An integrated stove waste heat recovery smoke cooler

Abstract

An integrated stove waste heat recovery smoke cooler belongs to the field of integrated stove cooling technology. It includes a smoke cooler box, a heat exchange tube assembly and a multi-tube pipeline adapter. The smoke cooler box includes a front interface, a front baffle, a U-shaped heat exchange body, a rear interface and a rear baffle. A removable baffle is fixedly installed on the U-shaped opening side of the heat exchange body; the front baffle, the heat exchange body, the rear baffle and the removable baffle are assembled and installed to form a whole, and a heat exchange cavity is formed inside the whole, and the heat exchange tube assembly is placed in the heat exchange cavity. The present invention transmits the smoke to the heat exchange cavity through the smoke flow gas path, collects the smoke and oil pollution and discharges it to an external treatment device, thereby reducing environmental pollution; and through the fluid circulation pipeline, the waste heat in the smoke is taken away to realize the waste heat utilization; in addition, the sponge sound insulation structure can reduce the exhaust noise of the main flue and increase the quietness of the kitchen.

Description

Technical Field

[0001] The invention belongs to the technical field of integrated stove cooling, and in particular relates to a waste heat recovery smoke cooler for an integrated stove. Background Art

[0002] With the continuous development of my country's economy, the development of the kitchen appliance industry has steadily improved. Related kitchen utensils have made great progress in important areas such as new design, new technology, and new functions. High-end, intelligent, high-quality, and efficient have become the focus of industry development. Integrated stoves in cooking utensils are indispensable products in the kitchen and the main force in kitchen cooking products. In 2018, the output of household integrated stoves in my country was 39.464 million units, a year-on-year increase of 4%. It can be seen that the growing consumer demand is the source of power to stimulate the upgrading of stove product technology. In the future, the development trend of integrated stoves will gradually change to the direction of category diversification, functional intelligence, overall modularization, energy saving and environmental protection.

[0003] Traditional integrated stoves mostly use side suction or deep well exhaust methods to discharge smoke. When the smoke is sucked away by the range hood fan, the remaining oil is filtered and enters the oil collection box. The smoke is then exhausted through the volute outlet without being effectively treated again. The smoke has a high temperature and a large impurity content, which causes certain environmental pollution. In addition, the oil carried by the smoke will remain at the outlet of the pipeline for a long time, forming an oil and dust accumulation area, which greatly affects the exhaust efficiency. In addition, when the smoke enters the main flue, the flow of smoke outside the main flue will generate noise, affecting the user experience. Summary of the invention

[0004] In view of the above-mentioned problems existing in the prior art, the purpose of the present invention is to provide an integrated stove waste heat recovery smoke cooler which not only has the effects of lowering the exhaust temperature, adsorbing smoke pollutants, reducing kitchen noise and reducing environmental pollution, but can also further utilize the fluid in the heat exchange tube to take away the waste heat of the flue gas and realize waste heat utilization. It has certain guiding significance and practical value for the future development direction of energy-saving, environmental protection, safety and pollution-free kitchens.

[0005] The present invention provides the following technical solution: an integrated stove waste heat recovery smoke cooler, characterized in that it includes a smoke cooler box, a heat exchange tube assembly and a multi-tube pipeline adapter, the smoke cooler box includes a front interface, a front baffle, a U-shaped heat exchanger, a rear interface and a rear baffle, and a detachable baffle is fixedly installed on the U-shaped opening side of the heat exchanger;

[0006] The front baffle, the heat exchange body, the rear baffle and the detachable baffle are assembled and installed to form a whole, a heat exchange cavity is formed inside the whole, and the heat exchange tube assembly is placed in the heat exchange cavity;

[0007] Two sets of multi-tube pipeline adapters are provided on the outer side of the detachable baffle, and the multi-tube pipelines on the two sets of multi-tube pipeline adapters pass through the detachable baffle and are connected to the heat exchange tube assembly. The two sets of multi-tube pipeline adapters and the heat exchange tube assembly are combined through a circulating pump to form a closed fluid heat exchange pipeline;

[0008] The front interface and the rear interface are fixedly mounted on the middle of the outer sides of the front baffle and the rear baffle respectively.

[0009] The integrated stove waste heat recovery smoke cooler is characterized in that a sink groove is provided on the inner side of the front baffle, a mounting hole is provided in the middle, a filter is installed in the mounting hole, an oil collecting box is provided at the bottom of the sink groove, and the oil collecting box is connected to the external environment through an oil collecting outlet.

[0010] The integrated stove waste heat recovery smoke cooler is characterized in that the inner wall of the mounting hole and the outer wall of the filter screen are interference fit.

[0011] The integrated stove waste heat recovery smoke cooler is characterized in that the heat exchange tube assembly includes a group of heat exchange tubes evenly arranged at equal intervals, and the lower part of the heat exchange tube is embedded and fixed in the installation groove set at the bottom of the heat exchange cavity.

[0012] The integrated stove waste heat recovery smoke cooler is characterized in that the two groups of multi-pipe pipeline adapters are placed up and down, and each group of multi-pipe pipeline adapters includes a pipeline connection block with a cavity structure inside, and multi-pipe interfaces and single-pipe interfaces respectively arranged on both sides of the pipeline connection block, and the multi-pipe interface and the single-pipe interface are connected through the cavity structure arranged inside the pipeline connection block.

[0013] The integrated stove waste heat recovery smoke cooler is characterized in that the multi-pipe interfaces in the upper and lower groups of multi-pipe pipeline adapters are respectively connected to the upper and lower ends of the heat exchange tubes in the heat exchange tube assembly, and the single-pipe interfaces of the upper and lower groups of multi-pipe pipeline adapters are connected through an external circulation pump. The upper and lower groups of multi-pipe pipeline adapters and the heat exchange tube assembly form a fluid circulation pipeline through the external circulation pump.

[0014] The integrated stove waste heat recovery smoke cooler is characterized in that the front interface and the rear interface have the same shape and are symmetrically placed along the center line of the length direction of the heat exchange cavity. The front interface and the rear interface are connected to the heat exchange cavity through the air path through holes opened inside to form a smoke flow path, and a sponge sound insulation structure is attached to the wall of the air path through holes.

[0015] By adopting the above technology, compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] The present invention forms a flue gas flow path through a combination of a front interface, a rear interface and a heat exchange cavity, transmits the flue gas to the heat exchange cavity, filters the oil smoke through a filter, collects the smoke and oil in an oil collecting box, and discharges it to an external treatment device through an oil collecting outlet, thereby reducing environmental pollution; and through the set heat exchange cavity, the residual heat in the smoke is taken away by the fluid circulation pipeline formed between the heat exchange tube assembly and the external multi-tube pipeline adapter, so as to realize the utilization of the residual heat, which has certain guiding significance and practical value for the future development trend of energy-saving and environmentally friendly integrated stove design and safe and pollution-free kitchen space; in addition, through the sponge sound insulation structure attached to the wall of the air path through hole in the front interface and the rear interface, the exhaust noise of the main flue can be reduced, thereby increasing the quietness of the kitchen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the front baffle and filter structure of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the multi-tube pipeline switching device of the present invention;

[0020] Figure 4 It is a schematic diagram of the internal structure of the heat exchange cavity of the present invention;

[0021] Figure 5 It is a schematic diagram of the detachable baffle structure of the present invention;

[0022] Figure 6 It is a schematic diagram of the sponge sound insulation structure of the present invention;

[0023] Figure 7 It is a schematic diagram of the heat exchange principle structure of the system of the present invention.

[0024] In the figure: 1. front interface; 2. front baffle; 201. sink; 202. installation hole; 203. filter; 204. oil collecting box; 205. oil collecting outlet; 3. heat exchanger; 301. installation slot; 4. rear interface; 5. rear baffle; 6. removable baffle; 601. installation hole; 7. multi-pipeline adapter; 701. pipeline connection block; 702. multi-pipe interface; 703. single-pipe interface; 8. heat exchange tube; 9. sponge sound insulation structure. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments of the specification. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] On the contrary, the present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention as defined by the claims. Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the detailed description of the present invention below. Those skilled in the art can fully understand the present invention without the description of these details.

[0027] See also Figure 1-7 A smoke cooler for waste heat recovery of an integrated stove comprises a smoke cooler housing, a heat exchange tube assembly and a multi-tube pipe adapter 7. The smoke cooler housing comprises a front interface 1, a front baffle 2, a U-shaped heat exchanger 3, a rear baffle 5 and a rear interface 4 which are fixedly connected in sequence. The front interface 1 and the rear interface 4 are respectively fixedly installed in the middle of the outer sides of the front baffle 2 and the rear baffle 5. The entire device structure has a length of 235 mm, a width of 200 mm, a height of 205 mm, and an air flow inlet diameter of 70 mm.

[0028] A removable baffle 6 is fixedly installed on the U-shaped opening side of the heat exchanger 3 and fixed by four screws. The thickness of the removable baffle 6 is 30 mm.

[0029] The front baffle 2, the heat exchange body 3, the rear baffle 5 and the detachable baffle 6 are assembled and installed to form a whole, a heat exchange cavity is formed inside the whole, and the heat exchange tube assembly is placed in the heat exchange cavity.

[0030] The front interface 1 and the rear interface 4 are respectively welded and fixed on the middle part of the outer side of the front baffle 2 and the rear baffle 5; the front interface 1 and the rear interface 4 have the same shape and are symmetrically placed along the center line of the length direction of the heat exchange cavity. The front interface 1 and the rear interface 4 are connected to the heat exchange cavity through the air path through holes opened inside to form a flue gas flow path. A sponge sound insulation structure 9 is attached to the wall of the air path through hole, which can reduce the exhaust noise of the main flue and increase the quietness of the kitchen.

[0031] A sink groove 201 is provided on the inner side of the front baffle 2, and a mounting hole 202 is provided in the middle. A filter screen 203 is installed in the mounting hole 202 by interference fit. An oil collecting box 204 is provided at the bottom of the sink groove 201, and the oil collecting box 204 is connected to the external environment through an oil collecting outlet 205; the smoke is transmitted to the heat exchange cavity, the oil smoke is filtered through the filter screen, the smoke and oil pollution are precipitated and collected in the oil collecting box, and discharged to the external treatment device through the oil collecting outlet, thereby reducing environmental pollution.

[0032] The heat exchange tube assembly is placed in the heat exchange cavity, and the heat exchange tube assembly includes four heat exchange tubes 8 evenly arranged at equal intervals. The lower part of the heat exchange tube 8 is embedded and fixed in the installation groove 301 at the bottom of the heat exchange cavity. The installation groove 301 has a diameter of 10 mm and a length of 275 mm, which fits tightly with the surface of the heat exchange tube 3-2.

[0033] Two groups of multi-pipe pipeline adapter devices 7 are provided on the outer side of the removable baffle 6, and the two groups of multi-pipe pipeline adapter devices 7 are placed up and down. Each group of multi-pipe pipeline adapter devices 7 includes a pipeline connection block 701 with a cavity structure inside, and a multi-pipe interface 702 and a single-pipe interface 703 respectively arranged on both sides of the pipeline connection block 701. The multi-pipe interface 702 and the single-pipe interface 703 are connected through the cavity structure inside the pipeline connection block 701. The material of the multi-pipe interface 702 and the single-pipe interface 703 are both copper materials with a wall thickness of 1.5 mm.

[0034] The multi-pipe interface 702 in the upper and lower groups of multi-pipe pipeline adapter devices 7 extends along the installation holes 601 to the interior of the heat exchange cavity and is connected to the upper and lower ends of the heat exchange tubes 8 in the heat exchange tube assembly, wherein the installation holes 601 are 8 in number, evenly arranged, with a gap distance of 40 mm and an opening diameter of 15 mm. The 4 openings at the lower end are fluid inlets, and the 4 openings at the upper end are fluid outlets; the multi-pipe interface 702 has 4 tubes, all with a diameter of 15 mm, which are tightly fitted with the openings on the surface of the detachable baffle 6. The single-pipe interface 703 is a single pipeline with a diameter of 30 mm to realize the inflow and outflow of fluid; the single-pipe interfaces 703 of the upper and lower groups of multi-pipe pipeline adapter devices 7 are connected through an external circulation pump; the two groups of multi-pipe pipeline adapter devices 7 and the heat exchange tube assembly are combined through the circulation pump to form a closed fluid heat exchange pipeline to carry away the waste heat in the smoke and realize the utilization of waste heat.

[0035] The energy efficiency calculation of the waste heat recovery dust cooler satisfies the law of energy conservation, and the flue gas inlet temperature T s1 , flue gas outlet temperature T s2 The inlet and outlet temperatures of the nanofluid in the heat exchange tube are set to T1 and T2 respectively, and the heat transfer coefficient between the fluid and the flue gas is h nf-sk , the heat transfer coefficient between the fluid and the external environment is K nf-amb , the ambient temperature is T0, and the process energy balance equation is:

[0036]

[0037] The thermal efficiency expression is:

[0038] Among them, A1, A2, A3 are the cross-sectional areas of the flue gas pipeline, the inner wall cross-sectional areas and the outer wall cross-sectional areas of the nanofluid pipeline, respectively. sk is the smoke density (kg / m^3), C p,sk is the specific heat capacity of flue gas (J / kg.K), and U is the flue gas inlet velocity (m / s).

[0039] When the device is working, the oil smoke enters the device from the front interface 1, and the smoke and oil in the smoke are efficiently filtered out by the filter 203, and enter the oil collecting box 204, and are discharged to the external processing device through the oil collecting outlet 205. The gas with heat enters the heat exchange cavity, and driven by the external circulation pump, the waste heat in the smoke is taken away through the circulation pipeline formed between the heat exchange tube assembly and the external multi-pipeline adapter, so as to realize the waste heat utilization.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated stove waste heat recovery smoke cooler, characterized in that It comprises a flue gas cooler housing, a heat exchange tube assembly and a multi-tube pipeline adapter (7), wherein the flue gas cooler housing comprises a front interface (1), a front baffle (2), a U-shaped heat exchanger (3), a rear interface (4) and a rear baffle (5), and a detachable baffle (6) is fixedly installed on the U-shaped opening side of the heat exchanger (3); The front baffle (2), the heat exchange body (3), the rear baffle (5) and the detachable baffle (6) are assembled and installed to form a whole, a heat exchange cavity is formed inside the whole, and the heat exchange tube assembly is placed in the heat exchange cavity; Two groups of multi-pipeline adapters (7) are provided on the outer side of the detachable baffle (6); the multi-pipeline adapters on the two groups of multi-pipeline adapters (7) pass through the detachable baffle (6) and are connected to the heat exchange tube assembly; the two groups of multi-pipeline adapters (7) and the heat exchange tube assembly are combined through a circulating pump to form a closed fluid heat exchange pipeline; The front interface (1) and the rear interface (4) are respectively fixedly mounted on the middle of the outer sides of the front baffle (2) and the rear baffle (5); The heat exchange tube assembly comprises a group of heat exchange tubes (8) arranged evenly at equal intervals, and the lower part of the heat exchange tube (8) is embedded and fixedly installed in a mounting groove (301) provided at the bottom of the heat exchange cavity; Two groups of multi-pipeline adapter devices (7) are placed one above the other. Each group of multi-pipeline adapter devices (7) comprises a pipeline connection block (701) having a cavity structure inside, and a multi-pipeline interface (702) and a single-pipeline interface (703) respectively arranged on both sides of the pipeline connection block (701). The multi-pipeline interface (702) and the single-pipeline interface (703) are connected via the cavity structure arranged inside the pipeline connection block (701). The multi-pipe interfaces (702) in the upper and lower groups of multi-pipe pipeline adapter devices (7) are respectively connected to the upper and lower ends of the heat exchange tubes (8) in the heat exchange tube assembly, and the single-pipe interfaces (703) of the upper and lower groups of multi-pipe pipeline adapter devices (7) are connected through an external circulation pump. The upper and lower groups of multi-pipe pipeline adapter devices (7) and the heat exchange tube assembly form a fluid circulation pipeline through the external circulation pump; The front interface (1) and the rear interface (4) have the same shape and are symmetrically placed along the center line in the length direction of the heat exchange cavity.

2. The integrated stove waste heat recovery smoke cooler according to claim 1 is characterized in that The front baffle (2) is provided with a sink groove (201) on the inner side thereof, a mounting hole (202) is provided in the middle thereof, a filter screen (203) is installed in the mounting hole (202), an oil collecting box (204) is provided at the bottom of the sink groove (201), and the oil collecting box (204) is connected to the external environment through an oil collecting outlet (205).

3. The integrated stove waste heat recovery smoke cooler according to claim 2 is characterized in that The inner wall of the mounting hole (202) and the outer wall of the filter screen (203) are interference-fitted.

4. The integrated stove waste heat recovery smoke cooler according to claim 1 is characterized in that The front interface (1) and the rear interface (4) are connected to the heat exchange cavity through the gas path through holes provided inside, thereby forming a flue gas flow path, and a sponge sound insulation structure (9) is attached to the wall of the gas path through holes.

5. The integrated stove waste heat recovery smoke cooler according to claim 1 is characterized in that The detachable baffle (6) is provided with a mounting hole (601) for facilitating the installation of the multi-pipe interface (702).

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