Exchanger air channel structure and shell and tube evaporator heat exchange assembly with same

Abstract

The utility model relates to the technical field of heat exchange equipment, in particular to an exchanger air channel structure and a shell and tube type evaporator heat exchange assembly with the same, which comprise a shell and tube type evaporator main body and a fin type heat exchanger main body, and an air inlet pipe and an air outlet pipe of the fin type heat exchanger main body are both fixedly connected with the shell and tube type evaporator main body. A heat exchange cavity is formed in the shell and tube evaporator body, and a shell and tube evaporator core is fixedly installed in the heat exchange cavity. According to the aluminum plate-fin heat exchanger, high-temperature fluid is primarily cooled through the high heat transfer coefficient of the aluminum plate-fin heat exchanger, the pre-cooled fluid enters a shell and tube evaporator, efficient heat exchange is still kept under the low temperature difference, residual heat is deeply recycled, the heat recovery efficiency is greatly improved, and compared with the prior art, the heat recovery efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchange equipment technical field especially relates to a heat exchanger air channel structure and have the shell and tube evaporator heat exchange assembly of this structure. BACKGROUND

[0002] Evaporator mainly comprises two parts of heating chamber and evaporation chamber, heating chamber provides the heat required for liquid evaporation, promotes liquid boiling vaporization, and evaporation chamber completely separates gas-liquid two phases, is a very important component in four big pieces of refrigeration, low-temperature condensate liquid passes through evaporator and exchanges heat with outside air, vaporizes and absorbs heat, reaches the effect of refrigeration, and evaporator is a commonly used equipment in heat exchange system.

[0003] In the prior art heat exchange system, the heat recovery efficiency is insufficient, and the prior art heat exchange equipment has the problem of large system pressure loss, which seriously hinders the effective transmission and utilization of energy, and directly leads to serious energy waste. UTILITY MODEL CONTENT

[0004] The utility model discloses a heat exchanger air channel structure and a shell and tube evaporator heat exchange assembly with the structure.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A heat exchanger air channel structure, comprising a plate-fin heat exchanger body, the upper side of the plate-fin heat exchanger body is provided with an air inlet and an air outlet at both ends respectively, and the lower side of the plate-fin heat exchanger body is provided with an air inlet pipe and an air outlet pipe at both ends respectively.

[0007] The plate-fin heat exchanger body is provided with an upper side pipe, a lower side pipe and two vertical pipes, the two ends of the two vertical pipes are communicated with the upper side pipe and the lower side pipe respectively, the upper side pipe is communicated with the air inlet, and the lower side pipe is communicated with the air inlet pipe.

[0008] The plate-fin heat exchanger body is provided with a left side pipe, a right side pipe and two horizontal pipes, the two ends of the horizontal pipes are communicated with the left side pipe and the right side pipe respectively, the left side pipe is communicated with the air outlet pipe, and the right side pipe is communicated with the air outlet.

[0009] The shell-and-tube evaporator heat exchange assembly with the structure comprises a shell-and-tube evaporator body and the finned heat exchanger body provided in the technical solutions, the air inlet pipe and the air outlet pipe of the finned heat exchanger body are fixedly connected with the shell-and-tube evaporator body, a heat exchange cavity is arranged in the shell-and-tube evaporator body, and a shell-and-tube evaporator core is fixedly arranged in the heat exchange cavity.

[0010] Preferably, three mounting holes are arranged in the shell-and-tube evaporator core, and a plurality of flow distribution plates are fixedly arranged in the three mounting holes.

[0011] Preferably, a separation cavity is arranged at one end of the shell-and-tube evaporator body, the separation cavity is communicated with the heat exchange cavity, the separation cavity is communicated with the air outlet pipe, and a wire mesh gas-liquid separator is fixedly arranged in the separation cavity.

[0012] Preferably, a gas gathering plate is fixedly arranged in the shell-and-tube evaporator body, and the gas gathering plate is located between the separation cavity and the shell-and-tube evaporator core.

[0013] Preferably, a baffle plate is fixedly arranged on the upper surface and the lower surface of the shell-and-tube evaporator core, the two baffle plates are staggered, and an S-shaped path is formed between the two baffle plates and the plurality of mounting holes.

[0014] In the utility model, the beneficial effects are:

[0015] The modular combination of the aluminum plate finned heat exchanger and the shell-and-tube evaporator is adopted, the aluminum plate finned heat exchanger is used for preliminarily cooling the high-temperature fluid by utilizing the high heat transfer coefficient, the fluid cooled preliminarily enters the shell-and-tube evaporator, high-efficiency heat exchange is still maintained under the low temperature difference, the residual heat is deeply recovered, the heat recovery efficiency is greatly improved, and the heat recovery efficiency is significantly improved compared with the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A three-dimensional structure schematic view of an exchanger air channel structure and a shell-and-tube evaporator heat exchange assembly with the structure are provided in the utility model;

[0017] Figure 2 A sectional structure schematic view of an exchanger air channel structure and a shell-and-tube evaporator heat exchange assembly with the structure are provided in the utility model;

[0018] Figure 3 A cross-flow structure fluid flow schematic view of an exchanger air channel structure is provided;

[0019] Figure 4 A counter-flow structure fluid flow schematic view of an exchanger air channel structure is provided;

[0020] Figure 5A schematic view of fluid flow in a counter flow structure of an air passage structure of an exchanger.

[0021] In the figure: 1 plate-fin heat exchanger body, 101 air inlet, 102 air outlet, 103 air inlet pipe, 104 air outlet pipe, 105 upper side pipe, 106 lower side pipe, 107 vertical pipe, 108 left side pipe, 109 right side pipe, 110 horizontal pipe, 2 shell and tube evaporator body, 201 shell and tube evaporator core, 202 flow divider, 203 wire mesh gas-liquid separator, 204 gas collecting plate, 205 partition plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0023] Embodiment 1

[0024] Reference Figures 1-3 An air passage structure of an exchanger, comprising a plate-fin heat exchanger body 1, the plate-fin heat exchanger body 1 is provided with an air inlet 101 and an air outlet 102 at the upper side of both ends respectively, the plate-fin heat exchanger body 1 is provided with an air inlet pipe 103 and an air outlet pipe 104 at the lower side of both ends respectively, the plate-fin heat exchanger body 1 is provided with an upper side pipe 105, a lower side pipe 106 and two vertical pipes 107, the two vertical pipes 107 are communicated with the upper side pipe 105 and the lower side pipe 106 respectively, the upper side pipe 105 is communicated with the air inlet 101, the lower side pipe 106 is communicated with the air inlet pipe 103, the plate-fin heat exchanger body 1 is provided with a left side pipe 108, a right side pipe 109 and two horizontal pipes 110, the two ends of the horizontal pipes 110 are communicated with the left side pipe 108 and the right side pipe 109 respectively, the left side pipe 108 is communicated with the air outlet pipe 104, and the right side pipe 109 is communicated with the air outlet 102.

[0025] The internal pipe arrangement of the plate-fin heat exchanger adopts a cross flow structure design, the flow directions of the two fluids are perpendicular to each other, forming cross flow, the hot fluid flows in from the upper side pipe 105, flows downward along the vertical pipe 107 to the lower side pipe 106, the cold fluid flows in from the left side pipe 108, flows along the horizontal pipe 110 to the right side pipe 109, and the heat exchanger is divided into flow channel regions perpendicular to each other, so that the fluid flow directions cross, the structure is compact, and it is suitable for scenes where the flow rates of the two fluids are quite different.

[0026] The shell-and-tube evaporator body 2 and the finned heat exchanger body 1 provided in the technical solutions above are fixedly connected with the shell-and-tube evaporator body 2, a heat exchange cavity is formed in the shell-and-tube evaporator body 2, a shell-and-tube evaporator core 201 is fixedly installed in the heat exchange cavity, three installation holes are formed in the shell-and-tube evaporator core 201, a plurality of diffusion plates 202 are fixedly installed in the three installation holes, the diffusion plates 202 in the two adjacent installation holes are arranged perpendicularly to each other, a separation cavity is arranged at one end of the shell-and-tube evaporator body 2, the separation cavity is in communication with the heat exchange cavity and the outlet pipe 104, a wire mesh gas-liquid separator 203 is fixedly and obliquely installed in the separation cavity, a gas gathering plate 204 is fixedly installed in the shell-and-tube evaporator body 2, the gas gathering plate 204 is located between the separation cavity and the shell-and-tube evaporator core 201, and a baffle 205 is fixedly installed on the upper and lower surfaces of the shell-and-tube evaporator core 201, the two baffles 205 are arranged alternately, and an S-shaped path is formed between the two baffles 205 and the plurality of installation holes.

[0027] When the fluid that needs to be heat exchanged flows through the heat exchange assembly, it first passes through the aluminum plate finned heat exchanger, where the first heat exchange is performed, the temperature of the fluid is reduced, and the heat load of the evaporator is reduced, then the fluid enters the shell-and-tube evaporator, in the evaporator, the fluid passes through the shell-and-tube evaporator core 201, and due to the diffusion and diffusion plates 202, the fluid is fully diffused and diffused, uniformly distributed in each area of the separation cavity, and fully heat exchanged with the heat exchange medium in the evaporator. During the heat exchange process, the gas gathering plate 204 plays a guiding and gas gathering role for the fluid, so that the fluid can flow more orderly, after the heat exchange is completed, the moisture in the fluid is separated out by the wire mesh separator 203, and the clean gas is discharged through the set outlet.

[0028] The aluminum plate finned heat exchanger and the shell-and-tube evaporator are modularized and combined, which greatly improves the heat recovery efficiency, compared with the prior art, the heat recovery efficiency is significantly improved, the diffusion and diffusion plates 202, the gas gathering plate 204 and the wire mesh separator 203 in the evaporator and other structures make the airflow fully diffuse and diffuse, improve the heat exchange efficiency and the gas-water separation effect, and further reduce the system energy consumption.

[0029] Example 2

[0030] Reference Figure 4, the plate-fin heat exchanger is internally provided with two groups of flow paths composed of upper side pipes 105, lower side pipes 106 and vertical pipes 107, hot fluid flows into the upper side pipes 105 of one group, flows to the lower side pipes 106 along the vertical pipes 107, cold fluid flows into the upper side pipes 105 of the other group, flows to the lower side pipes 106 along the vertical pipes 107, the flow directions of the fluids in adjacent flow channels are strictly opposite, the counter-flow path is formed, the heat transfer temperature difference is large, the heat exchange efficiency is the highest, and the plate-fin heat exchanger is suitable for scenes requiring maximum heat recovery.

[0031] Embodiment 3

[0032] With reference to Figure 5 , the plate-fin heat exchanger is internally provided with two groups of flow paths composed of upper side pipes 105, lower side pipes 106 and vertical pipes 107, hot fluid flows into the upper side pipes 105 of one group, flows to the lower side pipes 106 along the vertical pipes 107, cold fluid flows into the upper side pipes 105 of the other group, flows to the lower side pipes 106 along the vertical pipes 107, the flow directions of the fluids in adjacent flow channels are strictly opposite, the counter-flow path is formed, the heat transfer temperature difference is large, the heat exchange efficiency is the highest, and the plate-fin heat exchanger is suitable for scenes requiring maximum heat recovery.

[0033] In different process scenes, the requirements for outlet gas temperature are different, and by replacing aluminum plate-fin heat exchangers with different structures, the control of heat exchange efficiency is realized.

[0034] In the utility model, when the fluid needing heat exchange flows through the heat exchange assembly, firstly, the fluid passes through the aluminum plate-fin heat exchanger, and the first heat exchange is carried out here, the temperature of the fluid is reduced, and the heat load of the evaporator is reduced, then, the fluid enters the shell and tube evaporator, in the evaporator, the fluid passes through the shell and tube evaporator core 201, and because the diffusion and shunt plate 202 is arranged, the fluid is fully diffused and shunted, and is uniformly distributed in each area of the separation cavity, and fully exchanges heat with the heat exchange medium in the evaporator, in the heat exchange process, the gas flow gathering plate 204 plays the role of guiding and flow gathering of the fluid, so that the fluid can flow more orderly, after the heat exchange is completed, the moisture in the fluid is separated out through the wire mesh separator 203, and the clean gas is discharged through the set outlet.

[0035] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An exchanger air duct structure comprising a plate-fin heat exchanger body (1), characterized by, The plate-fin heat exchanger body (1) is provided with an air inlet (101) and an air outlet (102) at the upper two ends, and an air inlet pipe (103) and an air outlet pipe (104) at the lower two ends; The plate-fin heat exchanger body (1) is provided with an upper pipe (105), a lower pipe (106) and two vertical pipes (107), the two vertical pipes (107) are communicated with the upper pipe (105) and the lower pipe (106) respectively, the upper pipe (105) is communicated with the air inlet (101), and the lower pipe (106) is communicated with the air inlet pipe (103); The plate-fin heat exchanger body (1) is provided with a left pipe (108), a right pipe (109) and two horizontal pipes (110), the two horizontal pipes (110) are communicated with the left pipe (108) and the right pipe (109) respectively, the left pipe (108) is communicated with the air outlet pipe (104), and the right pipe (109) is communicated with the air outlet (102).

2. A shell-and-tube evaporator heat exchange assembly having the structure, comprising a shell-and-tube evaporator body (2) and a finned heat exchanger body (1) as claimed in claim 1, characterized in that, The air inlet pipe (103) and the air outlet pipe (104) of the plate-fin heat exchanger body (1) are fixedly connected with the shell-and-tube evaporator body (2), the shell-and-tube evaporator body (2) is internally provided with a heat exchange cavity, and the shell-and-tube evaporator core (201) is fixedly installed in the heat exchange cavity.

3. A shell and tube evaporator heat exchange assembly having the structure of claim 2, wherein, The shell-and-tube evaporator core (201) is internally provided with three mounting holes, a plurality of flow distribution plates (202) are fixedly installed in the three mounting holes, and the flow distribution plates (202) in the two adjacent mounting holes are arranged perpendicularly.

4. A shell and tube evaporator heat exchange assembly having the structure according to claim 3, wherein, One end of the shell-and-tube evaporator body (2) is provided with a separation cavity, the separation cavity is communicated with the heat exchange cavity, the separation cavity is communicated with the air outlet pipe (104), and a wire mesh gas-liquid separator (203) is fixedly and obliquely installed in the separation cavity.

5. A shell and tube evaporator heat exchange assembly having the structure as claimed in claim 2, wherein, The shell-and-tube evaporator body (2) is fixedly provided with a gas collecting plate (204), and the gas collecting plate (204) is located between the separation cavity and the shell-and-tube evaporator core (201).

6. A shell and tube evaporator heat exchange assembly having the structure as claimed in claim 2, wherein, The shell-and-tube evaporator core (201) is fixedly provided with a baffle (205) on the upper surface and the lower surface, the two baffles (205) are staggered, and an S-shaped path is formed between the two baffles (205) and the plurality of mounting holes.

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