Heat exchanger for water chilling unit

Abstract

The utility model belongs to the technical field of heat exchangers, and particularly relates to a heat exchanger for a water chilling unit, which comprises a heat exchanger shell and an end socket, the heat exchanger shell is connected with the end socket through a flange plate, the end socket is provided with a liquid inlet pipe and a liquid outlet pipe, and the heat exchanger shell is provided with a coolant liquid inlet and a coolant gas outlet. A U-shaped heat exchange pipe is arranged in the heat exchange shell, a water inlet and a water outlet of the U-shaped heat exchange pipe penetrate through the flange plate and are formed in the end socket, a moving assembly is arranged at the bottom of the heat exchanger shell, a first magnetic plate attached to the outer side of the heat exchanger shell is arranged on the moving assembly, and a sliding groove is formed in the inner wall of the bottom of the heat exchanger shell. And a first fixing shaft is arranged in the sliding groove, the first fixing shaft is sleeved with a second magnetic plate attracted with the first magnetic plate, and a cooling liquid stirring plate is arranged at the top of the second magnetic plate. According to the device, more effective heat exchange can be carried out at all positions in the heat exchanger shell by stirring coolant liquid, so that the overall heat exchange effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchangers, and specifically relates to a heat exchanger for a chiller. Background Art

[0002] In the field of refrigeration technology, chillers are important refrigeration equipment and are widely used in various industrial and commercial fields. One of the core components of a chiller is the heat exchanger, which is responsible for the effective transfer and exchange of heat in the refrigeration cycle. However, traditional heat exchangers for chillers have some inherent problems in the process of coolant liquid heat exchange, which limits the improvement of their heat exchange efficiency.

[0003] Traditional chiller heat exchangers usually adopt a fixed coolant liquid distribution design, that is, when the coolant liquid is injected, its injection amount is set to a certain value, and once this amount is reached, the injection of the coolant liquid will stop. Although this design simplifies the operation process, there is a significant problem of uneven heat exchange in the actual heat exchange process.

[0004] Specifically, when the coolant liquid is injected into the heat exchanger and covers the U-shaped heat exchange tube, the U-shaped heat exchange tube mainly exchanges heat with the coolant liquid around it. However, for the coolant liquid near the inner wall and the bottom of the heat exchanger shell, due to the limitations of liquid fluidity and thermal conductivity, the coolant liquid in these areas often cannot effectively exchange heat with the U-shaped heat exchange tube. Therefore, the temperature of the coolant liquid in these areas rises slowly, resulting in a decrease in the overall heat exchange effect.

[0005] To this end, we propose a heat exchanger for a chiller, which stirs the coolant liquid to enable more efficient heat exchange at various locations inside the heat exchanger shell, thereby improving the overall heat exchange effect. Utility Model Content

[0006] The purpose of the utility model is to provide a heat exchanger for a chiller, which stirs the coolant liquid so that it can perform more effective heat exchange at various positions inside the heat exchanger shell, thereby improving the overall heat exchange effect.

[0007] The technical solutions adopted in this utility are as follows:

[0008] A heat exchanger for a chiller, comprising a heat exchanger shell and a head, wherein the heat exchanger shell is connected to the head through a flange, the head is provided with a liquid inlet pipe and a liquid outlet pipe, the heat exchanger shell is provided with a coolant liquid inlet port and a coolant gas outlet port, and a U-shaped heat exchange tube is provided inside the heat exchanger shell, the water inlet port and the outlet port of the U-shaped heat exchange tube both penetrate the flange and are provided inside the head;

[0009] A moving component is provided at the bottom of the heat exchanger shell, and a first magnetic plate that is in contact with the outer side of the heat exchanger shell is provided on the moving component. A slide groove is provided on the inner wall of the bottom of the heat exchanger shell, and a first fixed shaft is provided inside the slide groove. A second magnetic plate that is attracted to the first magnetic plate is sleeved on the first fixed shaft, and a coolant stirring plate is provided on the top of the second magnetic plate.

[0010] Furthermore, a cavity is formed between the sealing head and the heat exchanger shell, and a partition is arranged inside the cavity, and the partition divides the cavity into a liquid inlet cavity and a liquid discharge cavity.

[0011] Furthermore, a heat insulation layer is provided on the partition.

[0012] Furthermore, the moving component includes two fixed blocks arranged at the bottom of the heat exchanger shell, one of the fixed blocks is provided with a stepper motor, a threaded rod is installed at the output end of the stepper motor, the end of the threaded rod away from the stepper motor passes through one of the fixed blocks and is rotatably connected to the other fixed block, and a threaded sleeve is provided on the threaded rod, and the top of the threaded sleeve is connected to the first magnetic plate.

[0013] Furthermore, the second magnetic plate matches the slide groove.

[0014] Furthermore, the cooling liquid stirring plate is provided with through holes.

[0015] The technical effects achieved by this utility model are:

[0016] First, water enters the head through the liquid inlet pipe, and then water enters the U-shaped heat exchange tube through the water inlet. At the same time, the coolant liquid enters the heat exchanger shell through the coolant liquid inlet. When a certain amount of coolant liquid enters (that is, when it covers the U-shaped heat exchange tube), the coolant liquid stops injecting, thereby exchanging heat with the water inside the U-shaped heat exchange tube, so that the temperature of the water inside the U-shaped heat exchange tube is reduced. The cooled water is discharged into the head through the U-shaped heat exchange tube drain port, and then discharged through the drain pipe. However, in the actual cooling process, since the coolant liquid has a fixed amount when injected, once the injection is completed, it will no longer be added. Therefore, during the heat exchange process, the U-shaped heat exchange tube mainly exchanges heat with the coolant liquid around it, causing the temperature of these liquids to rise. However, for the coolant liquid near the inner wall and the bottom of the heat exchanger shell, its heat exchange effect is very limited, and it even takes a long time for effective heat exchange to occur. This uneven heat exchange phenomenon leads to a reduction in the overall heat exchange effect. For this reason, the moving component is put into operation, and the moving component drives the first magnetic plate to move at the bottom of the heat exchanger shell. Because the first magnetic plate and the second magnetic plate are attracted to each other, the second magnetic plate is driven to move on the first fixed axis inside the slide groove. The second magnetic plate drives the coolant stirring plate to move back and forth, and stirs the coolant liquid through the pushing force, so that the coolant liquid can change various positions, and the coolant liquid at various positions is exchanged, thereby improving the overall heat exchange effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is an exploded view of the utility model;

[0019] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0020] Figure 4 This utility model Figure 2 The structural diagram of A in the figure;

[0021] Figure 5 It is a disassembled diagram of the second magnetic plate of the utility model.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. Heat exchanger shell; 2. Head; 3. Flange; 4. Liquid inlet pipe; 5. Liquid discharge pipe; 6. Coolant liquid inlet; 7. Coolant gas outlet; 8. U-shaped heat exchange tube; 9. First magnetic plate; 10. Slide; 11. First fixed shaft; 12. Second magnetic plate; 13. Coolant stirring plate; 14. Cavity; 15. Partition; 16. Fixed block; 17. Stepper motor; 18. Threaded rod; 19. Threaded sleeve; 20. Through hole. DETAILED DESCRIPTION

[0024] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0025] like Figure 1-5 As shown, the technical solution adopted by the utility model is specifically as follows: a heat exchanger for a chiller comprises a heat exchanger shell 1 and a head 2, the heat exchanger shell 1 is connected to the head 2 through a flange 3, a liquid inlet pipe 4 and a liquid discharge pipe 5 are arranged on the head 2, a coolant liquid inlet port 6 and a coolant gas outlet port 7 are arranged on the heat exchanger shell 1, and a U-shaped heat exchange tube 8 is arranged inside the heat exchanger shell 1, and the water inlet and the outlet of the U-shaped heat exchange tube 8 are both arranged inside the head 2 through the flange 3;

[0026] A moving component is provided at the bottom of the heat exchanger shell 1, and a first magnetic plate 9 is provided on the moving component and is in contact with the outer side of the heat exchanger shell 1. A slide groove 10 is provided on the inner wall of the bottom of the heat exchanger shell 1, and a first fixed shaft 11 is provided inside the slide groove 10. A second magnetic plate 12 attracted to the first magnetic plate 9 is sleeved on the first fixed shaft 11, and a coolant stirring plate 13 is provided on the top of the second magnetic plate 12.

[0027] Its working principle is as follows: first, water enters the interior of the head 2 through the liquid inlet pipe 4, and then water enters the interior through the water inlet of the U-shaped heat exchange tube 8, and at the same time, the coolant liquid enters the interior of the heat exchanger shell 1 through the coolant liquid inlet port 6. When a certain amount of coolant liquid enters (that is, when it covers the U-shaped heat exchange tube 8), the coolant liquid stops injecting, thereby exchanging heat with the water inside the U-shaped heat exchange tube 8, so that the temperature of the water inside the U-shaped heat exchange tube 8 is reduced, and the cooled water is discharged into the interior of the head 2 through the drain port of the U-shaped heat exchange tube 8, and then discharged through the drain pipe 5. However, in the actual cooling process, since the coolant liquid has a fixed amount when injected, once the injection is completed, it will no longer be added. Therefore, in the heat exchange process, the U-shaped heat exchange tube 8 mainly exchanges heat with the coolant liquid around it, causing the temperature of these liquids to rise. However, for the coolant liquid near the inner wall and the bottom of the heat exchanger shell 1, its heat exchange effect is very limited, and it even takes a long time for effective heat exchange to occur. This uneven heat exchange phenomenon leads to a decrease in the overall heat exchange effect. For this reason, the moving component is put into operation, and the moving component drives the first magnetic plate 9 to move at the bottom of the heat exchanger shell 1. Because the first magnetic plate 9 and the second magnetic plate 12 are attracted to each other, the second magnetic plate 12 is driven to move on the first fixed axis 11 inside the slide groove 10. The second magnetic plate 12 drives the coolant stirring plate 13 to move back and forth, and stirs the coolant liquid through the pushing force, so that the coolant liquid can change various positions, and the coolant liquid at various positions is exchanged, thereby improving the overall heat exchange effect.

[0028] A cavity 14 is formed between the end cap 2 and the heat exchanger shell 1 , and a partition 15 is provided inside the cavity 14 . The partition 15 divides the cavity 14 into a liquid inlet cavity and a liquid discharge cavity.

[0029] Furthermore, a heat insulating layer is provided on the partition 15, so as to prevent the temperature of the water inside the liquid inlet chamber from being transferred to the temperature of the water inside the liquid discharge chamber, thereby improving the heat exchange effect.

[0030] The flange 3 is a flange 3 connected by bolts in the prior art, one flange 3 is connected to the head 2, and the other flange 3 is connected to the heat exchanger housing 1, which can be completed by making the two flanges 3 contact and then connecting them by bolts. This belongs to the prior art and will not be described in detail here.

[0031] The moving assembly includes two fixed blocks 16 arranged at the bottom of the heat exchanger housing 1, one of the fixed blocks 16 is provided with a stepper motor 17, a threaded rod 18 is installed at the output end of the stepper motor 17, the end of the threaded rod 18 away from the stepper motor 17 passes through one of the fixed blocks 16 and is rotatably connected to the other fixed block 16, and a threaded sleeve 19 is provided on the threaded rod 18, and the top of the threaded sleeve 19 is connected to the first magnetic plate 9.

[0032] The stepping motor 17 drives the threaded rod 18 to rotate, and the threaded rod 18 drives the threaded sleeve 19 to move the first magnetic plate 9, thereby driving the second magnetic plate 12 to move.

[0033] Among them, the first magnetic plate 9 matches the heat exchanger shell 1, that is, if the bottom of the heat exchanger shell 1 is circular, the shape of the first magnetic plate 9 is arc-shaped and fits the heat exchanger shell 1. This setting can not only make the first magnetic plate 9 move in a straight line, but also improve the effect of magnetic drive.

[0034] The second magnetic plate 12 matches the slide slot 10 , where matching means that the shapes are the same, and the second magnetic plate 12 can move smoothly inside the slide slot 10 without getting stuck.

[0035] The coolant stirring plate 13 is provided with through holes 20, and the through holes 20 can increase the flow area, allowing the coolant liquid to pass quickly during movement, thereby improving the water flow effect and reducing resistance to enable smooth movement.

[0036] The first magnetic plate 9 and the second magnetic plate 12 are neodymium iron boron magnets, which have high magnetic energy product and magnetic flux density and can significantly improve the magnetic effect.

[0037] The working principle of the utility model is as follows: firstly, water is allowed to enter the interior of the head 2 through the liquid inlet pipe 4, and then the water enters the interior through the water inlet of the U-shaped heat exchange tube 8, and at the same time, the coolant liquid enters the interior of the heat exchanger shell 1 through the coolant liquid inlet port 6. When a certain amount of coolant liquid enters (that is, when the U-shaped heat exchange tube 8 is covered), the coolant liquid stops being injected, thereby exchanging heat with the water inside the U-shaped heat exchange tube 8, so that the temperature of the water inside the U-shaped heat exchange tube 8 is reduced, and the cooled water is discharged into the interior of the head 2 through the drain port of the U-shaped heat exchange tube 8, and then discharged through the drain pipe 5. However, in the actual cooling process, since the coolant liquid has a fixed amount when injected, once the injection is completed, it will no longer be added. Therefore, in the heat exchange process, the U-shaped heat exchange tube 8 mainly exchanges heat with the coolant liquid around it, causing the temperature of these liquids to rise. However, for the coolant liquid near the inner wall and the bottom of the heat exchanger shell 1, its heat exchange effect is very limited, and it even takes a long time for effective heat exchange to occur. This uneven heat exchange phenomenon leads to a decrease in the overall heat exchange effect. For this reason, the moving component is put into operation, and the moving component drives the first magnetic plate 9 to move at the bottom of the heat exchanger shell 1. Because the first magnetic plate 9 and the second magnetic plate 12 are attracted to each other, the second magnetic plate 12 is driven to move on the first fixed axis 11 inside the slide groove 10. The second magnetic plate 12 drives the coolant stirring plate 13 to move back and forth, and stirs the coolant liquid through the pushing force, so that the coolant liquid can change various positions, and the coolant liquid at various positions is exchanged, thereby improving the overall heat exchange effect.

[0038] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A heat exchanger for a chiller, comprising a heat exchanger housing (1) and a head (2), characterized in that: The heat exchanger shell (1) is connected to the head (2) via a flange (3); a liquid inlet pipe (4) and a liquid outlet pipe (5) are provided on the head (2); a coolant liquid inlet port (6) and a coolant gas outlet port (7) are provided on the heat exchanger shell (1); and a U-shaped heat exchange tube (8) is provided inside the heat exchanger shell (1); a water inlet port and a water outlet port of the U-shaped heat exchange tube (8) both penetrate the flange (3) and are provided inside the head (2); A moving component is arranged at the bottom of the heat exchanger shell (1), and a first magnetic plate (9) is arranged on the moving component and is in contact with the outer side of the heat exchanger shell (1). A slide groove (10) is provided on the inner wall of the bottom of the heat exchanger shell (1), and a first fixed shaft (11) is arranged inside the slide groove (10). A second magnetic plate (12) that is attracted to the first magnetic plate (9) is sleeved on the first fixed shaft (11), and a coolant stirring plate (13) is arranged on the top of the second magnetic plate (12).

2. A heat exchanger for a chiller according to claim 1, characterized in that: A cavity (14) is formed between the sealing head (2) and the heat exchanger shell (1), and a partition (15) is arranged inside the cavity (14), and the partition (15) divides the cavity into a liquid inlet cavity and a liquid discharge cavity.

3. A heat exchanger for a chiller according to claim 2, characterized in that: A heat insulation layer is provided on the partition (15).

4. A heat exchanger for a chiller according to claim 1, characterized in that: The moving assembly comprises two fixed blocks (16) arranged at the bottom of the heat exchanger housing (1), one of the fixed blocks (16) being provided with a stepper motor (17), a threaded rod (18) being installed at the output end of the stepper motor (17), one end of the threaded rod (18) away from the stepper motor (17) passing through one of the fixed blocks (16) and being rotatably connected to the other fixed block (16), and a threaded sleeve (19) being provided on the threaded rod (18), the top of which is connected to the first magnetic plate (9).

5. The heat exchanger for a chiller according to claim 1, characterized in that: The second magnetic plate (12) matches the slide groove (10).

6. A heat exchanger for a chiller according to claim 1, characterized in that: The cooling liquid stirring plate (13) is provided with a through hole (20).

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