A condenser of a water-cooled screw water chiller

Abstract

The utility model discloses a condenser of water -cooled screw water chiller, including the casing, the left and right sides of casing all are installed with end cover through bolt, still include heat exchange mechanism, heat exchange mechanism includes fixed plate, through -hole, heat exchange pipe, thread protruding, baffle and guide vane, the inside left and right sides of casing all are equipped with fixed plate, and the side of fixed plate all is set up with the through -hole of uniform distribution, and the through -hole between two fixed plates corresponds all links through a heat exchange pipe, and the outer surface of heat exchange pipe all is equipped with thread protruding. The utility model discloses the setting of heat exchange mechanism makes refrigerant fluid flow along spiral path, avoids the resistance loss that straight angle turns brings, and cooperates the reverse thread protruding outside heat exchange pipe and forms reverse shearing force, reduces laminar dead zone, strengthens turbulent flow disturbance, has improved the heat exchange efficiency of condenser, and the cooling circulation of water -cooled screw water chiller is convenient.

Description

Technical Field

[0001] This utility model relates to the technical field of water-cooled screw chiller units, specifically a condenser for a water-cooled screw chiller unit. Background Technology

[0002] A water-cooled screw chiller is a device that uses water as a cooling medium and achieves a refrigeration cycle through a screw compressor. Its working principle is based on a vapor compression refrigeration cycle. The refrigerant absorbs heat from the chilled water in the evaporator and vaporizes. It is then compressed into a high-temperature, high-pressure gas by the screw compressor, enters the condenser to exchange heat with the cooling water, condenses into a liquid, and then returns to the evaporator after being throttled and depressurized by the expansion valve. This cycle repeats continuously, thereby cooling the chilled water. In the refrigeration cycle of the water-cooled screw chiller, the condenser is the core heat exchange component that achieves heat transfer.

[0003] In existing water-cooled screw chiller units, the condenser typically receives high-temperature, high-pressure refrigerant gas discharged from the compressor. This gas enters the condenser through the inlet and exchanges heat with the cooling water inside the pipes. The flowing cooling water carries away the heat from the refrigerant gas, causing it to condense into a liquid. The condensed refrigerant liquid exits from the condenser outlet and flows into subsequent equipment, completing the cooling cycle of the water-cooled screw chiller unit.

[0004] The aforementioned existing technology has the following problems: In order to improve heat exchange efficiency and protect heat exchange tubes, baffles are usually installed inside the condenser. The baffles are usually fixed vertically on the tube bundle at a certain interval and are in an arc shape. When cooling water flows in from one end of the shell, it will be blocked by the baffles and forced to repeatedly turn and flow. This will cause the fluid to turn at right angles, resulting in high resistance and easy generation of vortex dead zones. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a condenser for a water-cooled screw chiller unit. By setting the heat exchange mechanism, the refrigerant fluid flows along a spiral path, avoiding the resistance loss caused by right-angle turning. In addition, the reverse thread protrusion on the outside of the heat exchange tube forms a reverse shear force, reducing the laminar flow dead zone, enhancing turbulent disturbance, improving the heat exchange efficiency of the condenser, and facilitating the cooling cycle of the water-cooled screw chiller unit. This can effectively solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a condenser for a water-cooled screw chiller unit, including a shell, end caps being bolted to both the left and right sides of the shell, and a heat exchange mechanism; The heat exchange mechanism includes a fixed plate, through holes, heat exchange tubes, threaded protrusions, baffles, and guide holes. Fixed plates are provided on both the left and right sides of the interior of the shell. The sides of the fixed plates are provided with evenly distributed through holes. The corresponding through holes on the two fixed plates are connected by a heat exchange tube. The outer surface of the heat exchange tubes is provided with threaded protrusions. A baffle is provided in the middle of the inner wall of the shell. The baffle is spiral in shape and the direction of rotation is opposite to that of the threaded protrusions. The sides of the baffle are provided with evenly distributed guide holes.

[0007] Furthermore, an air inlet is provided at the left end of the upper side of the outer surface of the shell, and a liquid outlet is provided at the right end of the lower side of the outer surface of the shell, which facilitates the introduction of gas and the discharge of liquid.

[0008] Furthermore, a water inlet is provided on the upper side of the outer surface of the right end cap, and a water outlet is provided on the lower side of the outer surface of the right end cap, to facilitate the introduction and discharge of cooling water.

[0009] Furthermore, guide plates are provided on both the upper and lower sides of the inner wall of the left end cap. The two guide plates are symmetrically distributed and inclined to facilitate the flow of cooling water.

[0010] Furthermore, each of the fixed plates is provided with a partition on the side away from the center of the housing. The right side of the partition on the right side contacts the inner wall of the right end cap, and a gap is left between the partition on the left side and the left end cap to facilitate separation.

[0011] Furthermore, the partition on the right divides the space between the right fixed plate and the right end cap into two cavities, upper and lower. The partition on the left, the guide plate, the left fixed plate, and the left end cap together form space two, which has a U-shaped structure with an opening on the right, facilitating the back-and-forth flow of cooling water and making full use of the cooling water.

[0012] Furthermore, support seats are fixedly connected to the left and right sides of the lower outer surface of the shell, and the lower surface of the support seats is provided with evenly distributed positioning holes to facilitate the installation of the condenser in a suitable position.

[0013] Compared with the prior art, the beneficial effects of this utility model are: The refrigerant gas flows along a spiral path under the action of the baffles, avoiding the resistance loss caused by right-angle turns. Due to the presence of threaded protrusions with the opposite direction of rotation to the baffles, the contact area between the cooling water and the refrigerant gas in the heat exchange tube is increased. When the refrigerant gas comes into contact with the threaded protrusions, it forms a reverse shear force, which enhances turbulence and reduces dead zones, making the refrigerant gas more evenly distributed in the shell. Due to the presence of the guide holes, some refrigerant gas is allowed to flow through the guide holes, reducing eddies and improving the heat exchange efficiency of the condenser, which facilitates the cooling cycle of the water-cooled screw chiller unit. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a cross-sectional structural schematic diagram of the shell of this utility model; Figure 4 This is a schematic diagram of the baffle plate of this utility model; Figure 5 This is a schematic diagram of the heat exchange tube of this utility model.

[0015] In the figure: 1 shell, 2 end cover, 3 heat exchange mechanism, 31 fixing plate, 32 through hole, 33 heat exchange tube, 34 threaded protrusion, 35 baffle plate, 36 guide hole, 4 air inlet, 5 liquid outlet, 6 water inlet, 7 water outlet, 8 guide plate, 9 partition plate, 10 support base, 11 positioning hole. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-5 This embodiment provides a technical solution: a condenser for a water-cooled screw chiller unit, including a housing 1. End caps 2 are bolted to both the left and right sides of the housing 1. An air inlet 4 is provided on the upper left end of the outer surface of the housing 1, and a liquid outlet 5 is provided on the lower right end of the outer surface of the housing 1. A water inlet 6 is provided on the upper outer surface of the right end cap 2, and a water outlet 7 is provided on the lower outer surface of the right end cap 2. Guide plates 8 are provided on both the upper and lower sides of the inner wall of the left end cap 2. The two guide plates 8 are symmetrically distributed and inclined. A partition 9 is provided on the side of the fixing plate 31 away from the center of the housing 1. The right side of the right partition 9 is connected to the right side of the right end cap 2. The inner wall of the end cap 2 is in contact with the left side partition 9 and the left side end cap 2. The right side partition 9 divides the space between the right side fixing plate 31 and the right side end cap 2 into two cavities. The left side partition 9, the guide plate 8, the left side fixing plate 31 and the left side end cap 2 together form the second space. The second space has a U-shaped structure with the right side open. The left and right sides of the lower side of the outer surface of the shell 1 are fixedly connected to the support base 10. The lower surface of the support base 10 is provided with evenly distributed positioning holes 11. The operator uses fixing bolts to install the shell 1 through the positioning holes 11 on the support base 10 at the appropriate position of the water-cooled screw chiller unit.

[0018] The system also includes a heat exchange mechanism 3. The heat exchange mechanism 3 includes a fixed plate 31, through holes 32, heat exchange tubes 33, threaded protrusions 34, baffles 35, and guide holes 36. Fixed plates 31 are provided on both the left and right sides of the interior of the shell 1. The sides of the fixed plates 31 are provided with evenly distributed through holes 32. The corresponding through holes 32 on the two fixed plates 31 are connected by a heat exchange tube 33. The outer surface of the heat exchange tubes 33 is provided with threaded protrusions 34 (the materials of the heat exchange tubes 33 and the threaded protrusions 34 can be copper or copper alloys). The middle of the inner wall of the shell 1 is provided with a baffle 35. The baffle 35 is spiral and the direction of rotation is opposite to that of the threaded protrusions 34. The sides of the baffle 35 are provided with evenly distributed guide holes 36.

[0019] The working principle of this utility model is as follows: The staff used fixing bolts to install the housing 1 through the positioning holes 11 on the support 10 into the appropriate position of the water-cooled screw chiller unit; During operation, the refrigerant gas supplied by the screw compressor of the water-cooled screw chiller unit enters the casing through the air inlet 4. At the same time, cooling water is introduced into the casing 1 through the water inlet 6. The cooling water enters the upper heat exchange tube 33 through the through hole 32 on the right fixed plate 31 until it flows into the interior of the left end cover 2. Under the action of the guide plate 8 and the baffle 9, the cooling water is turned and flows into the lower heat exchange tube 33, and finally discharged from the outlet 7. After the refrigerant gas enters the shell 1, it flows along a spiral path under the action of the baffle 35. During the flow, the refrigerant gas comes into contact with the heat exchange tube 33 and the threaded protrusion 34, and exchanges heat with the cooling water inside the heat exchange tube 33. The temperature of the refrigerant gas decreases and condenses into liquid. Finally, it is discharged from the shell 1 through the liquid outlet 5 and flows into the subsequent equipment to complete the cooling cycle of the water-cooled screw chiller unit. During the flow of refrigerant gas, the spiral shape of the baffle 35 causes the refrigerant gas to flow along a spiral path, avoiding the resistance loss caused by right-angle turns. Due to the presence of the threaded protrusion 34, the heat exchange area between the cooling water and the refrigerant gas in the heat exchange tube 33 is increased. Moreover, the spiral direction of the threaded protrusion 34 is opposite to that of the baffle 35. When the refrigerant gas comes into contact with the threaded protrusion 34, it forms a reverse shear force, which enhances turbulence disturbance, reduces flow dead zones, and makes the refrigerant gas more evenly distributed in the shell 1. Due to the presence of the guide hole 36, some refrigerant gas is allowed to flow through the guide hole 36, reducing eddies and improving heat exchange efficiency.

[0020] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A condenser for a water-cooled screw chiller unit, comprising a housing (1), wherein end caps (2) are bolted to both the left and right sides of the housing (1), characterized in that: It also includes heat exchange mechanisms (3); The heat exchange mechanism (3) includes a fixed plate (31), a through hole (32), a heat exchange tube (33), a threaded protrusion (34), a baffle plate (35), and a guide hole (36). The interior of the shell (1) is provided with fixed plates (31) on both the left and right sides. The sides of the fixed plates (31) are provided with evenly distributed through holes (32). The corresponding through holes (32) on the two fixed plates (31) are connected by a heat exchange tube (33). The outer surface of the heat exchange tube (33) is provided with threaded protrusions (34). The middle of the inner wall of the shell (1) is provided with a baffle plate (35). The baffle plate (35) is spiral and the direction of rotation is opposite to that of the threaded protrusion (34). The sides of the baffle plate (35) are provided with evenly distributed guide holes (36).

2. The condenser of a water-cooled screw chiller unit according to claim 1, characterized in that: An air inlet (4) is provided on the left end of the upper side of the outer surface of the shell (1), and a liquid outlet (5) is provided on the right end of the lower side of the outer surface of the shell (1).

3. The condenser of a water-cooled screw chiller unit according to claim 1, characterized in that: An inlet (6) is provided on the upper side of the outer surface of the right end cap (2), and an outlet (7) is provided on the lower side of the outer surface of the right end cap (2).

4. The condenser of a water-cooled screw chiller unit according to claim 1, characterized in that: The inner wall of the left end cap (2) is provided with guide plates (8) on both the upper and lower sides. The two guide plates (8) are symmetrically distributed and are inclined.

5. The condenser of a water-cooled screw chiller unit according to claim 4, characterized in that: Each of the fixed plates (31) is provided with a partition (9) on the side away from the center of the shell (1). The right side of the partition (9) on the right side is in contact with the inner wall of the end cap (2) on the right side, and there is a gap between the partition (9) on the left side and the end cap (2) on the left side.

6. The condenser of a water-cooled screw chiller unit according to claim 5, characterized in that: The partition (9) on the right divides the space between the right fixing plate (31) and the right end cap (2) into two cavities, and the partition (9), the guide plate (8), the left fixing plate (31) and the left end cap (2) together form the second space, which is a U-shaped structure with an opening on the right.

7. The condenser of a water-cooled screw chiller unit according to claim 1, characterized in that: Support seats (10) are fixedly connected to the lower left and right sides of the outer surface of the shell (1), and the lower surface of the support seats (10) is provided with evenly distributed positioning holes (11).

Images