Condenser

Abstract

The embodiment of the utility model provides a condenser which comprises a shell, a first heat exchanger and a second heat exchanger, the shell is provided with a containing cavity, the containing cavity is divided into a first subspace and a second subspace which are communicated with each other, the shell is provided with a liquid inlet and a liquid outlet which are both communicated with the containing cavity, and the liquid inlet and the liquid outlet are formed in the two ends of the shell respectively; the heat exchange assembly comprises a heat exchange pipe set, an inlet pipe set and an outlet pipe set, the heat exchange pipe set is arranged in the containing cavity, the inlet pipe set and the outlet pipe set are both connected with the heat exchange pipe set, and the heat exchange pipe set comprises first heat exchange pipes located in the first subspace and second heat exchange pipes located in the second subspace. Structural functional layers are arranged on the outer surfaces of the first heat exchange tube and the second heat exchange tube; the structural functional layers comprise graphene; the first inlet pipe is communicated with the first heat exchange pipe, and the second inlet pipe is communicated with the second heat exchange pipe; the first outlet pipe is communicated with the first heat exchange pipe, and the second outlet pipe is communicated with the second heat exchange pipe. The performance and the service life of the condenser are improved.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of condensers, and in particular to a condenser. Background Art

[0002] The condenser is a component of the refrigeration system that can convert gas or steam into liquid and transfer the heat in the condenser tube to the air near the tube in a very fast way, so the condenser temperature is relatively high. However, in practical production, the condenser is easily corroded by various environmental factors, causing its performance to continuously decline until it is damaged, causing great economic losses directly or indirectly (such as shutdown for maintenance, etc.). In the past decade, although the anti-corrosion technology of condensers has made some progress, it has generally not kept up with the pace of research and development of condenser performance. Utility Model Content

[0003] The embodiment of the utility model provides a condenser, which is used to improve the performance and life of the condenser.

[0004] A condenser provided in an embodiment of the utility model comprises:

[0005] In a first aspect, an embodiment of the present invention provides a condenser, comprising:

[0006] A shell, wherein the shell has a containing cavity, the containing cavity is divided into a first subspace and a second subspace that are connected to each other, the first subspace and the second subspace are arranged along a length direction perpendicular to the shell; the shell has a liquid inlet and a liquid outlet that are both connected to the containing cavity, and along the length direction of the shell, the liquid inlet and the liquid outlet are respectively arranged at two ends of the shell;

[0007] A heat exchange assembly, the heat exchange assembly comprising a heat exchange tube group, an inlet tube group and an outlet tube group, the heat exchange tube group being arranged in the accommodating cavity, the inlet tube group and the outlet tube group being connected to the heat exchange tube group, and the inlet tube group and the outlet tube group being located at the same end of the shell; wherein the heat exchange tube group comprises a first heat exchange tube located in the first subspace and a second heat exchange tube located in the second subspace, the outer surfaces of the first heat exchange tube and the second heat exchange tube are both provided with a structural functional layer, the structural functional layer comprising graphene; the inlet tube group comprises a first inlet tube and a second inlet tube, the first inlet tube is connected to the first heat exchange tube, and the second inlet tube is connected to the second heat exchange tube; the outlet tube group comprises a first outlet tube and a second outlet tube, the first outlet tube is connected to the first heat exchange tube, and the second outlet tube is connected to the second heat exchange tube.

[0008] A condenser provided by an embodiment of the utility model comprises a shell and a heat exchange component, the shell has a accommodating cavity, the accommodating cavity is divided into two parts, namely a first subspace and a second subspace, the first subspace and the second subspace are arranged along the length direction of the shell vertically, a liquid outlet and a liquid inlet are arranged on the shell, and the liquid outlet and the liquid inlet are arranged along the length direction of the shell, since the distance between the liquid inlet and the liquid outlet is at both ends of the shell, the high-temperature liquid enters from the liquid inlet and flows out from the liquid outlet, ensuring a sufficiently long flow path, and then can flow through the first subspace and the second subspace, thereby increasing the heat exchange space of the high-temperature fluid, so that the cooling effect of the high-temperature fluid that needs to be cooled is improved, since the first subspace and the second subspace are connected, the path through which the high-temperature fluid flows includes at least the first subspace and the second subspace, and when there is a certain temperature difference between the first subspace and the second subspace When the heat exchange is poor, heat exchange can be carried out between the first subspace and the second subspace that are connected to each other to further improve the heat exchange efficiency; the heat exchange component includes a heat exchange tube group, an inlet tube group and an outlet tube group, the heat exchange tube group is located in the accommodating cavity of the shell, and the low-temperature fluid is introduced through the inlet tube group, and then the low-temperature fluid after heat exchange with the high-temperature fluid flows out through the outlet tube group, wherein the heat exchange component includes a first heat exchange tube and a second heat exchange tube, the inlet tube group includes a first inlet tube and a second inlet tube, the first inlet tube is connected to the first heat exchange tube, and the second inlet tube is connected to the second heat exchange tube; the outlet tube group includes a first outlet tube and a second outlet tube, the first outlet tube is connected to the first heat exchange tube, and the second outlet tube is connected to the second heat exchange tube, the first heat exchange tube is located in the first subspace, and the second heat exchange tube is located in the second subspace, and a structural functional layer is provided on the outer surfaces of the first heat exchange tube and the second heat exchange tube, and the structural functional layer includes graphene,

[0009] Taking full advantage of the excellent properties of graphene, such as high thermal conductivity, corrosion resistance, and high mechanical strength, a series of problems such as easy corrosion, easy scaling, and reduced condensation efficiency of the heat exchange tube group of the traditional condenser are solved. Since the mass of the graphene coating is smaller than the thermal conductivity layer of general metal products and the thermal conductivity of graphene is extremely good, it is the carbon material with the highest thermal conductivity so far. The thermal properties of graphene are used here to ensure that the condensation efficiency of the condenser will not decrease. It is only necessary to simply set a structural functional layer with graphene on the outer surface of the heat exchange tube group. The preparation process is simple, the structural functional layer is well combined with the heat exchange tube group, has good toughness, and can be bent. That is, the heat exchange tube group can be bent and deformed according to the accommodation space requirements of the shell, can withstand a certain degree of mechanical impact, has a stable effect, and has a long service life.

[0010] Optionally, the thickness of the structural functional layer is 1 μm-9 μm.

[0011] Optionally, the first subspace and the second subspace are of the same size, and the first subspace and the second subspace are arranged in a horizontal direction.

[0012] Optionally, the shell has two opposite surfaces along the length direction, and one of the two surfaces is provided with a plurality of openings, the first inlet pipe is connected to one of the plurality of openings, and the second inlet pipe is connected to one of the plurality of openings; the first outlet pipe is connected to one of the plurality of openings, and the second outlet pipe is connected to one of the plurality of openings; the opening connected to the first inlet pipe is higher than the opening connected to the first outlet pipe, and the opening connected to the second inlet pipe is higher than the opening connected to the second outlet pipe.

[0013] Optionally, the opening communicating with the first inlet pipe and the opening communicating with the first outlet pipe are arranged in a vertical direction, and the opening communicating with the second inlet pipe and the opening communicating with the second outlet pipe are arranged in a vertical direction.

[0014] Optionally, the opening communicating with the first inlet pipe and the opening communicating with the second inlet pipe are arranged in a horizontal direction.

[0015] Optionally, the opening communicating with the first inlet pipe and the opening communicating with the second inlet pipe are located at the same height; the opening communicating with the first outlet pipe and the opening communicating with the second outlet pipe are located at the same height.

[0016] Optionally, the first heat exchange tube and the second heat exchange tube are both in the shape of a U-shaped tube.

[0017] Optionally, the diameter of the first heat exchange tube is 6 mm-9 mm, and the length of the first heat exchange tube is 2.5 m-3.5 m.

[0018] Optionally, the diameter of the second heat exchange tube is 6 mm-9 mm, and the length of the second heat exchange tube is 2.5 m-3.5 m.

[0019] In a second aspect, an embodiment of the present invention provides a method for preparing a condenser.

[0020] The graphene coating and the diluent are mixed in a ratio of a:1 to form a mixed solution, where the value of a ranges from 9 to 11, and the mixed solution is matured;

[0021] Spraying the cured mixed liquid on the outer surface of the heat exchange tube group in the condenser at room temperature;

[0022] The heat exchange tube group after spraying is solidified so that the mixed liquid on the heat exchange tube group forms a structural functional layer.

[0023] Optionally, spraying the matured mixed liquid on the outer surface of the heat exchange tube group in the condenser at room temperature specifically includes: spraying the outer surface of the heat exchange tube group at room temperature using a spray gun with a caliber less than 1 mm.

[0024] Optionally, curing the heat exchange tube group after spraying includes at least one of the following methods:

[0025] Method 1: Dry the prefabricated parts at room temperature;

[0026] Method 2: Bake in the oven.

[0027] Optionally, after the graphene coating and the diluent are mixed in a ratio of a:1 to form a mixed solution, the mixed solution is sieve-filtered. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic diagram of a condenser provided in an embodiment of the utility model Figure 1 ;

[0030] Figure 2 A schematic diagram of a condenser provided in an embodiment of the utility model Figure 2 ;

[0031] Figure 3 A schematic diagram of a condenser provided in an embodiment of the utility model Figure 3 ;

[0032] Figure 4 A schematic diagram of a condenser provided in an embodiment of the utility model Figure 4 ;

[0033] Figure 5 A schematic diagram of the structure of the first heat exchange tube or the second heat exchange tube provided in an embodiment of the utility model.

[0034] Figure markings: 10-shell; 11-third temperature measuring port; 12-drain outlet; 13-base; 20-heat exchange component; 21-heat exchange tube group; 211-body; 212-structural functional layer; 22-inlet tube group; 221-first inlet tube; 222-second inlet tube; 23-outlet tube group; 231-first outlet tube; 232-second outlet tube; 30-liquid inlet tube; 31-first temperature measuring port; 40-liquid outlet tube; 41-exhaust port; 42-water flow switch; 43-second temperature measuring port. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] like Figure 1-Figure 4 As shown, in the first aspect, a condenser provided by an embodiment of the utility model comprises:

[0037] The shell 10 has a receiving cavity, which is divided into a first subspace and a second subspace connected to each other, and the first subspace and the second subspace are arranged along the length direction of the shell 10; the shell 10 has a liquid inlet and a liquid outlet both connected to the receiving cavity, and the liquid inlet and the liquid outlet are respectively arranged at both ends of the shell 10 along the length direction of the shell 10; wherein the liquid outlet is connected to the liquid outlet pipe 40, and the liquid outlet pipe 40 is provided with an exhaust port 41, a water flow switch 42 and a second temperature measuring port 43. Specifically, when the liquid flows out of the liquid outlet, When the high-temperature liquid is volatile, the gas is discharged by controlling the exhaust port 41 to effectively prevent the pressure in the liquid outlet pipe 40 from being too high. The water flow switch 42 on the liquid outlet pipe 40 is used to control the outflow speed of the high-temperature fluid on the liquid outlet pipe 40. Similarly, the second temperature measuring port 43 monitors in real time whether the temperature of the high-temperature fluid flowing out of the liquid outlet pipe 40 is satisfied. If the temperature is too high, the fluid flowing out of the liquid outlet pipe 40 will pass through the condenser again to cool down again to ensure the temperature of the cooled fluid flowing out of the liquid outlet pipe 40. Here, the liquid inlet is connected to the liquid inlet pipe 30, and specifically, the first temperature measuring port 31 is provided on the liquid inlet pipe 30, and the first temperature measuring port 31 detects the temperature of the high-temperature fluid entering the condenser shell 10 in real time. Of course, in order to ensure the overall cooling effect of a condenser provided by an embodiment of the utility model, the temperature of the temperature measuring ports at three different positions is obtained in real time through temperature detection between the first temperature measuring port 31, the second temperature measuring port 43 and the third temperature measuring port 11, so as to facilitate timely control of the flow rate or temperature of the high-temperature fluid entering the shell 10, and at the same time control the flow rate or temperature of the low-temperature fluid entering from the inlet pipe group 22, thereby greatly improving the overall heat exchange efficiency of a condenser provided by an embodiment of the utility model.

[0038] The heat exchange assembly 20 includes a heat exchange tube group 21, an inlet tube group 22 and an outlet tube group 23. The heat exchange tube group 21 is arranged in the accommodating cavity. The inlet tube group 22 and the outlet tube group 23 are both connected to the heat exchange tube group 21. The inlet tube group 22 and the outlet tube group 23 are located at the same end of the shell 10; wherein the heat exchange tube group 21 includes a first heat exchange tube located in the first subspace and a second heat exchange tube located in the second subspace. The outer surfaces of the first heat exchange tube and the second heat exchange tube are both provided with a structural functional layer 212. The structural functional layer 212 is provided with a structural functional layer 213. Layer 212 includes graphene, that is, the first heat exchange tube includes a main body 211 and a structural functional layer 212 arranged on the outer surface of the main body 211; the inlet tube group 22 includes a first inlet tube 221 and a second inlet tube 222, the first inlet tube 221 is connected to the first heat exchange tube, and the second inlet tube 222 is connected to the second heat exchange tube; the outlet tube group 23 includes a first outlet tube 231 and a second outlet tube 232, the first outlet tube 231 is connected to the first heat exchange tube, and the second outlet tube 232 is connected to the second heat exchange tube.

[0039] It should be noted that a condenser provided in an embodiment of the utility model includes a shell 10 and a heat exchange component 20. The shell 10 has a accommodating cavity, which is divided into two parts, namely a first subspace and a second subspace. The first subspace and the second subspace are arranged along the length direction of the shell 10. A liquid outlet and a liquid inlet are provided on the shell 10, and the liquid outlet and the liquid inlet are arranged along the length direction of the shell 10. Since the distance between the liquid inlet and the liquid outlet is at both ends of the shell 10, the high-temperature liquid enters from the liquid inlet and flows out from the liquid outlet to ensure a sufficiently long flow path, and then can flow through the first subspace and the second subspace, thereby increasing the heat exchange space of the high-temperature fluid, so that the cooling effect of the high-temperature fluid that needs to be cooled is improved. Since the first subspace and the second subspace are connected, the path through which the high-temperature fluid flows includes at least the first subspace and the second subspace, and when there is a certain temperature difference between the first subspace and the second subspace, heat exchange can be carried out between the first subspace and the second subspace that are connected to each other, so as to further improve the heat exchange efficiency; the heat exchange component 20 includes The heat exchange assembly 20 includes a heat exchange tube group 21, an inlet tube group 22 and an outlet tube group 23. The heat exchange tube group 21 is located in the accommodating cavity of the shell 10, and the low-temperature fluid is introduced through the inlet tube group 22, and then the low-temperature fluid after heat exchange with the high-temperature fluid flows out through the outlet tube group. The heat exchange assembly 20 includes a first heat exchange tube and a second heat exchange tube. The inlet tube group 22 includes a first inlet tube 221 and a second inlet tube 222. The first inlet tube 221 is connected to the first heat exchange tube, and the second inlet tube 222 is connected to the second heat exchange tube; the outlet tube group 23 includes a first outlet tube 23 1 and the second outlet pipe 232, the first outlet pipe 231 is connected to the first heat exchange pipe, the second outlet pipe 232 is connected to the second heat exchange pipe, the first heat exchange pipe is located in the first subspace, the second heat exchange pipe is located in the second subspace, and a structural functional layer 212 is provided on the outer surface of the first heat exchange pipe and the second heat exchange pipe, the structural functional layer 212 includes graphene, which makes full use of the excellent properties of graphene such as high thermal conductivity, corrosion resistance, and high mechanical strength, and solves a series of problems such as easy corrosion, easy scaling, and reduced condensation efficiency of the heat exchange pipe group 21 of the traditional condenser. Since the mass of the graphene coating is smaller than the thermal conductive layer of general metal products and the thermal conductivity of graphene is excellent, it is the carbon material with the highest thermal conductivity so far. The thermal properties of graphene are used here to ensure that the condensation efficiency of the condenser will not decrease. It is only necessary to simply set a structural functional layer 212 with graphene on the outer surface of the heat exchange tube group 21. The preparation process is simple, the structural functional layer 212 is well combined with the heat exchange tube group 21, has good toughness, and can be bent, that is, the heat exchange tube group 21 can be bent and deformed according to the accommodation space requirements of the shell 10, can withstand a certain degree of mechanical impact, has a stable effect, and has a long service life.

[0040] Continue to refer Figure 1In the length direction of the shell 10, a third temperature measuring port 11 is provided on the surface of one side of the shell 10 away from the inlet pipe group 22 and the outlet pipe group 23, which is used to detect the temperature of the high-temperature fluid in the internal accommodating chamber of the shell 10 in real time. At the same time, a drain port 12 is provided at the bottom of the shell 10. When the high-temperature fluid is passed into the accommodating chamber inside the shell 10, if the temperature of the high-temperature fluid drops, crystallization and other problems may occur. Therefore, a drain port 12 is provided at the bottom of the shell 10 to conveniently discharge impurities or crystals in the high-temperature fluid. In order to facilitate the installation of a condenser provided in an embodiment of the utility model, a base 13 is installed at the bottom of the condenser.

[0041] Of course, the heat exchange tube group 21 includes a first heat exchange tube and a second heat exchange tube, the number of the first heat exchange tube and the second heat exchange tube is an odd number, the shape of the first heat exchange tube and the second heat exchange tube are both U-shaped tubes, if the first heat exchange tube is one, then the first heat exchange tube is a U-shaped tube; if the first heat exchange tube is three, then the first heat exchange tube is arranged in an S shape; similarly, if the second heat exchange tube is one, then the second heat exchange tube is a U-shaped tube; if the second heat exchange tube is three, then the first heat exchange tube is arranged in an S shape. According to the heat exchange efficiency of a condenser provided in an embodiment of the utility model and the internal space of the accommodating cavity of the shell 10, the number of the first heat exchange tube and the second heat exchange tube is adjusted.

[0042] like Figure 5 As shown, the thickness of the structural functional layer 212 is 1 μm-9 μm. For example, the thickness of the structural functional layer 212 is 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm or 9 μm.

[0043] In some specific embodiments, the first subspace and the second subspace are of the same size, and the first subspace and the second subspace are arranged in the horizontal direction. A first heat exchange tube is placed in the first subspace, the first heat exchange tube is connected to the first inlet tube 221 and the first outlet tube 231, and the first heat exchange tube is filled with a low-temperature fluid. Of course, a second heat exchange tube is placed in the second subspace, the second heat exchange tube is connected to the second inlet tube 222 and the second outlet tube 232, and the first heat exchange tube is filled with a low-temperature fluid. That is, the first heat exchange tube, the first inlet tube 221 and the first outlet tube 231 are used to exchange heat with the first subspace alone; similarly, the second heat exchange tube, the second inlet tube 222 and the second outlet tube 232 are used to exchange heat with the second subspace alone. And if there is a certain temperature difference between the first subspace and the second subspace, the temperature can be adjusted by adjusting the cold fluid entering the first inlet tube 221 and the second inlet tube 222 in real time. At the same time, the first subspace and the second subspace are two connected spaces, that is, if there is a temperature difference between the first subspace and the second subspace, the temperature can be adjusted at any time, thereby effectively improving the heat exchange efficiency of the condenser.

[0044] Optionally, the diameter of the first heat exchange tube is 6mm-9mm, for example, the diameter of the first heat exchange tube is 6mm, 7mm, 8mm or 9mm; the length of the first heat exchange tube is 2.5m-3.5m, for example, the length of the first heat exchange tube is 2.5m, 3m or 3.5m. The diameter of the second heat exchange tube is 6mm-9mm, for example, the diameter of the second heat exchange tube is 6mm, 7mm, 8mm or 9mm; the length of the second heat exchange tube is 2.5m-3.5m, and the length of the second heat exchange tube is 2.5m, 3m or 3.5m. Of course, the length of the first heat exchange tube can be the same as the length of the second heat exchange tube, or different from the length of the second heat exchange tube; similarly, the diameter of the first heat exchange tube can be the same as the diameter of the second heat exchange tube, or different from the diameter of the second heat exchange tube.

[0045] Continue to refer Figure 1 , having two opposite surfaces along the length direction of the shell 10, one of the two surfaces is provided with a plurality of openings, the first inlet pipe 221 is communicated with one of the plurality of openings, and the second inlet pipe 222 is communicated with one of the plurality of openings; the first outlet pipe 231 is communicated with one of the plurality of openings, and the second outlet pipe 232 is communicated with one of the plurality of openings; the opening communicated with the first inlet pipe 221 is higher than the opening communicated with the first outlet pipe 231, and the opening communicated with the second inlet pipe 222 is higher than the opening communicated with the second outlet pipe 232.

[0046] It is understandable that if Figure 1 As shown, combined with Figure 5 , the first inlet pipe 221 is connected to the first heat exchange pipe, and the low-temperature fluid is introduced from the first inlet pipe 221 and then enters the first heat exchange pipe. During the process of the low-temperature fluid flowing through the first heat exchange pipe, heat exchange is performed with the high-temperature fluid outside the first heat exchange pipe. For example, the low-temperature fluid can be a low-temperature gas, that is, the low-temperature gas can be liquid nitrogen or liquid helium; of course, the low-temperature gas after flowing through the first heat exchange pipe will become liquid after absorbing heat. In order to facilitate the discharge of the liquid after absorbing heat, the height of the first outlet pipe 231 is lower than the height of the first inlet pipe 221. Similarly, the second inlet pipe 222 is connected to the second heat exchange pipe, and the low-temperature fluid is introduced from the second inlet pipe 222 and then enters the second heat exchange pipe. During the process of the low-temperature fluid flowing through the second heat exchange pipe, heat exchange is performed with the high-temperature fluid outside the second heat exchange pipe. For example, the low-temperature fluid can be a low-temperature gas, that is, the low-temperature gas can be liquid nitrogen or liquid helium; of course, the low-temperature gas after flowing through the second heat exchange pipe will become liquid after absorbing heat. In order to facilitate the discharge of the liquid after absorbing heat, the height of the second outlet pipe 232 is lower than the height of the second inlet pipe 222.

[0047] like Figure 2As shown, the openings communicating with the first inlet pipe 221 and the openings communicating with the first outlet pipe 231 are arranged in the vertical direction, and the openings communicating with the second inlet pipe 222 and the openings communicating with the second outlet pipe 232 are arranged in the vertical direction. The openings communicating with the first inlet pipe 221 and the openings communicating with the second inlet pipe 222 are arranged in the horizontal direction. The openings communicating with the first inlet pipe 221 and the openings communicating with the second inlet pipe 222 are located at the same height; the openings communicating with the first outlet pipe 231 and the openings communicating with the second outlet pipe 232 are located at the same height.

[0048] Here, the low-temperature fluid flows through the first inlet pipe 221, the first heat exchange pipe and the first outlet pipe 231 with a first resistance, and flows through the second inlet pipe 222, the second heat exchange pipe and the second outlet pipe 232 with a second resistance. The first outlet pipe 231 and the second outlet pipe 232 are designed to be at the same height, and the first inlet pipe 221 and the second inlet pipe 222 are designed to be at the same height, so that the first resistance and the second resistance can be guaranteed to be the same as much as possible, thereby ensuring that the low-temperature fluid in the condenser is smoother, reducing the resistance of the fluid flow, and further improving the heat exchange efficiency of the condenser. At the same time, this design is also conducive to reducing the manufacturing cost and maintenance cost of the condenser, and improving the service life and stability of the condenser.

[0049] In practical applications, the structure of the condenser can be further optimized and improved according to the specific needs and working environment of the condenser. For example, a thermal insulation layer can be provided on the outer surface of the shell 10 to reduce heat loss and improve the thermal efficiency of the condenser. In addition, a plurality of independent subspaces can be provided in the first subspace of the condenser, and an independent heat exchange tube group 21 can be provided in each subspace to better control the temperature of each subspace and further improve the heat exchange efficiency of the condenser. Similarly, a plurality of independent subspaces can be provided in the second subspace, and an independent heat exchange tube group 21 can be provided in each subspace to better control the temperature of each subspace and further improve the heat exchange efficiency of the condenser.

[0050] In summary, by providing the graphene-containing structural functional layer 212 and reasonably designing and adjusting the number, diameter, length and other parameters of the first heat exchange tube and the second heat exchange tube, the heat exchange efficiency and service life of the condenser can be effectively improved. At the same time, the condenser also has the advantages of simple structure, low manufacturing cost, and convenient maintenance, and has broad application prospects and market demand.

[0051] For ease of understanding, the working principle of a condenser provided in the embodiment of the utility model is described below in conjunction with the working process of the condenser. Figure 5 The following instructions are given:

[0052] The condensation process is divided into the following three stages: first, the low-temperature fluid is introduced into the heat exchange tube group 21 for convection heat exchange with the inner wall of the heat exchange tube group 21; then, the inner wall of the heat exchange tube group 21 and the single-layer cylindrical wall of the outer wall of the heat exchange tube group 21 exchange heat; finally, the outer wall of the heat exchange tube group 21 and the external high-temperature fluid in the housing 10 accommodating cavity exchange heat. Of course, in order to improve the heat exchange effect, the material of the heat exchange tube group 21 here can be selected as metal, such as copper.

[0053] By using the spraying process, after adding the graphene surface coating, the heat dissipation of the original single-layer heat exchange tube group 21 is changed to the heat exchange of the double-layer heat exchange tube group 21. At the same time, the medium for the convection heat exchange between the outer wall of the heat exchange tube group 21 and the high-temperature liquid in the housing cavity of the shell 10 is replaced by the structural functional layer 212 with graphene coating. The entire heat exchange process becomes: first, the low-temperature fluid in the heat exchange tube group 21 and the inner wall of the heat exchange tube group 21 are convectively exchanged; then, the inner wall of the heat exchange tube group 21 and the outer wall of the heat exchange tube group 21, as well as the outer wall of the heat exchange tube group 21 and the double-layer cylinder wall of the structural functional layer 212 are heat exchanged; finally, the outer wall of the heat exchange tube group 21 and the external high-temperature fluid are convectively exchanged.

[0054] In a second aspect, an embodiment of the present invention provides a method for preparing a condenser.

[0055] The graphene coating and the diluent are mixed in a ratio of a:1 to form a mixed solution, where the value of a is in the range of 9-11, and the mixed solution is matured;

[0056] Spraying the matured mixed liquid on the outer surface of the heat exchange tube group 21 in the condenser at room temperature;

[0057] The heat exchange tube group 21 after spraying is solidified so that the mixed liquid on the heat exchange tube group 21 forms a structural functional layer 212 .

[0058] For ease of understanding, a spraying process for a preparation method of a condenser provided in an embodiment of the utility model is specifically as follows: dilute the graphene coating and the diluent in a ratio of a:1, where a can be 9, 10 or 11, and stir the mixed liquid evenly, pass the mixed liquid through a 300-mesh sieve, clean the outer surface of the heat exchange tube group 21 with anhydrous ethanol and blow dry with compressed air.

[0059] Optionally, spraying the matured mixed liquid on the outer surface of the heat exchange tube group 21 in the condenser at room temperature specifically includes: using a spray gun with a diameter less than 1 mm to spray the outer surface of the heat exchange tube group 21 at room temperature, and the spraying thickness is 2μm-20μm; for example, the spraying thickness can be 2μm, 10μm, 15μm or 20μm.

[0060] Optionally, curing the sprayed heat exchange tube group 21 includes at least one of the following methods:

[0061] Method 1: Dry the prefabricated parts at room temperature; for example, dry them at room temperature for 30 minutes, or leave them at room temperature for more than 24 hours to cure naturally;

[0062] Method 2: baking in an oven, for example, baking at 150° C. for 30 minutes to quickly solidify the structure functional layer 212 .

[0063] Depending on the working conditions, the above coating treatment process can be repeated 2 times or more to achieve the most suitable stable effect under the actual working conditions.

[0064] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0065] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of this application and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A condenser, characterized in that: include: A shell, wherein the shell has a containing cavity, the containing cavity is divided into a first subspace and a second subspace that are connected to each other, the first subspace and the second subspace are arranged along a length direction perpendicular to the shell; the shell has a liquid inlet and a liquid outlet that are both connected to the containing cavity, and along the length direction of the shell, the liquid inlet and the liquid outlet are respectively arranged at two ends of the shell; A heat exchange assembly, the heat exchange assembly comprising a heat exchange tube group, an inlet tube group and an outlet tube group, the heat exchange tube group being arranged in the accommodating cavity, the inlet tube group and the outlet tube group being connected to the heat exchange tube group, and the inlet tube group and the outlet tube group being located at the same end of the shell; wherein the heat exchange tube group comprises a first heat exchange tube located in the first subspace and a second heat exchange tube located in the second subspace, the outer surfaces of the first heat exchange tube and the second heat exchange tube are both provided with a structural functional layer, the structural functional layer comprising graphene; the inlet tube group comprises a first inlet tube and a second inlet tube, the first inlet tube is connected to the first heat exchange tube, and the second inlet tube is connected to the second heat exchange tube; the outlet tube group comprises a first outlet tube and a second outlet tube, the first outlet tube is connected to the first heat exchange tube, and the second outlet tube is connected to the second heat exchange tube.

2. The condenser according to claim 1, characterized in that The thickness of the structural functional layer is 1 μm-9 μm.

3. The condenser according to claim 1, characterized in that The first subspace and the second subspace have the same size, and are arranged in a horizontal direction.

4. The condenser according to claim 1, characterized in that The shell has two opposite surfaces along the length direction, one of the two surfaces is provided with a plurality of openings, the first inlet pipe is communicated with one of the plurality of openings, and the second inlet pipe is communicated with one of the plurality of openings; The first outlet pipe is in communication with one of the plurality of openings, and the second outlet pipe is in communication with one of the plurality of openings; The opening communicating with the first inlet pipe is higher than the opening communicating with the first outlet pipe, and the opening communicating with the second inlet pipe is higher than the opening communicating with the second outlet pipe.

5. The condenser according to claim 1, characterized in that The opening communicating with the first inlet pipe and the opening communicating with the first outlet pipe are arranged in a vertical direction, and the opening communicating with the second inlet pipe and the opening communicating with the second outlet pipe are arranged in a vertical direction.

6. The condenser according to claim 1, characterized in that The opening communicating with the first inlet pipe and the opening communicating with the second inlet pipe are arranged in a horizontal direction.

7. The condenser according to claim 1, characterized in that The opening communicating with the first inlet pipe and the opening communicating with the second inlet pipe are located at the same height; the opening communicating with the first outlet pipe and the opening communicating with the second outlet pipe are located at the same height.

8. The condenser according to claim 1, characterized in that The first heat exchange tube and the second heat exchange tube are both in the shape of a U-shaped tube.

9. The condenser according to claim 1, characterized in that The diameter of the first heat exchange tube is 6 mm-9 mm, and the length of the first heat exchange tube is 2.5 m-3.5 m.

10. The condenser according to claim 1, characterized in that The diameter of the second heat exchange tube is 6 mm-9 mm, and the length of the second heat exchange tube is 2.5 m-3.5 m.

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