Spiral heat exchanger

Abstract

The invention relates to the technical field of heat exchangers and discloses a spiral heat exchanger which comprises a heat exchanger shell, a heat exchanger core assembly and a water baffle assembly. An air inlet and an air outlet are formed in the two ends of the heat exchanger shell respectively, the heat exchanger core assembly is located in the heat exchanger shell, and the water baffle assembly is located between the air outlet and the heat exchanger core assembly. The heat exchanger core assembly comprises a spiral pipe fixing side plate, a spiral pipe fixing frame, a liquid conveying pipe and a plurality of spiral heat exchange pipes. The spiral pipe fixing side plates and the spiral pipe fixing frame are used for fixing the spiral heat exchange pipes, the liquid conveying pipe is used for conveying refrigerants, a liquid inlet and a liquid outlet are formed in the air inlet end of the heat exchanger shell, and the refrigerants flow in from the liquid inlet, pass through the liquid conveying pipe and the spiral heat exchange pipes and flow out from the liquid outlet. The spiral heat exchange pipe is a continuous circular heat exchange pipeline; the water baffle assembly is used for blocking water carried in the cooling air flow and enabling the cooling air flow to be uniform; through the spiral design of the heat exchange tube, the outer wall of the heat exchange tube has a certain radian, dirt can slide down along the outer wall of the heat exchange tube, and the situation that the heat exchange efficiency is affected by dirt accumulation is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of heat exchangers, and in particular relates to a spiral heat exchanger. Background Art

[0002] Heat exchanger is a device that transfers part of the heat of hot fluid to cold fluid, also known as heat exchanger. Heat exchanger plays an important role in chemical, petroleum, power, food and many other industrial production.

[0003] At present, underground refrigeration equipment has direct requirements of small size, high efficiency and easy maintenance. In particular, the heat exchanger has almost harsh operating conditions; corresponding requirements are put forward for heat transfer efficiency, self-cleaning ability, and suitability for use in high dust, high temperature, high humidity and high corrosion environments.

[0004] Chinese utility model patent CN203024624U discloses a shell and tube heat exchanger of a serpentine heat exchange tube, comprising a shell and tube shell and a group or array of serpentine heat exchange tubes therein, wherein the shell and tube shell is a circular straight cylinder with end covers at both ends, and the cylindrical wall or end cover of the circular straight cylinder has one or a group of heat exchange medium 1 inlet, one or a group of heat exchange medium 1 outlet, one or a group of heat exchange medium 2 inlet and one or a group of heat exchange medium 2 outlet, the serpentine heat exchange tube is a continuous U-shaped bent heat exchange pipe, the array of serpentine heat exchange tubes is in parallel, the two ends of the serpentine heat exchange tube are respectively connected to the heat exchange medium 2 inlet and outlet, the serpentine heat exchange tube is fixed in the shell and tube shell by a bracket, the space formed by the heat exchange medium 1 inlet-shell and tube shell space-heat exchange medium 1 outlet and the space formed by the heat exchange medium 2 inlet-serpentine heat exchange tube space-heat exchange medium 2 outlet are not connected to each other; the heat exchange tubes are arranged in a serpentine horizontal manner, which easily causes dirt accumulation on the surface of the heat exchange tubes.

[0005] Chinese invention patent CN109029051A discloses a square spiral flat tube heat exchanger and its manufacturing method, which uses square spiral flat tubes and square openings to replace traditional round spiral flat tubes and round openings. Square tubes are more likely to cause dirt accumulation than round tubes. Figure 2 It can be seen that the spiral of the square spiral flat tube is slightly concave inward, which makes it more likely for dirt to accumulate. Summary of the invention

[0006] The object of the present invention is to provide a spiral heat exchanger to solve the problem of easy scaling on the surface of heat exchange tubes of the heat exchanger existing in the prior art.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A spiral heat exchanger comprises a heat exchanger shell, a heat exchanger core assembly and a water baffle assembly; the two ends of the heat exchanger shell are respectively provided with an air inlet and an air outlet, the heat exchanger core assembly is located in the heat exchanger shell, and the water baffle assembly is located between the air outlet and the heat exchanger core assembly; the heat exchanger core assembly comprises a spiral tube fixing side plate, a spiral tube fixing frame, an infusion pipe and a plurality of spiral heat exchange tubes; the spiral tube fixing side plate and the spiral tube fixing frame are used to fix the spiral heat exchange tube, the infusion pipe is used to transport refrigerant, and the air inlet end of the heat exchanger shell is provided with a liquid inlet and a liquid outlet, the refrigerant flows in from the liquid inlet, passes through the infusion pipe and the spiral heat exchange tube, and flows out from the liquid outlet; the spiral heat exchange tube is a continuous circular heat exchange pipe; the water baffle assembly is used to block the moisture carried in the cooling airflow and make the cooling airflow uniform.

[0009] The spiral heat exchanger of the present invention has a spiral arrangement of the heat exchange tube so that the outer wall of the heat exchange tube has a certain curvature. When there is a small amount of dirt on the outer wall of the heat exchange tube, the dirt can slide down along the outer wall of the heat exchange tube to avoid the dirt from being deposited on the outer wall of the heat exchange tube, thereby affecting the heat exchange efficiency of the heat exchange tube. In the prior art, the heat exchange tube is usually arranged in a serpentine flat manner, and the dirt is easily deposited on the surface of the heat exchange tube, affecting the heat exchange efficiency of the heat exchange tube.

[0010] Optionally, the water baffle assembly includes a water baffle and a water baffle frame; the water baffle frame is disposed on the heat exchanger housing, and the water baffle is disposed on the water baffle frame.

[0011] The water baffle assembly is provided to block the moisture carried in the cooling air flow and make the cooling air flow uniform.

[0012] Optionally, the infusion pipe includes a liquid inlet pipeline, a liquid spray pipeline, a liquid inlet head connecting pipe, a porous liquid separator head and a liquid outlet head connecting pipe which are connected in sequence; and also includes a liquid outlet pipeline, which is arranged between the spiral heat exchange tube and the liquid outlet.

[0013] Through the setting of the infusion pipe, the refrigerant enters from the liquid inlet, passes through the liquid inlet pipeline, the spray pipeline and the liquid inlet distributor head connecting pipe, enters the porous distributor head for spraying, then passes through the liquid outlet distributor head connecting pipe to enter the spiral heat exchange tube, and finally flows out from the liquid outlet through the liquid outlet pipeline.

[0014] Optionally, the fixing frame between the spiral tubes is T-shaped or L-shaped.

[0015] Optionally, a flushing component is also included, which includes a water inlet, a water outlet, a flushing pipeline and a nozzle, the water inlet and the water outlet are respectively arranged at both ends of the heat exchanger shell, the flushing pipeline is located between the water inlet and the spiral heat exchange tube, and the nozzle is arranged on the flushing pipeline, and the nozzle sprays toward the spiral heat exchange tube.

[0016] Through the setting of the flushing component, flushing water enters from the water inlet, passes through the flushing pipeline, and is sprayed from the nozzle to the spiral heat exchange tube. It is carried by the cooling airflow, completes heat exchange with the refrigerant in the spiral heat exchange tube, and is then discharged through the water outlet to achieve flushing heat exchange.

[0017] Optionally, the heat exchanger shell is made of carbon steel or stainless steel; the carbon steel surface is hot-dip galvanized.

[0018] Optionally, the spiral heat exchange tube and the liquid infusion tube are made of stainless steel.

[0019] Carbon steel has the characteristics of high strength and good durability, and its surface is galvanized to enhance its corrosion resistance. Stainless steel itself has a certain hardness and good corrosion resistance.

[0020] Optionally, the liquid inlet and the liquid outlet are connected to external equipment via flanges.

[0021] The overall sealing of the equipment is enhanced by flange connection.

[0022] Beneficial effects: The spiral heat exchanger of the present invention has the following advantages:

[0023] (1) The outer wall of the heat exchange tube has a certain curvature by the spiral arrangement of the heat exchange tube. When there is a small amount of dirt on the outer wall of the heat exchange tube, the dirt can slide down along the outer wall of the heat exchange tube to prevent the dirt from being deposited on the outer wall of the heat exchange tube, thereby affecting the heat exchange efficiency of the heat exchange tube. In the prior art, the heat exchange tube is usually arranged in a serpentine flat layout, and the dirt is easily deposited on the surface of the heat exchange tube, affecting the heat exchange efficiency of the heat exchange tube. On the other hand, the heat exchange tube is a continuous circular heat exchange pipe, which increases the heat transfer area, thereby improving the heat exchange efficiency of the heat exchanger;

[0024] (2) The spiral heat exchange tube is made of stainless steel, so that the surface of the spiral heat exchange tube is not easy to scale, reducing the impact of scaling on the heat exchange efficiency; at the same time, the cleaning cost of the heat exchange tube is reduced;

[0025] (3) The spiral heat exchange tube replaces the traditional serpentine heat exchange tube, which makes the processing simpler and saves processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the shell and tube heat exchanger with serpentine heat exchange tubes in patent CN203024624U;

[0027] Figure 2 This is a schematic diagram of the structure of the square spiral flat tube heat exchanger in patent CN109029051A;

[0028] Figure 3 This is a schematic diagram of the structure of the square spiral flat tube in patent CN109029051A;

[0029] Figure 4 Schematic diagram of the overall structure of the spiral heat exchanger in Example 1;

[0030] Figure 5 Schematic diagram of the overall structure of the spiral heat exchange tube in the embodiment;

[0031] Figure 6 It is a side view of the air inlet side of the spiral heat exchanger in Example 1;

[0032] Figure 7 It is a side view of the air outlet side of the spiral heat exchanger in Example 1;

[0033] Figure 8 Schematic diagram of the overall structure of the spiral heat exchanger in Example 2;

[0034] Fig. 9 It is a side view of the air inlet side of the spiral heat exchanger in Example 2;

[0035] Fig.10 This is a side view of the air outlet side of the spiral heat exchanger in Example 2.

[0036] In the figure: 1. heat exchanger shell; 11. air inlet; 12. air outlet; 13. liquid inlet; 14. liquid outlet; 2. heat exchanger core assembly; 21. spiral tube fixing side plate; 22. spiral tube fixing frame; 23. liquid infusion tube; 231. liquid inlet pipeline; 232. liquid spray pipeline; 233. liquid inlet and outlet head connecting pipe; 234. multi-porous liquid outlet head; 235. liquid outlet and outlet head connecting pipe; 236. liquid outlet pipeline; 24. spiral heat exchange tube; 3. water baffle assembly; 31. water baffle; 32. water baffle frame; 4. flushing assembly; 41. water inlet; 42. water outlet; 43. flushing pipeline; 44. nozzle. DETAILED DESCRIPTION

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0038] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0039] In the description of the present invention, it should be understood that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0040] like Figure 1 As shown, it is a structural schematic diagram of a shell and tube heat exchanger with a serpentine heat exchange tube in a shell and tube heat exchanger with a serpentine heat exchange tube in Chinese utility model patent CN203024624U. Multiple groups of heat exchange tubes are arranged, and the multiple groups of heat exchange tubes are connected in parallel; each heat exchange tube is serpentine, and two adjacent heat exchange tubes are tightly fitted together; wherein, the serpentine heat exchange tube is a continuous U-shaped bent heat exchange pipe; the horizontal sections of multiple U-shaped bent heat exchange pipes are horizontally arranged together to form an undulating surface. When the heat exchanger is used for a long time, the dirt on the surface will fall and accumulate on this undulating surface, reducing the heat exchange efficiency of the heat exchanger.

[0041] like Figure 2-Figure 3 As shown, it is a schematic diagram of the structure of a square spiral flat tube heat exchanger and a square spiral flat tube in a square spiral flat tube heat exchanger and a manufacturing method thereof in Chinese invention patent CN109029051A; Figure 2 It can be seen that the cross-section of the heat exchanger is square, and square spiral flat tubes and square openings are used to replace traditional round spiral flat tubes and round openings. Square tubes are more likely to cause dirt accumulation than round tubes; Figure 3 It can be seen that the spiral of the square spiral flat tube is slightly concave inward, which makes it more likely for dirt to accumulate.

[0042] The present invention aims to solve the problem in the prior art that dirt is easily accumulated on the surface of the heat exchange tube through the design of the heat exchange tube.

[0043] Example 1

[0044] like Figure 4-Figure 7As shown, this embodiment provides a spiral heat exchanger, including a heat exchanger shell 1, a heat exchanger core assembly 2 and a water baffle assembly 3; the heat exchanger shell 1 is provided with an air inlet 11 and an air outlet 12 at both ends, and specifically, the heat exchanger shell 1 is provided with end covers at both ends, and the air inlet 11 and the air outlet 12 are respectively arranged on the end covers at both ends; the heat exchanger core assembly 2 is located in the heat exchanger shell 1, and the water baffle assembly 3 is located between the air outlet 12 and the heat exchanger core assembly 2; the heat exchanger core assembly 2 includes a spiral tube fixing side plate 21, a spiral tube fixing frame 22, a liquid infusion tube 23 and a plurality of spiral heat exchange tubes 24; the spiral tube fixing side plate 21 and the spiral tube fixing frame 22 are used to fix the spiral heat exchange tube 24 Specifically, the spiral tube fixing side plate 21 is fixed to the inner walls of the front and rear sides of the heat exchanger shell 1 by bolts, the spiral tube fixing frame 22 is arranged between the spiral heat exchange tubes 24 and on the uppermost and lowermost spiral heat exchange tubes 24, and the two ends of the spiral tube fixing frame 22 are respectively welded to the spiral tube fixing side plates 21 on the front and rear sides; the infusion pipe 23 is used to transport the refrigerant, and the air inlet 11 end of the heat exchanger shell 1 is provided with a liquid inlet 13 and a liquid outlet 14, and the refrigerant flows in from the liquid inlet 13, passes through the infusion pipe 23 and the spiral heat exchange tube 24, and flows out from the liquid outlet 14; the spiral heat exchange tube 24 is a continuous circular heat exchange pipe; the water baffle assembly 3 is used to block the moisture carried in the cooling airflow and make the cooling airflow uniform.

[0045] For details, see Figure 5 The spiral heat exchange tube 24 is a continuous circular heat exchange pipe. Adjacent circular heat exchange pipes are tightly attached to each other. The two ends of the spiral heat exchange tube 24 are respectively provided with an inlet end and an outlet end. Figure 7 In this embodiment, the spiral heat exchange tubes 24 are arranged in layers and stacked, and two adjacent spiral heat exchange tubes 24 are tangent to each other. Through the arrangement of the spiral heat exchange tubes 24, the outer wall of the spiral heat exchange tubes 24 has a certain curvature. When there is a small amount of dirt on the outer wall of the spiral heat exchange tubes 24, the dirt can slide down along the outer wall of the spiral heat exchange tubes 24, thereby preventing the dirt from being deposited on the outer wall of the spiral heat exchange tubes 24, thereby affecting the heat exchange efficiency of the spiral heat exchange tubes 24. Compared with the serpentine or square heat exchange tubes in the prior art, it is not easy to cause dirt accumulation and affect the heat exchange efficiency of the heat exchanger. The layered stacking arrangement increases the heat transfer area while minimizing the volume of the heat exchanger.

[0046] In this embodiment, the heat exchanger shell 1 is rectangular, and the air inlet 11 and the air outlet 12 are circular. However, this is only for the convenience of production and processing and the aesthetic appearance. The shapes of the heat exchanger shell 1, the air inlet 11 and the air outlet 12 are not limited.

[0047] Common refrigerants include R22, R407C, R132a, etc. In the present embodiment, taking R22 as an example, R22 flows in from the liquid inlet 13, passes through the liquid infusion tube 23 and the spiral heat exchange tube 24, and flows out from the liquid outlet 14, thereby realizing the refrigerant circulation.

[0048] In an optional embodiment, the water baffle assembly 3 includes a water baffle 31 and a water baffle frame 32; the water baffle frame 32 is arranged on the heat exchanger housing 1, and the water baffle 31 is arranged on the water baffle frame 32; for details, see Figure 6 The water baffle plate 31 is closely arranged along the water baffle plate frame 32, so that the water-blocking effect of the water baffle plate 31 is better, and the cooled gas is discharged from the gap between the water baffle plates 31; through the setting of the water baffle plate assembly 3, it is used to block the moisture carried in the cooling airflow and make the cooling airflow uniform.

[0049] In an alternative embodiment, see Figure 4 The liquid infusion pipe 23 includes a liquid inlet pipeline 231, a liquid spraying pipeline 232, a liquid inlet and liquid outlet head connecting pipe 233, a porous liquid outlet head 234 and a liquid outlet head connecting pipe 235 connected in sequence; and also includes a liquid outlet pipeline 236, which is arranged between the spiral heat exchange tube 24 and the liquid outlet 14; in the specific implementation process, the refrigerant reaches the porous liquid outlet head 234 along the liquid inlet pipeline 231, the liquid spraying pipeline 232, and the liquid inlet and liquid outlet head connecting pipe 233; and is sprayed out from the porous liquid outlet head 234 , and then enters the spiral heat exchange tube 24 through the liquid outlet head connecting pipe 235, and then reaches the liquid outlet pipeline 236 along the spiral heat exchange tube 24, and is discharged through the liquid outlet port 14; specifically, a plurality of circular holes are arranged on the porous liquid outlet head 234, and each circular hole is individually connected to a liquid outlet head connecting pipe 235, and then connected to the inlet end of the spiral heat exchange tube 24; similarly, the outlet end of the spiral heat exchange tube 24 is also through a separate branch pipe, and finally gathered to the main pipe, and discharged through the liquid outlet port 14.

[0050] Through the setting of the infusion pipe 23, the refrigerant enters from the liquid inlet 13, passes through the liquid inlet pipeline 231, the spray pipeline 232 and the liquid inlet head connecting pipe 233, enters the porous liquid separator 234 for spraying, and then passes through the liquid outlet head connecting pipe 235 to enter the spiral heat exchange tube 24, and finally flows out from the liquid outlet 14 through the liquid outlet pipeline 236.

[0051] In an optional embodiment, the spiral tube fixing frame 22 is T-shaped or L-shaped; the T-shaped frame can be inserted into the spiral tube gap to achieve positioning in three directions, while the L-shaped frame can only achieve positioning in two directions; in the specific implementation process, several spiral tube fixing frames 22 can be set.

[0052] In an optional embodiment, the heat exchanger shell 1 is made of carbon steel or stainless steel; the carbon steel surface is hot-dip galvanized; the spiral heat exchange tube 24 and the infusion tube 23 are made of stainless steel;

[0053] Carbon steel has the characteristics of high strength and good durability, and its surface is galvanized to enhance its corrosion resistance. Stainless steel itself has a certain hardness and good corrosion resistance. The surfaces of the spiral heat exchange tube 24 and the infusion tube 23 are not prone to scaling.

[0054] In an alternative embodiment, see Figure 7 The liquid inlet 13 and the liquid outlet 14 are connected to external equipment through flanges; the flange connection method enhances the sealing performance of the entire equipment.

[0055] Example 2

[0056] like Figure 5 and Figure 8-Figure 10 As shown, this embodiment provides a spiral heat exchanger, see Figure 8-Figure 10 , including a heat exchanger shell 1, a heat exchanger core assembly 2 and a water baffle assembly 3; the heat exchanger shell 1 is provided with an air inlet 11 and an air outlet 12 at both ends, and specifically, the heat exchanger shell 1 is provided with end covers at both ends, and the air inlet 11 and the air outlet 12 are respectively arranged on the end covers at both ends; the heat exchanger core assembly 2 is located in the heat exchanger shell 1, and the water baffle assembly 3 is located between the air outlet 12 and the heat exchanger core assembly 2; the heat exchanger core assembly 2 includes a spiral tube fixed side plate 21, a spiral tube fixing frame 22, a liquid infusion tube 23 and a plurality of spiral heat exchange tubes 24; the spiral tube fixed side plate 21 and the spiral tube fixing frame 22 are used to fix the spiral heat exchange tube 24, specifically, the spiral The spiral tube fixing side plate 21 is fixed to the inner walls on the front and rear sides of the heat exchanger shell 1 by bolts, and the spiral tube fixing frame 22 is arranged between the spiral heat exchange tubes 24 and on the uppermost and lowermost spiral heat exchange tubes 24. The two ends of the spiral tube fixing frame 22 are respectively welded to the spiral tube fixing side plates 21 on the front and rear sides; the infusion pipe 23 is used to transport the refrigerant, and one end of the heat exchanger shell 1 is provided with a liquid inlet 13 and a liquid outlet 14. The refrigerant flows in from the liquid inlet 13, passes through the infusion pipe 23 and the spiral heat exchange tube 24, and flows out from the liquid outlet 14; the spiral heat exchange tube 24 is a continuous circular heat exchange pipe; the water baffle assembly 3 is used to block the moisture carried in the cooling airflow and make the cooling airflow uniform.

[0057] For details, see Figure 5 The spiral heat exchange tube 24 is a continuous circular heat exchange pipe. Adjacent circular heat exchange pipes are tightly attached to each other. The two ends of the spiral heat exchange tube 24 are respectively provided with an inlet end and an outlet end. Figure 6When the spiral heat exchange tubes 24 are stacked in layers, two adjacent spiral heat exchange tubes 24 are tangent to each other; through the arrangement of the spiral heat exchange tubes 24, the outer wall of the spiral heat exchange tubes 24 has a certain curvature. When there is a small amount of dirt on the outer wall of the spiral heat exchange tubes 24, the dirt can slide down along the outer wall of the spiral heat exchange tubes 24 to prevent the dirt from being deposited on the outer wall of the spiral heat exchange tubes 24, thereby affecting the heat exchange efficiency of the spiral heat exchange tubes 24; compared with the serpentine or square heat exchange tubes in the prior art, it is not easy to cause dirt accumulation and affect the heat exchange efficiency of the heat exchanger; the layered stacking arrangement increases the heat transfer area while minimizing the volume of the heat exchanger. .

[0058] In this embodiment, the heat exchanger shell 1 is rectangular, and the air inlet 11 and the air outlet 12 are circular. However, this is only for the convenience of production and processing and the aesthetic appearance. The shapes of the heat exchanger shell 1, the air inlet 11 and the air outlet 12 are not limited.

[0059] Common refrigerants include R22, R407C, R132a, etc. In the present embodiment, taking R22 as an example, R22 flows in from the liquid inlet 13, passes through the liquid infusion tube 23 and the spiral heat exchange tube 24, and flows out from the liquid outlet 14, thereby realizing the refrigerant circulation.

[0060] In an optional embodiment, the water baffle assembly 3 includes a water baffle 31 and a water baffle frame 32; the water baffle frame 32 is arranged on the heat exchanger housing 1, and the water baffle 31 is arranged on the water baffle frame 32; for details, see Fig. 9 The water baffle plate 31 is closely arranged along the water baffle plate frame 32, so that the water-blocking effect of the water baffle plate 31 is better, and the cooled gas is discharged from the gap between the water baffle plates 31; through the setting of the water baffle plate assembly 3, it is used to block the moisture carried in the cooling airflow and make the cooling airflow uniform.

[0061] In an alternative embodiment, see Figure 8The liquid infusion pipe 23 includes a liquid inlet pipeline 231, a liquid spraying pipeline 232, a liquid inlet and liquid outlet head connecting pipe 233, a porous liquid outlet head 234 and a liquid outlet head connecting pipe 235 connected in sequence; and also includes a liquid outlet pipeline 236, which is arranged between the spiral heat exchange tube 24 and the liquid outlet 14; in the specific implementation process, the refrigerant reaches the porous liquid outlet head 234 along the liquid inlet pipeline 231, the liquid spraying pipeline 232, and the liquid inlet and liquid outlet head connecting pipe 233; and is sprayed out from the porous liquid outlet head 234 , and then enters the spiral heat exchange tube 24 through the liquid outlet head connecting pipe 235, and then reaches the liquid outlet pipeline 236 along the spiral heat exchange tube 24, and is discharged through the liquid outlet port 14; specifically, a plurality of circular holes are arranged on the porous liquid outlet head 234, and each circular hole is individually connected to a liquid outlet head connecting pipe 235, and then connected to the inlet end of the spiral heat exchange tube 24; similarly, the outlet end of the spiral heat exchange tube 24 is also through a separate branch pipe, and finally gathered to the main pipe, and discharged through the liquid outlet port 14.

[0062] Through the setting of the infusion pipe 23, the refrigerant enters from the liquid inlet 13, passes through the liquid inlet pipeline 231, the spray pipeline 232 and the liquid inlet head connecting pipe 233, enters the porous liquid separator 234 for spraying, and then passes through the liquid outlet head connecting pipe 235 to enter the spiral heat exchange tube 24, and finally flows out from the liquid outlet 14 through the liquid outlet pipeline 236.

[0063] In an optional embodiment, the spiral tube fixing frame 22 is T-shaped or L-shaped. The T-shaped frame can be inserted into the spiral tube gap to achieve three-way positioning; the L-shaped frame can only achieve two-way positioning. In the specific implementation process, several spiral tube fixing frames 22 can be set.

[0064] In an alternative embodiment, see Figure 8 , further comprising a flushing component 4, the flushing component 4 comprising a water inlet 41, a water outlet 42, a flushing pipeline 43 and a nozzle 44, the water inlet 41 and the water outlet 42 are respectively arranged at both ends of the heat exchanger shell 1, the flushing pipeline 43 is located between the water inlet 41 and the spiral heat exchange tube 24, the nozzle 44 is arranged on the flushing pipeline 43, and the nozzle 44 sprays toward the spiral heat exchange tube 24; specifically, the water inlet 41 is located on the upper side of the end cover, the water outlet 42 is located on the lower side of the end cover, the flushing pipeline 43 is a pipeline arranged along the longitudinal direction of the spiral heat exchanger, and the nozzle 44 is arranged On the flushing pipeline 43, it should be noted that the number of flushing pipelines 43 and nozzles 44 is determined according to the arrangement of the spiral heat exchange tube 24, so that the flushing water sprayed from the nozzle 44 can fully exchange heat with the spiral heat exchange tube 24; through the setting of the flushing component 4, the flushing water enters from the water inlet 41, passes through the flushing pipeline 43, and is sprayed from the nozzle 44 to the spiral heat exchange tube 24, and is carried by the cooling airflow to complete the heat exchange with the refrigerant in the spiral heat exchange tube 24, and then is discharged through the water outlet 42 to realize flushing heat exchange; at the same time, on the other hand, the dirt on the surface of the spiral heat exchange tube 24 can be washed away.

[0065] In an optional embodiment, the heat exchanger shell 1 is made of carbon steel or stainless steel; the carbon steel surface is hot-dip galvanized; the spiral heat exchange tube 24 and the infusion tube 23 are made of stainless steel

[0066] Carbon steel has the characteristics of high strength and good durability, and its surface is galvanized to enhance its corrosion resistance. Stainless steel itself has a certain hardness and good corrosion resistance. The surface of the spiral heat exchange tube 24 and the infusion tube 23 is not easy to scale.

[0067] In an alternative embodiment, see Figure 7 The liquid inlet 13 and the liquid outlet 14 are connected to external equipment through flanges; the flange connection method enhances the sealing performance of the entire equipment.

[0068] Working principle: When the spiral heat exchanger of this embodiment is in use, the refrigerant is first transported to the spiral heat exchange tube 24 through the infusion tube 23, and then flows back through the liquid outlet pipe 236 to realize the refrigerant circulation; then the hot air is transported from the air inlet 11 to the space between the spiral heat exchange tube 24 and the heat exchanger shell 1, so that the hot air exchanges heat with the spiral heat exchange tube 24, and the cold air after the heat exchange passes through the water baffle assembly 3 and is discharged from the air outlet 12; at the same time, flushing water enters from the water inlet 41, passes through the flushing pipe 43, and is sprayed from the nozzle 44 to the spiral heat exchange tube 24, completes the heat exchange with the refrigerant in the spiral heat exchange tube 24, and is then discharged through the water outlet 42 to realize flushing heat exchange; the flushing water can be used for flushing heat exchange on the one hand, and on the other hand, it can wash away the dirt on the surface of the spiral heat exchange tube 24.

[0069] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A spiral heat exchanger, characterized in that: The invention comprises a heat exchanger shell (1), a heat exchanger core assembly (2) and a water baffle assembly (3); the heat exchanger shell (1) is provided with an air inlet (11) and an air outlet (12) at both ends thereof; the heat exchanger core assembly (2) is located inside the heat exchanger shell (1); the water baffle assembly (3) is located between the air outlet (12) and the heat exchanger core assembly (2); the heat exchanger core assembly (2) comprises a spiral tube fixing side plate (21), a spiral tube fixing frame (22), a liquid infusion tube (23) and a plurality of spiral heat exchange tubes (24); the spiral tube fixing frame (22) is provided with ... The side plate (21) and the spiral tube fixing frame (22) are used to fix the spiral heat exchange tube (24); the liquid infusion tube (23) is used to transport the refrigerant; the air inlet (11) end of the heat exchanger shell (1) is provided with a liquid inlet (13) and a liquid outlet (14); the refrigerant flows in from the liquid inlet (13), passes through the liquid infusion tube (23) and the spiral heat exchange tube (24), and flows out from the liquid outlet (14); the spiral heat exchange tube (24) is a continuous circular heat exchange pipe; the water baffle assembly (3) is used to block the moisture carried in the cooling air flow and make the cooling air flow uniform.

2. The spiral heat exchanger according to claim 1, characterized in that: The water baffle assembly (3) comprises a water baffle (31) and a water baffle frame (32); the water baffle frame (32) is arranged on the heat exchanger housing (1), and the water baffle (31) is arranged on the water baffle frame (32).

3. The spiral heat exchanger according to claim 1, characterized in that: The liquid delivery pipe (23) comprises a liquid inlet pipeline (231), a liquid spraying pipeline (232), a liquid inlet and liquid outlet head connecting pipe (233), a porous liquid outlet head (234) and a liquid outlet head connecting pipe (235) which are connected in sequence; and further comprises a liquid outlet pipeline (236), wherein the liquid outlet pipeline (236) is arranged between the spiral heat exchange tube (24) and the liquid outlet (14).

4. The spiral heat exchanger according to claim 1, characterized in that: The spiral tube fixing frame (22) is T-shaped or L-shaped.

5. The spiral heat exchanger according to claim 1, characterized in that: The heat exchanger further comprises a flushing assembly (4), the flushing assembly (4) comprising a water inlet (41), a water outlet (42), a flushing pipeline (43) and a nozzle (44), the water inlet (41) and the water outlet (42) being respectively arranged at two ends of the heat exchanger shell (1), the flushing pipeline (43) being located between the water inlet (41) and the spiral heat exchange tube (24), the nozzle (44) being arranged on the flushing pipeline (43), and the nozzle (44) spraying towards the spiral heat exchange tube (24).

6. The spiral heat exchanger according to claim 1, characterized in that: The heat exchanger shell (1) is made of carbon steel or stainless steel; the surface of the carbon steel is hot-dip galvanized.

7. The spiral heat exchanger according to claim 1, characterized in that: The spiral heat exchange tube (24) and the liquid infusion tube (23) are made of stainless steel.

8. The spiral heat exchanger according to claim 1, characterized in that: The liquid inlet (13) and the liquid outlet (14) are connected to external equipment via flanges.

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