CN215259945U - Flue gas waste heat comprehensive utilization device for placing flue gas cooking bench or integrating flue gas cooking bench with cooking bench - Google Patents

Abstract

A comprehensive utilization device for flue gas waste heat placed on a flue gas cooking bench or integrated with the cooking bench comprises a shell, a flue gas and water waste heat utilization channel, an inner combustion chamber formed by invagination of a shell wall, a burner arranged in the inner combustion chamber and a combustion vortex device, wherein the shell at the top of the inner combustion chamber is used for supporting a cooker, and the burner is arranged at the bottom of the inner combustion chamber or on the shell; the utility model discloses make full use of gas-cooker culinary art waste heat, keep warm or the bathing hot water supply is carried out through the waste heat.

Description

Flue gas waste heat comprehensive utilization device for placing flue gas cooking bench or integrating flue gas cooking bench with cooking bench

Technical Field

The utility model relates to an energy equipment field, specific flue gas waste heat comprehensive utilization device that supplies flue gas cooking bench to place or with cooking bench an organic whole that says so.

Background

In the cooking of families, hotels, restaurants and the like, a gas stove or a multifunctional cooking bench is generally adopted, a wall-mounted stove is adopted for heating, and bathing hot water is supplied through a gas water heater.

The conventional gas stove is provided with a point type, a ring type, a belt type and a grid type combustion head, the size of an air valve is adjusted through the adjustment of a proportional valve, gas is combusted in air to heat a cooker to be heated, and the problem exists in the combustion cooking process of the gas stove:

one, the function is single, only has the function of cooking.

And secondly, the combustion device belongs to natural combustion, the combustion is incomplete, and the gas is wasted.

And thirdly, the smoke exhaust ventilator extracts combustion heat and discharges the combustion heat to the flue, so that the temperature in the flue is high, and the decoration of the outside of the flue is damaged.

Fourthly, the flame or high-temperature gas generated in the combustion process only briefly contacts the heated objects, the temperature of the flame or the high-temperature gas is not reduced, and most of the heat is dissipated.

The heating of the gas water heater, the wall-mounted stove, the household heating gas stove, the small gas water heater and the gas stove is realized by adjusting the size of the air valve through the adjustment of the proportional valve, and the gas is combusted in the air to heat the facilities to be heated. The gas water heater, the wall-mounted furnace and the like are provided with heat exchangers, and high-temperature gas generated by the inner combustion chamber is used for heating the inside of the top end of the combustion chamber by folding a plurality of sections of parallel pipes or a plurality of inner water-through circular pipes or circular pipes with fins on the outer walls. The fins are a plurality of round or rectangular thin metal sheets which are perpendicular to the outer wall of the round pipe and are arranged in parallel and densely, the fins are heated, the temperature of the fins is increased, heat is transferred to the round pipe, and the round pipe heats water in the pipe through conduction.

The problems in the arrangement of the heat exchanger and the heat exchange process are as follows:

firstly, the contact time of the hot gas with the copper pipe and the fin is short, and the hot gas has high temperature after contact. The temperature of the copper pipe and the fins is not increased much, and the copper pipe and the fins need to be heated for a long time to reach higher temperature.

And secondly, the contact area of the circular tube is only one circle of the thickness of the fin, if the welding is not in place, the contact surface is smaller, and the heat conduction efficiency is lower.

And thirdly, the water in the copper pipe only has the contact area with the pipe wall, so that the contact area is small, the heat transfer speed is low, and the heat efficiency is low. Only one point in the heating pipe is heated each time, the fuel gas consumption is large, and the heat energy cannot be fully utilized in a short time.

Fourthly, the speed of transferring heat to water by combustion is slow.

Fifthly, the round pipe heats water in the pipe through conduction, and the heating water amount is small.

The following problems of the heat exchanger include the following problems of a gas water heater, a wall-mounted boiler, a household heating gas furnace, a small gas water heater, and a gas furnace:

firstly, when gas is burnt, the noise is larger. Some parts are silent, and the price is high.

And secondly, the water storage amount is small, and the water heating speed is low. So that the water used in each time flows from the water with low temperature for a while, and then the heating is started. If the user washes hands, the user starts the machine for a while, flows cold water for a while, and only when the machine is started, hot water is available, and the user washes hands with the hot water.

Thirdly, the cold and hot changes are large: especially in the process of bathing, the intermittent water cut-off can lead to the temperature to reduce, and the stable result of use of no electric water heater temperature is good. If the water heater is not used for a while, the water heater needs to be started after gas combustion, the water consumption is large, otherwise, the water heater can be used for cooling water when the water heater is started, and the water heater is hot and cold when used for bathing, and the temperature difference is large.

And fourthly, when the bathing machine is started, cold water needs to be put for a while, hot water comes out, and the cold water is wasted.

Fifthly, the gas heating can not be controlled by the water temperature, but the water flow is started, and the water temperature can not be started even if the water flow is low.

And sixthly, when the water flow is small, the gas water heater does not work.

Seventhly, copper is easy to rust, the fine tube is easy to block, the flow is reduced, the cleaning difficulty is high, the copper needs to be replaced generally, and the cost is high.

Eighthly, the usage is single. The bathing can not be used for heating.

Ninth, after the indoor heat of the wall-mounted boiler reaches the requirement, the air consumption is high and the cost is high.

The water retention amount is small, the equipment basically rarely adopts all-directional heat preservation, and only has the anti-freezing effect.

And water vapor generated in the gas engine cannot be collected and discharged by a condensed water collecting pipeline, so that waste is caused and the appearance is influenced.

Eleventh, when used in a narrow area, the phenomenon of oxygen excess and oxygen deficiency in the room occurs.

Twelve, most of the gas is not fully combusted, and the loss is large.

Thirteen, high temperature and low heat utilization rate during tail gas emission. If the temperature is reduced, the equipment is complex and the price is high.

Fourteen, the water switch is frequently turned on and off, so that the water heater is frequently started and stopped, the heating is not in place during each combustion, the temperature is reduced, the heating times are more, and the heating effect is poor. The heat is wasted greatly.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a supply flue gas cooking bench to place or with integrative flue gas waste heat comprehensive utilization device of cooking bench, make full use of gas-cooker culinary art waste heat, keep warm, the bathing through the waste heat, cook for life use hot water supply such as.

In order to solve the technical problem, the utility model discloses a concrete scheme does: a comprehensive utilization device for flue gas waste heat placed on a flue gas cooking bench or integrated with the cooking bench comprises a shell, a flue gas and water waste heat utilization channel, an inner combustion chamber formed by invagination of a shell wall, a burner arranged in the inner combustion chamber and a combustion vortex device, wherein the shell at the top of the inner combustion chamber is used for supporting a cooker, and the burner is arranged at the bottom of the inner combustion chamber or on the shell;

a waste heat utilization channel and a flue gas channel are arranged on the periphery of the inner combustion chamber; the smoke channel is provided with a smoke inlet which is connected with the inner combustion chamber, so that high-temperature smoke generated in the inner combustion chamber is discharged after passing through the smoke channel; the waste heat utilization channel is provided with a water inlet for cold water to enter and a water outlet for hot water to be discharged, and the cold water is heated by the waste heat of the smoke in the smoke channel after sequentially passing through the water inlet and the water outlet.

Preferably, the flue gas and water waste heat utilization channel is an inner channel formed by the inner wall space of a coil group or a tube bank group arranged in the shell and an outer channel formed between the inner wall of the shell and the outer wall space of the coil group or the tube bank group; the coil group is formed by one or more pipelines in a spiral, bending, parallel or folding combination mode, and the tube row group is formed by one or more flat tube rows or plates in a bending, rotating, folding or spiral combination mode; when the flue gas passes through the inner channel, the waste heat utilization channel is an outer channel, and when the flue gas passes through the outer channel, the waste heat utilization channel is an inner channel.

Preferably, the coil group or the tube row group is provided with a plurality of fins for increasing heat exchange efficiency, the fins are strip-shaped and distributed along the length direction of the coil group or the tube row group, or the fins are ring-shaped and distributed along the circumference of the coil group or the tube row group.

Preferably, the coil group or the tube bank group is provided with a plurality of fins for increasing heat exchange efficiency, and the fins are arranged on the outer wall, the inner wall or distributed through the tube wall of the tube.

Preferably, the combustion vortex device adopts a blowing device, a pipeline capable of blowing air and oxygen can be arranged on the inner side of the inner combustion chamber, and an opening in the lateral direction and the circular tangent direction is formed, so that the middle and lower parts of the flame are blown to form a combustion vortex which rotates upwards and downwards, and a combustion vortex which rotates upwards horizontally or laterally is formed, the gas is conveniently and fully combusted, the gas is saved, and the combustion room temperature and the flue gas temperature are improved.

Preferably, a temperature control water pump is arranged at the water inlet or the water outlet, and a temperature control exhaust pump is arranged at the smoke outlet.

Preferably, the water outlet is directly used by introducing water to the outside or is connected with a hot water storage tank through a control valve, the position of the flue gas and water waste heat utilization channel corresponding to the water outlet is also provided with a temperature measuring element, and the temperature measuring element is in signal connection with the controller so that the control valve is closed by the controller after the temperature of the position of the flue gas and water waste heat utilization channel corresponding to the water outlet reaches the standard or is insufficient.

The utility model discloses when cooking, can produce hot water and be used for cooking, bathing, hot water for the heating installation, a top of a kitchen range can replace gas heater, hanging stove etc. and burning vortex device forms the burning vortex of upwards downward rotation again, level or the burning vortex that upwards rotates upwards to flame middle and lower part blast air, practices thrift the gas and improves combustion chamber temperature and flue gas temperature. The produced high-temperature water is stored in a hot flue gas waste heat utilization device or a hot water storage water tank for reuse. When the temperature is not up to the requirement, the operation is carried out by measures such as reducing the water passing amount, increasing the gas consumption or increasing the water passing amount and reducing the gas consumption when the temperature is over. If one cooking bench is provided with two internal combustion chambers, the two flue gas waste heat utilization devices can be used independently or in series, and any flue gas waste heat utilization device can be used as a hot water storage tank.

The utility model can be used for cooking, bathing and warming in large-scale restaurants and hotels. The water flow and the gas flow are adjusted, the water temperature of the supplied water is fixed in a certain range, and the water is concentrated in the flue gas storage waste heat utilization device or the hot water storage tank. And when the temperature does not meet the requirement, the water is added for water supply, the gas consumption is reduced and the like. A plurality of cooking benches are connected in parallel and directly connected with a hot water storage tank. If the hot water in the flue gas waste heat utilization device flows outwards, the hot water can be directly used or can be stored in a hot water tank. Especially, the strong heating is carried out once for cooking in winter, thereby greatly saving the heating cost. The fuel gas and the electric energy are saved. Can also be used as bathing water.

The utility model is used for the heat that several gas-cooker produced when family, hotel are used for cooking, can directly be used for the bathing for the heating uses hot water. A great deal of cost can be saved each year.

The utility model discloses can the exclusive use directly put on the gas-cooker, switch on water pipe and flue gas delivery pipe, power. And a spare hot water storage tank can be installed if necessary. Or a burner is arranged to form a cooking bench.

Drawings

Fig. 1 is a schematic top view of embodiment 1 of the present invention;

fig. 2 is a schematic side sectional structure view of embodiment 1 of the present invention;

fig. 3 is a schematic side sectional structure view of embodiment 2 of the present invention;

fig. 4 is a schematic top view of embodiment 3 of the present invention;

fig. 5 is a schematic top view of embodiment 4 of the present invention;

the labels in the figure are: 1. the device comprises a water inlet, 2, fins, 3, a flue gas channel, 4, a shell, 5, a flue gas outlet, 6, a water outlet, 7, a combustor, 8, an inner combustion chamber, 9, a flue gas inlet, 10, a waste heat utilization channel, 11, a cooker, 12, a hot water storage box, 13, a heating water tank, 14, a tube bank, 15 and a tube bank plate.

Detailed Description

The utility model discloses mainly include casing 4 and interior combustion chamber (interior installation by combustor 7 or place still on the gas-cooker of installation), sunken interior combustion chamber 8 in casing 4, combustor 7 is located the bottom of interior combustion chamber 8, the casing 4 of 8 top positions in interior combustion chamber is used for supporting pan 11, adjust the valve size through adjusting the proportional valve, adjustment burning vortex device makes the gas combustion more abundant and improve the temperature of the interior and indoor flue gas of combustion chamber, practice thrift the gas quantity, thereby adjust culinary art flame size, cook pan 11 heating. Furthermore, the utility model discloses in still be equipped with waste heat utilization passageway 10 and flue gas passageway 3 in the periphery of interior combustion chamber 8. The flue gas channel 3 is provided with a flue gas inlet 9, and the flue gas inlet 9 is connected with the inner combustion chamber 8, so that high-temperature flue gas generated in the inner combustion chamber 8 is discharged after passing through the flue gas channel 3; the waste heat utilization channel 10 is provided with a water inlet 1 for cold water to enter and a water outlet 6 for hot water to be discharged, and the cold water passes through the water inlet 1 and the water outlet 6 in sequence and then is heated by the waste heat of the smoke in the smoke channel 3. Through the combination of the smoke channel 3 and the waste heat utilization channel 10, a certain amount of water is heated in the cooking process, so as to supply the heating or bathing or cooking requirements. The technical solution of the present invention is further illustrated by four embodiments as follows:

example 1

As shown in fig. 1, the flue gas channel 3 in this embodiment is a pipe, which is bent to form a coil; the waste heat utilization passage 10 is a space formed between the inner wall of the housing 4 and the outer wall of the pipeline. In order to further utilize the waste heat resource in the inner combustion chamber 8, as shown in fig. 2, in this embodiment, three sets of coils are arranged in the casing 4, the three sets of coils are arranged in parallel to form a tube bank, all the coils are connected to the same flue gas bag provided with the flue gas inlet 9 connected with the inner combustion chamber 8, or all the coils are respectively provided with the flue gas inlet 9 connected with the inner combustion chamber 8, or all the coils are sequentially connected in series or in parallel. The end parts of all the coil pipes far away from the flue gas inlet 9 are connected to the same flue gas outlet 5, and the flue gas outlet 5 is connected with a building flue for discharging cooled flue gas. Through the setting mode of above a plurality of coils, greatly increased the interior waste heat of internal combustion chamber 8 through flue gas passageway 3 and exhaust stroke, still can set up one or more spare water waste heat utilization device 12 and preheat the cold water that gets into waste heat utilization device to the flue gas after the cooling through waste heat utilization device. So that the flue gas waste heat is fully utilized.

For further improving the heat exchange efficiency between flue gas in the pipeline and the outer water of pipeline, be equipped with a plurality of fins 2 that are used for increasing heat exchange efficiency on the pipeline of this embodiment. The fins 2 are strip-shaped and distributed along the length direction of the pipeline, or the fins 2 are annular and distributed along the circumferential direction of the pipeline. Meanwhile, the fins 2 can also be arranged on the outer wall and the inner wall of the pipeline or distributed through the pipe wall of the pipeline.

Example 2

As shown in fig. 3, two tube row plates 15 are disposed in the casing 4 and spirally spaced around the inner combustion chamber 8, and the upper and lower sides of the two tube row plates 15 are sealed or respectively sealed with the inner wall of the casing 4. A flue gas channel 3 is formed between the two tube row plates 15, and the waste heat utilization channel 10 is a space formed between the inner wall of the shell 4 and the outer wall of the tube row plate 15. In this embodiment, the indirect contact area between the flue gas channel 3 and the waste heat utilization channel 10 is greatly increased, the contact stroke between the flue gas in the flue gas channel 3 and the water in the waste heat utilization channel 10 is also greatly increased in a unit space, and the waste heat utilization efficiency is further increased.

The gap between the inner ends of the two tube row plates 15 in the embodiment is connected with the inner combustion chamber 8 to form a smoke inlet 9. The burner 7 makes the flame generated by the burner rotate horizontally or laterally upwards to ascend and rotate upwards and downwards, so that the smoke can be conveniently swirled together to enter the smoke channel 3 from the smoke inlet 9.

Example 3

As shown in fig. 4, a plurality of annular tube rows 14 are provided in the casing 4, and the tube rows 14 are arranged so as to be centered around the inner combustion chamber 8. In the gap between two adjacent tube rows 14, the flue gas channel 3, the waste heat utilization channel 10 and the flue gas channel 3 … … which are arranged at intervals and staggered intervals are formed in sequence by radiating outwards from the closest inner combustion chamber 8. All the waste heat utilization channels 10 are connected with the inner combustion chamber 8 directly or through pipelines, and all the waste heat utilization channels 10 are connected with the same heating water tank 13.

Although the section of the flue gas channel 3 in the embodiment is long, the two sides of the flue gas channel are in large-area indirect contact with water in the waste heat utilization channel 10, and the flue gas channel also has high heat transfer efficiency.

In this embodiment, a water pump (not shown) is disposed at the water outlet 6. The exhaust gas outlet is provided with an exhaust pump. The position of the water outlet 6 is connected with a hot water storage tank 12 through a control valve (not shown in the figure), and the water outlet 6 is also provided with a temperature measuring element (not shown in the figure). The temperature measuring element is in signal connection with the controller, so that the controller opens the control valve after the temperature of the water outlet 6 reaches the standard. Under the condition that the gas stove is used for a long time in hotels, restaurants and the like, the waste heat of the gas is more fully utilized, and cold water is continuously heated to form bathing supply under the condition that a plurality of hot water storage tanks 12 are arranged.

Example 4

As shown in fig. 5, the main structure of this embodiment 1 is the same as that of embodiment 1 except that this embodiment has two inner combustion chambers 8 and two burners 7. The three smoke channels 3 are respectively connected with the two inner combustion chambers 8. The housing 4 is connected at a position between the two inner combustion chambers 8 and forms an integrated waste heat utilization channel 10. This embodiment is more suitable for the two formula gas cooking benches of conventional usefulness, in the utility model discloses other embodiments, can also set up the interior combustion chamber 8 and the combustor 7 of more quantity with the same design to satisfy the use of dining room etc..

The embodiments are described in a progressive manner, each embodiment focuses on the differences from the other embodiments, and the same and similar parts among the embodiments can be referred to each other, for example, the cyclone burner 7, the water pump, the hot water storage tank 12, the temperature measuring element, the controller and the like are adopted. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. The utility model provides a supply flue gas cooking bench to place or with integrative flue gas waste heat comprehensive utilization device of cooking bench which characterized in that: the device comprises a shell (4), a flue gas and water waste heat utilization channel, an inner combustion chamber (8) formed by invaginating a shell wall, a burner arranged in the inner combustion chamber (8) and a combustion vortex device, wherein the shell (4) at the top of the inner combustion chamber (8) is used for supporting a pot (11), and the burner (7) is arranged at the bottom of the inner combustion chamber (8) or on the shell (4);

a waste heat utilization channel (10) and a flue gas channel (3) are arranged on the periphery of the inner combustion chamber (8); the flue gas channel (3) is provided with a flue gas inlet (9), and the flue gas inlet (9) is connected with the inner combustion chamber (8) so as to discharge high-temperature flue gas generated in the inner combustion chamber (8) after passing through the flue gas channel (3); the waste heat utilization channel (10) is provided with a water inlet (1) for cold water to enter and a water outlet (6) for hot water to be discharged, and the cold water passes through the water inlet (1) and the water outlet (6) in sequence and then is heated by the waste heat of the smoke in the smoke channel (3).

2. The device of claim 1 for comprehensive utilization of the residual heat of flue gas for placement of a flue gas cooking stove or integration of the flue gas cooking stove with the cooking stove, wherein: the flue gas and water waste heat utilization channel is an inner channel formed by the inner wall space of a coil group or a tube bank group arranged in the shell and an outer channel formed between the inner wall of the shell and the outer wall space of the coil group or the tube bank group; the coil group is formed by one or more pipelines in a spiral, bending, parallel or folding combination mode, and the tube row group is formed by one or more flat tube rows or plates in a bending, rotating, folding or spiral combination mode; when the smoke passes through the inner channel, the waste heat utilization channel (10) is an outer channel, and when the smoke passes through the outer channel, the waste heat utilization channel (10) is an inner channel.

3. The device of claim 2 for comprehensive utilization of the residual heat of flue gas for placement of a flue gas cooking stove or integration of the flue gas cooking stove with the cooking stove, wherein: the coil group or the tube row group is provided with a plurality of fins (2) for increasing heat exchange efficiency, the fins (2) are strip-shaped and distributed along the length direction of the coil group or the tube row group, or the fins (2) are annular and distributed along the circumference of the coil group or the tube row group.

4. The device of claim 2 for comprehensive utilization of the residual heat of flue gas for placement of a flue gas cooking stove or integration of the flue gas cooking stove with the cooking stove, wherein: the coil group or the tube bank group is provided with a plurality of fins (2) for increasing heat exchange efficiency, and the fins (2) are arranged on the outer wall and the inner wall of the pipeline or distributed on the wall of the pipeline.

5. The device of claim 1 for comprehensive utilization of the residual heat of flue gas for placement of a flue gas cooking stove or integration of the flue gas cooking stove with the cooking stove, wherein: the combustion vortex device adopts a blower device, a pipeline capable of blowing air and sending oxygen and an opening in the lateral direction and the circular tangent direction can be arranged on the inner side of the inner combustion chamber (8), the middle and lower parts of the flame are blown to form combustion vortex which rotates upwards and downwards, and combustion vortex which rotates upwards horizontally or laterally, so that the gas can be combusted fully, the gas is saved, and the combustion room temperature and the flue gas temperature are improved.

6. The device of claim 1 for comprehensive utilization of the residual heat of flue gas for placement of a flue gas cooking stove or integration of the flue gas cooking stove with the cooking stove, wherein: and a temperature control water pump is arranged at the water inlet (1) or the water outlet (6), and a temperature control exhaust pump is arranged at the smoke outlet.

7. The device of claim 1 for comprehensive utilization of the residual heat of flue gas for placement of a flue gas cooking stove or integration of the flue gas cooking stove with the cooking stove, wherein: the water outlet (6) is directly used by externally passing water or is connected with a hot water storage tank (12) through a control valve, the flue gas and water waste heat utilization channel position corresponding to the water outlet (6) is also provided with a temperature measuring element, and the temperature measuring element is in signal connection with the controller so that the control valve is closed by the controller after the temperature of the flue gas and water waste heat utilization channel position corresponding to the water outlet (6) reaches the standard or is insufficient.

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