Gas steaming apparatus with waste heat recovery

Abstract

The utility model discloses a gas cooking equipment with waste heat recovery, including gas stove, the gas stove's gas outlet end is connected with the recovery tank and the tank cover, is equipped with the heat pipe and the heat sleeve on the recovery tank, is equipped with the heat plate between heat pipe and heat sleeve, is equipped with the heat water pipe of spiral winding on the heat plate, the bottom of recovery tank is equipped with the drain pipe, through the high temperature steam of gas stove's gas outlet end into to the heat pipe, through the design of heat pipe and heat sleeve, has prolonged the circulation path and the heat conduction capacity of gas, through setting up the heat water pipe on the heat plate, and circulating and passing in the cool water in the heat water pipe, through the cooling of hot gas while, to the cooling water and carry out the heating, realize the heat recovery of steam.

Description

Technical Field

[0001] This utility model relates to the field of heat recovery technology, and more specifically, it relates to a gas-fired cooking device with waste heat recovery. Background Technology

[0002] Gas-fired cooking equipment is widely used in catering, food processing, central kitchens and other fields. Its core function is to generate high-temperature steam or hot water through gas combustion for cooking, sterilization, steaming and other processes. However, traditional gas-fired cooking equipment has problems such as low energy utilization, large heat loss and high operating costs. During the combustion process, a large amount of high-temperature flue gas (usually 200~300℃) is directly emitted, causing energy waste and increasing environmental thermal pollution.

[0003] In some existing waste heat recovery equipment, the steam flows at a relatively high speed in the recovery system, resulting in a short heat recovery time and insufficient heat exchange with the cooling medium. This leads to inadequate heat recovery, and scale easily accumulates on the heat exchange tubes, making it difficult to maintain the waste heat recovery equipment. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a gas-fired cooking equipment with waste heat recovery to solve the technical problem of insufficient heat exchange between steam and cooling medium mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a gas-fired cooking device with waste heat recovery, comprising a gas furnace, a recovery box and a box cover connected to the gas outlet end of the gas furnace, a heat-conducting pipe and a heat-conducting sleeve on the recovery box, a heat-conducting plate between the heat-conducting pipe and the heat-conducting plate, a hot water pipe spirally wound on the heat-conducting plate, a drain pipe at the bottom of the recovery box, an exhaust pipe at the top of the box cover, a partition inside the exhaust pipe, a control rod slidably mounted on the partition, a control plate at one end of the control rod and a control pipe at the other end, exhaust holes corresponding to the control pipe and the exhaust pipe, a control airbag between the control plate and the exhaust pipe, and a control air pipe connected to the outside of the control airbag.

[0008] The present invention is further provided with a control spring between the control board and the partition, which facilitates the control board to move and reset after the control airbag shrinks.

[0009] The present invention is further configured such that a sliding track is provided inside the exhaust pipe, and the control pipe is slidably disposed within the sliding track, thereby restricting the movement direction of the control pipe and aligning the exhaust holes.

[0010] The present invention is further provided that the recycling bin is provided with a connecting block, the connecting block is provided with a connecting groove, and the bin cover is provided with a connecting post that cooperates with the connecting groove, so as to facilitate the alignment and installation of the recycling bin and the bin cover.

[0011] The present invention is further configured such that the connecting block is provided with a movable groove, the movable groove is provided with a movable plate, and the movable plate is provided with a connecting sleeve. The movable plate drives the connecting sleeve to move, and the connecting sleeve fixes the relative position of the connecting column and the connecting block, thereby fixing the relative position of the box and the recycling box.

[0012] The present invention is further configured such that a movable rod is slidably provided on the connecting block, one end of the movable rod is fixedly connected to the movable plate, and the other end is provided with a movable handle. A movable spring is provided between the movable plate and the movable plate, and the position of the movable plate and the connecting sleeve is moved by the movable rod.

[0013] The present invention is further provided that the box cover is provided with an abutment rod, one end of which abuts against the heat-conducting sleeve, so as to facilitate fixing the position of the heat-conducting pipe and the heat-conducting sleeve inside the recycling box.

[0014] The present invention is further provided with a stabilizing plate at the bottom of the heat pipe, so as to facilitate the stable support of the heat pipe in the recycling box.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a gas-fired cooking device with waste heat recovery, which has the following beneficial effects:

[0017] 1. By introducing the high-temperature steam generated at the gas outlet of the gas furnace into the heat pipe, the design of the heat pipe and heat-conducting sleeve extends the gas flow path and heat conduction capacity. By setting a hot water pipe on the heat-conducting plate and circulating cold water in the hot water pipe, the hot water cools the hot air while simultaneously heating the cold water, thus realizing the heat recovery of the steam.

[0018] 2. By controlling the air tube to introduce gas into the control airbag, the size of the airbag is adjusted, which in turn adjusts the position of the control plate, control rod, and control tube. By adjusting the overlapping area of ​​the control tube and the exhaust hole on the exhaust pipe, the exhaust speed is adjusted, which makes it easier to flexibly adjust the time of steam in the recovery box and improves the steam heat recovery effect.

[0019] 3. The connection is made by connecting the connecting post on the lid and the connecting slot on the connecting block of the recycling box. The connecting sleeve is then fitted onto the connecting post and the connecting block by the moving rod and the moving plate, which facilitates the connection between the recycling boxes. The connection method is simple to edit. The position of the heat-conducting sleeve and the heat-conducting pipe is fixed by the cooperation of the stabilizing plate and the abutment rod. Opening the lid makes it easy to remove the heat-conducting sleeve and the heat-conducting pipe, which facilitates the cleaning of the internal devices of the recycling box and avoids scale buildup that affects the heat conduction effect and thus the preheating and recycling effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a gas-fired cooking device with waste heat recovery according to this utility model;

[0021] Figure 2 This is a cross-sectional view of the recycling bin and its lid in this utility model.

[0022] Figure 3 This is a cross-sectional view of the control pipe and exhaust pipe in this utility model;

[0023] Figure 4 This is a schematic diagram of the mating structure of the connecting block, connecting column, and connecting sleeve in this utility model;

[0024] Figure 5 This is a cross-sectional view of the connecting block in this utility model.

[0025] In the diagram: 1. Gas stove; 2. Recycling bin; 3. Bin lid; 4. Heat-conducting pipe; 5. Heat-conducting sleeve; 6. Heat-conducting plate; 7. Hot water pipe; 8. Drain pipe; 9. Exhaust pipe; 10. Partition plate; 11. Control rod; 12. Control panel; 13. Control pipe; 14. Exhaust port; 15. Control airbag; 16. Control air pipe; 17. Control spring; 18. Sliding rail; 19. Connecting block; 20. Connecting groove; 21. Connecting column; 22. Moving groove; 23. Moving plate; 24. Connecting sleeve; 25. Moving rod; 26. Moving handle; 27. Moving spring; 28. Abutment rod; 29. ​​Stabilizing plate. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figures 1-5 A gas-fired cooking device with waste heat recovery includes a gas furnace 1. The gas furnace 1 has a gas outlet connected to a recovery box 2 and a box cover 3. The recovery box 2 is equipped with a heat-conducting pipe 4 and a heat-conducting sleeve 5. A heat-conducting plate 6 is provided between the heat-conducting pipe 4 and the heat-conducting plate 6. A hot water pipe 7 is spirally wound on the heat-conducting plate 6. A drain pipe 8 is provided at the bottom of the recovery box 2. An exhaust pipe 9 is provided at the top of the box cover 3. A partition 10 is provided inside the exhaust pipe 9. A control rod 11 is slidably provided on the partition 10. A control plate 12 is provided at one end of the control rod 11, and a control pipe 13 is provided at the other end. Exhaust holes 14 are provided on the control pipe 13 and the exhaust pipe 9 respectively. A control air bag 15 is provided between the control plate 12 and the exhaust pipe 9. A control air pipe 16 is connected to the outside of the control air bag 15. A control spring 17 is provided between the control plate 12 and the partition 10. A sliding track 18 is provided inside the exhaust pipe 9. The control pipe 13 is slidably disposed in the sliding track 18.

[0030] In this embodiment, during use, the high-temperature steam generated at the outlet of the gas furnace 1 is introduced into the heat pipe 4. The design of the heat pipe 4 and the heat-conducting sleeve 5 extends the gas flow path and time. Cool water is circulated through the inlet and outlet of the hot water pipe 7. The cool water cools the hot steam while simultaneously absorbing heat and heating up, thus recovering and utilizing the heat. Water in the steam condenses into droplets upon cooling and collects in the recovery tank 2, which is periodically discharged through the drain pipe 8. A pressure gauge is installed on the recovery tank 2 to monitor the gas pressure inside. As needed, the pressure can be adjusted via an external connection. The air pump controls the air supply through the air pipe 16, adjusts the size of the control airbag 15, and thus adjusts the position of the control plate 12 and the control rod 11, and adjusts the height of the control pipe 13. By adjusting the degree of overlap between the control pipe 13 and the exhaust hole 14 on the exhaust pipe 9, the exhaust area of ​​the exhaust hole 14 is adjusted, thereby adjusting the exhaust speed, which improves the practicality of the recycling box 2. By setting the control spring 17, the control plate 12 can be moved upward and reset when the control airbag 15 shrinks. When the exhaust hole 14 of the control pipe 13 and the exhaust pipe 9 are completely misaligned, the exhaust hole 14 is blocked, which helps to prevent dust from entering the recycling box 2 when it is not in use.

[0031] Please see Figures 4-5As one embodiment of connecting the recycling bin 2 and the bin cover 3: the recycling bin 2 is provided with a connecting block 19, the connecting block 19 is provided with a connecting groove 20, the bin cover 3 is provided with a connecting post 21 that cooperates with the connecting groove 20, the connecting block 19 is provided with a moving groove 22, the moving groove 22 is provided with a moving plate 23, the moving plate 23 is provided with a connecting sleeve 24, the connecting block 19 is provided with a moving rod 25, one end of the moving rod 25 is fixedly connected to the moving plate 23, and the other end is provided with a moving handle 26, a moving spring 27 is provided between the moving plates 23, the bin cover 3 is provided with an abutting rod 28, one end of the abutting rod 28 abuts against the heat-conducting sleeve 5, and the bottom of the heat-conducting pipe 4 is provided with a stabilizing plate 29.

[0032] More specifically, during assembly and maintenance, the heat pipe 4 is supported at the bottom of the recycling box 2 by the stabilizing plate 29, and the box cover 3 is fastened to the recycling box 2. The heat pipe 4 is supported at the bottom of the heat pipe sleeve 5 by the abutting rod 28, thereby stabilizing the position of the heat pipe sleeve 5, the heat pipe 4 and the heat block. When the box cover 3 is fastened, the moving rod 25 is pulled outward. The moving rod 25 drives the moving plate 23 to move in the moving groove 22 and compress the moving spring 27. The moving plate 23 drives the connecting sleeve 24 to move outward. Then the connecting post 21 on the box cover 3 is connected to the connecting groove 20 of the connecting block 19 on the recycling box 2. The moving rod 25 is released, and the moving plate 23 drives the connecting sleeve 24 to move onto the connecting block 19 and the connecting post 21 under the elastic force of the moving spring 27, thereby fixing the position of the box cover 3. When disassembling the box cover 3, the moving rod 25 is pulled outward.

[0033] In summary, during the use or operation of the overall equipment: When in use, the high-temperature steam generated at the outlet of the gas furnace 1 is introduced into the heat pipe 4. The design of the heat pipe 4 and the heat-conducting sleeve 5 extends the gas flow path and time. Cool water is circulated through the inlet and outlet of the hot water pipe 7. The cool water cools the hot steam while simultaneously absorbing heat and heating itself, thus recovering and utilizing the heat. Moisture in the steam condenses into droplets upon cooling and collects in the recovery tank 2, which is periodically discharged through the drain pipe 8 (the drain valve is not visible). A pressure gauge is installed on the recovery tank 2 to monitor the gas pressure inside. The system is powerful. As needed, an external air pump is used to ventilate the control air pipe 16, adjust the size of the control airbag 15, and thus adjust the position of the control plate 12 and the control rod 11. The height of the control pipe 13 is also adjusted. By adjusting the degree of overlap between the control pipe 13 and the exhaust hole 14 on the exhaust pipe 9, the exhaust area of ​​the exhaust hole 14 is adjusted, thereby adjusting the exhaust speed. This improves the practicality of the recycling box 2. By setting a control spring 17, the control plate 12 can be moved upward and reset when the control airbag 15 shrinks. When the exhaust hole 14 of the control pipe 13 and the exhaust pipe 9 is completely misaligned, the exhaust hole 14 is blocked, thus preventing dust from entering the recycling box 2 when it is not in use.

[0034] During assembly and maintenance, the heat pipe 4 is supported at the bottom of the recycling box 2 by the stabilizing plate 29. The box cover 3 is fastened to the recycling box 2 and abuts against the bottom of the heat-conducting sleeve 5 by the abutting rod 28, thereby stabilizing the position of the heat-conducting sleeve 5, the heat pipe 4, and the heat-conducting block. When the box cover 3 is fastened, the moving rod 25 is pulled outward. The moving rod 25 drives the moving plate 23 to move in the moving groove 22 and compress the moving spring 27. The moving plate 23 drives the connecting sleeve 24 to move outward. Then, the connecting post 21 on the box cover 3 is connected to the connecting groove 20 of the connecting block 19 on the recycling box 2. The moving rod 25 is released. Under the elastic force of the moving spring 27, the moving plate 23 drives the connecting sleeve 24 to move onto the connecting block 19 and the connecting post 21, thereby fixing the position of the box cover 3. When disassembling the box cover 3, the moving rod 25 is pulled outward.

[0035] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.

[0036] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A gas-fired cooking apparatus with waste heat recovery, comprising a gas-fired furnace (1), characterized in that: The gas furnace (1) is connected to a recovery box (2) and a box cover (3) at the gas outlet end. The recovery box (2) is provided with a heat-conducting pipe (4) and a heat-conducting sleeve (5). A heat-conducting plate (6) is provided between the heat-conducting pipe (4) and the heat-conducting plate (6). A hot water pipe (7) is spirally wound on the heat-conducting plate (6). A drain pipe (8) is provided at the bottom of the recovery box (2). An exhaust pipe (9) is provided at the top of the box cover (3). A partition (10) is provided inside the exhaust pipe (9). A control rod (11) is slidably provided on the partition (10). A control plate (12) is provided at one end of the control rod (11), and a control pipe (13) is provided at the other end. An exhaust hole (14) is provided on the control pipe (13) and the exhaust pipe (9). A control air bag (15) is provided between the control plate (12) and the exhaust pipe (9). A control air pipe (16) is connected to the outside of the control air bag (15).

2. The gas-fired cooking equipment with waste heat recovery according to claim 1, characterized in that: A control spring (17) is provided between the control panel (12) and the partition (10).

3. A gas-fired cooking apparatus with waste heat recovery according to claim 1, characterized in that: The exhaust pipe (9) is provided with a sliding track (18), and the control pipe (13) is slidably disposed in the sliding track (18).

4. A gas-fired cooking apparatus with waste heat recovery according to claim 1, characterized in that: The recycling bin (2) is provided with a connecting block (19), the connecting block (19) is provided with a connecting groove (20), and the bin cover (3) is provided with a connecting post (21) that cooperates with the connecting groove (20).

5. A gas-fired cooking apparatus with waste heat recovery according to claim 4, characterized in that: The connecting block (19) is provided with a moving groove (22), the moving groove (22) is provided with a moving plate (23), and the moving plate (23) is provided with a connecting sleeve (24).

6. A gas-fired cooking apparatus with waste heat recovery according to claim 5, characterized in that: A movable rod (25) is slidably provided on the connecting block (19). One end of the movable rod (25) is fixedly connected to the movable plate (23), and the other end is provided with a movable handle (26). A movable spring (27) is provided between the movable plate (23) and the movable plate (23).

7. A gas-fired cooking apparatus with waste heat recovery according to claim 1, characterized in that: The box cover (3) is provided with an abutment rod (28), one end of which abuts against the heat-conducting sleeve (5).

8. A gas-fired cooking apparatus with waste heat recovery according to claim 1, characterized in that: The bottom of the heat pipe (4) is provided with a stabilizing plate (29).

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