CN219347391U

CN219347391U - Steam heat exchanger

Info

Publication number: CN219347391U
Application number: CN202222783377.1U
Authority: CN
Inventors: 陈亚景; 徐荣斌
Original assignee: Quanzhou Zhongtian Petrochemical Machinery Manufacturing Co ltd
Current assignee: Quanzhou Zhongtian Petrochemical Machinery Manufacturing Co ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-07-14
Anticipated expiration: 2032-10-21

Abstract

The utility model relates to the technical field of heat exchangers, in particular to a steam heat exchanger, which comprises a heat exchange box, wherein a primary heat exchange chamber and a secondary heat exchange chamber are sequentially arranged in the heat exchange box from left to right, and heat exchange mechanisms are arranged in the primary heat exchange chamber and the secondary heat exchange chamber. Through setting gradually one-level heat transfer room and second grade heat transfer room from a left side to the right side in the heat transfer incasement portion to utilize one-level circulating pump and second grade circulating pump to carry out the coolant circulation, when the feed efficiency of one-level circulating pump and second grade circulating pump is from low to high setting, can realize the fractional heat transfer condensation to steam, can realize carrying out fractional recovery to the liquid of different temperature gradient condensation, through setting up the dry ice holding vessel on the cooling tank, when the ooff valve on the dry ice holding vessel air supply pipe was opened, low temperature carbon dioxide was spouted fast, spout into the heat transfer medium from the jet of jet, can realize the rapid cooling to the heat transfer medium, effectively reduce the heat dissipation pressure of radiator.

Description

Steam heat exchanger

Technical Field

The utility model relates to the technical field of heat exchangers, in particular to a steam heat exchanger.

Background

Distillation apparatus is a separation technique carried out under high vacuum conditions. The method has the characteristics of low distillation temperature, high system vacuum degree, short material heating time, high separation degree and the like; the separation process is irreversible, and the phenomenon of boiling and bubbling is avoided. The method is particularly suitable for separating substances with high boiling point, heat sensitivity and easy oxidation, and has been widely applied to various industries such as extraction of vitamins and active ingredients of Chinese herbal medicines in the pharmaceutical industry, petrochemical industry, food industry, cosmetic industry, agriculture and the like;

in distillation plant, steam heat exchanger is indispensable condensation equipment, can retrieve the mode of evaporating the material through the condensation, realizes the purification to the material, current steam heat exchanger can't realize the condensation of gradient cooling in the condensation process, and current steam heat exchanger, its heat exchange tube is horizontal equipment mostly, after the condensation, the liquid after the condensation is remained easily in the heat exchange tube, to the material recovery not thoroughly, consequently, proposes a steam heat exchanger to above-mentioned problem.

Disclosure of Invention

The utility model aims to provide a steam heat exchanger, which is characterized in that a first-stage heat exchange chamber and a second-stage heat exchange chamber are sequentially arranged in a heat exchange box from left to right, a first-stage circulating pump and a second-stage circulating pump are utilized for circulating cooling media, when the feeding efficiency of the first-stage circulating pump and the second-stage circulating pump is arranged from low to high, the steam can be subjected to graded heat exchange condensation, a first-stage heat exchange assembly, a second-stage heat exchange assembly, a third-stage heat exchange assembly and a fourth-stage heat exchange assembly are respectively arranged in the first-stage heat exchange chamber and the second-stage heat exchange chamber, liquid condensed in the first-stage heat exchange assembly and the second-stage heat exchange assembly and liquid condensed in the third-stage heat exchange assembly and the fourth-stage heat exchange assembly are respectively fed into corresponding gas-liquid separators for gas-liquid separation, the liquids condensed in different temperature gradients can be subjected to graded recovery, and when a switch valve on an air supply pipe of a dry ice storage tank is opened, low-temperature carbon dioxide is rapidly sprayed into the heat exchange media from an air jet port of the air supply pipe, the heat exchange media can be rapidly cooled, and the heat dissipation pressure of the heat exchanger is effectively reduced, so that the heat dissipation problem in the background technology is solved.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a steam heat exchanger, comprising:

the heat exchange box is internally provided with a primary heat exchange chamber and a secondary heat exchange chamber from left to right in sequence, medium interfaces are arranged at the bottoms of the right sides of the primary heat exchange chamber and the secondary heat exchange chamber, medium outlets are arranged at the tops of the left sides of the primary heat exchange chamber and the secondary heat exchange chamber, the medium interfaces and the medium outlets are respectively connected with a circulating cooling system, and heat exchange mechanisms are arranged in the primary heat exchange chamber and the secondary heat exchange chamber;

the heat exchange mechanism comprises a primary heat exchange component and a secondary heat exchange component which are arranged in a primary heat exchange chamber, and a tertiary heat exchange component and a quaternary heat exchange component which are arranged in a secondary heat exchange chamber, wherein the primary heat exchange component, the secondary heat exchange component, the tertiary heat exchange component and the quaternary heat exchange component are respectively formed by two groups of flow guide pipes which are arranged on a top plate and a bottom plate of a heat exchange box and are connected with the two groups of convection boxes, a discharge port of the primary heat exchange component and a discharge port of the secondary heat exchange component bottom convection box are respectively connected with an air inlet and an air outlet of a gas-liquid separator through pipelines, and a discharge port of the tertiary heat exchange component and a discharge port of the quaternary heat exchange component bottom convection box are respectively connected with an air inlet and an air outlet of another gas-liquid separator through pipelines, and the secondary heat exchange component and the convection boxes at the tops of the tertiary heat exchange component are connected through air guide pipes.

As a preferable scheme, the convection box at the top of the primary heat exchange chamber is provided with an air inlet, and the convection box at the top of the quaternary heat exchange assembly is provided with an air outlet pipe.

As a preferable scheme, the honeycomb duct runs through the top and bottom panels of the heat exchange box, and the outer wall of the honeycomb duct is welded with the top and bottom panels of the heat exchange box in a sealing way.

As a preferred scheme, the circulating cooling system comprises a radiator and a cooling tank, wherein a first-stage supply pipe and a second-stage supply pipe which extend into the cooling tank are respectively arranged on medium interfaces of the first-stage heat exchange chamber and the second-stage heat exchange chamber, a first-stage circulating pump and a second-stage circulating pump are respectively arranged on the first-stage supply pipe and the second-stage supply pipe, a heat exchange cavity which horizontally penetrates through the radiator is arranged in the middle of the radiator, a feeding chamber and a discharging chamber are respectively arranged in a top plate and a bottom plate of the heat exchange cavity, radiating pipes which are communicated with the feeding chamber and the discharging chamber are respectively arranged between the feeding chamber and the discharging chamber, medium outlets of the first-stage heat exchange chamber and the second-stage heat exchange chamber are respectively connected with a feeding port of the feeding chamber through pipelines, and a discharging port of the discharging chamber is connected with the cooling tank through pipelines

As a preferable scheme, an air ejector is arranged on a bottom plate inside the cooling box, an air ejector is arranged on the air ejector, a dry ice storage tank is fixedly arranged on a right side plate of the cooling box, an air supply pipe of the dry ice storage tank stretches into the cooling box to be connected with the air ejector, and an on-off valve is arranged on the air supply pipe of the dry ice storage tank.

As a preferred scheme, the radiating fins which face horizontally are arranged on the radiating pipes, a fan mounting frame is arranged at the left end of a heat exchange cavity of the radiator, a radiating fan is arranged on the fan mounting frame, and a dust filter plate is arranged at the right end of the heat exchange cavity of the radiator.

As can be seen from the technical scheme provided by the utility model, the steam heat exchanger provided by the utility model has the beneficial effects that:

1. the first-stage heat exchange chamber and the second-stage heat exchange chamber are sequentially arranged in the heat exchange box from left to right, the first-stage circulating pump and the second-stage circulating pump are utilized for circulating cooling media, when the feeding efficiency of the first-stage circulating pump and the second-stage circulating pump is set from low to high, the fractional heat exchange condensation of steam can be realized, the first-stage heat exchange assembly, the second-stage heat exchange assembly, the third-stage heat exchange assembly and the fourth-stage heat exchange assembly are respectively arranged in the first-stage heat exchange chamber and the second-stage heat exchange chamber, the liquid condensed by the steam in the first-stage heat exchange assembly and the second-stage heat exchange assembly and the liquid condensed by the third-stage heat exchange assembly and the fourth-stage heat exchange assembly are respectively fed into corresponding gas-liquid separators for gas-liquid separation, and the fractional recovery of the liquid condensed by different temperature gradients can be realized;

2. through setting up dry ice holding vessel on the cooler bin, when the ooff valve on dry ice holding vessel air supply pipe opened, low temperature carbon dioxide spouted fast, spouted in the heat transfer medium from the jet of jet, can realize the rapid cooling to the heat transfer medium, effectively reduce the heat dissipation pressure of radiator.

Drawings

FIG. 1 is a schematic view of the overall structure of a steam heat exchanger according to the present utility model;

fig. 2 is a schematic sectional view of a steam heat exchanger according to the present utility model.

In the figure: 1. a heat exchange box; 11. a primary heat exchange chamber; 12. a secondary heat exchange chamber; 13. a primary supply pipe; 14. a secondary supply pipe; 15. a primary circulation pump; 16. a secondary circulation pump; 2. a cooling box; 21. a gas lance; 22. a dry ice storage tank; 23. a switch valve; 3. a heat sink; 31. a feed chamber; 32. a discharge chamber; 33. a heat radiating pipe; 34. a heat sink; 35. a fan mounting rack; 36. a heat radiation fan; 37. a dust filter plate; 4. a first heat exchange assembly; 41. a second heat exchange assembly; 42. a third heat exchange assembly; 43. a fourth heat exchange assembly; 44. a convection box; 45. a flow guiding pipe; 46. an air inlet; 47. a gas-liquid separator; 48. an air duct; 49. and an air outlet pipe.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In order to better understand the above technical solutions, the following detailed description will be given with reference to the accompanying drawings and the specific embodiments.

As shown in fig. 1-2, an embodiment of the present utility model provides a steam heat exchanger, comprising:

the heat exchange box 1 is characterized in that a primary heat exchange chamber 11 and a secondary heat exchange chamber 12 are sequentially arranged in the heat exchange box 1 from left to right, medium interfaces are arranged at the bottoms of the right sides of the primary heat exchange chamber 11 and the secondary heat exchange chamber 12, medium outlets are arranged at the tops of the left sides of the primary heat exchange chamber 11 and the secondary heat exchange chamber 12, the medium interfaces and the medium outlets are respectively connected with a circulating cooling system, and heat exchange mechanisms are arranged in the primary heat exchange chamber 11 and the secondary heat exchange chamber 12;

the heat exchange mechanism comprises a primary heat exchange component 4 and a secondary heat exchange component 41 which are arranged in the primary heat exchange chamber 11, and a tertiary heat exchange component 42 and a quaternary heat exchange component 43 which are arranged in the secondary heat exchange chamber 12, wherein the primary heat exchange component 4, the secondary heat exchange component 41, the tertiary heat exchange component 42 and the quaternary heat exchange component 43 are respectively composed of two groups of flow guide pipes 45 which are arranged on the top plate and the bottom plate of the heat exchange chamber 1 and are connected with the two groups of convection chambers 44, the discharge ports of the convection chambers 44 at the bottoms of the primary heat exchange component 4 and the secondary heat exchange component 41 are respectively connected with the air inlet and the air outlet of the gas-liquid separator 47 through pipelines, the discharge ports of the convection chambers 44 at the bottoms of the tertiary heat exchange component 42 and the quaternary heat exchange component 43 are respectively connected with the air inlet and the air outlet of the other gas-liquid separator 47 through pipelines, the convection chambers at the tops of the secondary heat exchange component 41 and the tertiary heat exchange component 42 are connected through air guide pipes 48, the convection chambers 44 at the tops of the primary heat exchange chamber 11 are provided with the air inlet 46, and the air outlet pipe 49 is arranged on the convection chamber 44 at the tops of the quaternary heat exchange component 43.

In the above device, the flow guide pipe 45 penetrates through the top and bottom panels of the heat exchange box 1, and the outer wall of the flow guide pipe 45 is welded with the top and bottom panels of the heat exchange box 1 in a sealing manner.

In the device, the circulating cooling system comprises a radiator 3 and a cooling box 2, a first-stage supply pipe 13 and a second-stage supply pipe 14 which extend into the cooling box 2 are respectively arranged on medium interfaces of the first-stage heat exchange chamber 11 and the second-stage heat exchange chamber 12, a first-stage circulating pump 15 and a second-stage circulating pump 16 are respectively arranged on the first-stage supply pipe 13 and the second-stage supply pipe 14, a heat exchange cavity which horizontally penetrates through the radiator 3 is arranged in the middle of the radiator 3, a feeding chamber 31 and a discharging chamber 32 are respectively arranged in a top plate and a bottom plate of the heat exchange cavity, a radiating pipe 33 which is communicated with the feeding chamber 31 and the discharging chamber 32 is arranged between the feeding chamber 31 and the discharging chamber 32, medium outlets of the first-stage heat exchange chamber 11 and the second-stage heat exchange chamber 12 are respectively connected with a feeding hole of the feeding chamber 31 through a pipeline, and a discharging hole of the discharging chamber 32 is connected with the cooling box 2 through a pipeline.

In the device, an air jet pipe 21 is arranged on a bottom plate inside a cooling box 2, an air jet port is arranged on the air jet pipe 21, a dry ice storage tank 22 is fixedly arranged on a right side plate of the cooling box 2, an air supply pipe of the dry ice storage tank 22 stretches into the cooling box 2 to be connected with the air jet pipe 21, and an on-off valve 23 is arranged on the air supply pipe of the dry ice storage tank 22.

In the device, the radiating fins 34 which are horizontally arranged on the radiating pipes 33 are arranged, the fan mounting frame 35 is arranged at the left end of the heat exchange cavity of the radiator 3, the radiating fan 36 is arranged on the fan mounting frame 35, and the dust filter plate 37 is arranged at the right end of the heat exchange cavity of the radiator 3.

Embodiments of the present utility model will be described in further detail below with reference to the attached drawings:

referring to fig. 1-2, the heat exchange box 1 comprises a first heat exchange chamber 11 and a second heat exchange chamber 12 which are sequentially arranged in the heat exchange box 1 from left to right, medium interfaces are respectively arranged at the bottoms of the right sides of the first heat exchange chamber 11 and the second heat exchange chamber 12, medium outlets are respectively arranged at the tops of the left sides of the first heat exchange chamber 11 and the second heat exchange chamber 12, a first heat exchange component 4 and a second heat exchange component 41 are arranged in the first heat exchange chamber 11 side by side, a third heat exchange component 42 and a fourth heat exchange component 43 are arranged in the second heat exchange chamber 12 side by side, the first heat exchange component 4, the second heat exchange component 41, the third heat exchange component 42 and the fourth heat exchange component 43 are respectively composed of two groups of flow guide pipes 45 which are arranged on a top plate and a bottom plate convection box 44 of the heat exchange box 1 and are connected with two groups of convection boxes 44, the discharge outlets of the bottom convection boxes 44 of the first heat exchange component 4 and the second heat exchange component 41 are respectively connected with an air inlet and an air outlet of a gas-liquid separator 47 through pipelines, the discharge outlets of the third heat exchange component 42 and the fourth heat exchange component 43 are respectively connected with an air outlet of the other gas-liquid separator 47 through pipelines, the top of the convection boxes 44 are arranged at the tops of the top of the convection boxes 44 are arranged at the top of the convection boxes 44;

the first-stage heat exchange chamber 11 and the second-stage heat exchange chamber 12 are sequentially arranged in the heat exchange box 1 from left to right, and the first-stage circulating pump 15 and the second-stage circulating pump 16 are utilized for circulating cooling media, so that when the feeding efficiency of the first-stage circulating pump 15 and the second-stage circulating pump 16 is set from low to high, the steam can be subjected to stage heat exchange condensation, and the first-stage heat exchange assembly 4, the second-stage heat exchange assembly 41, the third-stage heat exchange assembly 42 and the fourth-stage heat exchange assembly 43 are respectively arranged in the first-stage heat exchange chamber 11 and the second-stage heat exchange chamber 12, so that the condensed liquid of the steam in the first-stage heat exchange assembly 4 and the second-stage heat exchange assembly 41 and the condensed liquid in the third-stage heat exchange assembly 42 and the fourth-stage heat exchange assembly 43 respectively enter corresponding gas-liquid separators for gas-liquid separation, and the stage recovery of the condensed liquids with different temperature gradients can be realized;

referring to fig. 1, the flow guide pipe 45 penetrates through the top and bottom panels of the heat exchange box 1, and the outer wall of the flow guide pipe 45 is welded with the top and bottom panels of the heat exchange box 1 in a sealing manner, so that the tightness of the primary heat exchange chamber 11 and the secondary heat exchange chamber 12 is ensured.

Referring to fig. 1 and 2, the heat exchanger comprises a radiator 3 and a cooling tank 2, a first-stage supply pipe 13 and a second-stage supply pipe 14 which extend into the cooling tank 2 are respectively arranged on medium interfaces of the first-stage heat exchange chamber 11 and the second-stage heat exchange chamber 12, a first-stage circulating pump 15 and a second-stage circulating pump 16 are respectively arranged on the first-stage supply pipe 13 and the second-stage supply pipe 14, a heat exchange cavity which horizontally penetrates through the radiator 3 is arranged in the middle of the radiator 3, a feeding chamber 31 and a discharging chamber 32 are respectively arranged in a top plate and a bottom plate of the heat exchange cavity, a radiating pipe 33 which is communicated with the feeding chamber 31 and the discharging chamber 32 is arranged between the feeding chamber 31 and the discharging chamber 32, a medium outlet of the first-stage heat exchange chamber 11 and a medium outlet of the second-stage heat exchange chamber 12 are respectively connected with a feeding inlet of the feeding chamber 31 through pipelines, and a discharging outlet of the discharging chamber 32 is connected with the cooling tank 2 through pipelines, and when the first-stage circulating pump 15 and the second-stage circulating pump 16 are operated, cooling mediums in the first-stage heat exchange chamber 11 and the second-stage heat exchange chamber 12 can be circulated, and then cooling mediums in each heat exchange assembly can be cooled;

further, referring to fig. 1, an air jet pipe 21 is arranged on a bottom plate inside the cooling box 2, an air jet port is arranged on the air jet pipe 21, a dry ice storage tank 22 is fixedly arranged on a right side plate of the cooling box 2, an air supply pipe of the dry ice storage tank 22 stretches into the cooling box 2 to be connected with the air jet pipe 21, an on-off valve 23 is arranged on the air supply pipe of the dry ice storage tank 22, and when the on-off valve 23 on the air supply pipe of the dry ice storage tank 22 is opened, low-temperature carbon dioxide is rapidly ejected, and is ejected into a heat exchange medium from the air jet port of the air jet pipe 21, so that rapid cooling of the heat exchange medium can be realized, and the heat dissipation pressure of a radiator is effectively reduced;

referring to fig. 2, horizontally oriented cooling fins 34 are arranged on the cooling tube 33, a fan mounting frame 35 is arranged at the left end of a heat exchange cavity of the radiator 3, a cooling fan 36 is arranged on the fan mounting frame 35, a dust filter plate 37 is arranged at the right end of the heat exchange cavity of the radiator 3, and the radiator 3 is used for air-cooling a reflowing heat conducting medium.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A steam heat exchanger, characterized by: comprising the following steps:

the heat exchange box (1), a first-stage heat exchange chamber (11) and a second-stage heat exchange chamber (12) are sequentially arranged in the heat exchange box (1) from left to right, medium interfaces are respectively arranged at the bottoms of the right sides of the first-stage heat exchange chamber (11) and the second-stage heat exchange chamber (12), medium outlets are respectively arranged at the tops of the left sides of the first-stage heat exchange chamber (11) and the second-stage heat exchange chamber (12), the medium interfaces and the medium outlets are respectively connected with a circulating cooling system, and heat exchange mechanisms are respectively arranged in the first-stage heat exchange chamber (11) and the second-stage heat exchange chamber (12);

the heat exchange mechanism comprises a primary heat exchange component (4) and a secondary heat exchange component (41) which are arranged in a primary heat exchange chamber (11) and a tertiary heat exchange component (42) and a quaternary heat exchange component (43) which are arranged in a secondary heat exchange chamber (12), wherein the primary heat exchange component (4), the secondary heat exchange component (41), the tertiary heat exchange component (42) and the quaternary heat exchange component (43) are respectively formed by two groups of flow guide pipes (45) which are arranged on a top plate and a bottom plate of a heat exchange box (1) and are connected with two groups of convection boxes (44), the discharge ports of the primary heat exchange component (4) and the secondary heat exchange component (41) are respectively connected with the air inlet and the air outlet of a gas-liquid separator (47) through pipelines, and the discharge ports of the tertiary heat exchange component (42) and the quaternary heat exchange component (43) are respectively connected with the air inlet and the air outlet of another gas-liquid separator (47) through pipelines, and the connection between the convection boxes at the tops of the secondary heat exchange component (41) and the tertiary heat exchange component (42) is realized through the air guide pipes (48).

2. A steam heat exchanger as claimed in claim 1, wherein: an air inlet (46) is formed in a convection box (44) at the top of the primary heat exchange chamber (11), and an air outlet pipe (49) is formed in the convection box (44) at the top of the quaternary heat exchange assembly (43).

3. A steam heat exchanger as claimed in claim 1, wherein: the honeycomb duct (45) runs through the top and bottom panels of the heat exchange box (1), and the outer wall of the honeycomb duct (45) is welded with the top and bottom panels of the heat exchange box (1) in a sealing way.

4. A steam heat exchanger as claimed in claim 1, wherein: the circulating cooling system comprises a radiator (3) and a cooling box (2), a first-stage supply pipe (13) and a second-stage supply pipe (14) which extend into the cooling box (2) are respectively arranged on medium interfaces of the first-stage heat exchange chamber (11) and the second-stage heat exchange chamber (12), a first-stage circulating pump (15) and a second-stage circulating pump (16) are respectively arranged on the first-stage supply pipe (13) and the second-stage supply pipe (14), a heat exchange cavity which horizontally penetrates through the radiator (3) is arranged in the middle of the radiator (3), a feeding chamber (31) and a discharging chamber (32) are respectively arranged in a top plate and a bottom plate of the heat exchange cavity, a radiating pipe (33) which is communicated with the feeding chamber (31) and the discharging chamber (32) is arranged between the feeding chamber (31), and medium outlets of the first-stage heat exchange chamber (11) and the second-stage heat exchange chamber (12) are respectively connected with a feeding port of the feeding chamber (31) through pipelines, and a discharging port of the discharging chamber (32) is connected with the cooling box (2) through pipelines.

5. A steam heat exchanger as set forth in claim 4, wherein: be provided with jet-propelled pipe (21) on the inside bottom plate of cooling tank (2), be provided with the jet-propelled mouth on jet-propelled pipe (21), fixedly be provided with dry ice holding vessel (22) on the right side board of cooling tank (2), the air supply pipe of dry ice holding vessel (22) stretches into in cooling tank (2) and is connected with jet-propelled pipe (21), be provided with ooff valve (23) on the air supply pipe of dry ice holding vessel (22).

6. A steam heat exchanger as set forth in claim 4, wherein: the heat dissipation device is characterized in that horizontally-oriented radiating fins (34) are arranged on the radiating pipes (33), a fan mounting frame (35) is arranged at the left end of a heat exchange cavity of the radiator (3), a radiating fan (36) is arranged on the fan mounting frame (35), and a dust filter plate (37) is arranged at the right end of the heat exchange cavity of the radiator (3).