A heat exchanger

Abstract

This invention discloses a heat exchanger, comprising a shell, a cold medium inlet, a cold medium outlet, a partition, a sleeve, a drive mechanism, a heat exchange tube I, a hot medium inlet, and a hot medium outlet. The upper end of the shell has a cold medium inlet, and the outlet end of the cold medium inlet has a partition located within the shell. The lower end of the partition has a partition. The sleeve is slidably and sealingly fitted onto the partition, with a heat exchange space between the sleeve and the partition. The shell is equipped with a drive mechanism for driving the sleeve to slide up and down. The lower end of the partition has several notches for communication between the internal space of the partition and the heat exchange space. The heat exchange space contains the heat exchange tube I. Compared with existing technologies, this invention allows for adjustment of the heat exchange time between the hot and cold medium as needed, meeting higher user requirements and improving adaptability.

Description

Technical Field

[0001] This invention relates to the field of heat exchange technology, and in particular to the field of heat exchangers. Background Technology

[0002] A heat exchanger, also known as a heat exchanger, is a device that transfers some of the heat from a hot fluid to a cold fluid. Heat exchangers play an important role in chemical, petroleum, power, food, and many other industrial production processes. In chemical production, heat exchangers are widely used as heaters, coolers, condensers, evaporators, and reboilers.

[0003] A heat exchanger with application number CN201320640161.8 includes a shell, a front cover at the front end of the shell, and a rear cover at the rear end. Baffles are installed inside the front and rear covers. Tubes are arranged longitudinally within the shell, with at least two rows of tubes arranged transversely along the shell. Each row consists of at least one straight tube, with both ends of the straight tube communicating with the front and rear cover cavities, respectively. By using baffles and at least two rows of tubes, the tube length through which the heat medium passes is significantly increased, at least twice that of a single row of tubes, resulting in better cooling performance. Furthermore, since the length of a single row of straight tubes does not need to be very long, it occupies less space. The baffles separate the tubes, enabling the heat medium to flow back and forth within the tubes. The tubes, composed of straight tubes, are easy to manufacture, resulting in a high finished product yield. However, the heat exchange time between the heat medium and the refrigerant in this heat exchanger cannot be adjusted as needed, thus failing to meet the requirements of users with higher demands. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art and to propose a heat exchanger that can adjust the heat exchange time between the heat medium and the cold medium as needed, so as to meet the needs of users with higher requirements and improve adaptability.

[0005] To achieve the above objectives, the present invention proposes a heat exchanger, comprising a shell, a cold medium inlet, a cold medium outlet, a partition, a sleeve, a drive mechanism, a heat exchange tube I, a hot medium inlet, and a hot medium outlet. The upper end of the shell is provided with a cold medium inlet, and the output end of the cold medium inlet is provided with a partition located inside the shell. The lower end of the partition is provided with a partition. The sleeve is slidably and sealingly fitted on the partition. A heat exchange space is left between the sleeve and the partition. The shell is provided with a drive mechanism for driving the sleeve to slide up and down. The lower end of the partition is provided with several notches for the internal space of the partition to communicate with the heat exchange space. The heat exchange space is provided with a heat exchange tube I. The shell is provided with a hot medium inlet and a hot medium outlet, which are respectively connected to the input end and output end of the heat exchange tube I. The lower end of the shell is provided with a cold medium outlet.

[0006] Preferably, the spacer is provided with a heat exchange tube II, and the output end of the heat exchange tube I is connected to the heat medium outlet through the heat exchange tube II.

[0007] Preferably, both heat exchange tube I and heat exchange tube II are spiral coil structures.

[0008] Preferably, the driving mechanism includes a push rod motor, a pull rod, a sliding sleeve, and a bracket. The push rod motor is mounted on the bracket. The drive end of the push rod motor is provided with a pull rod that extends into the housing and is fixedly connected to the sleeve. A sliding sleeve is provided between the pull rod and the housing.

[0009] Preferably, the cold medium outlet is equipped with a temperature sensor.

[0010] Preferably, the notches are evenly spaced in a circumferential shape.

[0011] Preferably, the upper end of the sleeve is provided with outlets that are evenly spaced in a circular pattern.

[0012] Preferably, the sleeve is provided with a flexible elastic tube, and the lower end of the flexible elastic tube is fixedly connected to the partition.

[0013] Preferably, the upper end of the spacer is provided with a flow equalization plate, and the flow equalization plate is provided with uniformly distributed through holes.

[0014] The beneficial effects of this invention are as follows: This invention provides a spacer inside the housing at the output end of the cold medium inlet, with a partition plate at the lower end of the spacer. The sleeve is slidably and sealed on the partition plate, leaving a heat exchange space between the sleeve and the spacer. The housing is equipped with a driving mechanism for driving the sleeve to slide up and down. The lower end of the spacer has several notches for communication between the internal space of the spacer and the heat exchange space. A heat exchange tube I is provided in the heat exchange space. Compared with the prior art, this invention can adjust the heat exchange time between the heat medium and the cold medium as needed, meet the needs of users with higher requirements, and improve adaptability.

[0015] The features and advantages of the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a heat exchanger according to the present invention.

[0017] In the figure: 1-shell, 2-cold medium inlet, 3-cold medium outlet, 4-partition plate, 5-sleeve, 6-drive mechanism, 7-partition sleeve, 8-heat exchange tube I, 9-heat medium inlet, 10-heat medium outlet, 11-notch, 12-heat exchange space, 13-heat exchange tube II, 14-temperature sensor, 15-flow outlet, 16-flow equalization plate, 17-through hole, 18-flexible elastic tube, 61-push rod motor, 62-pull rod, 63-sliding sleeve, 64-support. Implementation

[0018] See Figure 1This invention discloses a heat exchanger, comprising a shell 1, a cold medium inlet 2, a cold medium outlet 3, a partition 4, a sleeve 5, a drive mechanism 6, a spacer 7, a heat exchange tube 18, a heat medium inlet 9, and a heat medium outlet 10. The upper end of the shell 1 is provided with the cold medium inlet 2, and the outlet end of the cold medium inlet 2 is provided with a spacer 7 located inside the shell 1. The lower end of the spacer 7 is provided with the partition 4. The sleeve 5 is slidably and sealingly fitted onto the partition 4, and a heat exchange space 12 is left between the sleeve 5 and the spacer 7. The shell 1 is provided with a drive mechanism 6 for driving the sleeve 5 to slide up and down. The lower end of the spacer 7 is provided with several notches 11 for communication between the internal space of the spacer 7 and the heat exchange space 12. The heat exchange space 12 is provided with a heat exchange tube 18. The shell 1 is provided with a heat medium inlet 9 and a heat medium outlet 10, which are respectively connected to the input and output ends of the heat exchange tube 18. The lower end of the shell 1 is provided with a cold medium outlet 3, a heat medium inlet 9, and a heat medium outlet 10. The sleeve 7 is equipped with a heat exchange tube II13. The output end of the heat exchange tube I8 is connected to the heat medium outlet 10 through the heat exchange tube II13. Both the heat exchange tube I8 and the heat exchange tube II13 are spiral coil structures. The drive mechanism 6 includes a push rod motor 61, a pull rod 62, a sliding sleeve 63, and a bracket 64. The push rod motor 61 is mounted on the bracket 64. The drive end of the push rod motor 61 is equipped with a pull rod 62 that extends into the housing 1 and is fixedly connected to the sleeve 5. A sliding sleeve 63 is provided between the pull rod 62 and the housing 1. The cold medium outlet 3 is equipped with a temperature sensor 14. The notches 11 are evenly spaced in a circular pattern. The upper end of the sleeve 5 is equipped with an outlet 15 that is evenly spaced in a circular pattern. The sleeve 5 is equipped with a flexible elastic tube 18. The lower end of the flexible elastic tube 18 is fixedly connected to the partition plate 4. The upper end of the partition sleeve 7 is equipped with a flow equalization plate 16. The flow equalization plate 16 is equipped with evenly distributed through holes 17.

[0019] The working process of this invention: In the operation of the heat exchanger of the present invention, the cold medium enters the partition 7 through the cold medium inlet 2, and is then uniformly dispersed and its impact force reduced by the flow equalization plate 16, preheated by the heat exchange tube II 13, and passed through the gap 11. Finally, it enters the heat exchange space 12 and undergoes final heat exchange through the heat exchange tube I 8. The cold medium that has undergone heat exchange flows out through the outlet 15 into the bottom of the shell 1, and is finally output from the cold medium outlet 3.

[0020] Temperature sensor 14 monitors the temperature of the cold medium output from the cold medium outlet 3. When the temperature is lower than the required temperature range, push rod motor 61 is activated to pull rod 62 upward. Rod 62 pulls sleeve 5 upward, raising the position of outlet 15, increasing the heat exchange time of the cold medium, and increasing the temperature of the cold medium after heat exchange. When the temperature is higher than the required temperature range, push rod motor 61 is activated to push rod 62 downward. Rod 62 pushes sleeve 5 downward, reducing the heat exchange time of the cold medium and lowering the temperature of the cold medium after heat exchange.

[0021] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the scope of protection of the present invention.

Claims

1. A heat exchanger characterized by: The device includes a shell (1), a cold medium inlet (2), a cold medium outlet (3), a partition (4), a sleeve (5), a drive mechanism (6), a spacer sleeve (7), a heat exchange tube I (8), a heat medium inlet (9), and a heat medium outlet (10). The upper end of the shell (1) is provided with a cold medium inlet (2), and the output end of the cold medium inlet (2) is provided with a spacer sleeve (7) located inside the shell (1). The lower end of the spacer sleeve (7) is provided with a partition (4). The sleeve (5) is slidably and sealed on the partition (4). A heat exchange space (12) is left between the sleeve (5) and the spacer sleeve (7). The shell (1) is provided with a drive mechanism (6) for driving the sleeve (5) to slide up and down. The lower end of the spacer sleeve (7) is provided with several notches (11) for connecting the internal space of the spacer sleeve (7) with the heat exchange space (12). The heat exchange space (12) is provided with heat exchange tube I (8), the shell (1) is provided with heat medium inlet (9) and heat medium outlet (10) respectively connected to the input end and output end of heat exchange tube I (8), the lower end of the shell (1) is provided with cold medium outlet (3), the partition (7) is provided with heat exchange tube II (13), the output end of heat exchange tube I (8) is connected to heat medium outlet (10) through heat exchange tube II (13), the upper end of the sleeve (5) is provided with outlets (15) evenly spaced in a circular shape, the sleeve (5) is provided with flexible elastic tube (18), the lower end of the flexible elastic tube (18) is fixedly connected to partition (4), the upper end of the partition (7) is provided with flow equalization plate (16), the flow equalization plate (16) is provided with uniformly distributed through holes (17).

2. A heat exchanger as claimed in claim 1, characterised in that: Both heat exchange tube I (8) and heat exchange tube II (13) are spiral coil structures.

3. A heat exchanger as described in claim 1, characterized in that: The drive mechanism (6) includes a push rod motor (61), a pull rod (62), a sliding sleeve (63) and a bracket (64). The push rod motor (61) is mounted on the bracket (64). The drive end of the push rod motor (61) is provided with a pull rod (62) that extends into the housing (1) and is fixedly connected to the sleeve (5). A sliding sleeve (63) is provided between the pull rod (62) and the housing (1).

4. A heat exchanger as described in claim 1, characterized in that: The cold medium outlet (3) is equipped with a temperature sensor (14).

5. A heat exchanger as described in claim 1, characterized in that: The notches (11) are evenly spaced in a circular pattern.

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