Flow dividing structure of finned heat exchanger

Abstract

The utility model discloses a shunting structure of a finned heat exchanger, which belongs to the technical field of finned heat exchangers, and comprises a finned heat exchanger main body, a seal head is welded on the top of the front side of the finned heat exchanger main body, and a liquid inlet cavity is formed between the seal head and the finned heat exchanger main body. The front side of the end socket is communicated with a liquid inlet pipe, a flow dividing assembly is arranged in the liquid inlet pipe, the rear side of the flow dividing assembly extends into the end socket, and the problems that the liquid inlet pipe of an existing finned heat exchanger is usually located at one end of a liquid inlet, so that a fin heat exchange pipe right facing the liquid inlet can distribute much refrigerating liquid, and the refrigerating efficiency is poor are solved. The problems that a small amount of refrigerant fluid is distributed to fin heat exchange tubes far away from a liquid inlet, and a small amount of refrigerant fluid can be distributed to fin heat exchange tubes at the upper position, so that the refrigerant fluid is distributed unevenly, and the heat exchange efficiency of the fin type heat exchanger is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of finned heat exchangers, in particular to a flow diversion structure of a finned heat exchanger. Background Art

[0002] Finned heat exchanger is the most widely used heat exchange equipment in gas and liquid heat exchangers. It achieves the purpose of enhancing heat transfer by adding fins to ordinary base tubes. The base tubes can be made of steel tubes, stainless steel tubes, copper tubes, etc., and the fins can also be made of steel strips, stainless steel strips, copper strips, aluminum strips, etc.

[0003] The liquid inlet pipe of the existing fin heat exchanger is usually located at one end of the liquid inlet. Therefore, the fin heat exchange tube facing the liquid inlet can be allocated more refrigerant, while the fin heat exchange tube far away from the liquid inlet can be allocated less refrigerant. The fin heat exchange tubes located higher can be allocated even less refrigerant, which can easily lead to uneven distribution of refrigerant and affect the heat exchange efficiency of the fin heat exchanger. Utility Model Content

[0004] The utility model provides a flow diversion structure of a finned heat exchanger, aiming to solve the problem that the liquid inlet pipe of the existing finned heat exchanger is usually located at one end of the liquid inlet, so that the finned heat exchange tube facing the liquid inlet can be allocated more refrigerant, while the finned heat exchange tube far away from the liquid inlet can be allocated less refrigerant, and the finned heat exchange tubes located higher can be allocated even less refrigerant, which can easily lead to uneven distribution of refrigerant and affect the heat exchange efficiency of the finned heat exchanger.

[0005] The utility model is implemented as follows: a flow diversion structure of a finned heat exchanger comprises a finned heat exchanger body, a head is welded on the top of the front side of the finned heat exchanger body, and a liquid inlet cavity is formed between the head and the finned heat exchanger body, the front side of the head is connected with a liquid inlet pipe, and a flow diversion component is arranged inside the liquid inlet pipe, the rear side of the flow diversion component extends to the inside of the head, and a flow equalizing orifice plate is slidably connected to the rear side of the inside of the head;

[0006] The diversion assembly includes a conical tube, a slip ring is welded on the surface of the conical tube, and the conical tube is slidably arranged inside the liquid inlet pipe through the slip ring. The rear side of the conical tube extends to the inside of the head and is connected to a diffusion part, and diffusion grooves are provided on both sides of the diffusion part.

[0007] In order to achieve the effect of limiting the moving trajectory of the diversion component, as a diversion structure of a fin-type heat exchanger of the utility model, the top and bottom of the slip ring are preferably provided with protrusions, and the side of the protrusion close to the inner wall of the liquid inlet pipe extends to the inside thereof, and the rear side of the protrusion is bolted with a return spring, and the rear side of the return spring is connected to the inner wall of the liquid inlet pipe.

[0008] In order to facilitate the movement of the protrusion, as a preferred diversion structure of a fin-type heat exchanger of the utility model, the top and bottom of the inner wall of the liquid inlet pipe are provided with a slide groove used in conjunction with the protrusion, and the return spring is located inside the slide groove.

[0009] In order to achieve the effect of limiting the position of the diversion component, as a diversion structure of a fin-type heat exchanger of the utility model, a first magnetic ring is sleeved on the front side of the conical tube surface, a second magnetic ring is embedded in the interior of the liquid inlet pipe, and the first magnetic ring and the second magnetic ring are magnetically attracted to each other.

[0010] In order to achieve the effect of sliding connection between the conical tube and the liquid inlet tube, as a preferred diversion structure of a fin-type heat exchanger of the utility model, the surface of the slip ring is in sliding contact with the inner wall of the liquid inlet tube, and the middle part of the conical tube surface is in contact with the inner wall of the liquid inlet tube.

[0011] In order to achieve the effect of reducing the stress on the flow balancing orifice plate, a diversion structure of a fin-type heat exchanger is preferably used in the utility model. A damper is bolted to the rear side of the flow balancing orifice plate, and the rear side of the damper is bolted to the fin-type heat exchanger body. A buffer spring is sleeved on the surface of the damper, and the buffer spring is connected to the flow balancing orifice plate and the fin-type heat exchanger body on one side respectively.

[0012] In order to achieve the effect of improving the buffering of the flow balancing orifice plate, as a preferred flow diversion structure of a fin heat exchanger of the utility model, the number of the dampers is several and they are arranged in a rectangular shape between the flow balancing orifice plate and the fin heat exchanger body.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The flow diversion structure of the finned heat exchanger can form a liquid inlet cavity between the head and the finned heat exchanger body by setting a head, so that it is convenient for liquid to enter the finned heat exchange tube in the finned heat exchanger body through the liquid inlet cavity, and by setting a flow diversion component and a flow equalizing orifice plate, the liquid entering the liquid inlet tube will be guided to the diffuser and the diffusion groove through the tapered tube. Since the diffuser is arranged in a trumpet shape, part of the incoming liquid is diverted to both sides in the liquid inlet cavity under the action of the diffuser and the diffusion hole, and at the same time, under the action of the flow equalizing orifice plate, the incoming liquid is diverted again, which can achieve a multi-stage diversion effect, so that the finned heat exchange tubes at different positions can obtain uniform refrigerant. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the overall structural diagram of the flow distribution structure of the fin type heat exchanger of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the main body of the finned heat exchanger in the utility model;

[0017] Figure 3 It is a schematic diagram of the connection between the head and the finned heat exchanger body in the utility model;

[0018] Figure 4 This is a schematic diagram of the connection between the flow distribution component, the flow balancing orifice plate and the head in the utility model;

[0019] Figure 5 It is a structural schematic diagram of the flow diversion component in the utility model;

[0020] Figure 6 It is a partial connection diagram of the slip ring and the liquid inlet pipe in the utility model.

[0021] In the figure, 1. finned heat exchanger body; 2. head; 3. liquid inlet chamber; 4. liquid inlet pipe; 5. diversion assembly; 501. cone tube; 502. slip ring; 503. diffuser; 504. diffusion groove; 6. flow equalizing orifice plate; 7. protrusion; 8. reset spring; 9. first magnetic ring; 10. second magnetic ring; 11. damper; 12. buffer spring. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0024] See also Figure 1-6 The utility model provides a technical solution: a flow diversion structure of a finned heat exchanger, comprising a finned heat exchanger body 1, a head 2 is welded on the top of the front side of the finned heat exchanger body 1, and a liquid inlet cavity 3 is formed between the head 2 and the finned heat exchanger body 1, a liquid inlet pipe 4 is connected to the front side of the head 2, and a flow diversion component 5 is arranged inside the liquid inlet pipe 4, the rear side of the flow diversion component 5 extends to the inside of the head 2, and a flow equalizing orifice plate 6 is slidably connected to the rear side of the inside of the head 2;

[0025] The diversion component 5 includes a conical tube 501, a slip ring 502 is welded on the surface of the conical tube 501, and the conical tube 501 is slidably arranged inside the liquid inlet pipe 4 through the slip ring 502, and the rear side of the conical tube 501 extends to the inside of the head 2 and is connected to a diffuser 503, and diffusion grooves 504 are provided on both sides of the diffuser 503.

[0026] In this embodiment: by setting the head 2, a liquid inlet cavity 3 can be formed between the head 2 and the finned heat exchanger body 1, so that it is convenient for the liquid to enter the finned heat exchange tube in the finned heat exchanger body 1 through the liquid inlet cavity 3, and by setting the diverter component 5 and the flow equalizing orifice plate 6, the liquid entering the liquid inlet pipe 4 will be guided to the diffuser 503 and the diffuser groove 504 through the conical tube 501. Since the diffuser 503 is arranged in a trumpet shape, part of the incoming liquid is diverted to both sides in the liquid inlet cavity 3 under the action of the diffuser and the diffuser hole, and at the same time, under the action of the flow equalizing orifice plate 6, the incoming liquid is diverted again, which can achieve a multi-stage diversion effect, so that the finned heat exchange tubes at different positions can obtain uniform refrigerant.

[0027] As a technical optimization solution of the utility model, protrusions 7 are provided on the top and bottom of the slip ring 502, and the protrusion 7 extends to the inside of the liquid inlet pipe 4 on one side close to the inner wall thereof, and a return spring 8 is bolted to the rear side of the protrusion 7, and the rear side of the return spring 8 is connected to the inner wall of the liquid inlet pipe 4.

[0028] In this embodiment: by providing the protrusion 7 and the return spring 8, when liquid is introduced into the liquid inlet pipe 4, the pressure of the incoming liquid can cause the diverter component 5 to be subjected to force, and the protrusion 7 can squeeze the return spring 8. With the help of the elasticity of the return spring 8, part of the pressure can be offset, thereby reducing the influence of the pressure on the diverter component 5.

[0029] As a technical optimization solution of the utility model, the top and bottom of the inner wall of the liquid inlet pipe 4 are both provided with sliding grooves used in conjunction with the protrusions 7, and the return spring 8 is located inside the sliding grooves.

[0030] In this embodiment, the sliding groove is provided to limit the moving track of the protrusion 7.

[0031] As a technical optimization solution of the utility model, a first magnetic ring 9 is sleeved on the front side of the surface of the cone tube 501, a second magnetic ring 10 is embedded in the interior of the liquid inlet tube 4, and the first magnetic ring 9 and the second magnetic ring 10 are magnetically attracted to each other.

[0032] In this embodiment, by providing the first magnetic ring 9 and the second magnetic ring 10 , the position of the shunt component 5 can be limited by the magnetic attraction between the first magnetic ring 9 and the second magnetic ring 10 when not in use.

[0033] As a technical optimization solution of the present invention, the surface of the slip ring 502 is in sliding contact with the inner wall of the liquid inlet pipe 4 , and the middle part of the surface of the cone tube 501 is in contact with the inner wall of the liquid inlet pipe 4 .

[0034] In this embodiment, by setting the surface of the slip ring 502 to be in sliding contact with the inner wall of the liquid inlet pipe 4, the sliding connection between the cone tube 501 and the liquid inlet pipe 4 can be achieved.

[0035] As a technical optimization solution of the utility model, a damper 11 is bolted to the rear side of the flow balancing orifice plate 6, and the rear side of the damper 11 is bolted to the fin-type heat exchanger body 1. A buffer spring 12 is sleeved on the surface of the damper 11, and the buffer spring 12 is connected to one side of the flow balancing orifice plate 6 and the fin-type heat exchanger body 1 respectively.

[0036] In this embodiment, by providing the damper 11 and the buffer spring 12 , the pressure on the flow balancing orifice plate 6 can be buffered by the coordinated use of the two, thereby reducing the influence of the inlet pressure on the flow balancing orifice plate 6 .

[0037] As a technical optimization solution of the present invention, there are several dampers 11 , which are arranged in a rectangular shape between the flow balancing orifice plate 6 and the finned heat exchanger body 1 .

[0038] In this embodiment, by setting the number of dampers 11 to be multiple and setting them in a rectangular shape between the flow balancing orifice plate 6 and the finned heat exchanger body 1, the effect of improving the buffering effect on the flow balancing orifice plate 6 can be achieved.

[0039] Working principle: First, the refrigerant is input through the liquid inlet pipe 4. Under the action of the inlet pressure, the magnetic attraction between the first magnetic ring 9 and the second magnetic ring 10 can be overcome, so that the conical tube 501 drives the slip ring 502 to move in the liquid inlet pipe 4, and the protrusion 7 squeezes the reset spring 8, and the inlet liquid is guided to the diffuser 503 and the diffuser groove 504 through the conical tube 501. Since the diffuser 503 is arranged in a trumpet shape, part of the inlet liquid is diverted to both sides in the liquid inlet cavity 3 by the action of the diffuser and the diffuser hole, and at the same time, the buffer spring 12 and the buffer spring 12 are used to prevent the inlet liquid from flowing out of the liquid inlet cavity 3. The diaphragm 11 buffers the force of the equalizing orifice plate 6, and the incoming liquid is evenly distributed to the finned heat exchange tubes in the finned heat exchanger body 1 through the equalizing orifice plate 6 again, so that two fluids with different temperatures flow in the heat exchange tubes and between the fins respectively, and heat is exchanged through heat conduction, convection and the like, and the fluid after heat exchange flows out through the discharge end of the finned heat exchanger body 1. When the heat exchange work is not in progress, the buffer spring 12 and the reset spring 8 are used to reset the cone tube 501 and the equalizing plate respectively, so as to facilitate the next use.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flow diversion structure of a finned heat exchanger, comprising a finned heat exchanger body (1), characterized in that: A head (2) is welded to the top of the front side of the finned heat exchanger body (1), and a liquid inlet cavity (3) is formed between the head (2) and the finned heat exchanger body (1); the front side of the head (2) is connected to a liquid inlet pipe (4), and a flow splitter component (5) is arranged inside the liquid inlet pipe (4); the rear side of the flow splitter component (5) extends to the inside of the head (2), and the rear side of the inside of the head (2) is slidably connected to a flow equalizing orifice plate (6); The flow dividing assembly (5) comprises a conical tube (501), a slip ring (502) is welded on the surface of the conical tube (501), and the conical tube (501) is slidably arranged inside the liquid inlet pipe (4) through the slip ring (502), and the rear side of the conical tube (501) extends to the inside of the head (2) and is connected to a diffusion part (503), and diffusion grooves (504) are provided on both sides of the diffusion part (503).

2. The flow diversion structure of a finned heat exchanger according to claim 1, characterized in that: The top and bottom of the slip ring (502) are both provided with protrusions (7), and the protrusion (7) extends into the interior of the liquid inlet pipe (4) on one side close to the inner wall thereof, and a return spring (8) is bolted to the rear side of the protrusion (7), and the rear side of the return spring (8) is connected to the inner wall of the liquid inlet pipe (4).

3. The flow diversion structure of a finned heat exchanger according to claim 2, characterized in that: The top and bottom of the inner wall of the liquid inlet pipe (4) are both provided with a slide groove for use with the protrusion (7), and the return spring (8) is located inside the slide groove.

4. The flow diversion structure of a finned heat exchanger according to claim 1, characterized in that: A first magnetic ring (9) is sleeved on the front side of the surface of the conical tube (501), a second magnetic ring (10) is embedded in the interior of the liquid inlet tube (4), and the first magnetic ring (9) and the second magnetic ring (10) are magnetically attracted to each other.

5. The flow diversion structure of a finned heat exchanger according to claim 1, characterized in that: The surface of the slip ring (502) is in sliding contact with the inner wall of the liquid inlet pipe (4), and the middle part of the surface of the cone tube (501) is in contact with the inner wall of the liquid inlet pipe (4).

6. The flow diversion structure of a finned heat exchanger according to claim 1, characterized in that: A damper (11) is bolted to the rear side of the flow balancing orifice plate (6), and the rear side of the damper (11) is bolted to the fin-type heat exchanger body (1). A buffer spring (12) is sleeved on the surface of the damper (11), and the buffer spring (12) is connected to the flow balancing orifice plate (6) and the fin-type heat exchanger body (1) at one side thereof.

7. The flow diversion structure of a finned heat exchanger according to claim 6, characterized in that: The dampers (11) are multiple in number and are arranged in a rectangular shape between the flow balancing orifice plate (6) and the finned heat exchanger body (1).

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