Condenser tube assembly, falling film condenser using the same, condensation method and refrigeration system

Abstract

The present invention relates to the field of condensers, specifically to a condenser tube group and a falling film condenser, a condensation method and a refrigeration system using the condenser tube group. The condenser tube group of the present invention comprises: a first condenser tube, the first condenser tube has at least three first pipeline bodies arranged in parallel, each of the first pipeline bodies has a first bending portion between another first pipeline body; each two adjacent first bending portions are respectively located at two different ends of the first pipeline body; the first condenser tube has an inlet end and an outlet end; a second condenser tube, the second condenser tube has at least three second pipeline bodies arranged in parallel, each of the second pipeline bodies has a second bending portion between another second pipeline body.

Description

Technical Field

[0001] The invention relates to the field of condensers, in particular to a condenser tube group and a falling film condenser, a condensation method and a refrigeration system using the condenser tube group. Background Art

[0002] In the refrigeration system, the evaporator, condenser, compressor and expansion valve are the four essential parts of the refrigeration system. Among them, the evaporator is a device for delivering cold. The refrigerant absorbs the heat of the cooled object to achieve refrigeration. The compressor is the heart, which plays the role of sucking, compressing and delivering refrigerant vapor. The condenser is a device that releases heat, and transfers the heat absorbed in the evaporator together with the heat converted by the compressor work to the cooling medium. The expansion valve throttles and reduces the pressure of the refrigerant, and at the same time controls and regulates the amount of refrigerant liquid flowing into the evaporator, and divides the system into two parts: the high-pressure side and the low-pressure side. In the actual refrigeration system, in addition to the above four major parts, there are often some auxiliary equipment, such as solenoid valves, distributors, dryers, collectors, fusible plugs, pressure controllers and other components, which are set to improve the economy, reliability and safety of operation.

[0003] The condenser is a component of the refrigeration system and a type of heat exchanger. It can convert gas or steam into liquid and transfer the heat in the condenser tube to the air near the condenser tube in a very fast way. The working process of the condenser is an exothermic process, so the condenser temperature is relatively high. There are many different types of condensation. The water-cooled condenser uses water as the cooling medium and relies on the temperature rise of the water to take away the condensation heat. The cooling water is generally circulated, but a cooling tower or cooling water pool is required in the system. The water-cooled condenser can be divided into two types according to its structural form: shell and tube condenser and sleeve condenser. The most common one is the shell and tube condenser. The air-cooled condenser uses air as the cooling medium and relies on the temperature rise of the air to take away the condensation heat. This type of condenser is suitable for occasions where there is an extreme lack of water or no water supply, and is commonly found in small Freon refrigeration units.

[0004] Among them, the evaporative condenser is the main heat exchange equipment in the refrigeration system. Its working principle is: the high-temperature and high-pressure refrigerant gas discharged from the compressor in the refrigeration system passes through the condensation pipe in the evaporative condenser, so that the high-temperature gaseous refrigerant exchanges heat with the spray water and air outside the pipe. That is, the gaseous refrigerant enters the pipe from the top and is gradually condensed into liquid refrigerant from top to bottom. The super strong wind force of the matching induced draft fan makes the spray water completely and evenly cover the surface of the coil. The water greatly improves the heat exchange effect by taking advantage of the wind. The spray water with increased temperature is partially converted into gaseous state, and a large amount of heat is taken away by the wind by the latent heat of vaporization of water. The water droplets in the hot air are intercepted by the high-efficiency dehydrator and scattered into the heat exchange layer of the PVC water spray sheet with the rest of the water that has absorbed heat. It is cooled by the air flowing through, the temperature is reduced, and it enters the water tank, and then continues to circulate through the circulating water pump. The water evaporated into the air is automatically replenished by the water level regulator.

[0005] After years of development, the condenser technology is relatively mature, but there are still at least the following deficiencies:

[0006] 1. In the existing evaporative condenser, the fan and water distribution pipe are at the top, the condenser is below the water distribution pipe, the filler is below the condenser, and the water tank is at the bottom of the filler. The water distribution pipe drains water downward, and the water flows downward. There is an air inlet on the side, which is lower than the filler and the condenser but higher than the water tank. When the fan is started, the wind is sucked in from the bottom to the top through the air inlet. The sucked wind first passes through the filler, which guides the wind, and the water flows downward on the filler. There is a water tank at the bottom for collecting the cooled water. In the process of the filler causing the water to flow downward, the contact area and time between the wind and the water are increased, so that the wind can take away more heat. In the whole process, the direction of the wind and the water is reversed, and the water will hinder the air intake, making the wind distribution uneven.

[0007] 2. Evaporative cooling relies on the contact of water on the surface of the condenser tube, so as to reduce the evaporation temperature of the refrigerant as low as possible. As for how low it is, it depends on the amount of water, the amount of air, and most importantly, the inlet air temperature. The lower the temperature of the incoming air, the lower the evaporation temperature. If the temperature of the wind when it contacts the condenser tube is high, then the evaporation temperature is high, and the condensation effect will be greatly reduced. The existing design has a big disadvantage, that is, after the wind enters, it will first pass through the packing when exchanging heat with the condenser, which can cool the water in the packing, but cooling the water is not the point, the point is to keep the condensation temperature low; but the wind passes through the packing first, and the temperature of the wind has risen at this time, causing the temperature of the wind after passing through the packing to be not as low as before when it contacts the condenser tube, which is not good for condensation, because the essential purpose is to cool the condenser tube to achieve maximum efficiency and phase change, rather than just lowering the temperature of the water. Therefore, the filler has few positive advantages and a greater negative impact. However, since the filler is one of the necessary accessories, it cannot be deleted. If the filler is removed, the wind guidance and uniformity will not be so good. Based on this, the technical personnel in the industry have not paid attention to this aspect, and it is also the consensus of the industry that the wind goes from below, which has formed a common prejudice in the industry, and people do not think that this aspect has an impact, so everyone in the industry has ignored this issue.

[0008] 3. At present, the pipes on the condenser are all placed horizontally. Because in the condenser, the refrigerant entering the condenser is gaseous, and the refrigerant after condensation is liquid. In the horizontally arranged pipes, the liquid refrigerant will not actively flow forward in the pipes, and there will be a large amount of liquid refrigerant remaining in each pipe; the liquid refrigerant in the pipe is completely pushed forward by the pressure in the pipe, and even when the compressor pushes the fluid forward, there will be a large amount of liquid refrigerant remaining in the pipe, occupying a large amount of space in the condenser tube; most of the refrigerant flowing forward in the current condenser is gaseous, and a lot of liquid refrigerant remains in the pipe. Usually, the liquid refrigerant in the condenser tube will flow forward only when it exceeds a certain amount.

[0009] 4. With the existing condenser, there is still a considerable amount of liquid refrigerant in the condenser tube that has not flowed into the end close to the evaporator until the entire refrigeration unit is shut down, which on the one hand causes waste and affects efficiency; on the other hand, when the refrigeration unit is just started, the refrigerant sucked into the evaporator is sometimes mixed with gaseous refrigerant, while the liquid refrigerant remains in the condenser tube.

[0010] 5. There is a certain amount of liquid refrigerant remaining in each section of the condenser tube. However, there are a lot of condenser tubes in a condenser. When these large number of condenser tubes are added together, the amount of liquid refrigerant remaining in the tube is quite large.

[0011] 6. In the prior art, there are also vertically arranged condenser tubes, which has even greater disadvantages, because the vertically arranged condenser tubes are high and low, which is more unfavorable for the flow of refrigerant, and the amount of liquid refrigerant remaining in the condenser tubes is greater; the liquid refrigerant will be deposited at the bottom of each pipeline, and in this case there is liquid refrigerant at the bottom. The present invention is tilted, and there will be no liquid refrigerant in the tube.

[0012] 7. Regardless of the design of the condenser, the liquid refrigerant remaining in the condenser will not flow to the evaporator. In the use of the refrigeration unit, the main function of the condenser is to remove heat and realize the phase change of gaseous refrigerant into liquid. In the process of heat exchange, the gaseous refrigerant is in a process of constantly changing into liquid. In this process, the liquid refrigerant in the condenser increases. At this time, if the liquid refrigerant can be removed in time, a larger area will be reserved for the condenser for heat exchange with the new gaseous refrigerant, so that more gaseous refrigerant can be converted into liquid. , thereby achieving higher efficiency; however, there is liquid refrigerant that has not been discharged in the condenser tube, and this liquid refrigerant will reduce the area of ​​the condenser tube for heat exchange; especially where the pipeline has high and low inclination angles or slight bends, more liquid refrigerant is deposited in the concave position, and the heat exchange area is reduced even more. When the machine is turned on, the power of the machine is higher, but the efficiency is not improved by the same amount, and the cooling capacity of the refrigeration unit is not proportional to the power; these situations are problems that have not been discovered in the existing industry, but this problem has a great impact on the condensation efficiency.

[0013] 8. The applicant is Guangdong Anjia Air Conditioning and Refrigeration Co., Ltd., the applicant's own existing patent, China Patent Authorization Announcement No.: CN115615054B, the patent name is: A curtain-falling condenser, including the prior art, because the end of the condenser tube is narrowed, it also further causes at least a part of the liquid refrigerant in each condenser tube to be stored inside and cannot be discharged. However, if the end of the condenser tube is not narrowed, it is not conducive to achieving good sealing when welding the main tube.

[0014] 9. In the existing condenser, the downward flowing water film increases the contact between water and the condenser tube, but it also forms water walls, blocking the flow range of wind, so that part of the wind cannot blow to the condenser tube near the inside; however, if the wind is turned on a little higher, it can pass through the water film, but it will blow away the water on the surface of the condenser tube, so this is a big contradiction at present.

[0015] 10. At present, liquid refrigerant will remain in the condenser tube, and the liquid refrigerant will occupy the space of the condenser tube, reducing the area of ​​the condenser tube for heat exchange, resulting in a waste of power of the compressor and condenser, and reducing the condensation amount. It is necessary to increase the amount of cold water and lower the cold water temperature to achieve efficient condensation.

[0016] 11. In the existing condenser pipe, water mainly covers the surface of the condenser pipe body, and the condenser pipe at the bend cannot be covered by water, so that the water flow of the entire condenser pipe is interrupted at the bend. Summary of the invention

[0017] The purpose of the present invention is to solve at least part of the existing problems mentioned in the above background technology and bring about corresponding technical effects.

[0018] In order to solve the above technical problems, the condenser tube group of the present invention comprises:

[0019] A first condenser, the first condenser having at least three first pipeline bodies arranged in parallel, each of the first pipeline bodies having a first bending portion between the first pipeline bodies and another first pipeline body; each two adjacent first bending portions are respectively located at two different ends of the first pipeline body; the first condenser has an inlet end and an outlet end, the horizontal position of the inlet end is higher than the horizontal position of the outlet end; the horizontal heights of at least three first pipeline bodies are respectively at positions that gradually decrease in a step-like manner; each of the first bending portions is respectively at the same inclination angle; at least three first pipeline bodies and the first bending portion, the inlet end and the outlet end are respectively on the same oblique line;

[0020] A second condenser, the second condenser having at least three second pipe bodies arranged in parallel, each of the second pipe bodies having a second bending portion between the second pipe bodies; each two adjacent second bending portions are respectively located at two different ends of the second pipe body; the second condenser has an inlet end and an outlet end, the horizontal position of the inlet end is higher than the horizontal position of the outlet end; the horizontal heights of at least three second pipe bodies are respectively at positions that gradually decrease in a step-like manner; each of the second bending portions is respectively at the same inclination angle; at least three second pipe bodies and the second bending portion, the inlet end and the outlet end are respectively on the same oblique line;

[0021] The first condenser tube and the second condenser tube are in a vertically stacked state; the first pipe body of the first condenser tube and the second pipe body of the second condenser tube are in the same vertical line; the first bending portion of the first condenser tube and the second bending portion of the second condenser tube are in a vertical non-overlapping position.

[0022] As a preferred embodiment of the condenser tube group of the present invention, it comprises at least three first condenser tubes and at least three second condenser tubes, and the first condenser tubes and the second condenser tubes are distributed at intervals.

[0023] As a preferred embodiment of the condenser tube group of the present invention, the inlet end of the first condenser tube and the inlet end of the second condenser tube are in opposite directions; the outlet end of the first condenser tube and the outlet end of the second condenser tube are in opposite directions.

[0024] As a preferred embodiment of the condenser tube assembly of the present invention, it comprises:

[0025] A first gaseous condenser tube, the first gaseous condenser tube being connected to the liquid inlet ends of all the first condensers at the same time;

[0026] A second gaseous condenser tube, the second gaseous condenser tube being connected to the liquid inlet ends of all the second condenser tubes at the same time;

[0027] A first liquid condenser tube, the first liquid condenser tube being connected to the liquid outlet ends of all the first condensers at the same time;

[0028] The second liquid condenser is connected to the outflow ends of all the second condensers at the same time.

[0029] The falling film condenser of the present invention comprises: any one of the above condenser tube groups;

[0030] A condenser main box, the condenser main box having an exhaust passage in the middle and condensation chambers on both sides of the exhaust passage; a fan is provided vertically above the condenser main box, the fan is connected to the exhaust passage; a water pool is provided below the condenser main box;

[0031] The condensation chamber is connected to the exhaust passage through the top of the water pool;

[0032] Each of the condensing bins has an air inlet on its upper side;

[0033] The condensation tube group is installed in each of the condensation bins respectively, and the condensation tube group covers the entire cross section of the condensation bin; the condensation tube group is located at the top of the condensation bin as a whole.

[0034] As a preferred embodiment of the falling film condenser of the present invention, a filler is installed in each of the condensing bins, and the filler is located vertically below the condensing tube group.

[0035] As a preferred embodiment of the falling film condenser of the present invention, each of the condensing chambers has a buffer space above, and the buffer space is at a horizontal height with the air inlet.

[0036] As a preferred embodiment of the falling film condenser of the present invention, it comprises a main water pipe, which is at an inclined angle, and the main water pipe is connected to at least three water distribution pipes, and at least three of the water distribution pipes are distributed in a stepped manner and are at the same inclined line; each of the water distribution pipes has an outlet below;

[0037] A water distribution pipe is arranged in parallel above each first pipe body at the top of the condensing pipe group, and the outlet of the water distribution pipe is adjacent to the vertical upper surface of the first pipe body.

[0038] The falling film condenser of the present invention, minus the filler, is composed of any of the above-mentioned condenser tube groups and a condenser main box;

[0039] The main box of the condenser is composed of: an exhaust passage in the middle, and condensation chambers on both sides of the exhaust passage; a fan is provided vertically above the condenser, and the fan is connected to the exhaust passage; a water pool is provided below the condenser; the condensation chamber is connected to the condensation chamber and the exhaust passage through the top of the water pool;

[0040] Each of the condensing bins has an air inlet on its upper side;

[0041] The condensation pipe group is installed in each of the condensation bins respectively; the condensation pipe group is located at the top of the condensation bin as a whole.

[0042] The condensation method of the present invention adopts any of the above condensation tube sets or any of the above falling film condensers;

[0043] Obtaining a gaseous refrigerant, wherein the gaseous refrigerant flows obliquely downward along the first condensing tube and the second condensing tube of the condensing tube group;

[0044] Condensed water is obtained and distributed vertically downward; the condensed water forms a vertical water film with at least each row of the first pipe body and the second pipe body in the condenser tube group, so that the condensed water exchanges heat with the first condenser tube and the second condenser tube in the condenser tube group and the gaseous refrigerant completes a phase change; the water film forms an oblique angle with the flow direction of the gaseous refrigerant and flows downward respectively;

[0045] Obtaining cold air, which flows vertically downward from the gap between each two drainage membranes, exchanges heat with the condenser tube and condensed water, takes away heat, and changes the phase of the gaseous refrigerant;

[0046] By utilizing the first condenser tube and the second condenser tube at an inclined angle in the condenser tube group, the gaseous refrigerant is transformed into liquid refrigerant and flows downward quickly and promptly; space is vacated in the first condenser tube and the second condenser tube in time to retain a larger heat exchange area, so that more gaseous refrigerant completes phase change, thereby improving efficiency.

[0047] As a preferred embodiment of the condensation method of the present invention, a wider air inlet is achieved by using a condensation tube group at an inclined angle;

[0048] Utilize buffer space to achieve more even distribution of cold air.

[0049] The refrigeration system of the present invention comprises any one of the falling film condensers described above, wherein the first liquid condenser tube and the second liquid condenser tube in the falling film condenser are connected to an expansion valve, the expansion valve is connected to an evaporator, the evaporator is connected to a compressor, and the compressor is connected to the first gaseous condenser tube and the second gaseous condenser tube of the condenser.

[0050] Beneficial Effects

[0051] The present invention solves the above existing problems and other existing problems not mentioned above and accordingly brings at least the following innovative advantages:

[0052] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group, since the first condenser tube and the second condenser tube of the condenser tube group are respectively at an inclined angle, the entire condenser tube group is at an inclined angle, so that during the application process, the air inlet surface is increased, thereby solving the contradiction between the size of the air inlet and the volume of the condenser in the prior art.

[0053] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group are configured to change the position of the air inlet to set the position of the air inlet on the side of the condenser main box, and the key point is that the position is above the condensation bin, and the present invention changes the air inlet direction to enter the air from above, so that the flow directions of the air inlet and the water distribution are the same, so that the water on the surface of the condenser tube will not be blown away and the condenser tube will not be exposed;

[0054] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group, because the air inlet is arranged on the side, can solve the problems of large air intake volume and volume, and also play a role of being away from the fan, so that it is not easy to suck the hot air from the fan, thereby solving the problem that the current technical solution easily sucks back the hot air from the fan.

[0055] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group realize upper air intake because the position of the air inlet is higher than the condenser tube group; and there is also a buffer space in the condensation bin, so that the wind can pass evenly between the water films of the condenser tube group, thereby solving the problems in the prior art that the side air intake will blow away the water on the surface of the condenser tube, and the existing condenser tube will block the air intake.

[0056] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group have the same air inlet direction and water flow direction, and the wind passes through the water films. While taking away heat, the water on the surface of the condenser tube will not be blown away, thereby solving the problem in the prior art that if any part of the surface of the condenser tube is not covered with water, then a whole larger area below the position will not be covered with water, seriously affecting the condensation effect.

[0057] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group have the same air inlet direction and water flow direction, and the wind passes through the water films, so the water on the surface of the condenser tube will not be blown away. On the one hand, it is beneficial to take away heat, and on the other hand, the wind is more evenly distributed, which solves the problems that water will hinder the air inlet, the wind will also blow away the water on the surface of the condenser tube, and the water will cause uneven wind distribution; it also solves the problem in the prior art that the wind first contacts the filler and then heats up.

[0058] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group, the incoming wind first contacts the first condenser tube and the second condenser tube, which more effectively improves the efficiency. The condenser tube group of the present invention is at an inclined angle, and the first pipeline body and the second pipeline body are arranged vertically, and the flow directions of water and wind are the same. Therefore, on the one hand, the problem of temperature increase caused by fillers is solved. On the other hand, the present invention does not need fillers and can delete fillers, which changes the traditional prejudice in the industry. In the absence of fillers, the wind guidance is still very good, and the cost is low, while the efficiency can be improved.

[0059] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group, the first condenser tube and the second condenser tube in the condenser tube group of the present invention are at an inclined angle, and the first condenser tube and the second condenser tube form a vertical row under the inclined angle, and the liquid refrigerant in the first condenser tube and the second condenser tube can quickly flow into the first liquid condenser tube and the second liquid condensing refrigerant tube, leaving a larger contact area for the first condenser tube and the second condenser tube to perform heat exchange in real time, so that the phase change of the refrigerant is more efficient and more sufficient. And even if the power of the refrigeration unit is turned on a little bit, due to the improvement of the heat exchange capacity, the refrigeration capacity of the evaporator will not be affected, thereby saving the condensation cost and greatly improving the efficiency. Because the heat exchange area is large, the phase change conversion rate of the refrigerant is higher, and the efficiency of the original high power can be achieved when the power of the refrigeration unit is small.

[0060] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group are at an inclined angle, so the liquid refrigerant in all the first condenser tubes and the second condenser tubes can flow forward better, thus solving the current problems of space occupied by liquid refrigerant in the condenser tubes and low heat exchange efficiency, and at the same time providing a large amount of refrigerant for the evaporator, bringing about the effect of one plus one being greater than two.

[0061] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group can make the liquid refrigerant in the first condenser tube and the second condenser tube flow forward slowly without the push of the compressor even after the refrigeration unit is shut down, so that the refrigerant in the first condenser tube and the second condenser tube is gaseous; and this is also convenient for the next startup, when more liquid refrigerant is supplied to the evaporator at the moment of startup. The problem that a large amount of liquid refrigerant remains in the condenser tube until the system is shut down, but part of the gaseous refrigerant is sucked into the evaporator is solved.

[0062] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group, since the first condenser tube and the second condenser tube are always in an inclined state, and the position of the inlet end is higher than the outlet end, it is not easy for liquid refrigerant to remain in the condenser tube whether the refrigeration unit is in operation or in a shutdown state, and it also solves the serious problem of liquid refrigerant residue caused by the current vertical arrangement of condenser tubes.

[0063] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group, because the first condenser tube and the second condenser tube are always in an inclined state, the liquid refrigerant can be discharged in real time, and even if the condenser tube is bent, it is not easy for the liquid refrigerant to accumulate; compared with the prior art, the heat exchange area is increased and the efficiency is high; it solves the current problem that the liquid refrigerant is deposited more due to the high and low inclination angles or slight bends of the condenser tube, which greatly reduces the area of ​​heat exchange and causes the refrigeration capacity of the refrigeration unit to be not proportional to the power. Compared with the prior art, the present invention greatly improves the heat transfer efficiency when the volume is the same and the power is turned on.

[0064] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group, because the first condenser tube and the second condenser tube are always in an inclined state, so that the liquid refrigerant can flow smoothly, which solves the problem that the ends of the condenser tubes are currently narrowed, further causing at least a part of the liquid refrigerant in each condenser tube to be stored inside and unable to come out.

[0065] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group, since the first condenser tube and the second condenser tube are arranged at intervals; the inlet end of the first condenser tube and the inlet end of the second condenser tube are in opposite directions; the outlet end of the first condenser tube and the outlet end of the second condenser tube are in opposite directions; therefore, the present invention solves the problem that when the number of arranged condenser tubes is too large, the ends of the condenser tubes can achieve good sealing without being narrowed.

[0066] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group, by installing the condenser tube group above the condensation bin and combining the design of the air inlet and the buffer space, can allow air to enter from the top, the wind first contacts the condenser tube, and the incoming air flows along the gaps in the water film, thereby solving the problem of not blowing away the water on the surface of the condenser tube to expose the condenser tube, and solving the problem of the water film in the prior art blocking the air intake, thus overcoming the existing contradictory problems.

[0067] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group can discharge the liquid refrigerant in time, thereby solving the current problem that the liquid refrigerant occupies the space of the condenser tube, reduces the area of ​​the condenser tube for heat exchange, wastes the power of the compressor and condenser, and reduces the condensation amount. It also solves the current problem that the amount of cold water needs to be increased and the temperature of the cold water needs to be lowered to achieve condensation.

[0068] Furthermore, when the condensed water is drained on the first pipe body, since the first condenser tube and the second condenser tube are respectively inclined at an angle, the water can also at least partially flow to the first bend, thereby increasing the heat exchange area and solving the problem that heat exchange cannot be performed at the current bend. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] Figure 1 is a three-dimensional diagram of the condenser tube assembly of the present invention;

[0070] Figure 2 is a front view of the condenser tube assembly of the present invention;

[0071] Figure 3 is a side view of the condenser tube assembly of the present invention;

[0072] Figure 4 is a top view of the condenser tube assembly of the present invention;

[0073] Figure 5 It is a top view of the condenser tube assembly of the present invention connecting the gas condenser tube and the liquid condenser tube;

[0074] Figure 6 This is a rendering of the installation of water distribution pipes on the condenser tube assembly of the present invention;

[0075] Figure 7 The present invention Figure 6 A partial enlarged view of the middle A area;

[0076] Figure 8 1. It is the effect diagram of different inclination angles of the condenser tube group of the present invention;

[0077] Fig. 9 is a three-dimensional enlarged view of the first condenser of the present invention;

[0078] Fig.10It is the effect diagram of the falling film condenser of the present invention;

[0079] Fig.11 yes Fig.10 A partial enlarged view of the middle B area;

[0080] Fig.12 This is another variation effect diagram of the falling film condenser of the present invention.

[0081] In the figure: 1. first condenser, 2. first pipeline body, 3. first bending part, 4. inlet end, 5. outlet end, 6. second condenser, 7. second pipeline body, 8. second bending part, 9. first gaseous condenser, 10. second gaseous condenser, 11. first liquid condenser, 12. second liquid condenser, 13. condenser main box, 14. exhaust channel, 15. condensation chamber, 16. fan, 17. water tank, 18. packing, 19. buffer space, 20. main water pipe, 21. water distribution pipe, 22. outlet, 23. air inlet. DETAILED DESCRIPTION

[0082] In order to make the purpose, technical solution and advantages of the technical solution of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present disclosure.

[0083] The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only part of the embodiments of the present disclosure, but not all of the embodiments.

[0084] Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present disclosure.

[0085] In the existing technology, there are still more problems in implementation, including at least:

[0086] First, the heat dissipation of the condenser is proportional to the air intake volume and air intake temperature. If the air inlet is small, the air intake volume will decrease and the wind speed will become faster. The fast wind speed will further blow away the water on the surface of the condenser tube, leaving the surface of the condenser tube without water and exposed, seriously affecting the condensation efficiency. At the same time, when the wind speed is too fast, the blowing is more uneven. However, if the air inlet is set too large in the prior art, it will either cause the volume of the whole machine to increase. The solution is either to reduce the number of condenser tubes or to increase the height of the condenser. It is impossible to achieve a large air inlet when the volume of the condenser remains unchanged. Therefore, in the prior art, the size of the air inlet and the volume of the condenser are a contradictory problem, and it is impossible to set a large air inlet when the volume is small.

[0087] Secondly, in the existing condenser, the flow of wind and water is in opposite directions. On the basis of the existing technology, even if the air inlet position is changed, the air is inletted from the top or the left and right sides so that the cold air contacts the condenser tube first, this will make the condenser larger in size, inconvenient to transport, and the width of the air inlet is small, and the flow of wind in the condenser is more uneven, which makes it impossible for water to exist on the surface of the condenser tube and increases the exposed area.

[0088] Third, further, in the case of adopting the existing technology, even if the air inlet position is changed, and the air is inletted from the top or the left and right sides, in actual use, the air inlet will absorb the hot air discharged by the fan and circulate the hot air, causing hot air to be blown, greatly reducing the condensation efficiency, and even making it impossible for the refrigerant to complete the phase change from gas to liquid;

[0089] Fourthly, in the case of adopting the existing technology, in order to increase the air inlet, the air inlet can also be set on the side, so that a large air inlet can be achieved. However, if the existing technology is changed to side air inlet, the wind will also blow away the water on the surface of the condenser tube, so that a large area of ​​the condenser tube surface is exposed and not covered with water, and the condenser tube will also block the air inlet, and the condensation effect will be greatly reduced;

[0090] Fifth, once there is no water covering the surface of any part of the condenser, a whole larger area below that position will not be covered by water, seriously affecting the condensation effect.

[0091] The following are specific embodiments of the present invention.

[0092] Example 1

[0093] The condenser tube assembly of the present invention, see Figures 1 to 5 ,include:

[0094] The first condenser 1 has at least three first pipeline bodies 2 arranged in parallel. Figure 1 It is shown that there are multiple first condensing pipes 1; each of the first pipe bodies 2 has a first bending portion 3 between another first pipe body 2; see Figure 4 , each two adjacent first bending parts 3 are respectively located at two different ends of the first pipeline body 2, and the first bending parts 3 at the two ends are not in the same straight line; the first condenser tube 1 has an inlet end 4 and an outlet end 5, and the horizontal position of the inlet end 4 is higher than the horizontal position of the outlet end 5; see Figure 2 , the levels of at least three of the first pipeline bodies 2 are respectively at positions that gradually decrease in a step-like manner; Figure 2As shown, each of the first bending portions 3 is at the same inclination angle; at least three of the first pipeline bodies 2 and the first bending portion 3, the inlet end 4 and the outlet end 5 are on the same oblique line;

[0095] The second condenser 6 has at least three second pipeline bodies 7 arranged in parallel. Figure 1 It is shown that there are also multiple second condensing pipes 6, and each second pipe body 7 has a second bending portion 8 between another second pipe body 7; see Figure 4 , each two adjacent second bent portions 8 are respectively located at two different ends of the second pipe body 7, and the second bent portions 8 at the two ends are not in the same straight line; the second condenser tube 6 has an inlet end 4 and an outlet end 5, and the horizontal position of the inlet end 4 is higher than the horizontal position of the outlet end 5; see Figure 2 , the levels of at least three of the second pipeline bodies 7 are respectively at positions that gradually decrease in a step-like manner; and Figure 2 As shown, each of the second bending portions 8 is at the same inclination angle; at least three of the second pipeline bodies 7 and the second bending portions 8, the inlet end 4 and the outlet end 5 are on the same oblique line;

[0096] See also Figures 1 to 5 , Figure 1 , Figure 2 and Figure 4 The first condenser tube 1 and the second condenser tube 6 are respectively shown in a vertically stacked state, forming a plurality of rows of mutually parallel and vertically stacked effects; Figure 1 , Figure 2 and Figure 4 As shown, the first pipe body 2 of the first condenser tube 1 and the second pipe body 7 of the second condenser tube 6 are in the same vertical line; Figure 1 , Figure 4 and Figure 5 It is shown that the first bending portion 3 of the first condenser tube 1 and the second bending portion 8 of the second condenser tube 6 are in a vertical non-overlapping position.

[0097] Furthermore, Figure 6 and Figure 8 It is shown that the multiple first condenser tubes 1 and the second condenser tubes 6 can have different inclination angles, but no matter what the angles are, the first condenser tubes 1 and the second condenser tubes 6 are respectively in a vertically stacked state, especially the first pipeline body 2 and the second pipeline body 7 are in the same vertical line.

[0098] For further information, see Figure 3 , both ends of each of the first pipe bodies 2 in the first condenser tubes 1 are at the same level; Figure 1 , Figure 2and Figure 3 As shown, the first bending portions 3 connecting the two ends of each first pipeline body 2 are at different heights, see Figure 1 , Figure 2 and Figure 3 , at both ends of each first pipeline body 2, the lowest point of the first bending portion 3 connected to one end and the highest point of the first bending portion 3 connected to the other end are at the same level;

[0099] See also Figure 3 , both ends of each of the second pipe bodies 7 in the second condenser pipe 6 are at the same level; Figure 1 , Figure 2 and Figure 3 As shown, the second bending portions 8 connecting the two ends of each second pipeline body 7 are at different heights, see Figure 1 , Figure 2 and Figure 3 Among the two ends of each second pipeline main body 7, the lowest point of the second bending portion 8 connected to one end and the highest point of the first bending portion 3 connected to the other end are at the same level.

[0100] For further information, see Figure 1 , Figure 3 , Figure 4 and Figure 5 , including at least three of the first condensation tubes 1 and at least three of the second condensation tubes 6, such as Figure 1 and Figure 2 As shown, there are multiple first condensation tubes 1 and second condensation tubes 6. Figure 1 , Figure 3 and Figure 4 It is shown that the first condenser tube 1 and the second condenser tube 6 are distributed at intervals.

[0101] Further, the inlet end 4 of the first condenser tube 1 and the inlet end 4 of the second condenser tube 6 are in opposite directions; the outlet end 5 of the first condenser tube 1 and the outlet end 5 of the second condenser tube 6 are in opposite directions. Figure 4 , Figure 4 FIG. 1 is a top view of the condenser tube group of the present invention, in which the topmost one is the first condenser tube 1, and a plurality of first condenser tubes 1 and second condenser tubes 6 are spaced and stacked below the first condenser tube 1; Figure 4 As shown, the lower right corner of the figure is the inlet end 4 of the first condenser tube 1, and the upper left corner of the figure is the outlet end 5 of the first condenser tube 1; Figure 3 As shown, due to Figure 4 The second condenser tube 6 is located vertically below the first condenser tube 1, so Figure 4 The second condenser tube 6 is visible only at the position that does not overlap with the first condenser tube 1; Figure 4The upper right corner is the inlet end 4 of the second condenser tube 6 , and the lower left corner in the figure is the outlet end 5 of the second condenser tube 6 .

[0102] For further information, see Figure 5 , comprising: a first gaseous condensation tube 9, the first gaseous condensation tube 9 is connected to the liquid inlet ends of all the first condensation tubes 1 at the same time;

[0103] A second gaseous condensation tube 10, which is connected to the liquid inlet ends of all the second condensation tubes 6 at the same time;

[0104] A first liquid condenser tube 11, which is connected to the liquid outlet ends of all the first condensers 1 at the same time;

[0105] The second liquid condenser tube 12 is connected to the outflow ends 5 of all the second condenser tubes 6 at the same time.

[0106] Example 2

[0107] The falling film condenser of the present invention, this embodiment 2 includes all the schemes of embodiment 1; therefore, the same points as embodiment 1 will not be repeated, and only the differences are described here. Specifically, the falling film condenser of the present invention includes: the condenser tube group of embodiment 1; Fig.10 The present invention is shown to be installed with at least two condenser tube groups;

[0108] It also includes a condenser main box 13, see Fig.10 The condenser main box 13 has an exhaust passage 14 in the middle and condensation chambers 15 on both sides of the exhaust passage 14; a fan 16 is vertically provided above the condenser main box 13, and the fan 16 is connected to the exhaust passage 14; a water pool 17 is provided below the condenser main box 13;

[0109] like Fig.10 As shown, the condensation bin 15 is connected to another condensation bin 15 and the exhaust passage 14 through the hollow area above the water pool 17;

[0110] See also Fig.10 and Fig.11 , each of the condensing bins 15 has an air inlet 23 on its upper side;

[0111] Fig.10 It is shown that each of the condensing bins 15 is respectively installed with the condensing tube group described in Example 1, and the condensing tube group covers the cross section of the condensing bin 15, that is, see Fig.10 When wind blows through the condensation bin 15 , the wind must pass through the condensation tube group; the condensation tube group is located above the condensation bin 15 as a whole.

[0112] For further information, see Fig.10 A filler 18 is installed in each of the condensation bins 15, and the filler 18 is located vertically below the condensation pipe group.

[0113] For further information, see Fig.10 and Fig.11 A buffer space 19 is provided above each of the condensation bins 15 , and the buffer space 19 is at a horizontal height with the air inlet 23 .

[0114] For further information, see Figure 6 , Figure 7 and Figure 8 , including a main water pipe 20, the main water pipe 20 is at an inclined angle, and the main water pipe 20 is connected to at least three water distribution pipes 21, Figure 6 and Figure 8 It is shown that there are multiple water distribution pipes 21, the number of which is the same as that of the first pipeline body 2; at least three of the water distribution pipes 21 are distributed in a stepped manner and are on the same oblique line; Figure 7 It is shown that each of the water distribution pipes 21 has an outlet 22 below; the inclination angle of the water pipes matches the inclination angle of the first condenser pipe 1;

[0115] A water distribution pipe 21 is arranged in parallel above each of the first pipe bodies 2 at the top of the condensing pipe group, and an outlet 22 of the water distribution pipe 21 is adjacent to the vertical upper surface of the first pipe body 2 .

[0116] When the water distribution pipe 21 drains downward, the condensed water forms a vertical water film with at least each row of the first pipe body 2 and the second pipe body 7 in the condenser tube group, so that the condensed water exchanges heat with the first condenser tube 1 and the second condenser tube 6 in the condenser tube group and the gaseous refrigerant completes the phase change; Figure 7 As shown, the water film forms an oblique angle with the flow direction of the gaseous refrigerant and flows downward respectively; when the fan 16 is started to exhaust air outward, the external fresh air is sucked in from the position of the air inlet 23, and at least passes through the condenser tube group and the top of the water pool 17 and finally discharged through the exhaust channel 14; see Fig.11 , Fig.11 An air flow effect diagram was drawn, in which the cold air flows vertically downward from the gap between every two drainage membranes, exchanges heat with the condenser tube and condensed water, takes away heat, and causes the gaseous refrigerant to change phase.

[0117] Example 3

[0118] The falling film condenser of the present invention, this embodiment 2 includes all the schemes of embodiment 1; therefore, the same points as embodiment 1 will not be repeated, and only the differences are described here. Specifically, the falling film condenser of the present invention deletes the accessory filler 18 in the prior art, and only consists of the condenser tube group and the condenser main box 13 in embodiment 1;

[0119] like Fig.12 As shown, the condenser main box 13 is composed of: an exhaust passage 14 in the middle, and condensation chambers 15 on both sides of the exhaust passage 14; a fan 16 is provided vertically above the condenser, and the fan 16 is connected to the exhaust passage 14; a water pool 17 is provided below the condenser; the condensation chamber 15 is connected to the exhaust passage 14 through the top of the water pool 17;

[0120] Each of the condensing bins 15 has an air inlet on its upper side;

[0121] Each of the condensing bins 15 is respectively provided with the condensing pipe group, and the condensing pipe group covers the entire cross section of the condensing bin 15. Fig.10 When wind blows through the condensation bin 15 , the wind must pass through the condensation tube group; the condensation tube group is located above the condensation bin 15 as a whole.

[0122] For further information, see Fig.12 A buffer space 19 is provided above each of the condensation bins 15 , and the buffer space 19 is at a horizontal height with the air inlet 23 .

[0123] For further information, see Figure 6 , Figure 7 and Figure 8 , including a main water pipe 20, the main water pipe 20 is at an inclined angle, and the main water pipe 20 is connected to at least three water distribution pipes 21, Figure 6 and Figure 8 It is shown that there are multiple water distribution pipes 21, the number of which is the same as that of the first pipeline body 2; at least three of the water distribution pipes 21 are distributed in a stepped manner and are on the same oblique line; Figure 7 It is shown that each of the water distribution pipes 21 has an outlet 22 below; the inclination angle of the water pipes matches the inclination angle of the first condenser pipe 1;

[0124] A water distribution pipe 21 is arranged in parallel above each of the first pipe bodies 2 at the top of the condensing pipe group, and an outlet 22 of the water distribution pipe 21 is adjacent to the vertical upper surface of the first pipe body 2 .

[0125] When the water distribution pipe 21 drains downward, the condensed water forms a vertical water film with at least each row of the first pipe body 2 and the second pipe body 7 in the condenser tube group, so that the condensed water exchanges heat with the first condenser tube 1 and the second condenser tube 6 in the condenser tube group and the gaseous refrigerant completes the phase change; Figure 7 As shown, the water film forms an oblique angle with the flow direction of the gaseous refrigerant and flows downward respectively; when the fan 16 is started to exhaust air outward, the external fresh air is sucked in from the position of the air inlet 23, and at least passes through the condenser tube group and the top of the water pool 17 and finally discharged through the exhaust channel 14; see Fig.11 , Fig.11 An air flow effect diagram was drawn, in which the cold air flows vertically downward from the gap between every two drainage membranes, exchanges heat with the condenser tube and condensed water, takes away heat, and causes the gaseous refrigerant to change phase.

[0126] Example 4

[0127] The condensation method of the present invention adopts the condensation tube set of Example 1 or all the schemes of the falling film condenser of Examples 2 and 3;

[0128] Obtaining a gaseous refrigerant, the gaseous condensation comes from a high-temperature and high-pressure gaseous refrigerant supplied by a compressor of a refrigeration device; the gaseous refrigerant flows obliquely downward along the first condensing tube 1 and the second condensing tube 6 of the condensing tube group;

[0129] Obtain condensed water, which is the water discharged from the water distribution pipe 21, and the condensed water is distributed vertically downward; see Figure 6 , Figure 7 and Figure 8 When the water distribution pipe 21 drains downward, the condensed water forms a vertical water film with at least each row of the first pipe body 2 and the second pipe body 7 in the condenser tube group, so that the condensed water exchanges heat with the first condenser tube 1 and the second condenser tube 6 in the condenser tube group and the gaseous refrigerant completes the phase change; Figure 7 As shown, the water film and the flow direction of the gaseous refrigerant form an oblique angle and flow downward respectively;

[0130] Get cool air, such as Fig.10 and Fig.12 As shown, the cold air comes from the fan 16 that is started and then exhausts the air outward, sucking in the fresh air from the air inlet 23, and passing through at least the condenser tube group and the top of the pool 17, and finally being discharged through the exhaust channel 14; see Fig.11 , Fig.11 The air flow effect diagram is drawn, and the cold air flows vertically downward from the gap between each two drainage membranes, exchanges heat with the condenser tube and condensed water, takes away heat, and causes the gaseous refrigerant to change phase;

[0131] By utilizing the first condenser tube 1 and the second condenser tube 6 at an inclined angle in the condenser tube group, the gaseous refrigerant is transformed into liquid refrigerant and flows downward quickly and promptly; space is vacated in the first condenser tube 1 and the second condenser tube 6 in time to retain a larger heat exchange area, so that more gaseous refrigerant completes phase change, thereby improving efficiency.

[0132] For further information, see Fig.11 When the condensed water is drained on the first pipe body 2, since the first condenser tube 1 and the second condenser tube 6 are inclined at different angles, the water can at least partially flow to the first bending portion 3, thereby increasing the heat exchange area and solving the problem that heat exchange cannot be performed at the current bending portion.

[0133] For further information, see Fig.10 , Fig.11 and Fig.12 , using the condenser tube group at an inclined angle to achieve a wider air inlet 23;

[0134] The buffer space 19 is used to achieve a more uniform distribution of cold air. In addition, the cold air can enter the gap between each water film in the condenser tube group at a more uniform speed after entering the buffer space 19 through the air inlet 23.

[0135] Example 5

[0136] The refrigeration system of the present invention includes all the solutions of the falling film condenser of Example 2 or Example 3, and adopts the condensation method of Example 4 to realize the refrigeration system of the present invention, which at least includes: the first liquid condenser tube 11 and the second liquid condenser tube 12 in the falling film condenser are connected to an expansion valve, the expansion valve is connected to an evaporator, the evaporator is connected to a compressor, and the compressor is connected to the first gaseous condenser tube 9 and the second gaseous condenser tube 10 of the condenser.

[0137] The advantages brought by embodiments 1 to 5 of the present invention are:

[0138] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group, since the first condenser tube 1 and the second condenser tube 6 of the condenser tube group are respectively at an inclined angle, the entire condenser tube group is at an inclined angle, so that during the application process, the air inlet surface is increased, thereby solving the contradiction between the size of the air inlet and the volume of the condenser in the prior art.

[0139] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group are configured to change the position of the air inlet 23, set the position of the air inlet 23 on the side of the condenser main box 13, and the key point is that the position is above the condensation bin 15, and the present invention changes the air inlet direction to enter the air from above, so that the flow directions of the air inlet and the water distribution are the same, so that the water on the surface of the condenser tube will not be blown away and the condenser tube will not be exposed;

[0140] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group, because the air inlet 23 is arranged on the side, can solve the problems of large air intake volume and volume, and also play a role of being away from the fan, so that it is not easy to suck the hot air from the fan, thereby solving the problem that the current technical solution easily sucks back the hot air from the fan.

[0141] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group realize upper air intake because the position of the air inlet 23 is higher than the condenser tube group; and the condensation bin 15 also has a buffer space 19, so that the wind can pass evenly between the water films of the condenser tube group, thereby solving the problems in the prior art that the side air intake will blow away the water on the surface of the condenser tube, and the existing condenser tube will block the air intake.

[0142] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group have the same air inlet direction and water flow direction, and the wind passes through the water films. While taking away heat, the water on the surface of the condenser tube will not be blown away, thereby solving the problem in the prior art that if any part of the surface of the condenser tube is not covered with water, then a whole larger area below the position will not be covered with water, seriously affecting the condensation effect.

[0143] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group have the same air inlet direction and water flow direction, and the wind passes through the water films, so the water on the surface of the condenser tube will not be blown away. On the one hand, it is beneficial to take away heat, and on the other hand, the wind is more evenly distributed, which solves the problems that water will hinder the air inlet, the wind will also blow away the water on the surface of the condenser tube, and the water will cause uneven wind distribution; it also solves the problem in the prior art that the wind first contacts the filler and then heats up.

[0144] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group, the incoming wind first contacts the first condenser tube 1 and the second condenser tube 6, which more effectively improves the efficiency. The condenser tube group of the present invention is at an inclined angle, and the first pipeline body 2 and the second pipeline body 7 are arranged vertically, and the flow directions of water and wind are the same. Therefore, on the one hand, the problem of temperature rise caused by the filler is solved. On the other hand, the present invention can do without the filler 18 and can delete the filler 18, which changes the traditional prejudice in the industry. In the absence of filler, the wind guidance is still very good, and the cost is low, while the efficiency can be improved.

[0145] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group, the first condenser tube 1 and the second condenser tube 6 in the condenser tube group of the present invention are at an inclined angle, and the first condenser tube 1 and the second condenser tube 6 form a vertical row under the inclined angle, and the liquid refrigerant in the first condenser tube 1 and the second condenser tube 6 can quickly flow into the first liquid condenser tube 11 and the second liquid condensation refrigerant tube 12, leaving a larger contact area for the first condenser tube 1 and the second condenser tube 6 for heat exchange in real time, so that the phase change of the refrigerant is more efficient and more sufficient. And even if the power of the refrigeration unit is turned on a little bit, due to the improvement of the heat exchange capacity, the refrigeration capacity of the evaporator will not be affected, thereby saving the condensation cost and greatly improving the efficiency. Because the heat exchange area is large, the phase change conversion rate of the refrigerant is higher, and the efficiency of the original high power can be achieved when the power of the refrigeration unit is small.

[0146] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group are at an inclined angle, so the liquid refrigerant in all the first condenser tubes 1 and the second condenser tubes 6 can flow forward better, thus solving the current problems of space occupied by liquid refrigerant in the condenser tubes and low heat exchange efficiency, and at the same time providing a large amount of refrigerant for the evaporator, bringing about the effect of one plus one being greater than two.

[0147] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group can make the liquid refrigerant in the first condenser tube 1 and the second condenser tube 6 flow slowly forward without the push of the compressor even after the refrigeration unit is shut down, so that the refrigerant in the first condenser tube 1 and the second condenser tube 6 is gaseous; and this is also convenient for the next startup, when more liquid refrigerant is supplied to the evaporator at the moment of startup. The problem that a large amount of liquid refrigerant remains in the condenser tube until the system is shut down, but part of the gaseous refrigerant is sucked into the evaporator is solved.

[0148] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group, since the first condenser tube 1 and the second condenser tube 6 are always in an inclined state, and the position of the inlet end 4 is higher than the outlet end 5, it is not easy for liquid refrigerant to remain in the condenser tube whether the refrigeration unit is in operation or in a shutdown state, and it also solves the serious problem of liquid refrigerant residue caused by the current vertical arrangement of condenser tubes.

[0149] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group, because the first condenser tube 1 and the second condenser tube 6 are always in an inclined state, the liquid refrigerant can be discharged in real time, and even if the condenser tube is bent, it is not easy for the liquid refrigerant to accumulate; compared with the prior art, the heat exchange area is increased and the efficiency is high; it solves the current problem that the liquid refrigerant is deposited more due to the high and low inclination angles or slight bends of the condenser tube, which greatly reduces the area of ​​heat exchange and causes the refrigeration capacity of the refrigeration unit to be not proportional to the power. Compared with the prior art, the present invention greatly improves the heat transfer efficiency when the volume is the same and the power is turned on.

[0150] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group, because the first condenser tube 1 and the second condenser tube 6 are always in an inclined state, so that the liquid refrigerant can flow smoothly, which solves the problem that the ends of the condenser tubes are currently narrowed, further causing at least a part of the liquid refrigerant in each condenser tube to be stored inside and unable to come out.

[0151] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group, since the first condenser tube 1 and the second condenser tube 6 are arranged at intervals; and the inlet end 4 of the first condenser tube 1 and the inlet end 4 of the second condenser tube 6 are in opposite directions; the outlet end 5 of the first condenser tube 1 and the outlet end 5 of the second condenser tube 6 are in opposite directions; therefore, the present invention solves the problem that when the number of arranged condenser tubes is too large, the ends of the condenser tubes can achieve good sealing without being narrowed.

[0152] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group, by installing the condenser tube group above the condensation bin 15 and combining the design of the air inlet 23 and the buffer space 19, can allow air to enter from above, the wind first contacts the condenser tube, and the incoming air flows along the gaps in the water film, thereby solving the problem of not blowing away the water on the surface of the condenser tube to expose the condenser tube, and solving the problem of the water film in the prior art blocking the air intake, thereby overcoming the existing contradictory problems.

[0153] The condenser tube group of the present invention and the falling film condenser, condensation method and refrigeration system using the condenser tube group can discharge the liquid refrigerant in time, thereby solving the current problem that the liquid refrigerant occupies the space of the condenser tube, reduces the area of ​​the condenser tube for heat exchange, wastes the power of the compressor and condenser, and reduces the condensation amount. It also solves the current problem that the amount of cold water needs to be increased and the temperature of the cold water needs to be lowered to achieve condensation.

[0154] The words "first", "second" and similar words used in the specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "an" or "the" do not indicate a quantitative limitation, but rather indicate the presence of at least one. Words such as "include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0155] The preferred embodiments of the present invention described above are only the preferred embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the attached claims. For ordinary technicians in this field, other embodiments can be obtained according to the drawings without creative work, and any changes based on the claims of the present invention are within the protection scope of the present invention.

Claims

1. A condenser tube assembly, characterized in that: include: A first condenser tube, the first condenser tube having at least three first pipeline bodies arranged in parallel, each of the first pipeline bodies having a first bending portion between another first pipeline body; and each two adjacent first bending portions are respectively located at two different ends of the first pipeline body; The first condenser tube has an inlet end and an outlet end, the inlet end is at a higher level than the outlet end; the levels of at least three first pipeline bodies are at gradually decreasing positions in a step-like manner; each of the first bending portions is at the same inclination angle; At least three of the first pipeline bodies and the first bending portion, the inlet end and the outlet end are on the same oblique line; A second condenser, the second condenser having at least three second pipe bodies arranged in parallel, each of the second pipe bodies having a second bending portion between the second pipe bodies; each two adjacent second bending portions are respectively located at two different ends of the second pipe body; the second condenser has an inlet end and an outlet end, the horizontal position of the inlet end is higher than the horizontal position of the outlet end; the horizontal heights of at least three second pipe bodies are respectively at positions that gradually decrease in a step-like manner; each of the second bending portions is respectively at the same inclination angle; at least three second pipe bodies and the second bending portion, the inlet end and the outlet end are respectively on the same oblique line; The first condenser tube and the second condenser tube are in a vertically stacked state; the first pipe body of the first condenser tube and the second pipe body of the second condenser tube are in the same vertical line; the first bend of the first condenser tube and the second bend of the second condenser tube are in a vertical non-overlapping position; the first condenser tube and the second condenser tube are spaced apart; The inlet end of the first condenser tube and the inlet end of the second condenser tube are in opposite directions; the outlet end of the first condenser tube and the outlet end of the second condenser tube are in opposite directions.

2. The condenser tube assembly according to claim 1, characterized in that: It includes at least three of the first condensing tubes and at least three of the second condensing tubes.

3. The condenser tube assembly according to claim 2, characterized in that: include: A first gaseous condenser tube, the first gaseous condenser tube being connected to the liquid inlet ends of all the first condensers at the same time; A second gaseous condenser tube, the second gaseous condenser tube being connected to the liquid inlet ends of all the second condenser tubes at the same time; A first liquid condenser tube, the first liquid condenser tube being connected to the liquid outlet ends of all the first condensers at the same time; The second liquid condenser is connected to the outflow ends of all the second condensers at the same time.

4. Falling film condenser, characterized in that: include: The condenser tube assembly according to claim 3; A condenser main box, the condenser main box having an exhaust passage in the middle and condensation bins on both sides of the exhaust passage; a fan is provided vertically above the condenser main box, the fan being connected to the exhaust passage; A water pool is provided below the condenser main box; The condensation chamber is connected to the exhaust passage through the top of the water pool; Each of the condensing bins has an air inlet on its upper side; The condensation pipe group is installed in each of the condensation bins; the condensation pipe group is located at the top of the condensation bin as a whole; It includes a main water pipe, which is at an inclined angle, and is connected to at least three water distribution pipes, which are distributed in a stepped manner and are on the same inclined line; each of the water distribution pipes has an outlet below; A water distribution pipe is arranged in parallel above each first pipe body at the top of the condensing pipe group, and the outlet of the water distribution pipe is adjacent to the vertical upper surface of the first pipe body.

5. The falling film condenser according to claim 4, characterized in that: A filler is installed in each of the condensation bins, and the filler is located vertically below the condensation pipe group.

6. The falling film condenser according to claim 4, characterized in that: A buffer space is provided above each of the condensing bins, and the buffer space is at a horizontal height with the air inlet.

7. Falling film condenser, characterized in that: No filler is provided, and the condenser tube assembly and the condenser main box according to claim 3 are formed; A condenser main box, the condenser main box having an exhaust passage in the middle and condensation bins on both sides of the exhaust passage; a fan is provided vertically above the condenser main box, the fan being connected to the exhaust passage; A water pool is provided below the condenser main box; The condensation chamber is connected to the exhaust passage through the top of the water pool; Each of the condensing bins has an air inlet on its upper side; The condensation pipe group is installed in each of the condensation bins; the condensation pipe group is located at the top of the condensation bin as a whole; It includes a main water pipe, which is at an inclined angle, and is connected to at least three water distribution pipes, which are distributed in a stepped manner and are on the same inclined line; each of the water distribution pipes has an outlet below; A water distribution pipe is arranged in parallel above each first pipe body at the top of the condensing pipe group, and the outlet of the water distribution pipe is adjacent to the vertical upper surface of the first pipe body.

8. Condensation method, characterized in that: A condenser tube assembly as described in any one of claims 1 to 3, a falling film condenser as described in any one of claims 4 to 6, or a falling film condenser as described in claim 7; Obtaining a gaseous refrigerant, wherein the gaseous refrigerant flows obliquely downward along the first condensing tube and the second condensing tube of the condensing tube group; Acquiring condensed water, wherein the condensed water is distributed vertically downward; The condensed water forms a vertical water film with at least each row of the first pipe body and the second pipe body in the condenser tube group, so that the condensed water exchanges heat with the first condenser tube and the second condenser tube in the condenser tube group and the gaseous refrigerant completes the phase change; the water film forms an oblique angle with the flow direction of the gaseous refrigerant and flows downward respectively; Obtaining cold air, which flows vertically downward from the gap between each two drainage membranes, exchanges heat with the condenser tube and condensed water, takes away heat, and changes the phase of the gaseous refrigerant; By utilizing the first condenser tube and the second condenser tube at an inclined angle in the condenser tube group, the gaseous refrigerant is transformed into liquid refrigerant and flows downward quickly and promptly; space is vacated in the first condenser tube and the second condenser tube in time to retain a larger heat exchange area, so that more gaseous refrigerant completes phase change, thereby improving efficiency.

9. The condensation method according to claim 8, characterized in that: A wider air inlet is achieved by using a condenser tube group at an inclined angle; Utilize buffer space to achieve more even distribution of cold air.

10. A refrigeration system, characterized in that: It comprises the falling film condenser according to any one of claims 4 to 6 or the falling film condenser according to claim 7, wherein the first liquid condenser tube and the second liquid condenser tube in the falling film condenser are connected to an expansion valve, the expansion valve is connected to an evaporator, the evaporator is connected to a compressor, and the compressor is connected to the first gaseous condenser tube and the second gaseous condenser tube of the condenser.

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