Commercial kitchen energy-saving heat supply equipment with waste heat recovery function

Abstract

The commercial kitchen energy-saving heat supply equipment with the waste heat recovery function comprises a cooking bench, a set of cooking utensils are fixedly installed on the cooking bench, a range hood is fixedly installed above the cooking bench, and the smoke exhaust end of the range hood communicates with a smoke exhaust pipe; water retaining frames are fixedly connected to the outer surface, located at the table top of the cooking bench, of the stove and the upper surface of the cooking bench, a water guide hole is formed in the table top of the cooking bench, and a water supply pipe is fixedly connected to the side, away from the water guide hole, of the table top of the cooking bench; a heat supply piece for storing water and supplying heat is arranged in the cooking bench; and a heat supply piece for storing water and supplying heat is arranged in the cooking bench. According to the energy-saving kitchen range, part of heat in the using process of the kitchen range can be absorbed through the supporting ring covering the kitchen range and the heat conduction copper pipe on the water storage tank and guided into the water storage tank, a water source in the water storage tank is heated, follow-up hot water supply is facilitated, and therefore the energy-saving effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen heating, and in particular to a commercial kitchen energy-saving heating device with a waste heat recovery function. Background Art

[0002] A commercial kitchen refers to a large kitchen suitable for catering venues such as hotels, restaurants, and canteens of major government agencies, schools, and construction sites. Its characteristics are that it has a wide variety of products, and its specifications, power, capacity, etc. are much larger than those of home kitchens, and its price is relatively high, focusing on the overall kitchen.

[0003] The metal parts of commercial kitchen equipment are all made of stainless steel; they can be roughly divided into five categories: cooking equipment, smoke exhaust and ventilation equipment, conditioning equipment, mechanical equipment, and refrigeration and insulation equipment.

[0004] In commercial kitchens, stoves and exhaust ventilation systems are the main sources of heat. Therefore, the temperature in commercial kitchens is much higher than that in home kitchens. To lower the temperature of the stove during use, it is usually necessary to continuously run water over the stove. This is done to cool the stove to prevent burns to the cook, and also to facilitate access to water during cooking.

[0005] However, the heat generated by the continuously cooling water flow and the stove equipment and smoke exhaust ventilation equipment during use is often directly lost and not effectively recycled, resulting in varying degrees of resource waste. Therefore, a commercial kitchen energy-saving heating equipment with waste heat recovery function is proposed to solve the above problems. Summary of the Invention

[0006] (1) Purpose of the invention

[0007] In order to solve the technical problems existing in the background technology, the present invention proposes a commercial kitchen energy-saving heating equipment with waste heat recovery function. Through the cooperation of the heating component and the circulating heating component, the water resources and heat energy during the use of the kitchen can be effectively recycled and utilized, which has the advantages of energy saving and emission reduction.

[0008] (2) Technical solution

[0009] The present invention provides a commercial kitchen energy-saving heating device with a waste heat recovery function, comprising a stove, a set of stoves fixedly mounted on the stove, a range hood fixedly mounted above the stove, and a smoke exhaust end of the range hood connected to a smoke exhaust pipe;

[0010] The outer surface of the stove located at the stove table and the upper surface of the stove are both fixedly connected to a water retaining frame, a water guide hole is opened on the stove table, and a water supply pipe is fixedly connected to the side of the stove table away from the water guide hole;

[0011] The stove is provided with a heating element for storing water and providing heat;

[0012] The heating element includes two water tanks symmetrically fixedly connected to the inner bottom wall of the stove. A support ring is fixedly connected to the pot rack of each stove. The inner peripheral wall of each support ring is fixedly connected to a heat-conducting copper pipe with one end passing through and extending into the corresponding water tank below. A temperature sensor is fixedly installed on the inner wall of each water tank. A liquid level gauge extending into the water tank is fixedly installed on the inner top wall of each water tank. The outer surface of the lower end of the left water tank is connected to a drain pipe that passes through the stove. A connecting pipe is connected between the lower ends of the two water tanks.

[0013] The inner top wall of the stove is provided with a filter element for connecting the water guide hole and the water storage tank and filtering the water flow;

[0014] A circulating heating element for circulating and heating the water in the water tank is provided on the back of the stove.

[0015] Preferably, the end of the heat-conducting copper tube located inside the support ring and the end located inside the water tank are both spiral-shaped, and valves are installed on the drain pipe and the connecting pipe.

[0016] Preferably, the table top of the stove is concave in the middle and high on both sides, and high in the front and low in the back, and the water guide hole is located at a low position on the table top of the stove.

[0017] Preferably, the filter element includes a filter chamber, a water guide pipe, a support plate, a filter element, a water outlet pipe, an oil drain pipe and an oil receiving barrel;

[0018] The filter bin is fixedly connected above the two water storage tanks, the water guide pipe is connected between the water guide hole and the filter bin, the support plate is embedded in the front side of the inner wall of the filter bin, and the front side of the inner wall of the filter bin is open, the water outlet pipe is connected to the bottom of the filter bin and is respectively connected to the two water storage tanks, the oil drain pipe is connected to the support plate, the filter element is installed on one side of the support plate located on the inner side of the filter bin, and the oil collecting bucket is placed on the inner bottom wall of the stove and is located between the two water storage tanks.

[0019] Preferably, the filter element is composed of a stainless steel woven mesh (20-50 μm) filter element, an ultra-fine glass fiber layer and an oleophobic polyester fiber layer, and the oleophobic polyester fiber layer is inclined, and the water outlet pipe is Y-shaped.

[0020] Preferably, the oil drain pipe is located between the ultra-fine glass fiber layer and the oleophobic polyester fiber layer, a control valve is installed at the connection between the oil drain pipe and the support plate, and the oil drain pipe is located directly above the oil receiving barrel.

[0021] Preferably, a rubber sealing ring extending into the filter bin is embedded on the outer side of the support plate, and a sealing groove for the rubber sealing ring to extend is provided at the connection between the filter bin and the support plate.

[0022] Preferably, the circulating heating element is composed of a pump body, a set of water pumping pipes and a return pipe;

[0023] The pump body is fixedly installed on the back of the stove, a group of water suction pipes are connected to the liquid inlet end of the pump body, and the end of the water suction pipe away from the pump body passes through the stove and is connected to the two water tanks respectively, the return pipe is connected to the liquid outlet end of the pump body, and the end of the return pipe away from the pump body is wrapped around the exhaust pipe, and passes through the stove and is connected to the filter bin.

[0024] Preferably, the outer surfaces of the water suction pipe, return pipe and water storage tank are all installed with insulation cotton; one group of the water suction pipes is connected to the liquid inlet end of the pump body through a three-way valve, and the winding part of the return pipe and the smoke exhaust pipe is spiral.

[0025] Preferably, the front of the stove is open, and a group of inspection doors are hinged at the opening of the stove, and a control panel is provided on one side of the stove.

[0026] (3) Beneficial effects

[0027] Compared with the prior art, the above technical solution of the present invention has the following beneficial technical effects:

[0028] 1. This commercial kitchen energy-saving heating equipment with waste heat recovery function can absorb part of the heat generated by the stove during use through the support ring covering the stove and the heat-conducting copper tube on the water tank, and guide it into the water tank to heat the water source in the water tank to facilitate the subsequent supply of hot water, thereby achieving energy-saving effects.

[0029] 2. This commercial kitchen energy-saving heating equipment with waste heat recovery function can filter and recover the water flow continuously discharged from the stove countertop for cooling through the filter compartment and water pipe above the two water tanks and the water guide holes, and guide it into the water tank to achieve water resource recycling and reduce resource waste.

[0030] 3. This commercial kitchen energy-saving heating equipment with waste heat recovery function can pump the water in the water tank to the exhaust pipe through the pump body, suction pipe and return pipe, which can further increase the heating rate of the water flow and recover part of the heat in the exhaust pipe, thereby further achieving energy-saving effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Provide a three-dimensional diagram of the overall structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the opening of the inspection door of the overall structure of the present invention;

[0033] Figure 3 This is a three-dimensional cross-sectional view of the heating element structure of the present invention;

[0034] Figure 4 This is a three-dimensional cross-sectional view of the filter structure of the present invention;

[0035] Figure 5 It is a rear view of the overall structure of the present invention;

[0036] In the figure: 1. stove; 2. stove; 3. water supply pipe; 4. range hood; 5. exhaust pipe; 6. water retaining frame; 7. heating element; 71. support ring; 72. water storage tank; 73. thermal copper pipe; 74. drain pipe; 75. temperature sensor; 76. connecting pipe; 77. liquid level gauge; 8. filter element; 81. filter chamber; 82. water guide pipe; 83. support plate; 84. filter element; 85. water outlet pipe; 86. oil drain pipe; 87. oil collecting barrel; 9. circulating heating element; 91. pump body; 92. water suction pipe; 93. return pipe; 10. water guide hole. DETAILED DESCRIPTION

[0037] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0038] In the description of the invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of the invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, such as welding, riveting, or bonding, or a detachable connection, such as threaded connection, key connection, or pin connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium, or it may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0040] like Figure 1-5 As shown, the present invention proposes a commercial kitchen energy-saving heating device with waste heat recovery function, comprising a stove 1, a set of stoves 2 fixedly mounted on the stove 1, a range hood 4 fixedly mounted above the stove 1, and a smoke exhaust pipe 5 connected to the smoke exhaust end of the range hood 4;

[0041] The outer surface of the stove 2 located on the table of the stove 1 and the upper surface of the stove 1 are fixedly connected with a water retaining frame 6. A water guide hole 10 is opened on the table of the stove 1. A water supply pipe 3 is fixedly connected to the side of the table of the stove 1 away from the water guide hole 10.

[0042] A heating element 7 for storing water and providing heat is provided in the stove 1;

[0043] A circulating heating element 9 for circulating and heating the water in the water tank 72 is provided on the back of the stove 1 .

[0044] In the present invention, through the cooperation of the heating element 7 and the circulating heating element 9, the water resources and heat energy in the process of using the kitchen can be effectively recycled and utilized.

[0045] It should be noted that the front of the stove 1 is open, and a set of inspection doors are hinged at the opening of the stove 1.

[0046] In an optional embodiment, the heating element 7 includes two water tanks 72 symmetrically fixedly connected to the inner bottom wall of the stove 1. A support ring 71 is fixedly connected to the pot rack of each stove 2. The inner peripheral wall of each support ring 71 is fixedly connected to a heat-conducting copper tube 73 with one end passing through and extending into the corresponding water tank 72 below. A temperature sensor 75 is fixedly installed on the inner wall of each water tank 72. A liquid level gauge 77 extending into the water tank 72 is fixedly installed on the inner top wall of each water tank 72. The outer surface of the lower end of the left water tank 72 is connected to a drain pipe 74 that passes through the stove 1. A connecting pipe 76 is connected between the lower ends of the two water tanks 72.

[0047] The inner top wall of the stove 1 is provided with a filter element 8 for connecting the water guide hole 10 with the water storage tank 72 and filtering the water flow.

[0048] In this embodiment, the support ring 71 covering the stove 2 and the heat-conducting copper tube 73 on the water tank 72 can absorb part of the heat generated by the stove 2 during use and guide it into the water tank 72, thereby heating the water source in the water tank 72 to facilitate the subsequent supply of hot water, thereby achieving energy saving.

[0049] It should be noted that the tabletop of the stove 1 is concave in the middle and high on both sides, and high in the front and low in the back. The water guide hole 10 is located at a low position on the tabletop of the stove 1, so that the cooling water continuously released from the tabletop of the stove 1 can be better guided to flow out from the water guide hole 10;

[0050] A control panel is provided on one side of the stove 1 , which is electrically connected to the temperature sensor 75 and the liquid level gauge 77 , and is used to monitor the temperature and water level in the water tank 72 .

[0051] The end of the heat-conducting copper tube 73 located inside the support ring 71 and the end located inside the water tank 72 are both spiral-shaped to increase the contact area between the heat-conducting copper tube 73 and the heat generated by the cooker 2, as well as the contact area between the heat-conducting copper tube 73 and the water flow inside the water tank 72. The end of the heat-conducting copper tube 73 located inside the support ring 71 is a heat-absorbing end, and the end located inside the water tank 72 is a heat-dissipating end.

[0052] Valves are installed on both the drain pipe 74 and the connecting pipe 76 , and the valves are solenoid valves used to control the drain pipe 74 to discharge the hot water in the left water tank 72 .

[0053] In an optional embodiment, the filter element 8 includes a filter chamber 81, a water guide pipe 82, a support plate 83, a filter element 84, a water outlet pipe 85, an oil drain pipe 86 and an oil receiving barrel 87;

[0054] The filter bin 81 is fixedly connected above the two water storage tanks 72, the water guide pipe 82 is connected between the water guide hole 10 and the filter bin 81, the support plate 83 is embedded in the front side of the inner wall of the filter bin 81, and the front side of the inner wall of the filter bin 81 is open, the water outlet pipe 85 is connected to the bottom of the filter bin 81 and is respectively connected to the two water storage tanks 72, the oil drain pipe 86 is connected to the support plate 83, and the oil collecting barrel 87 is placed on the inner bottom wall of the stove 1 and is located between the two water storage tanks 72.

[0055] In this embodiment, the filter compartment 71 and the water pipe 82 above the two water tanks 72 cooperate with the water guide hole 10 to filter and recover the water flow continuously discharged from the stove 1 countertop for cooling, and guide it into the water tank 72 to achieve water resource recycling and reduce resource waste.

[0056] It should be noted that the filter element 84 is composed of a stainless steel woven mesh (20-50 μm), an ultra-fine glass fiber layer, and an oleophobic polyester fiber layer, and the oleophobic polyester fiber layer is inclined. The stainless steel woven mesh (20-50 μm), the ultra-fine glass fiber layer, and the oleophobic polyester fiber layer are used to perform three-layer filtration on the water flow into the water storage tank 72. The stainless steel woven mesh (20-50 μm) is used to intercept solid impurities, the ultra-fine glass fiber layer is used to absorb tiny oil droplets (0.5-20 μm) and coalesce them into large oil droplets, and the oleophobic polyester fiber layer is used to prevent the coalesced oil droplets from floating up, allowing only water to pass through, thereby filtering and separating impurities and oil stains in the water flow;

[0057] The water outlet pipe 85 is Y-shaped, so that the Y-shaped water storage pipe 85 can respectively guide the filtered water flow into the two water storage tanks 72.

[0058] Among them, the oil drain pipe 86 is located between the ultra-fine glass fiber layer and the oleophobic polyester fiber layer, and a control valve is installed at the connection between the oil drain pipe 86 and the support plate 83, and the oil drain pipe 86 is located directly above the oil receiving barrel 87, which is used to receive the oil stains filtered out by the oil drain pipe 86 through the oleophobic polyester fiber layer.

[0059] In addition, a rubber sealing ring extending into the filter chamber 81 is embedded on the outer side of the support plate 83, and a sealing groove for the rubber sealing ring to extend is provided at the connection between the filter chamber 81 and the support plate 83, so that when the support plate 83 is pushed into the filter chamber 81, the rubber sealing ring can be squeezed into the sealing groove, so that the support plate 83 is interference fit in the filter chamber 81.

[0060] In an optional embodiment, the circulation heating element 9 is composed of a pump body 91, a set of water pumping pipes 92 and a return pipe 93;

[0061] The pump body 91 is fixedly installed on the back of the stove 1, and a group of water suction pipes 92 are connected to the liquid inlet end of the pump body 91, and the end of the water suction pipe 92 away from the pump body 81 passes through the stove 1 and is connected to the two water tanks 72 respectively. The return pipe 93 is connected to the liquid outlet end of the pump body 91, and the end of the return pipe 93 away from the pump body 91 is wrapped around the exhaust pipe 5, and passes through the stove 1 and is connected to the filter bin 81.

[0062] In this embodiment, the water flow in the water tank 72 can be pumped to the smoke exhaust pipe 5 through the pump body 91 in conjunction with the water suction pipe 92 and the return pipe 93, which can further increase the heating rate of the water flow and recover part of the heat in the smoke exhaust pipe 5, thereby further achieving the energy-saving effect.

[0063] It should be noted that the outer surfaces of the water extraction pipe 92 , the return pipe 93 and the water storage tank 72 are all installed with thermal insulation cotton to reduce heat loss when the water flows through the water extraction pipe 92 , the return pipe 93 and is stored in the water storage tank 72 .

[0064] Among them, a group of water pumping pipes 92 are connected to the liquid inlet end of the pump body 91 through a three-way valve, and the winding part of the return pipe 93 and the smoke exhaust pipe 5 is spiral, which increases the contact area between the mutual pipe 93 and the smoke exhaust pipe 5, and the spiral end of the return pipe 93 does not need to be installed with thermal insulation cotton, so that the return pipe 91 can absorb and conduct the heat when the smoke exhaust pipe 5 discharges smoke when it is attached to the smoke exhaust pipe 5.

[0065] The working principle in the above embodiment is:

[0066] During use, the stove 2 generates an open flame, which generates relatively high heat around the stove 2. Water is discharged through the water supply pipe 3 onto the surface of the stove 1 and is blocked by the water retaining frame 6. This not only cools the surface but also provides water for the chef to use. Meanwhile, the water on the surface, while cooling the surface, can flow into the filter chamber 81 through the water guide hole 10 and the water guide pipe 82. The water is filtered and degreased by the filter element 84 composed of a stainless steel woven mesh (20-50 μm), an ultra-fine glass fiber layer, and an oleophobic polyester fiber layer on the support plate 83. The water then flows into the water storage tank 72 for storage. Furthermore, during cooking, water with less impurities can also be guided through the water guide hole 10 for filtration and storage, without having to be poured into the sink for discharge.

[0067] The support ring 71 covering the stove 2 and the heat-conducting copper tube 73 located inside the support ring 71 can absorb the heat generated by the stove 2 and conduct it to one end of the water tank 72 for dissipation. The heat-conducting copper tube 73 can absorb part of the heat generated by the stove 2 during use, heat the water in the water tank 72, and facilitate the subsequent supply of hot water. When hot water is needed, the valve on the drain pipe 74 can be opened to output the hot water in the left water tank 72 for heating. The connecting pipe 76 between the two water tanks 72 can control the flow of water from the right water tank 72 to the left water tank 72 for replenishment.

[0068] During the use of hot water, the water temperature in the water tank 72 can be monitored by the temperature sensor 75. When the temperature of the hot water required does not reach the required temperature, the pump body 91 can be started to cooperate with the water suction pipe 92 and the return pipe 93 to pump the water flow in the water tank 72 to the smoke exhaust pipe 5, which can further increase the heating rate of the water flow and meet the demand for rapid heating.

[0069] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A commercial kitchen energy-saving heating device with a waste heat recovery function, comprising a stove (1), a set of stoves (2) fixedly mounted on the stove (1), a range hood (4) fixedly mounted above the stove (1), and a smoke exhaust end of the range hood (4) connected to a smoke exhaust pipe (5); Its characteristics are: The outer surface of the stove (2) located on the tabletop of the stove (1) and the upper surface of the stove (1) are both fixedly connected to a water retaining frame (6); a water guide hole (10) is provided on the tabletop of the stove (1); and a water supply pipe (3) is fixedly connected to the side of the tabletop of the stove (1) away from the water guide hole (10); The stove (1) is provided with a heating element (7) for storing water and supplying heat; The heating element (7) includes two water storage tanks (72) symmetrically fixedly connected to the inner bottom wall of the stove (1); a support ring (71) is fixedly connected to the pot rack of each stove (2); the inner peripheral wall of each support ring (71) is fixedly connected to a heat-conducting copper pipe (73) with one end penetrating and extending into the corresponding lower water storage tank (72); the inner wall of each water storage tank (72) is fixedly installed with a temperature sensor (75); the inner top wall of each water storage tank (72) is fixedly installed with a liquid level gauge (77) extending into the water storage tank (72); the outer surface of the lower end of the left water storage tank (72) is connected to a drain pipe (74) penetrating the stove (1); and a connecting pipe (76) is connected between the lower ends of the two water storage tanks (72); The inner top wall of the stove (1) is provided with a filter element (8) for connecting the water guide hole (10) with the water storage tank (72) and filtering the water flow; A circulating heating element (9) for circulating and heating the water in the water storage tank (72) is provided on the back of the stove (1).

2. The commercial kitchen energy-saving heating equipment with waste heat recovery function according to claim 1 is characterized in that: The end of the heat-conducting copper tube (73) located inside the support ring (71) and the end located inside the water storage tank (72) are both spiral-shaped, and valves are installed on the drain pipe (74) and the connecting pipe (76).

3. The commercial kitchen energy-saving heating equipment with waste heat recovery function according to claim 1 is characterized in that: The tabletop of the stove (1) is concave in the middle and high on both sides, and high in the front and low in the back. The water guide hole (10) is located at a low position on the tabletop of the stove (1).

4. The commercial kitchen energy-saving heating equipment with waste heat recovery function according to claim 1 is characterized in that: The filter element (8) comprises a filter chamber (81), a water guide pipe (82), a support plate (83), a filter element (84), a water outlet pipe (85), an oil drain pipe (86) and an oil receiving barrel (87); The filter chamber (81) is fixedly connected above the two water storage tanks (72); the water guide pipe (82) is connected between the water guide hole (10) and the filter chamber (81); the support plate (83) is embedded in the front side of the inner wall of the filter chamber (81), and the front side of the inner wall of the filter chamber (81) is open; the water outlet pipe (85) is connected to the bottom of the filter chamber (81) and is respectively connected to the two water storage tanks (72); the oil drain pipe (86) is connected to the support plate (83); the filter element (84) is installed on one side of the support plate (83) located inside the filter chamber (81); the oil receiving barrel (87) is placed on the inner bottom wall of the stove (1) and is located between the two water storage tanks (72).

5. The commercial kitchen energy-saving heating equipment with waste heat recovery function according to claim 4 is characterized in that: The filter element (84) is composed of a stainless steel woven mesh (20-50 μm) filter element, an ultra-fine glass fiber layer and an oleophobic polyester fiber layer, and the oleophobic polyester fiber layer is inclined, and the water outlet pipe (85) is Y-shaped.

6. The commercial kitchen energy-saving heating equipment with waste heat recovery function according to claim 4, characterized in that: The oil drain pipe (86) is located between the ultra-fine glass fiber layer and the oleophobic polyester fiber layer. A control valve is installed at the connection between the oil drain pipe (86) and the support plate (83), and the oil drain pipe (86) is located directly above the oil receiving barrel (87).

7. The commercial kitchen energy-saving heating equipment with waste heat recovery function according to claim 5, characterized in that: A rubber sealing ring extending into the filter chamber (81) is embedded on the outer side of the support plate (83), and a sealing groove for the rubber sealing ring to extend is provided at the connection between the filter chamber (81) and the support plate (83).

8. The commercial kitchen energy-saving heating equipment with waste heat recovery function according to claim 1, characterized in that: The circulating heating element (9) is composed of a pump body (91), a group of water pumping pipes (92) and a return pipe (93); The pump body (91) is fixedly mounted on the back of the stove (1); a group of water pumping pipes (92) are connected to the liquid inlet end of the pump body (91); and one end of the water pumping pipe (92) away from the pump body (81) passes through the stove (1) and is respectively connected to the two water storage tanks (72); the return pipe (93) is connected to the liquid outlet end of the pump body (91); and one end of the return pipe (93) away from the pump body (91) is wound around the exhaust pipe (5) and passes through the stove (1) and is connected to the filter bin (81).

9. The commercial kitchen energy-saving heating equipment with waste heat recovery function according to claim 8, characterized in that: The outer surfaces of the water extraction pipe (92), the return pipe (93) and the water storage tank (72) are all installed with heat insulation cotton; one group of the water extraction pipes (92) is connected to the liquid inlet end of the pump body (91) through a three-way valve, and the winding part of the return pipe (93) and the smoke exhaust pipe (5) is spiral.

10. The commercial kitchen energy-saving heating equipment with waste heat recovery function according to claim 1, characterized in that: The front of the stove (1) is open, and a set of inspection doors are hinged at the opening of the stove (1). A control panel is provided on one side of the stove (1).

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