CN116255648A - Adjustable waste heat recovery cooking bench - Google Patents

Abstract

The invention relates to the technical field of kitchen ware, in particular to an adjustable waste heat recovery cooking bench, which comprises: the heat exchange device comprises a plurality of hollow cavities internally provided with spiral channels, and utilizes the spiral and reciprocating motion of smoke in the heat exchange device to exchange heat to the medium in the thin water pipe to the greatest extent, so that the heat exchange efficiency is greatly improved.

Description

Adjustable waste heat recovery cooking bench

Technical Field

The invention relates to the field of kitchen ware, in particular to an adjustable waste heat recovery cooking bench.

Background

At present, gas cookers using natural gas and liquefied petroleum gas are popular, in the use process of the gas cookers, a direct heating mode is generally adopted, so that flames of the gas cookers are exposed in air, the flames are in contact with the air, a large amount of heat is lost, meanwhile, the burnt flue gas is directly discharged outside through a range hood or an exhaust fan, the flue gas waste heat is directly lost, the flue gas waste heat cannot be fully utilized, and therefore the combustion efficiency of gas combustion is low.

With further development of science and technology and productivity, kitchen cookware is gradually energy-saving and intelligent, and certainly, the innovation and upgrading of stoves are not only embodied on the diversification of energy supply modes. At present, the oven has various upgrading functions, but the heat loss energy of the oven in the prior art is up to 70%, and a large amount of energy is wasted; the direct exhaust of the smoke heat not only can cause a certain influence on the surrounding environment, but also can cause the working environment of a cook to be influenced by high temperature to a certain extent and cause the heat loss of a stove; and the existing waste heat recovery devices cannot realize automatic adjustment, namely cannot be adjusted in a changing way along with temperature and pressure, so that the recovered heat is too low, and the energy cannot be fully utilized.

Disclosure of Invention

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a method for recovering excessive light from a hearth by adjusting the degree of waste heat recovery by the temperature and pressure in the hearth, thereby achieving maximum efficiency and most environmental protection.

An adjustable waste heat recovery cooktop comprising: the utility model provides a kitchen range casing, flue gas recovery unit, pressure valve, flue gas pipeline, heat transfer device, thin water pipe, the kitchen range casing is "L" form frame, be provided with two tap on the wall of kitchen range casing, two kitchen range cavitys have been seted up to the lower extreme of kitchen range casing, one side of kitchen range casing is equipped with adjust knob, the bottom of kitchen range cavity is equipped with the burner, flue gas recovery unit includes exhaust port, adjusting part, isolation layer and exhaust port house steward, flue gas recovery unit sets up the middle part position at the kitchen range cavity, flue gas recovery unit upper end portion is provided with evenly runs through and is equipped with the exhaust port, flue gas recovery unit's upper end is evenly nested to be equipped with four adjusting part, the upper end of adjusting part runs through and is equipped with the exhaust port, and the inside of adjusting part is equipped with horizontal through-hole, the inside of horizontal through-hole both sides just being located the adjusting part all is equipped with the spring spacer, flue gas recovery unit's bottom is equipped with the isolation layer, the inside of kitchen range cavity is hollow structure, the exhaust port house steward is the exhaust port is the cavity, and is the cavity between flue gas device upper end and the lower extreme, evenly runs through the exhaust port is equipped with the pressure valve body, evenly runs through the exhaust port, two end sets of arc-shaped valve body has the arc-shaped valve body, the arc-shaped valve body is located down, and the arc-shaped exhaust valve body is set up.

Preferably, the whole smoke recycling device is of an annular structure, and the middle part of the smoke recycling device is provided with an inclined slope.

Preferably, an outlet is arranged on one side of the smoke outlet main pipe, and the bottom of each smoke outlet is connected with the cavity of the smoke outlet main pipe.

Preferably, the number of the transverse through holes in the adjusting part is two, the two transverse through holes have a certain height difference, the tail ends of the two arc-shaped valve bodies correspond to the two transverse through holes, and the two arc-shaped valve bodies are arranged in the pressure valve in a telescopic manner through springs.

Preferably, the distance between two adjacent smoke outlets is the same as the distance between two adjacent smoke outlets at the upper end, and a temperature sensor and a pressure sensor are arranged in the adjusting part.

Preferably, the heat exchange device is provided with five tank bodies, a flue gas spiral pipe, a heat exchange medium pipe and a flue gas outlet pipe are arranged in the heat exchange device, the flue gas spiral pipe and the heat exchange medium pipe support are of spiral structures, the flue gas spiral pipe supports the heat exchange medium pipe support, the flue gas outlet pipe is arranged in the flue gas spiral pipe and the heat exchange medium pipe support, and the top of the flue gas outlet pipe is communicated with the top of the flue gas spiral pipe.

The beneficial effects are that:

1. according to the invention, the pressure valve is arranged in the smoke recovery device to carry out adjustment on smoke recovery, the pressure and the temperature in the cavity of the cooking bench are used as reference standards to automatically carry out smoke recovery, when the temperature and the pressure in the cavity do not reach a certain degree, only a certain smoke port is opened to slowly discharge smoke, the exhaust speed is in a direct proportion relation with the rate of smoke generation, when the speed of smoke generation is faster, the pressure valve is pushed to open more smoke ports when the pressure and the temperature of the cavity are higher, so that the pressure and the temperature of the smoke in the cavity are slowly adjusted, and the problems that the recovery efficiency is not high or the cooking efficiency is influenced due to the fact that the common waste heat recovery device for the cooking bench cannot be adjusted are solved.

2. According to the invention, the pressure valve automatically adjusts along with the temperature in the cavity, so that the smoke recovery amount is in a direct proportion relation with the temperature and the pressure in the cavity, the baffle blocks of the pressure valve are provided with through holes which are regularly distributed and the relation with smoke ports is increased along with the increase of the pressure and the temperature, and the baffle blocks block the smoke ports, so that the more the flow of smoke is discharged, when the pressure and the temperature in the cavity are reduced, the baffle blocks of the pressure valve are reset to block the smoke ports, and the problem of low waste heat recovery efficiency is solved through dynamic adjustment.

3. The heat exchange device is a plurality of hollow cavities with spiral channels arranged inside, and is crossed with the heat exchange device through the horizontally arranged circulating water-thin pipes, so that the medium in the water-thin pipes is exchanged to the greatest extent by utilizing the spiral and reciprocating actions of the flue gas in the heat exchange device, and the heat exchange efficiency is greatly improved through the hollow structures of the flue gas pipelines and the pipe walls of the heat exchange device.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 is a schematic structural view of the flue gas recovery device and the pressure valve of the present invention.

Fig. 4 is a schematic view showing the internal structure of the flue gas recovery device and the pressure valve of the present invention.

Fig. 5 is a schematic structural diagram of the pressure valve and the flue gas recovery device of the present invention.

FIG. 6 is a cross-sectional view of an adjustment portion of the present invention;

fig. 7 is a schematic structural view of the flue gas duct and the heat exchange device of the present invention.

Fig. 8 is a schematic view of the structure of the water pipe and the heat exchanging device of the present invention.

Fig. 9 is a schematic view showing the internal structure of the heat exchange device of the present invention.

Reference numerals illustrate:

1. a cooktop housing; 2. a flue gas recovery device; 3. a pressure valve; 4. a flue gas duct; 5. a heat exchange device; 6. a water-thin pipe; 11. a water tap; 12. a hearth cavity; 13. an explosion-proof port; 14. an adjustment knob; 15. a fire hole; 21. a smoke outlet; 211. a lateral through hole; 212. a spring catch; 22. an adjusting section; 23. an insulating layer; 24. a smoke outlet header pipe; 31. an arc valve body; 32. adjusting a smoke outlet; 51. a flue gas spiral pipe; 52. a heat exchange medium pipe; 53. and a flue gas outlet pipe.

Detailed Description

The present invention will be further described with reference to specific embodiments and drawings, in which more details are set forth in the following description in order to provide a thorough understanding of the present invention, but it will be apparent that the present invention can be embodied in many other forms than described herein, and that those skilled in the art may make similar generalizations and deductions depending on the actual application without departing from the spirit of the present invention, and therefore should not be construed to limit the scope of the present invention in terms of the content of this specific embodiment.

As shown in fig. 1-9, an adjustable waste heat recovery cooktop apparatus, comprising: a cooking bench shell 1, a flue gas recovery device 2, a pressure valve 3, a flue gas pipeline 4, a heat exchange device 5 and a fine water pipe 6;

as shown in fig. 1-2, the stove housing 1 is a basic fixed frame of the device, the whole section is L-shaped, two water taps 11 are arranged on the L-shaped wall surface for adjusting hot water and cold water, the stove cavities 12 are two circular cavities arranged on the plane of the stove housing 1 and respectively arranged below the water taps 11, and two explosion-proof ports 13 are arranged at the top of each stove cavity 12, so that a small amount of flue gas is discharged conveniently, and explosion caused by overhigh pressure and temperature is prevented; the two adjusting knobs 14 are arranged at the front end of the hearth shell 1, so that the mixing proportion of fuel gas and air is convenient to adjust, and the activity is adjusted; the fire hole 15 is arranged at the bottom of the hearth cavity 12 and is used for discharging the mixed gas of the fuel gas and the air so as to provide flame, and the design of the multiple through holes is convenient for the fire power to be improved more quickly;

as shown in fig. 3 and 4, the flue gas recovery device 2 is annular in shape, is arranged in the middle of the hearth cavity 12, has an inclined slope in the middle of the flue gas recovery device 2, and is convenient for flue gas to strike the bottom of the pot and return to the middle of the flue gas recovery device 2 for backflow to the middle, so that the pot is heated circularly, and the efficiency is higher; the upper end part of the flue gas recovery device 2 is provided with smoke outlets 21 which are uniformly distributed, so that high-temperature flue gas can be conveniently discharged from the smoke outlets 21 when impacting the bottom of the pot for backflow; the four adjusting parts 22 are uniformly nested and arranged at the upper end part of the flue gas recovery device 2, the upper end of the adjusting part 22 is provided with a smoke outlet 21 in a penetrating way, two transverse through holes 211 are arranged in the adjusting part, the two transverse through holes 211 are arranged at two sides of the smoke outlet 21 of the adjusting part 22, the two transverse through holes 211 have a certain height difference and have the same action as the smoke outlet 21 of the flue gas recovery device 2, and the temperature sensor and the pressure sensor are arranged in the adjusting part 22, so that the resistance of the flue gas recovery device 2 when discharging flue gas can be conveniently adjusted, and the temperature and the pressure in the hearth cavity 12 are adapted; spring blocking pieces 212 are arranged on the upper side and the lower side of the transverse through hole 211 and positioned in the adjusting part 22, so that the resistance in the transverse through hole 211 can be adjusted; the insulating layer 23 is a bottom structure of the flue gas recovery device 2, and the inside of the insulating layer is of a hollow structure, so that heat insulation of flue gas is facilitated, heat conduction in other modes is prevented, and the flue gas recovery efficiency is improved; the smoke outlet main pipe 24 is a cavity between the upper end and the lower end of the smoke recovery device 2, a unique outlet is arranged for exhausting, the upper end and the lower end of the smoke recovery device 2 are of an integral structure, the bottom of each smoke outlet 21 is connected with the smoke outlet main pipe 24, and the smoke is exhausted through the outlet of the smoke outlet main pipe 24.

As shown in fig. 3, 5 and 6, the pressure valves 3 are uniformly nested and arranged at the upper end part of the flue gas recovery device 2; the body of the pressure valve 3 is arc-shaped, two ends of the body are provided with arc-shaped valve bodies 31, the two arc-shaped valve bodies 31 are positioned right below the smoke outlet 21, the two arc-shaped valve bodies 31 are provided with height differences, the tail ends of the two arc-shaped valve bodies 31 correspond to the transverse through holes 211, and the inside of the pressure valve 3 is provided with springs for supporting the two arc-shaped valve bodies 31 to extend outwards; wherein, two thirds of the length of the arc valve body 31 can be compressed to the inside of the pressure valve 3 by the pressure of the high-pressure flue gas in the hearth cavity 12; three adjusting smoke outlets 32 are uniformly arranged at the tail end of the arc valve body 31, the distance between the adjusting smoke outlets 32 is the same as the distance between the smoke outlets 21 at the upper end, when the arc valve body 31 is fully unfolded, the tail end is positioned at the transverse through hole 211 of the adjusting part 22, and the friction force and the pressure in the vertical direction are exerted by the spring baffle 212 of the adjusting part 22, when the pressure in the hearth cavity 12 is larger than the friction force of the adjusting part 22 on the arc valve body 31 and the elasticity provided by the pressure valve 3, the critical point can be adjusted by the spring baffle 212 in the adjusting part 22; in the initial state, all through holes of the smoke outlet 21 are blocked by the arc valve body 31, when the internal pressure of the hearth cavity 12 is larger than a critical point, the arc valve body 31 slowly retracts to the inside of the pressure valve 3, and the smoke outlet 32 is regulated to be overlapped with the smoke outlet 21, so that high-temperature and high-pressure smoke in the hearth cavity 12 is discharged; when the internal pressure of the hearth cavity 12 is further increased and two thirds of the arc valve body 31 enters the pressure valve 3, the smoke outlet 32 is regulated to coincide with the tail end smoke outlet 21, and the maximum value of high-temperature smoke is discharged;

as shown in fig. 7, two end branch pipes of the flue gas pipeline 4 are connected with the outlet of the hearth cavity 12, and a heat exchange device 5 is arranged in the middle of the flue gas pipeline 4; as shown in fig. 8 and 9, the heat exchange device 5 has five tanks, the tanks are communicated with the inside by the multi-layer fine water pipe 6, and the internal flue gas of the heat exchange device 5 is not in direct contact with water in the fine water pipe 6; the inside of the heat exchange device 5 is provided with a smoke spiral pipe 51, a heat exchange medium pipe 52 and a smoke outlet pipe 53, smoke enters the smoke spiral pipe 51 in the heat exchange device 5 from the hearth cavity 12 through a smoke pipeline 4, the smoke spiral pipe 51 is divided into the outside of the smoke outlet pipe 53 and the inside of the smoke outlet pipe 53 by the smoke outlet pipe 53, the smoke rises from the outside of the smoke outlet pipe 53 along the smoke spiral pipe 51 to heat the heat exchange medium pipe 52 spirally arranged on the smoke spiral pipe 51, the smoke spiral pipe 51 has the same structure as the heat exchange medium pipe support 52, the smoke spiral pipe 51 plays a role of supporting the heat exchange medium pipe support 52, and mediums can be added into the heat exchange medium pipe 52 to heat other devices; the flue gas rising to the top of the flue gas spiral pipe 51 enters the flue gas outlet pipe 53 from the top of the flue gas outlet pipe 53 and is discharged downwards (the top of the flue gas outlet pipe 53 is communicated with the top of the flue gas spiral pipe 51); and then the flue gas enters the next tank body for full heat exchange through the bottom pipeline of the heat exchange device 5 at one time, so that the efficiency reaches the maximum, and finally the flue gas after the heat exchange is finished can be discharged from the tank body at the leftmost side or the rightmost side.

The working principle of the invention is as follows:

firstly, when the hearth just works, the pressure and the temperature in the hearth cavity 12 are gradually increased, and in the process of increasing the pressure and the temperature, the smoke is only slowly exhausted through the explosion-proof port 13 and the normally open adjusting part 22, so that the pressure in the hearth cavity 12 is ensured to slowly and stably increase; the temperature sensor and the pressure sensor are arranged in the adjusting part 22, so that the resistance of the smoke recovery device 2 when discharging smoke is conveniently adjusted, the temperature and the pressure in the hearth cavity 12 are adapted, the spring baffle 212 is arranged in the adjusting part, the resistance in the transverse through hole 211 can be adjusted, in the preliminary work of the hearth, the arc valve body 31 is completely blocked by the adjusting baffle in the adjusting part 22, and the smoke outlet 21 is blocked by the arc valve body 31; the two arc valve bodies 31 are provided with height differences, springs are arranged in the pressure valve 3 to support the two arc valve bodies 31 to extend outwards, and if high-pressure flue gas in the hearth cavity 12 can press two thirds of the arc valve bodies 31 into the pressure valve 3; the tail end of the arc valve body 31 is positioned at the transverse through hole of the adjusting part 22 when the arc valve body 31 is fully unfolded, and the friction force and the pressure in the vertical direction are applied by the spring baffle 212 of the adjusting part 22, when the pressure in the hearth cavity 12 is larger than the friction force of the arc valve body 31 at the adjusting part 22 and the elastic force provided by the pressure valve 3, the critical point can be adjusted by the spring baffle 212 in the adjusting part 22; when the pressure in the hearth cavity 12 is gradually increased to a certain level (the temperature in the pot is not influenced), the arc valve body 31 can be compressed into the body of the pressure valve 3, and flue gas enters the flue gas pipeline 4 from the flue gas port main pipe 24 and then enters the heat exchange device 5; the flue gas rises from the outer side of the flue gas outlet pipe 53 along the flue gas spiral pipe 51 from the flue gas spiral pipe 51 entering the heat exchange device 5, so as to heat the heat exchange medium pipe 52 spirally arranged on the flue gas spiral pipe 51, and mediums can be added into the heat exchange medium pipe 52 to heat other devices; the flue gas rising to the top of the flue gas spiral pipe 51 enters the flue gas outlet pipe 53 from the top of the flue gas outlet pipe 53 and is discharged downwards (the top of the flue gas outlet pipe 53 is communicated with the top of the flue gas spiral pipe 51); and then the flue gas enters the next tank body for full heat exchange through the bottom pipeline of the heat exchange device 5 at one time, so that the efficiency reaches the maximum, and finally the flue gas after the heat exchange is finished can be discharged from the tank body at the leftmost side or the rightmost side.

Claims (10)

1. An adjustable waste heat recovery cooktop comprising: a hearth shell (1), a flue gas recovery device (2), a pressure valve (3), a flue gas pipeline (4) and a heat exchange device (5); the flue gas recovery device (2) is arranged in the hearth shell (1);

the method is characterized in that: the upper end of the flue gas recovery device (2) is uniformly provided with a flue gas outlet (21), and the upper end of the flue gas recovery device (2) is uniformly nested with an adjusting part (22); the upper end of the adjusting part (22) is provided with a smoke outlet (21), and a transverse through hole (211) is arranged in the adjusting part (22); spring baffle plates (212) are arranged on the upper side and the lower side of the transverse through hole (211) and positioned in the adjusting part (22), and a cavity between the upper end and the lower end of the flue gas recovery device (2) is a flue gas outlet main pipe (24); the upper end of the flue gas recovery device (2) is nested to be provided with a pressure valve (3), two ends of the pressure valve (3) are provided with arc valve bodies (31), the two arc valve bodies (31) are positioned below the flue gas outlet (21), the tail ends of the arc valve bodies (31) correspond to the transverse through holes (211), and the tail ends of the arc valve bodies (31) are provided with adjusting flue gas outlets (32); a heat exchange device (5) is arranged on the flue gas pipeline (4).

2. The adjustable waste heat recovery cooktop of claim 1, wherein: the flue gas recovery device (2) is of an annular structure as a whole, and the middle part of the flue gas recovery device (2) is provided with an inclined slope.

3. The adjustable waste heat recovery cooktop of claim 2, wherein: one side of the smoke outlet main pipe (24) is provided with an outlet, and the bottom of each smoke outlet (21) is connected with the cavity of the smoke outlet main pipe (24).

4. An adjustable waste heat recovery cooktop according to claim 3, characterized in that: the number of the transverse through holes (211) in the adjusting part (22) is two, the two transverse through holes (211) have a certain height difference, the tail ends of the two arc-shaped valve bodies (31) correspond to the two transverse through holes (211), and the two arc-shaped valve bodies (31) are arranged in the pressure valve (3) in a telescopic mode through springs.

5. The adjustable waste heat recovery cooktop of claim 4, wherein: the distance between two adjacent smoke outlets (32) is the same as the distance between two adjacent smoke outlets (21) at the upper end.

6. The adjustable waste heat recovery cooktop of claim 5, wherein: the temperature sensor and the pressure sensor are arranged in the adjusting part (22).

7. The adjustable waste heat recovery cooktop of claim 6, wherein: the number of the heat exchange devices (5) is multiple, and the heat exchange devices (5) are communicated through the water-thin pipe (6); the heat exchange device (5) is internally provided with a smoke spiral pipe (51), a heat exchange medium pipe (52) and a smoke outlet pipe (53).

8. The adjustable waste heat recovery cooktop of claim 7, wherein: the flue gas spiral pipe (51) and the heat exchange medium pipe support (52) are of spiral structures, the flue gas spiral pipe (51) supports the heat exchange medium pipe support (52), the flue gas outlet pipe (53) is arranged in the flue gas spiral pipe (51) and the heat exchange medium pipe support (52), and the top of the flue gas outlet pipe (53) is communicated with the top of the flue gas spiral pipe (51).

9. The adjustable waste heat recovery cooktop of claim 8, wherein: the bottom of flue gas recovery unit (2) is equipped with insulating layer (23), and the inside of insulating layer (23) is hollow structure.

10. The adjustable waste heat recovery cooktop of claim 9, wherein: the kitchen range is characterized in that a water tap (11) is arranged on the wall surface of the kitchen range shell (1), two kitchen range cavities (12) are formed in the lower end of the kitchen range shell, a fire hole (15) is formed in the bottom of each kitchen range cavity (12), and the flue gas recovery device (2) is arranged in the middle of each kitchen range cavity (12).

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