplace, making it less likely for the flames to come into contact with the fireplace's viewing window, thus reducing the probability of the viewing window being blackened.

[0019] In this design, the hot air from the combustion chamber flows upward into the main air duct, then enters the secondary air duct through the airflow conversion chamber, and finally exhausts the combustion exhaust gas through the exhaust pipe. Meanwhile, the fresh air that needs to be heated flows through the outer walls of the main and secondary air ducts to achieve heat exchange, which increases the airflow temperature. As the airflow flows through the room, it accelerates the indoor temperature rise. The advantage of this design is that it utilizes the secondary heat source of the exhaust gas. Because the exhaust gas has a high temperature after undergoing a heat exchange when flowing through the main heat duct, it undergoes a second heat exchange through the return flow of the secondary air duct, which improves the heat exchange efficiency of the exhaust gas and enhances energy utilization.

[0020] The partition plate of the airflow conversion chamber stabilizes the exchange efficiency of fresh air. The secondary air duct is located on both sides of the main air duct. Through the action of the partition plate, the exhaust gas is divided into two streams, realizing two stable and circular airflows, so that the fresh air flowing through the radiator has similar temperatures on the left and right sides.

[0021] Without the partition plate, the airflow in the airflow conversion chamber would fluctuate, leading to unstable airflow in multiple secondary air ducts and uneven airflow temperature through the heat sink. The partition plate in this design effectively solves this technical problem.

[0022] Obviously, the directional air supply method ensures a stable flow of flame and exhaust gas, and the design of the main heat pipe, the secondary heat pipe and the partition plate ensures that the temperature of the fresh air flowing through the heat sink is uniform.

[0023] By combining the stable directional input of combustion air with the stable and balanced diversion design of rising exhaust gas, the fresh air can form a more uniform airflow temperature after being heated by the heat sink.

[0024] (2) The main vent and the air supply vent are used to separate the airflow and prevent large airflows from affecting the stability of the flame. The advantages of separating the airflow are: first, the vent itself has a guiding effect; second, the vent divides the airflow into multiple streams, making the chaotic airflow tend to be stable.

[0025] The purpose of the inclined plane is to guide the airflow. Because the airflow is divided into multiple streams, it is difficult to achieve precise one-to-one flow. A small amount of airflow will inevitably flow along the inclined plane. The main vent above the inclined plane can also draw some airflow into the hopper.

[0026] The purpose of the air intake is to ensure the complete combustion of the fuel. Since a small amount of airflow will inevitably enter the feed hopper outside the main air intake, and this small amount of airflow cannot affect the direction of the flame, the use of air intakes in multiple directions to guide a small amount of air into the feed hopper makes the biofuel burn more completely.

[0027] (3) By arranging multiple heat sinks on the main air duct and the secondary air duct, the efficiency of fresh air heat exchange is increased.

[0028] In this design, the fresh air duct is located at the back of the combustion chamber, the heat exchange chamber is located at the top of the combustion chamber, and the two exhaust branch pipes are located on both sides of the combustion chamber. This design ensures that the fireplace, except for the front window and bottom with a viewing window, is completely enclosed by a partition. This design makes the sides, top, and back of the fireplace equivalent to having heat insulation chambers. This can prevent heat energy from being directly dissipated through the outer wall of the fireplace, which is conducive to concentrating heat energy in the heat exchange chamber, facilitating the rapid heating of fresh air and its diffusion to the surroundings.

[0029] Secondly, this insulated cabin design prevents the sides, top, and back of the fireplace from getting too hot, and makes it less likely for users to get burned if they accidentally touch it.

[0030] The inclined plate of the bronchus acts as a guide. Since the main bronchus and the secondary bronchus are densely arranged at the top of the combustion chamber, the design of the inclined plate can quickly guide the hot air flow in the combustion chamber to the main bronchus, and the exhaust gas flowing out of the secondary bronchus can also quickly flow into the exhaust pipe, which can accelerate heat exchange.

[0031] (4) The side door and the sealing plate at the bottom of the combustion chamber are linked. The opening and closing of the side door is used as the switch for the sliding of the sealing plate. The advantage of this is that users do not need to reach into the furnace body to clean the ash. As long as the side is opened, the ash will fall into the ash cleaning trough below under the action of gravity. The ash cleaning trough has a drawer structure, and the ash is collected and removed after a large amount of ash has accumulated. This design uses the linkage of the linkage assembly to effectively solve the problem that the bottom of the combustion chamber is easy to accumulate ash and is difficult to clean.

[0032] Furthermore, traditional furnace bodies often have side doors sealed with sheet metal steel, making them difficult to open. This design uses a rotating opening method, which facilitates observation of the internal side of the furnace body during later maintenance.

[0033] (5) The 4-link structure is adopted to effectively pull the sealing plate open and close. The rotating shaft provides a fulcrum for the rotation of the second link, so that the rotation path of the second link is stable. The fourth link needs to drive the sealing plate to move in a straight line. Therefore, the fourth link and the furnace body are further constrained by the guide groove and guide block, so that the end of the fourth link can stably pull and push the sealing plate.

[0034] (6) The purpose of using dual-side door control is that when the bottom of the combustion chamber is fully opened, the travel distance of the two sealing plates is only half the length of the bottom of the chamber, which greatly reduces the opening range of a single side door.

[0035] Secondly, if one side door is stuck or aged and cannot be opened effectively, the other side door can still be opened to discharge a large amount of ash and slag, without affecting the normal use of the combustion chamber.

[0036] (7) Furthermore, the airflow conversion chamber has a large amount of heat energy. This design uses a diverter plate to divide the fresh airflow into two parts, and the upper airflow is passed through the airflow conversion chamber to achieve heat exchange again, completing the three-stage heat exchange and greatly improving the heat exchange efficiency.

[0037] The primary heat exchanger is the dominant heat pipe;

[0038] The secondary heat exchanger is the secondary heat pipe;

[0039] The third-stage heat exchange is the heat exchange between the upper heating duct and the airflow conversion chamber plate. Attached Figure Description

[0040] Figure 1 This is a schematic diagram showing the positional relationship between the furnace and heating pipes inside a fireplace in existing technology;

[0041] Figure 2 This is a schematic diagram of the fireplace structure in the embodiment;

[0042] Figure 3 This is a schematic diagram showing the positional relationship between the heat sink and the airflow conversion chamber in the fireplace in the embodiment;

[0043] Figure 4 This is a schematic diagram showing the positional relationship between the blower, air inlet pipe, and exhaust pipe on the back of the fireplace in this embodiment;

[0044] Figure 5 This is a schematic diagram showing the positional relationship between the fresh air duct, the airflow conversion chamber, and the heat sink in the embodiment;

[0045] Figure 6 This is a schematic diagram showing the positional relationship of the partition plates after the airflow conversion chamber is opened in the embodiment;

[0046] Figure 7 This is a schematic diagram of the hot airflow from the combustion chamber to the exhaust manifold in the embodiment;

[0047] Figure 8 This is a schematic diagram of the air intake structure installed in the fireplace in the embodiment;

[0048] Figure 9 This is a schematic diagram of the air intake structure in the embodiment;

[0049] Figure 10This is a schematic diagram showing the positional relationship between the hopper and the air supply pipe in the embodiment;

[0050] Figure 11 This is a schematic diagram showing the positional relationship between the gas supply pipe and the combustion chamber in the embodiment;

[0051] Figure 12 This is a schematic diagram of the gas supply pipe in the embodiment;

[0052] Figure 13 This is a front view of the side doors on both sides of the fireplace in the embodiment;

[0053] Figure 14 This is a schematic diagram of the connecting rod assembly on the back of the fireplace in the embodiment;

[0054] Figure 15 yes Figure 14 Enlarged view of part A in the image;

[0055] Figure 16 This is a schematic diagram showing the internal structure of the combustion chamber in the embodiment;

[0056] Figure 17 This is a schematic diagram showing the connection relationship between the linkage assembly and the combustion chamber when the side door is closed in the embodiment;

[0057] Figure 18 This is a schematic diagram showing the connection relationship between the connecting rod assembly and the combustion chamber when the side door is opened in the embodiment.

[0058] In the picture:

[0059] 901. Furnace chamber; 902. Heating pipes;

[0060] 1. Combustion chamber; 12. Back plate;

[0061] 2. Heat exchange chamber; 21. Airflow conversion chamber; 22. Partition plate; 23. Main heat pipe; 24. Secondary heat pipe; 31. Fresh air duct; 32. Air blower; 33. Diverter plate; 34. Upper heating air duct;

[0062] 41. Exhaust pipe; 42. Exhaust fan; 5. Exhaust branch pipe; 51. Inclined plate; 6. Heat sink;

[0063] 7. Combustion chamber; 71. Sealing plate;

[0064] 8. Hopper rack; 81. Inclined surface; 82. Main vent; 83. Suction vent;

[0065] 9. Airflow layer;

[0066] 101. Air supply pipe; 102. Air inlet;

[0067] 200. Ash removal trough;

[0068] 300. Side door;

[0069] 401. First link; 402. Second link; 403. Third link; 404. Fourth link;

[0070] 500. Rotating shaft;

[0071] 600, guide groove; 601, guide block;

[0072] 701. Baffle. Detailed Implementation

[0073] The present invention will be further described in detail below with reference to the accompanying drawings.

[0074] Reference Figures 2-4 The fireplace includes a combustion chamber 1 and an exhaust pipe 41. The combustion chamber 1 has a transparent window in front of it. An airflow conversion chamber 21 is installed at the upper end of the combustion chamber 1. Below the airflow conversion chamber 21 is a heat sink 6. The airflow is heated by the heat sink 6 and then flows to the front of the fireplace.

[0075] A back plate 12, which is a metal plate, is fixed to the back of the combustion chamber 1. An air supply pipe 101 is installed on the back of the combustion chamber 1. The air supply pipe 101 is located at the bottom of the combustion chamber 1. Air is supplied to the combustion chamber 1 through the air supply pipe 101. An exhaust pipe is installed on the back of the combustion chamber 1. An exhaust fan 42 is installed on the exhaust pipe 41. The exhaust fan 42 extracts the combustion exhaust gas from the combustion chamber and discharges it to the outside through an external pipe.

[0076] Obviously, the air supply pipe 101, combustion chamber 1, and exhaust pipe 41 form an airflow channel. This design mainly focuses on the airflow path from combustion chamber 1 to exhaust pipe 41 to improve the heat exchange efficiency of exhaust gas and fresh air. The specific structure is as follows.

[0077] Reference Figure 5 A fresh air duct 31 is attached to the back of the combustion chamber 1. The fresh air duct 31 is a rectangular tube that is attached to the back plate 12. An air blower 32 is installed below the fresh air duct 31. The air blower 32 draws external air into the fresh air duct 31 and then flows out from the top of the fresh air duct 31.

[0078] Reference Figures 5-7 A heat exchange chamber 2 is installed on the top of the combustion chamber 1. The outlet of the fresh air duct 31 is connected to the heat exchange chamber 2 to heat the fresh air. The heat exchange chamber 2 includes an airflow conversion chamber 21, multiple main heat pipes 23, multiple secondary heat pipes 24, and heat sinks 6.

[0079] The outlet of the fresh air duct 31 is equipped with a diverter plate 33, which divides the airflow into an upper airflow and a lower airflow. The upper airflow and the lower airflow flow in the same direction, with the upper airflow located above the lower airflow.

[0080] The outlet of the fresh air duct 31 is located on the side of the vehicle. The diverter 33 is an L-shaped plate, and the diverter 33 is fixed to the outer wall of the airflow conversion chamber 21 at the outlet position.

[0081] The heat exchange chamber 2 includes an airflow conversion chamber 21, multiple main heat pipes 23 and multiple secondary heat pipes 24 and heat sinks 6;

[0082] The lower airflow is directed toward the main heat pipe 23, the secondary heat pipe 24, and the heat sink 6; an upper warm air pipe 34 is provided above the airflow conversion chamber 21, and the outlet of the upper warm air pipe 34 is connected to the outlet of the fresh air pipe 31. The upper warm air pipe 34 is used to supply the upper airflow.

[0083] The top plate of the airflow conversion chamber 21 is the pipe wall of the upper heating air pipe 34. The upper airflow can complete heat exchange when passing through the top plate of the airflow conversion chamber 21. The airflow conversion chamber 21 contains a large amount of combustion exhaust gas. The top plate of the airflow conversion chamber 21 has a high temperature. The top plate of the airflow conversion chamber 21 is a metal plate. One end of the upper heating air pipe 34 is connected to the upper airflow. The other end of the upper heating air pipe 34 is located above the heat sink 6. This other end is also the air outlet of the upper heating air pipe 34.

[0084] The air outlet of the upper heating duct 34 is located directly above the heat sink 6, so the hot air flowing out of the upper heating duct 34 and the hot air flowing out between the heat sink 6 flow in the same direction; the side of the airflow conversion chamber 21 facing the air outlet of the upper heating duct 34 is sloping downwards, which makes the hot air flow of the upper heating duct 34 flow downwards, and the hot air flow of the upper heating duct 34 and the heat sink 6 are arranged in close contact, one above the other.

[0085] In this design, there are 20 main heat pipes 23 and 12 secondary heat pipes 24. Along the outlet direction of the fresh air duct 31, the main heat pipes 23 and secondary heat pipes 24 are arranged in an alternating manner. This design ensures that the airflow blown out of the fresh air duct 31 can make full contact with the main heat pipes 23 or the secondary heat pipes 24.

[0086] The main heat pipe 23 and the secondary heat pipe 24 are metal circular pipes, and both the main heat pipe 23 and the secondary heat pipe 24 are arranged vertically.

[0087] The main heat pipe 23 connects the airflow conversion chamber 21 and the combustion chamber 1, the secondary heat pipe 24 connects the airflow conversion chamber 21 and the exhaust pipe 41, and the outlet of the fresh air pipe 31 faces the main heat pipe 23 and the secondary heat pipe 24 to achieve fresh air heating.

[0088] There is a gap between the main heat pipe 23 and the secondary heat pipe 24 for fresh air circulation. Four heat sinks 6 are installed on the main heat pipe 23 and the secondary heat pipe 24. The heat sinks 6 are arranged along the length of the main heat pipe 23 and the secondary heat pipe 24. There are four heat sinks 6, and the spacing between adjacent heat sinks 6 is the same.

[0089] The heat sink 6 is located at the outlet of the fresh air duct 31. Therefore, the temperature of the airflow increases after the fresh air blown out of the fresh air duct 31 comes into contact with the heat sink 6, thus achieving the effect of heating the airflow.

[0090] The primary heat pipe 23 is located in the middle of the airflow conversion chamber 21, and the secondary heat pipes 24 are located on both sides of the primary heat pipe 23. The airflow conversion chamber 21 is fixed with a partition plate 22 that separates 20 primary heat pipes 23. The partition plate 22 divides the airflow conversion chamber 21 into two compartments. The primary heat pipes 23 and the secondary heat pipes 24 are equally divided into two compartments by the partition plate 22. Each compartment contains 10 primary heat pipes 23 and 6 secondary heat pipes 24.

[0091] The airflow in the combustion chamber 1 enters the airflow conversion chamber 21 through the main heat pipe 23. The airflow conversion chamber 21 is divided into two chambers, so the airflow in the airflow conversion chamber 21 is split to the left and right sides respectively and enters the outlet branch pipes 5 on both sides respectively.

[0092] Two exhaust branch pipes 5 are located on both sides of the combustion chamber 1. The exhaust branch pipes 5 are connected to the airflow conversion chamber 21 and the exhaust pipe 41. The auxiliary heat conduction pipe 24 is connected to the exhaust branch pipes 5 and the exhaust pipe 41 in sequence. The exhaust branch pipes 5 are arranged in close proximity to the fresh air pipe 31.

[0093] An inclined plate 51 is fixed to the upper end of the exhaust branch pipe 5. The inclined plate 51 is located inside the combustion chamber 1. The inclined plates 51 on both sides are inclined toward the main heat pipe 23 to guide the heat flow into the main heat pipe 23. The inclined plate 51 is located at the boundary between the main heat pipe 23 and the secondary heat pipe 24. Therefore, the exhaust gas from the airflow conversion chamber 21 can be quickly guided into the exhaust branch pipe 5 through the inclined plate 51.

[0094] Reference Figure 7 Working principle: The hot exhaust gas after combustion is guided by the inclined plate 51 and quickly enters the main air pipe. The heated main air pipe heats the airflow blown out by the fresh air pipe 31.

[0095] The hot exhaust gas in the main air duct is diverted into the secondary air ducts on both sides through the partition plate 22. The heated secondary air ducts heat the airflow blown out of the fresh air duct 31.

[0096] The hot exhaust gas flowing out of the secondary vent pipe is guided to the bottom of the fireplace through the two side exhaust branches 5. Then, after the exhaust branches 5 are connected to the exhaust pipe 41, the hot exhaust gas is discharged through the exhaust pipe 41.

[0097] Reference Figures 8-12 This includes the combustion chamber 7 installed in the fireplace; the fireplace has a rectangular structure and is mostly made of stainless steel; the front of the fireplace is used to burn biomass pellets, and there is a viewing window at the front of the fireplace, which is made of transparent material.

[0098] The fireplace is equipped with a combustion chamber 7 by screws, and a feed hopper 8 is installed in the combustion chamber 7 by screws. An airflow layer 9 is provided between the combustion chamber 7 and the feed hopper 8. The combustion chamber 7 is a stainless steel trough, closed at the bottom and open at the top, with an overall funnel-shaped structure. The feed hopper 8 is inserted into the combustion chamber 7 from top to bottom.

[0099] The hopper 8 has an opening at the top and a slope 81 at the bottom.

[0100] The combustion chamber 7 is connected to a gas supply pipe 101, which is fixed to the fireplace. A fan is installed at the end of the gas supply pipe 101, and the fan blows external airflow into the combustion chamber 7.

[0101] The air supply pipe 101 is inserted into the interior of the combustion chamber 7 along the airflow layer 9. The airflow layer 9 is the space inside the combustion chamber 7, mainly referring to the space between the inner wall of the combustion chamber 7 and the feed hopper 8.

[0102] The end of the air supply pipe 101 is in contact with the inner wall of the combustion chamber 7. This design is intended to seal the end of the air supply pipe 101 and prevent air from escaping from the end.

[0103] The feed hopper 8 has a row of main vent holes 82, and the side wall of the air supply pipe 101 has a row of air delivery holes 102. The air delivery holes 102 face the interior of the fireplace and are arranged towards the main vent holes 82. The air delivery holes 102 are evenly spaced along the length of the air supply pipe 101. The main vent holes 82 and the air delivery holes 102 have the same diameter; the number of main vent holes 82 is a multiple of the number of air delivery holes 102.

[0104] The hopper 8 is provided with an inclined surface 81, which faces the air supply hole 102. The main air vent 82 is located on the inclined surface 81. The shortest distance between the inclined surface 81 and the air supply pipe 101 is 1 cm.

[0105] like Figure 10 In the hopper 8, air intake holes 83 are provided at the bottom, sides, and top of the hopper 8. The surrounding arrangement of air intake holes 83 can introduce a small amount of fuel that does not enter the main vent 82 into the hopper 8, making the combustion of biofuel more complete.

[0106] Referring to Figures 12-16, including the furnace body, the furnace body is a rectangular structure made of sheet metal.

[0107] The furnace body is equipped with a combustion chamber 7, which is made of stainless steel and has a funnel-shaped structure. The combustion chamber 7 is fixedly connected to the furnace body by welding or screws. The upper end of the combustion chamber 7 is used for introducing biofuel. An air inlet pipe is connected to the side of the combustion chamber 7 to introduce air and accelerate fuel combustion.

[0108] Below the combustion chamber 7 is a cleaning trough 200, which is a drawer structure used to collect ash and slag, and then empty it after the combustion chamber 7 is pulled out.

[0109] The front of the furnace body is a transparent door, and the combustion chamber 7 is located on the front of the furnace body;

[0110] The two sides of the combustion chamber 7 are the two sides of the furnace body, and the two sides are rotatably connected to the side doors 300, which can be rotated and opened / closed.

[0111] Referring to Figures 12-18, a sealing plate 71 is slidably connected to the bottom of the combustion chamber 7. A rectangular opening is provided at the bottom of the combustion chamber 7, and a chute is fixed below the opening. The chute is formed by a steel plate with an L-shaped cross-section. The sealing plate 71 slides in the chute to open and close the bottom of the combustion chamber 7.

[0112] A connecting rod assembly is hinged between the side door 300 and the sealing plate 71; when the side door 300 is opened, the connecting rod assembly causes the sealing plate 71 to slide away from the bottom of the combustion chamber 7; when the side door 300 is closed, the connecting rod assembly causes the sealing plate 71 to seal the bottom of the combustion chamber 7.

[0113] One end of the sealing plate 71 located inside the combustion chamber 7 is fixed with a baffle 701 that prevents the sealing plate 71 from sliding off the combustion chamber 7; the baffle 701 protrudes from the bottom of the combustion chamber 7.

[0114] There are two side doors 300, and the two side doors 300 are linked to two sealing plates 71 respectively. The two sealing plates 71 are located on the left and right sides of the bottom of the combustion chamber 7. The left side door 300 controls the opening and closing of the left sealing plate 71, and the right side door 300 controls the opening and closing of the right sealing plate 71.

[0115] Both side sealing plates 71 are in the closed state, and the bottom of the combustion tank 7 is sealed.

[0116] One side of the sealing plate 71 is in the open state, and the bottom of the combustion chamber 7 is open.

[0117] Reference Figures 17-18 The linkage assembly includes a first linkage 401 hinged to the side door 300, and a second linkage 402 hinged to the other end of the first linkage 401. The rod body of the second linkage 402 is fitted with a rotating shaft 500, and a column is fixed to the lower end of the rotating shaft 500. The column is vertically fixed to the furnace body.

[0118] The other end of the second link 402 is hinged to the third link 403, the other end of the third link 403 is hinged to the fourth link 404, and the other end of the fourth link 404 is hinged to one end of the sealing plate 71. The fourth link 404 is provided with a guide groove 600, which is a long strip groove. The furnace body is fixed with a guide block 601 that slides in the guide groove 600. The furnace body is fixed with a vertical plate. The guide block 601 is fixed to the vertical plate with screws. The vertical plate is also provided with a clearance cut for the fourth link 404 to pass through.

[0119] The principle of the side door 300 linkage is as follows: when the side door 300 is opened, the side door 300 pulls the first link 401 to rotate, and the first link 401 drives the second link 402 to rotate. Since the second link 402 is positioned by the rotation shaft 500, the rotation trajectory is stable. Therefore, the second link 402 can stably drive the third link 403 to rotate.

[0120] The third link 403 drives the fourth link 404 to move. Due to the constraints of the guide groove 600 and the guide block 601, the movement trajectory of the fourth link 404 is also stable.

[0121] The end of the fourth link 404 drives the sealing plate 71 to slide in and out of the groove at the bottom of the combustion chamber 7.

[0122] In this design, when the bottom of the combustion chamber 7 is closed, biomass pellet fuel can be poured into the combustion chamber 7 for combustion. After combustion is complete, the side door 300 is opened, and the sealing plate 71 is opened in conjunction with the side door 300, and the ash residue after combustion falls directly below. This design means that when burning small-volume biomass pellet fuel, users do not need to stick their bodies into the combustion chamber 7 to clean the ash accumulated at the bottom of the combustion chamber 7.

[0123] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A real fireplace, comprising a furnace body, the furnace body having a combustion chamber (1) and an exhaust pipe (41), characterized in that: A combustion chamber (1) is equipped with a combustion trough (7), a hopper (8) is installed in the combustion trough (7), an airflow layer (9) is provided between the combustion trough (7) and the hopper (8), the combustion trough (7) is connected to a gas supply pipe (101), the gas supply pipe (101) is inserted into the interior of the combustion trough (7) along the airflow layer (9), and the end of the gas supply pipe (101) abuts against the inner wall of the combustion trough (7); the hopper (8) has multiple rows of main vent holes (82), and the side wall of the gas supply pipe (101) has multiple rows of air supply holes (102), the air supply holes (102) face the interior of the fireplace and are arranged to point towards the main vent holes (82); A fresh air duct (31) is fitted to the back of the combustion chamber (1), and a heat exchange chamber (2) is installed on the top of the combustion chamber (1). The heat exchange chamber (2) includes an airflow conversion chamber (21), multiple main heat pipes (23) and multiple secondary heat pipes (24). The main heat pipes (23) connect the airflow conversion chamber (21) and the combustion chamber (1), and the secondary heat pipes (24) connect the airflow conversion chamber (21) and the exhaust pipe (41). An exhaust fan (42) is installed on the exhaust pipe (41). The outlet of the fresh air duct (31) faces the main heat pipes (23) and the secondary heat pipes (24) to achieve fresh air heating. There is a gap between the main heat pipes (23) and the secondary heat pipes (24) for fresh air to circulate. The main heat pipe (23) is located in the middle of the airflow conversion chamber (21), and the secondary heat pipe (24) is located on both sides of the main heat pipe (23). The airflow conversion chamber (21) is fixed with a partition plate (22) that separates multiple main heat pipes (23). The partition plate (22) divides the airflow conversion chamber (21) into two compartments. Multiple heat sinks (6) are installed on the main heat pipe (23) and the secondary heat pipe (24). The heat sinks (6) are arranged along the length of the main heat pipe (23) and the secondary heat pipe (24), and the spacing between adjacent heat sinks (6) is the same. The main heat pipe (23) and the secondary heat pipe are divided into two compartments by a partition plate (22); the outlet of the fresh air pipe (31) is equipped with a splitter plate (33) that divides the airflow into an upper airflow and a lower airflow, with the lower airflow directed toward the main heat pipe (23) and the secondary heat pipe (24); an upper warm air pipe (34) is provided above the airflow conversion chamber (21), and the top plate of the airflow conversion chamber (21) is the pipe wall of the upper warm air pipe (34). One end of the upper warm air pipe (34) is connected to the upper airflow, and the other end of the upper warm air pipe (34) is located above the heat sink (6); An inclined plate (51) is fixed at the upper end of the gas branch pipe. The inclined plate (51) is located in the combustion chamber (1). The inclined plates (51) on both sides are inclined towards the main heat pipe (23) to guide the heat flow into the main heat pipe (23). The inclined plate (51) is located at the boundary between the main heat pipe (23) and the secondary heat pipe (24).

2. A real fire fireplace according to claim 1, characterized in that: The hopper (8) is provided with an inclined surface (81) facing the air supply hole (102), and the main air vent (82) is located on the inclined surface (81); the shortest distance between the inclined surface (81) and the air supply pipe (101) is 0.5-1.5cm.

3. A real fire fireplace according to claim 1, characterized in that: The combustion chamber (1) is provided with exhaust branch pipes (5) on both sides. The exhaust branch pipes (5) are connected to the airflow conversion chamber (21) and the exhaust pipe (41). The auxiliary heat conduction pipe (24) is connected to the exhaust branch pipe (5) and the exhaust pipe (41) in sequence. The exhaust branch pipe (5) is arranged in close contact with the fresh air pipe (31).

4. A real fire fireplace according to claim 1, characterized in that: Suction holes (83) are provided at the bottom, sides and top of the hopper (8).

5. A real fire fireplace according to claim 1, characterized in that: A cleaning trough (200) is provided below the combustion trough (7), and the furnace body is provided with a rotating side door (300). A sealing plate (71) is slidably connected to the bottom of the combustion trough (7), and a connecting rod assembly is hinged between the side door (300) and the sealing plate (71). When the side door (300) is opened, the connecting rod assembly drives the sealing plate (71) to slide away from the bottom of the combustion trough (7). When the side door (300) is closed, the connecting rod assembly drives the sealing plate (71) to seal the bottom of the combustion trough (7).

6. A real fire fireplace according to claim 5, characterized in that: The linkage assembly includes a first linkage (401) hinged to the side door (300), a second linkage (402) hinged to the other end of the first linkage (401), a rotating shaft (500) sleeved on the body of the second linkage (402), and the rotating shaft (500) fixed to the furnace body; a third linkage (403) hinged to the other end of the second linkage (402), a fourth linkage (404) hinged to the other end of the third linkage (403), and the other end of the fourth linkage (404) hinged to one end of the sealing plate (71); the fourth linkage (404) has a guide groove (600), and a guide block (601) that slides in the guide groove (600) is fixed to the furnace body.

7. A real fire fireplace according to claim 6, characterized in that: There are two side doors (300), and the two side doors (300) are linked to two sealing plates (71) respectively. The two sealing plates (71) are located on the left and right sides of the bottom of the combustion chamber (7). One end of the sealing plate (71) inside the combustion chamber (7) is fixed with a baffle (701) that prevents the sealing plate (71) from sliding off the combustion chamber (7). The baffle (701) protrudes from the bottom of the combustion chamber (7).

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