Laminar flow resistance device for throttling liquid pipe

Abstract

The utility model discloses a throttling liquid pipe laminar flow blocking device which comprises a fluid pipe, a central pipe arranged in the middle of the fluid pipe and a vortex plate fixed on the central pipe and spirally arranged around the central pipe in the length direction, and the central pipe is fixed on the fluid pipe through a fixing frame. And the hair stopping device is arranged between the throttler and the evaporator. According to the utility model, the vortex plates are utilized to form stable and ordered vortexes, so that refrigerants are forced to move forward in a rotational flow manner in a pipeline after refrigeration and throttling.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration systems, in particular to a throttling liquid pipe laminar flow resistance device. Background Art

[0002] Currently, the throttling device is a crucial mechanism in the refrigeration system cycle. The state of the refrigerant after the throttling device throttles the refrigerant directly affects the refrigeration effect of the refrigeration system cycle. In the prior art, after the refrigerant is throttled by the throttle, there is a considerable resistance in the refrigeration pipe, and the resistance directly affects the evaporation pressure of the refrigerant entering the evaporator. In order to avoid the influence of the resistance of the throttled refrigeration pipe on the evaporation pressure, the throttled refrigeration pipe is often shortened as much as possible. However, in large refrigeration systems, the flow rate of the refrigerant will change with the load of the refrigeration system, resulting in changes in the flow rate of the refrigerant flowing through the throttle. When the refrigerant flow rate decreases, the Reynolds number of the refrigerant fluid in the pipe decreases. In severe cases, a laminar flow state will be formed, resulting in increased resistance. It can be seen that simply shortening the throttled refrigeration pipe has little effect on the resistance. How to reduce the resistance change caused by the flow change is the fundamental solution to the change in the evaporation pressure of the evaporator. Summary of the Invention

[0003] An embodiment of the utility model provides a laminar flow resistance device for a throttling liquid pipe, which uses a vortex plate to form a stable and orderly vortex, so that the refrigerant is forced to swirl forward in the pipe after refrigeration throttling, so as to solve the problem in the prior art that the Reynolds number of the refrigerant in the pipe is reduced due to the change of the refrigerant flow in the pipe, thereby forming a laminar flow state, thereby causing increased resistance.

[0004] The purpose of the embodiment of the present utility model is to provide a laminar flow prevention device for a throttling liquid tube, comprising a fluid tube, a central tube arranged in the middle of the fluid tube, a vortex plate fixed on the central tube and spirally arranged around the central tube along the length direction, the central tube being fixed to the fluid tube by a fixing frame; the prevention device is arranged between the throttle and the evaporator.

[0005] Furthermore, the vortex plate is formed by spirally extending outward from the surface of the central tube, and the vortex plate extends outward in an inclined manner along the length direction of the central tube.

[0006] Furthermore, the vortex plate is formed integrally with the central tube.

[0007] Furthermore, a gap is formed between the vortex plate and the fluid tube, and the width of the vortex plate is greater than or equal to the inner radius of the fluid tube.

[0008] Furthermore, the throttle is connected to the evaporator through a refrigeration pipe, and the anti-emission device is arranged on the refrigeration pipe.

[0009] Furthermore, the diameter of the fluid pipe is greater than or equal to the diameter of the refrigeration pipe.

[0010] Furthermore, the fluid pipe is connected to the refrigeration pipe via a reducing joint.

[0011] Furthermore, the emission blocking device is installed on a side close to the evaporator.

[0012] Furthermore, there is at least one vortex plate, and the spiral directions of the multiple vortex plates are the same, and the intervals between them are consistent.

[0013] Furthermore, the emission blocking device is directly connected to the evaporator.

[0014] The beneficial effects of the embodiments of the present invention are as follows: without changing the throttle, evaporator and other components of the refrigeration system, the present invention only needs to add a vortex prevention device between the throttle and the evaporator, and use the vortex plate to form a stable and orderly vortex, so that the refrigerant is forced to realize a swirling forward in the pipeline after the refrigeration throttling, preventing the Reynolds number of the refrigerant in the pipeline from decreasing due to the change of the refrigerant flow in the pipeline and forming a laminar fluid state, reducing the resistance change in the refrigeration pipeline after throttling caused by the change of the refrigerant flow, and increasing the liquid pressure entering the evaporator, thereby improving the operating refrigeration state of the refrigeration system.

[0015] This utility model utilizes vortex plates to provide a higher average flow velocity and volume flow rate than laminar flow, mitigating interaction between the refrigerant and the fluid pipe, thereby reducing resistance. By placing a flow blocker near the evaporator, this prevents changes in fluid resistance within the refrigeration pipe between the flow blocker and the evaporator, which can lead to a decrease in evaporation pressure. This utility model maintains its simple structure, even if the length of the refrigeration pipe between the throttle and the flow blocker is extended without affecting the liquid pressure entering the evaporator.

[0016] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0018] Figure 1This is a connection diagram of a throttling liquid pipe laminar flow resistance device of the present invention.

[0019] Figure 2 This is a structural schematic diagram of a throttling liquid pipe laminar flow resistance device of the present utility model.

[0020] Figure 3 This is a schematic structural diagram of the vortex plate in Example 2 of a throttling liquid pipe laminar flow resistance device of the present utility model.

[0021] In the figure: 1 is a blocking device, 2 is a throttle, 3 is an evaporator, 4 is a refrigeration pipe, 101 is a fluid pipe, 102 is a central pipe, 103 is a fixing frame, and 104 is a vortex plate. DETAILED DESCRIPTION

[0022] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0023] In the description of the present invention, it should be understood that the terms "middle", "inside", "surface", "inward", "outward", etc. indicate orientations or positional relationships based on the orientations or positional relationships during use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the scope of protection of the present invention.

[0024] Example 1:

[0025] The utility model provides a throttling liquid tube laminar flow resistance device, comprising a fluid tube 101, a central tube 102 arranged in the middle of the fluid tube 101, a vortex plate 104 fixed on the central tube 102 and spirally arranged around the central tube 102 along the length direction, the central tube 102 is fixed to the fluid tube 101 by a fixing frame 103; the resistance device 1 is arranged between the throttle 2 and the evaporator 3.

[0026] See attached Figure 1 、 Figure 2Under the obstruction of the vortex plate 104, the refrigerant entering the fluid pipe 101 forms a rotating flow. Because rotating flow has a greater average flow velocity and volume flow rate than laminar flow at the same distance, the refrigerant flowing out of the blocking device 1 has a greater flow rate than before. This prevents the fluid flow rate in the refrigeration pipe 4 from decreasing when the refrigerant flow rate out of the throttle 2 decreases, thereby affecting the evaporation pressure of the evaporator 3. The central tube 102 is fixed to the middle of the fluid pipe 101 along its length by the fixing bracket 103. After the refrigerant enters the fluid pipe 101, it is affected by the vortex plate 104, causing the refrigerant flow direction to change completely, thus forming a rotating flow.

[0027] See attached Figure 3 The vortex plates 104 are formed by spirally extending outward from the surface of the central tube 102. The vortex plates 104 extend outward at an angle along the length of the central tube 102. Each vortex plate 104 forms at least one complete spiral along the length of the central tube 102. The vortex plates 104 form a certain angle with the surfaces of the central tube 102 and the fluid tube 101.

[0028] The vortex plate 104 is integrally formed with the central tube 102. In a preferred embodiment, the outer edge of the vortex plate 104 is curved inward relative to the inner edge where the vortex plate 104 connects to the central tube 102, so that the refrigerant has a force to merge toward the center during the rotational flow, thereby avoiding impact on the fluid tube 101 and reducing the flow rate.

[0029] A gap is formed between the vortex plate 104 and the fluid tube 101 , and the width of the vortex plate 104 is greater than or equal to the inner radius of the fluid tube 101 , so that the outer edge of the vortex plate 104 is closer to the inner wall of the fluid tube 101 .

[0030] The throttle 2 is connected to the evaporator 3 through a refrigeration pipe 4 , and the anti-emission device is arranged on the refrigeration pipe 4 .

[0031] The diameter of the fluid pipe 101 is greater than or equal to the diameter of the refrigeration pipe 4. When the fluid pipe 101 flows out to the refrigeration pipe 4, the diameter is reduced, further increasing the flow rate of the refrigerant. The fluid pipe 101 is connected to the refrigeration pipe 4 through a reducing joint.

[0032] In order to prevent the refrigerant flow rate from dropping significantly, thereby reducing the evaporation pressure, the anti-emission device is installed on the side close to the evaporator 3, thereby reducing the length of the refrigeration pipe 4 between the anti-emission device and the evaporator 3.

[0033] Example 2:

[0034] Unlike Example 1, there is at least one vortex plate 104, and the multiple vortex plates 104 have the same spiral direction and are spaced uniformly apart from each other. Each vortex plate 104 is separated from each other in the length direction and spaced uniformly apart, allowing each vortex plate 104 to remain relatively independent. This allows the refrigerant to form a spiral flow between the vortex plates 104 and merge at the outlet of the blocking device.

[0035] Example 3:

[0036] The difference from Example 1 is that the anti-emission device is directly connected to the evaporator 3, which further reduces the length of the refrigeration pipe 4 between the anti-emission device and the evaporator 3 and avoids the laminar flow resistance formed by the refrigerant in the refrigeration pipe 4.

[0037] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0038] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which are all within the protection of the present invention.

Claims

1. A laminar flow blocking device for a throttling liquid pipe, characterized in that: It includes a fluid pipe, a central pipe arranged in the middle of the fluid pipe, and a vortex plate fixed on the central pipe and spirally arranged around the central pipe along the length direction. The central pipe is fixed to the fluid pipe through a fixing frame; the anti-emission device is arranged between the throttle and the evaporator.

2. A throttling liquid pipe laminar flow blocking device according to claim 1, characterized in that: The vortex plate is formed by spirally extending outward from the surface of the central tube, and the vortex plate extends outward in an inclined manner along the length direction of the central tube.

3. A throttling liquid pipe laminar flow blocking device as claimed in claim 2, characterized in that: The vortex plate is formed integrally with the central tube.

4. A throttling liquid pipe laminar flow blocking device according to claim 1, characterized in that: A gap is formed between the vortex plate and the fluid tube, and a width of the vortex plate is greater than or equal to an inner radius of the fluid tube.

5. The laminar flow blocking device for a throttling liquid pipe according to claim 1, characterized in that: The diameter of the fluid pipe is greater than or equal to the diameter of the refrigeration pipe.

6. A throttling liquid pipe laminar flow blocking device according to any one of claims 1 to 5, characterized in that: There is at least one vortex plate, and the spiral directions of the multiple vortex plates are the same, and the intervals between them are consistent.

7. The laminar flow blocking device for a throttling liquid pipe according to claim 1, characterized in that: The emission blocking device is directly connected to the evaporator.

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