A high-efficiency heat exchanger

Abstract

The present application relates to a kind of high-efficiency heat exchanger of heat exchange, it includes shell and heat exchange component, the shell has serpentine passage, the both ends of the serpentine passage are formed respectively in the shell air inlet and air outlet, the top of the shell is equipped with the oil inlet that communicates the serpentine passage;The heat exchange component has the heat exchange end inbuilt in the serpentine passage;Oxygen (air) is entered into shell by air inlet, and flows along serpentine passage, pentane is entered into shell from oil inlet, pentane in the process of falling, since the movement direction of pentane and oxygen is perpendicular to each other, can guarantee the sufficient contact mixing of pentane and oxygen;Meanwhile, pentane is mixed with the heat exchange end of heat exchange component in the process of oxygen and fully contacts, provides the required heat energy for the gasification of pentane, and liquid pentane gasification efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger technology, and more particularly to a heat exchanger with high efficiency. Background Technology

[0002] Pentane is a liquid fuel that needs to be mixed with oxygen (air) and vaporized to achieve stable and efficient combustion. Currently, the mixing process of pentane and air can be achieved through a heat exchanger, which provides the required temperature for pentane vaporization.

[0003] Currently, most liquid pentane is fed into the heat exchanger from the bottom, and the gas generated by heating naturally flows upward, avoiding gas blockage and achieving stable vaporization.

[0004] However, pentane has a small contact area with air, resulting in low mixing efficiency between pentane and air, and pentane is difficult to fully contact with heat exchange pipes, leading to low vaporization efficiency of liquid pentane. Summary of the Invention

[0005] In view of this, it is necessary to provide a heat exchanger with high efficiency to solve the problems of small contact area between pentane and air, low mixing efficiency between pentane and air, and difficulty in sufficient contact between pentane and heat exchange pipes, resulting in low vaporization efficiency of liquid pentane.

[0006] This invention provides a high-efficiency heat exchanger, including a shell and a heat exchange assembly. The shell has a serpentine channel, with an air inlet and an air outlet formed at both ends of the serpentine channel. An oil inlet communicating with the serpentine channel is provided at the top of the shell. The heat exchange assembly has a heat exchange end built into the serpentine channel.

[0007] Furthermore, the outer casing includes a housing and a plurality of baffles, the plurality of baffles being arranged sequentially along the length of the housing and dividing the interior of the housing into a serpentine channel extending in the horizontal direction.

[0008] Furthermore, a unit channel is formed between any two adjacent partitions, and the number of the unit channels is the same as the number of the oil inlets and corresponds one-to-one. The oil inlets are located near the beginning of the liquid flow direction in the corresponding unit channel.

[0009] Furthermore, the heat exchange assembly includes a heat exchange coil, a circulation pump, and a heater. The heat exchange coil is built into the housing, and the liquid inlet of the heat exchange coil is connected to the liquid outlet of the heat exchange coil via the circulation pump and the heater in sequence.

[0010] Furthermore, the heat exchange assembly also includes multiple heat exchange fins, which are arranged sequentially along the length of the serpentine channel and fixedly mounted on the heat exchange coil.

[0011] Furthermore, it also includes a heating jacket, which is arranged at the bottom of the outer shell and has a heat exchange cavity communicating with the heat exchange coil.

[0012] Furthermore, it also includes a temperature detection element, the detection end of which is disposed at the liquid outlet of the heat exchange coil, for detecting the outlet water temperature of the heat exchange coil.

[0013] Furthermore, it also includes multiple control valves installed on the multiple oil inlets for controlling the opening and closing of the oil inlets.

[0014] Furthermore, it also includes a control component, which is electrically connected to the temperature sensor and the plurality of control valves. When the temperature value detected by the temperature sensor is lower than a threshold, the control component controls the plurality of control valves to open alternately.

[0015] Furthermore, it also includes a bracket installed at the bottom of the housing.

[0016] Compared with existing technologies, oxygen (air) enters the shell through the air inlet and flows along the serpentine channel, while pentane enters the shell through the oil inlet. During the descent of pentane, since the direction of movement of pentane is perpendicular to that of oxygen, it can ensure sufficient contact and mixing between pentane and oxygen. At the same time, during the mixing process with oxygen, pentane makes full contact with the heat exchange end of the heat exchange component, providing the heat energy required for the vaporization of pentane. Liquid pentane has high vaporization efficiency. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of the high-efficiency heat exchanger provided in an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the overall internal structure of the middle section; Figure 3 for Figure 1 A top-down view of the entire structure. Detailed Implementation

[0018] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0019] like Figure 1 , Figure 2 and Figure 3As shown in the figure, an embodiment of the present invention provides a high-efficiency heat exchanger, including a shell 100 and a heat exchange assembly 200. The shell 100 has a serpentine channel 10a, and the two ends of the serpentine channel 10a form an air inlet 10b and an air outlet 10c on the shell 100, respectively. The top of the shell 100 has an oil inlet 10d that communicates with the serpentine channel 10a. The heat exchange assembly 200 has a heat exchange end built into the serpentine channel 10a.

[0020] During implementation, oxygen (air) enters the outer shell 100 through the air inlet 10b and flows along the serpentine channel 10a. Pentane enters the outer shell 100 through the oil inlet 10d. During the descent of pentane, since the direction of movement of pentane is perpendicular to that of oxygen, it can ensure sufficient contact and mixing between pentane and oxygen. At the same time, during the mixing process with oxygen, pentane makes full contact with the heat exchange end of the heat exchange component 200, providing the required heat energy for the vaporization of pentane. Liquid pentane has high vaporization efficiency.

[0021] In this embodiment, the outer casing 100 provides a closed space for the vaporization of pentane and its mixing with air. Specifically, the outer casing 100 has a serpentine channel 10a, with an air inlet 10b and an air outlet 10c formed at both ends of the serpentine channel 10a, respectively. An oil inlet 10d communicating with the serpentine channel 10a is provided at the top of the outer casing 100. The serpentine channel 10a increases the length of the flow path of pentane within the outer casing 100, ensuring sufficient vaporization of liquid pentane and effective mixing of pentane with air.

[0022] In one embodiment, the housing 100 includes a housing 110 and a plurality of baffles 120, which are arranged sequentially along the length of the housing 110 and divide the interior of the housing 110 into a serpentine channel 10a extending in the horizontal direction.

[0023] The shell 110 is a horizontal cylindrical structure. The shape of the baffle 120 is adapted to and connected to the shape of the inner wall of the shell 110. The baffle 120 has a connecting edge and a non-connecting edge. The connecting edge is fixedly connected to the inner wall of the shell 110, which can be achieved by welding, threaded connection or other means. The non-connecting edge is spaced apart from the inner wall of the shell 110 to connect two adjacent cavities of the baffle 120.

[0024] Understandably, the shell 110 adopts a horizontal cylindrical structure to match the movement direction of pentane with the flow direction of air. Specifically, the shell 110 is horizontally positioned, and its internal serpentine channel 10a extends horizontally, thereby limiting the horizontal flow of air. Liquid pentane enters through the oil inlet 10d at the top of the shell 110. Under its own weight, the liquid pentane falls downwards, fully mixing with the flowing air during its descent, and is efficiently vaporized under the heating of the heat exchange component 200.

[0025] During its descent, the liquid pentane is affected by the airflow and does not fall vertically downwards, but rather at an angle along the direction of the airflow. It should be noted that the descent of the liquid pentane includes a mixture of partially vaporized liquid pentane and pentane.

[0026] To address the aforementioned descent path of liquid pentane, the arrangement of the multiple oil inlets 10d is adjusted to improve the vaporization and heat exchange efficiency of the liquid pentane. In one embodiment, a unit channel is formed between any two adjacent baffles, and the number of unit channels corresponds one-to-one with the number of oil inlets 10d. The oil inlets 10d are positioned near the beginning of the liquid flow direction within the corresponding unit channel. This effectively prevents incompletely vaporized liquid pentane from impacting the inner wall of the outer shell 100.

[0027] The heat exchange assembly 200 in this embodiment provides heat energy for the vaporization of pentane. The heat exchange assembly 200 has a heat exchange end built into the serpentine channel 10a.

[0028] In one embodiment, the heat exchange assembly 200 includes a heat exchange coil 210, a circulation pump, and a heater. The heat exchange coil 210 is built into the housing 100, and the liquid inlet 230 of the heat exchange coil 210 is connected to the liquid outlet 240 of the heat exchange coil 210 in sequence via the circulation pump and the heater.

[0029] The heat exchange coil 210 in this embodiment is a structure that those skilled in the art can conceive of. It is arranged at the center of the outer casing 100. The heat exchange coil 210 can be fixed to the inner wall of the outer casing 100 by connecting brackets on both sides. The heat exchange coil 210 extends along the length of the outer casing 100 and bends in the horizontal and / or vertical directions to fill the internal cavity of the outer casing 100. The liquid inlet 230 and liquid outlet 240 of the heat exchange coil 210 extend to the outside of the outer casing 100. To facilitate the introduction and export of the heat exchange medium, the liquid inlet 230 and liquid outlet 240 can be provided on the same outer wall of the outer casing 100. Of course, they can also be provided on different outer walls of the outer casing 100, which is not limited.

[0030] In this embodiment, the circulating pump provides the power source for the flow of the heat exchange medium in the heat exchange coil 210, and the heater is used to heat the heat exchange medium flowing through it, and then deliver it to the heat exchange coil 210 under the action of the circulating pump.

[0031] To further improve the heat exchange efficiency for pentane, air, and a mixture thereof, in one embodiment, the heat exchange assembly 200 further includes a plurality of heat exchange fins 220, which are arranged sequentially along the length of the serpentine channel 10a and fixedly mounted on the heat exchange coil 210.

[0032] It is understandable that a small amount of unvaporized liquid pentane will inevitably accumulate on the inner bottom wall of the outer shell 100, affecting the flow performance of the outer shell 100 and the vaporization efficiency of the accumulated liquid pentane. To address this, this embodiment also includes a heating jacket 300, which is arranged at the bottom of the outer shell 100 and has a heat exchange chamber connected to the heat exchange coil 210.

[0033] It should be noted that the temperature of the mixed gas discharged from the outlet 10c should be controlled at 27 degrees Celsius, the vaporization temperature of pentane is 38 degrees Celsius, and the inlet and outlet water temperatures are 90 degrees Celsius. Therefore, it is necessary to precisely control the temperature of the heat exchange medium in the heat exchange coil 210 to ensure that pentane absorbs heat efficiently.

[0034] Therefore, in one embodiment, a temperature detection element is also included. The detection end of the temperature detection element is disposed at the liquid outlet 240 of the heat exchange coil 210, and is used to detect the outlet water temperature of the heat exchange coil 210. The temperature detection element can be implemented using temperature sensing devices such as temperature sensors, and there is no limitation thereto.

[0035] When the liquid temperature at the outlet 240 of the heat exchange coil 210 is equal to the preset value (90 degrees Celsius), multiple oil inlets 10d can be opened simultaneously. However, when the liquid temperature at the outlet 240 of the heat exchange coil 210 is less than the preset value (90 degrees Celsius), if multiple oil inlets 10d are opened simultaneously, the liquid inside the outer casing 100 cannot be effectively vaporized. This is because the heat energy delivered by the heat exchange component 200 to the outer casing 100 is insufficient, and targeted adjustments are required.

[0036] To address the aforementioned issues, several adjustment methods exist. The first method involves controlling the heat pump power to adjust the calorific value of the heat exchange medium within the heat exchange coil 210. However, pentane is flammable, and an increase in temperature within the outer shell 100 poses a safety risk. Therefore, this embodiment employs a second adjustment method: specifically, controlling the number of times the oil inlet 10d is opened to reduce the heat energy required per unit time for liquid pentane in the outer shell 100.

[0037] In one embodiment, a plurality of control valves are also installed on a plurality of oil inlets 10d for controlling the opening and closing of the oil inlets 10d.

[0038] To facilitate the control of the opening and closing of multiple oil inlets 10d, this embodiment also includes a control component. The control component is electrically connected to a temperature sensor and multiple control valves. When the temperature value detected by the temperature sensor is lower than the threshold, the control component controls the multiple control valves to open alternately.

[0039] Understandably, the control component can be implemented using a microcontroller or similar architecture, based on a temperature detection structure, to control the actions of multiple control valves.

[0040] For example, there are six oil inlets 10d. These six inlets are marked along the gas flow direction within the serpentine channel 10a as the first, second, third, fourth, fifth, and sixth oil inlets. When the temperature detected by the temperature sensor equals a threshold, the first, second, third, fourth, fifth, and sixth oil inlets open simultaneously. At the same time, the air flow rate delivered to the housing 100 is A. When the temperature sensor... If the detected temperature value is lower than the threshold, the control component controls the opening of the first, third, and fifth oil inlets and the closing of the second, fourth, and sixth oil inlets. After a predetermined time, the control component controls the closing of the first, third, and fifth oil inlets and the opening of the second, fourth, and sixth oil inlets. The above steps are repeated to achieve the alternating opening and closing of multiple oil inlets 10d. At this time, the air flow rate delivered to the housing 100 is A / 2.

[0041] Of course, in his preferred embodiment, the multiple oil inlets 10d can also be opened and closed alternately in other ways, and there is no limitation on this.

[0042] This embodiment also includes a bracket 400 installed at the bottom of the housing 100 for supporting the entire heat exchanger.

[0043] Compared with existing technologies: Oxygen (air) enters the outer shell 100 through the air inlet 10b and flows along the serpentine channel 10a. Pentane enters the outer shell 100 through the oil inlet 10d. During the descent of pentane, since the movement direction of pentane is perpendicular to that of oxygen, it can ensure sufficient contact and mixing between pentane and oxygen. At the same time, during the mixing process with oxygen, pentane makes full contact with the heat exchange end of the heat exchange component 200, providing the required heat energy for the vaporization of pentane. The vaporization efficiency of liquid pentane is high.

[0044] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A high-efficiency heat exchanger, characterized in that, include: The outer casing has a serpentine channel, with an air inlet and an air outlet formed at both ends of the serpentine channel on the outer casing, and an oil inlet connected to the serpentine channel is provided at the top of the outer casing. The heat exchange assembly has a heat exchange end built into the serpentine channel.

2. The high-efficiency heat exchanger according to claim 1, characterized in that, The outer casing includes a housing and a plurality of baffles, which are arranged sequentially along the length of the housing and divide the interior of the housing into a serpentine channel extending in the horizontal direction.

3. The high-efficiency heat exchanger according to claim 2, characterized in that, A unit channel is formed between any two adjacent partitions. The number of unit channels is the same as the number of oil inlets and they correspond one-to-one. The oil inlets are located near the beginning of the liquid flow direction in the corresponding unit channel.

4. The high-efficiency heat exchanger according to claim 1, characterized in that, The heat exchange assembly includes a heat exchange coil, a circulation pump, and a heater. The heat exchange coil is built into the housing, and the liquid inlet of the heat exchange coil is connected to the liquid outlet of the heat exchange coil via the circulation pump and the heater in sequence.

5. The high-efficiency heat exchanger according to claim 4, characterized in that, The heat exchange assembly also includes multiple heat exchange fins, which are arranged sequentially along the length of the serpentine channel and fixedly mounted on the heat exchange coil.

6. The high-efficiency heat exchanger according to claim 4, characterized in that, It also includes a heating jacket, which is arranged at the bottom of the outer shell and has a heat exchange cavity that communicates with the heat exchange coil.

7. The high-efficiency heat exchanger according to claim 4, characterized in that, It also includes a temperature detection device, the detection end of which is located at the liquid outlet of the heat exchange coil and is used to detect the water outlet temperature of the heat exchange coil.

8. The high-efficiency heat exchanger according to claim 7, characterized in that, It also includes multiple control valves installed on multiple oil inlets for controlling the opening and closing of the oil inlets.

9. The high-efficiency heat exchanger according to claim 8, characterized in that, It also includes a control component, which is electrically connected to the temperature sensor and the plurality of control valves. When the temperature value detected by the temperature sensor is lower than a threshold, the control component controls the plurality of control valves to open alternately.

10. The high-efficiency heat exchanger according to claim 1, characterized in that, It also includes a bracket installed at the bottom of the housing.

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