Heat exchange and steam generation device

Abstract

The utility model discloses a heat exchange and steam generation device which comprises a water tank and a heat exchange pipe, and the water tank is arranged on the periphery of the heat exchange pipe to define a heat exchange pipe installation space. The multiple heat exchange pipes are obliquely aligned to form a staggered arrangement structure, heat conduction gaps are formed between the adjacent heat exchange pipes, the heat exchange pipes communicate with the water tank, and the water tank is connected with a steam pipeline. A combustion chamber is arranged below the heat exchange pipe at the bottom, and a smoke channel is arranged above the heat exchange pipe at the top. A protective cover is arranged above the water tank and covers the flue gas channel to form a flue gas chamber; a smoke exhaust pipe is arranged on the protective cover and communicated with the smoke channel. In this way, during heating, fire can extend upwards along the gaps between the heat exchange pipes, so that all the heat exchange pipes can be heated, the fire heating area is remarkably increased, and the heating efficiency is improved. In addition, hot air generated by heating can directly perform secondary heating on the steam pipeline, so that the maximum temperature of steam can reach 150 DEG C.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange equipment, in particular to a device for realizing steam generation through heat exchange. Background Art

[0002] A steam generator is a device that uses heat energy to convert liquid water into gaseous water vapor. Hot steam can be widely used as a heat source in the fields of catering, heating, industrial heating, etc., such as rice noodle roll machines and steamers in the catering field. Traditional steam generators usually only put water into a box-type or cylindrical container, and then heat the container to boil the water to produce water vapor. The disadvantage of this method is that the container has a small area heated by fire, low heating efficiency, and high energy consumption. To this end, the prior patent CN202221745775.8 discloses a heat exchanger and a steam generator, which can slow down the flow rate of the heat source, extend the residence time of the heat source, make full use of the heat source, increase the heat contact area, and improve energy utilization efficiency by arranging a secondary pipe body in the main pipe. However, the solution provided by the patent has a small increase in the area heated by fire due to the longitudinal alignment of the secondary pipe body, which affects the heating efficiency. In addition, since the generated water vapor is directly discharged from the steam pipe through the cavity formed by the wind collecting hood, the steam temperature is not high enough, and it is usually difficult to exceed 110°C. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a heat exchange and steam generating device with more reasonable structural design, which can significantly increase the heating area, have higher heating efficiency and higher steam temperature.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a heat exchange and steam generating device, comprising a water tank and a heat exchange tube, characterized in that: the water tank is arranged around the heat exchange tube to form a shell of the entire device, and surrounds a heat exchange tube installation space; a plurality of heat exchange tubes are arranged in a staggered structure along an oblique alignment and installed in the heat exchange tube installation space, and a heat conduction gap is provided between adjacent heat exchange tubes, each heat exchange tube is connected to a water storage cavity of the water tank, and the water tank is connected to a steam pipe; a combustion chamber is provided below the heat exchange tube at the bottom, and a smoke channel is provided above the heat exchange tube at the top; a protective cover is provided above the water tank, and the smoke channel is covered by the protective cover to form a smoke chamber; a smoke exhaust pipe is provided on the protective cover, and the smoke exhaust pipe is connected to the smoke channel.

[0005] Furthermore, the steam pipe is connected from the upper part of the water tank and then passes through the smoke chamber in the protective cover and passes through the smoke chamber to form a steam outlet pipe.

[0006] Furthermore, the steam pipe is in a serpentine or spiral structure in the smoke chamber in the protective cover and is vertically opposite to the smoke channel.

[0007] Furthermore, the heat exchange tubes are square tubes, round tubes, elliptical tubes or polygonal tubes, and each heat exchange tube is installed across the combustion chamber.

[0008] Preferably, the heat exchange tubes are square tubes, each heat exchange tube is installed horizontally across the combustion chamber in a sideways tilted posture, and each heat exchange tube is evenly arranged.

[0009] Furthermore, mounting plates are arranged on both sides of the heat exchange tube installation space at positions opposite to the two ends of the heat exchange tube, and docking holes corresponding to each heat exchange tube are arranged in the mounting plates; each heat exchange tube is installed and fixed through the corresponding docking hole and connected with the water storage cavity of the water tank through the docking hole, and the mounting plate is connected and fixed to the water tank.

[0010] Furthermore, a water inlet pipe is arranged at the bottom of the side wall of the water tank, and the water inlet pipe is connected to the water storage cavity of the water tank.

[0011] Preferably, the water tank, heat exchange tube, protective cover and steam pipe are all made of stainless steel.

[0012] The utility model installs the heat exchange tubes in an oblique staggered manner in the installation space of the shell formed by the water tank. The heat exchange tubes are connected to the water tank. When the heat exchange tubes are heated by the combustion chamber, the fire extends upward along the gaps between the heat exchange tubes, thereby heating each heat exchange tube, significantly increasing the area heated by the fire and improving the heating efficiency. In addition, by arranging the steam pipe in the space inside the protective cover, the hot air generated by the heating will directly perform secondary heating on the steam pipe, which can significantly increase the temperature of the water vapor, up to 150°C. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the planar structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the exploded structure of the utility model;

[0016] Figure 4 It is a cross-sectional schematic diagram of the utility model in use;

[0017] Figure 5 for Figure 2 AA stereoscopic cross-sectional view;

[0018] Figure 6 for Figure 2 BB three-dimensional cross-sectional view.

[0019] In the figure, 1 is a water tank, 11 is a water storage chamber, 12 is a water inlet pipe, 13 is a smoke channel, 2 is a heat exchange tube, 3 is a protective cover, 31 is a smoke exhaust pipe, 4 is a combustion chamber, 5 is a steam pipe, 51 is a steam outlet pipe, 6 is a mounting plate, 61 is a docking hole, 7 is a heat conduction gap, and 8 is water. DETAILED DESCRIPTION

[0020] In this embodiment, refer to Figure 1-Figure 6 The heat exchange and steam generating device comprises a water tank 1 and a heat exchange tube 2. The water tank 1 is arranged around the heat exchange tube 2 to form a shell of the entire device and enclose a heat exchange tube installation space. A plurality of heat exchange tubes 2 are arranged in a staggered arrangement (similar to the arrangement of a Yang Hui triangle) along an oblique direction and installed in the heat exchange tube installation space. There is a heat conduction gap 7 between adjacent heat exchange tubes 2. When heating by burning fire, the fire will extend upward along the heat conduction gap 7, thereby achieving heating of each heat exchange tube 2. heat, increasing the fire-exposed area; each heat exchange tube 2 is connected to the water storage chamber 11 of the water tank 1, and water 8 can flow freely between the water storage chamber 11 and the heat exchange tube 2, and the water tank 1 is connected to the steam pipe 5; a combustion chamber 4 is arranged below the heat exchange tube 2 at the bottom, and a smoke channel 13 is arranged above the heat exchange tube 2 at the top; a protective cover 3 is arranged above the water tank 1, and the smoke channel 13 is covered by the protective cover 3 to form a smoke chamber; a smoke exhaust pipe 31 is arranged on the protective cover 3, and the smoke exhaust pipe 31 is connected to the smoke channel 13.

[0021] The steam pipe 5 is connected from the upper part of the water tank 1 and then penetrates into the smoke chamber in the protective cover 3 and then passes out from the smoke chamber to form a steam outlet pipe 51. The steam outlet pipe 51 is used to connect to terminal equipment, such as a steamer, a rice noodle roll machine, etc. When the steam pipe 5 is inserted into the space (i.e., the smoke chamber) of the protective cover 3, the high-temperature hot air generated by heating will directly perform secondary heating on the steam pipe 5 to increase the temperature of the water vapor.

[0022] The steam pipe 5 has a serpentine or spiral structure in the smoke chamber in the protective cover 3 and is opposite to the smoke channel 13 in the upper and lower directions. This can increase the area in contact with the hot air in the smoke chamber, thereby more significantly increasing the temperature of the water vapor, so that the temperature of the water vapor can reach 150°C.

[0023] The heat exchange tubes 2 are square tubes (circular tubes, elliptical tubes or polygonal tubes are also acceptable), and each heat exchange tube 2 is installed horizontally across the combustion chamber 4 in a sideways tilted posture, that is, the heat exchange tubes 2 are not laid flat, but are placed with any side at the lowest posture, so that both sides of the heat exchange tubes 2 can be heated by fire during heating, doubling the heating area, and the heat exchange tubes 2 are evenly arranged.

[0024] Mounting plates 6 are arranged on both sides of the installation space of the heat exchange tube 2 and at positions opposite to the two ends of the heat exchange tube 2. The mounting plates 6 are provided with docking holes 61 corresponding to each heat exchange tube 2; each heat exchange tube 2 is installed and fixed through the corresponding docking hole 61 and is connected with the water storage cavity 11 of the water tank 1 through the docking hole 61, and the mounting plate 6 is connected and fixed to the water tank 1.

[0025] A water inlet pipe 12 is provided at the bottom of the side wall of the water tank 1 , and the water inlet pipe 12 is connected to the water storage chamber 11 of the water tank 1 .

[0026] The water tank 1, the heat exchange tube 2, the protective cover 3 and the steam pipe 5 are all made of stainless steel.

[0027] The smoke generated during heating rises in the heat exchange tube installation space, enters the smoke chamber through the smoke channel, and is then discharged to the outside through the smoke exhaust pipe 31. The water vapor generated by the boiling of water 8 enters the steam pipe 5 through the upper space of the water tank 1, and is then output through the steam outlet pipe 51.

[0028] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. A heat exchange and steam generating device, comprising a water tank and a heat exchange tube, characterized in that: A water tank is arranged around the heat exchange tube to enclose a heat exchange tube installation space; a plurality of heat exchange tubes are aligned obliquely to form a staggered structure and are installed in the heat exchange tube installation space, with a heat conduction gap between adjacent heat exchange tubes, each heat exchange tube is connected to a water storage cavity of the water tank, and the water tank is connected to a steam pipe; a combustion chamber is arranged below the bottom heat exchange tube, and a smoke channel is arranged above the top heat exchange tube; a protective cover is arranged above the water tank, and the smoke channel is covered by the protective cover to form a smoke chamber; a smoke exhaust pipe is arranged on the protective cover, and the smoke exhaust pipe is connected to the smoke channel.

2. The heat exchange and steam generating device according to claim 1, characterized in that: The steam pipe is connected from the upper part of the water tank, passes through the smoke chamber in the protective cover, and passes out from the smoke chamber to form a steam outlet pipe.

3. The heat exchange and steam generating device according to claim 2, characterized in that: The steam pipe is in a serpentine or spiral structure in the smoke chamber in the protective cover and is vertically opposite to the smoke channel.

4. The heat exchange and steam generating device according to claim 1, characterized in that: The heat exchange tubes are square tubes, round tubes, elliptical tubes or polygonal tubes, and each heat exchange tube is installed across the combustion chamber.

5. The heat exchange and steam generating device according to claim 1 or 4, characterized in that: The heat exchange tubes are square tubes, each heat exchange tube is horizontally installed across the combustion chamber in a sideways tilted posture, and each heat exchange tube is evenly arranged.

6. The heat exchange and steam generating device according to claim 1, characterized in that: Mounting plates are arranged on both sides of the heat exchange tube installation space at positions opposite to the two ends of the heat exchange tube, and docking holes corresponding to each heat exchange tube are arranged in the mounting plates; each heat exchange tube is installed and fixed through the corresponding docking hole and is connected with the water storage cavity of the water tank through the docking hole, and the mounting plate is connected and fixed to the water tank.

7. The heat exchange and steam generating device according to claim 1, characterized in that: A water inlet pipe is arranged at the bottom of the side wall of the water tank, and the water inlet pipe is connected with the water storage cavity of the water tank.

8. The heat exchange and steam generating device according to claim 1, characterized in that: The water tank, heat exchange tube, protective cover and steam pipeline are all made of stainless steel.

Images