Flooded evaporator

Abstract

The utility model relates to the technical field of refrigerating systems, in particular to a flooded evaporator. The flooded evaporator comprises a barrel and a first liquid baffle, a cavity is formed in the barrel, an air outlet is formed in the barrel and communicates with the cavity, and the cavity is used for bearing a heat exchange medium; the first liquid baffle is connected with the inner wall, forming the cavity, of the cylinder body and is matched with the inner wall to form a circulation opening, and the first liquid baffle is located between the air outlet and the axis of the cylinder body in the radial direction of the cylinder body; wherein the area of the circulation opening is S, and the circulation area of the air outlet is S. The compressor has the advantages that the area of the circulation opening is reasonably set, so that the situation that the circulation opening is too small, consequently, the circulation amount of a heat exchange medium is insufficient, and then the air inlet amount of the compressor is affected is avoided, and the situation that the circulation opening is too large, namely the first liquid baffle is too far away from the air outlet, is avoided; therefore, the liquid blocking effect of the first liquid blocking plate is not good.

Description

TECHNICAL FIELD

[0001] The utility model relates to refrigerating system technical field especially relates to a full -liquid type evaporator. BACKGROUND

[0002] Full -liquid type evaporator usually includes cylinder, the heat exchange pipe in the inside of cylinder, bears the heat exchange medium in the cylinder, and heat exchange medium contacts with the medium in the heat exchange pipe and absorbs heat and evaporates, converts from liquid state into gaseous state, and flows out cylinder from the outlet pipe, finally enters the compressor. Therefore, when the conversion of heat exchange medium is not thorough, the heat exchange medium in gas -liquid mixed state appears, and the heat exchange medium in liquid state is sucked into the compressor and causes liquid hammer phenomenon, even damages the compressor.

[0003] For this, some full -liquid type evaporators increase the liquid baffle at the outlet of cylinder to prevent the compressor from sucking the liquid heat exchange medium, and the liquid baffle and the cylinder form the flow -through port for the flow of heat exchange medium, but if the flow -through port is too small, it is easy to hinder the gaseous heat exchange medium to flow towards the outlet, and then affect the air intake of the compressor, and if the flow -through port is too large, it will lead to the poor liquid blocking effect of the liquid baffle. SUMMARY

[0004] In view of the above technical problems, the utility model provides a full -liquid type evaporator.

[0005] A full -liquid type evaporator, comprising: a cylinder, a chamber is constructed inside, an outlet is formed on the cylinder, the outlet is communicated with the chamber, and the chamber is used for bearing heat exchange medium; a first liquid baffle is connected with the inner wall of the chamber formed by the cylinder and cooperates to form a flow -through port, along the axial direction of the outlet, the first liquid baffle is located between the outlet and the axis of the cylinder, wherein the area of the flow -through port is S1, the flow area of the outlet is S2, and the following is met:

[0006] In this way, after the heat exchange medium exchanges heat with the heat exchange pipe in the evaporator, it absorbs heat and rises in temperature and converts from liquid state into gaseous state, the gaseous heat exchange medium moves upward and flows out of the outlet, and then enters the compressor. The first liquid baffle is located between the outlet and the axis of the cylinder, that is, the first liquid baffle is located between the heat exchange medium in liquid state and the outlet, so as to prevent the heat exchange medium in liquid state from entering the outlet due to splashing and other reasons, causing the compressor to have liquid hammer phenomenon and other problems. In addition, the utility model reasonably sets the area of the flow -through port, so that the flow -through port is neither too small to cause the flow of heat exchange medium to be insufficient, thereby affecting the air intake of the compressor, nor too large, that is, the first liquid baffle is too far away from the outlet, so as to cause the poor liquid blocking effect of the first liquid baffle.

[0007] In one of the embodiments, the first liquid blocking plate extends along the axial direction of the cylinder body, and both ends of the first liquid blocking plate are provided with the flow-through opening.

[0008] In one of the embodiments, the first liquid blocking plate comprises a first connecting section, a stopping section and a second connecting section, the first connecting section and the second connecting section are connected to the two sides of the stopping section respectively and are arranged at an angle with the stopping section, and the sides of the first connecting section and the second connecting section away from the stopping section are connected with the inner wall respectively.

[0009] In one of the embodiments, along the axial direction of the cylinder body, the length of the first liquid blocking plate is L, and the diameter of the gas outlet is D, and 3D≤L≤4D is satisfied.

[0010] In one of the embodiments, the flooded evaporator further comprises a second liquid blocking plate, and the side of the cylinder body away from the gas outlet is provided with a liquid inlet, and along the axial direction of the liquid inlet, the second liquid blocking plate is located between the liquid inlet and the axial line of the cylinder body.

[0011] In one of the embodiments, the side of the cylinder body away from the gas outlet is provided with a liquid inlet, and the cylinder body is further provided with a gas-liquid separator, the gas-liquid separator is connected with the cylinder body and is located between the liquid inlet and the gas outlet.

[0012] In one of the embodiments, the gas-liquid separator comprises a shell and a stopping piece, the stopping piece is arranged in the shell and can stop the movement of the liquid heat exchange medium from the side of the gas-liquid separator close to the liquid inlet to the side of the gas-liquid separator close to the gas outlet.

[0013] In one of the embodiments, the stopping piece is arranged in a wire mesh structure.

[0014] In one of the embodiments, the cylinder body comprises a main body and end plates, the end plates are connected to the two ends of the main body, a plurality of fixing holes are arranged on the two end plates, the fixing holes on the two end plates correspond to each other along the axial direction of the cylinder body, and heat exchange pipes are arranged in the fixing holes.

[0015] In one of the embodiments, the shortest distance between the gas-liquid separator and the fixing hole is H, and 100mm≤H≤150mm is satisfied.

[0016] Compared with the prior art, the flow-through area of the flow-through opening formed by the cooperation between the first liquid blocking plate and the inner wall of the cylinder body is reasonably arranged, so that the flow-through opening will not be too small to cause the flow-through amount of the heat exchange medium to be insufficient, thereby affecting the air intake amount of the compressor, and the flow-through opening can also be avoided to be too large, that is, the first liquid blocking plate is too far away from the gas outlet, and the liquid blocking effect of the first liquid blocking plate is poor. Attached Figure Description

[0017] Fig. 1 This is a partial structural schematic diagram of one embodiment of the flooded evaporator provided by this utility model, but the main body is not shown;

[0018] Fig. 2 A schematic diagram of one embodiment of the flooded evaporator provided by this utility model;

[0019] Fig. 3 This is a cross-sectional view of one embodiment of the flooded evaporator provided by this utility model.

[0020] The symbols in the diagram represent the following meanings:

[0021] 100. Flooded evaporator; 10. Shell; 11. Chamber; 12. Main body; 13. End plate; 131. Fixing hole; 14. Gas outlet; 15. Liquid inlet; 16. Inner wall; 17. Gas outlet pipe; 18. Liquid inlet pipe; 20. First baffle plate; 21. Flow port; 22. First connecting section; 23. Stop section; 24. Second connecting section; 30. Second baffle plate; 40. Gas-liquid separator. Detailed Implementation

[0022] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0023] It should be noted that when a mechanism is referred to as being "fixed to" or "set on" another mechanism, it can be directly on the other mechanism or there may be an intervening mechanism. When a mechanism is considered to be "connected to" another mechanism, it can be directly connected to the other mechanism or there may be an intervening mechanism. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In the present application, unless otherwise explicitly specified and limited, the first feature is "on", "under" the second feature, which can be that the first feature is in direct contact with the second feature, or the first feature is indirectly in contact with the second feature through an intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature, which can be that the first feature is directly above or obliquely above the second feature, or only means that the first feature is higher in horizontal height than the second feature. The first feature is "below", "under" and "under" the second feature, which can be that the first feature is directly below or obliquely below the second feature, or only means that the first feature is lower in horizontal height than the second feature.

[0026] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more related listed items.

[0027] Please refer to Figs. 1-3 The utility model provides a full -liquid evaporator 100 passes through first liquid baffle 20 to stop liquid heat exchange medium to impact and splash to air outlet 14, to avoid the problem such as liquid knock and damage of compressor in this way.

[0028] A full-liquid evaporator 100, comprising a cylinder 10 and a first liquid baffle 20, the inside of the cylinder 10 is constructed with a chamber 11, the cylinder 10 is provided with an air outlet 14, the air outlet 14 is communicated with the chamber 11, and the chamber 11 is used for carrying heat exchange medium;The first liquid baffle 20 is connected with the inner wall 16 of the chamber 11 formed by the cylinder 10, and cooperates to form a flow-through opening 21, along the axial direction of the air outlet 14, the first liquid baffle 20 is located between the air outlet 14 and the axis of the cylinder 10;Wherein, the area of the flow-through opening 21 is S1, the flow-through area of the air outlet 14 is S2, and the following is satisfied: In this way, after the heat exchange medium exchanges heat with the heat exchange tube in the evaporator, it absorbs heat, rises in temperature and changes from liquid state to gaseous state. The gaseous heat exchange medium moves upward and flows out of the air outlet 14, and then enters the compressor. The first liquid baffle 20 is located between the air outlet 14 and the axis of the cylinder 10, that is, the first liquid baffle 20 is located between the liquid heat exchange medium and the air outlet 14, thereby preventing the liquid heat exchange medium from entering the air outlet 14 due to splashing and other reasons, causing the compressor to have liquid knock phenomenon and other problems.

[0029] In addition, the area of the flow-through opening 21 is reasonably set, so that the flow-through opening 21 will not be too small to cause insufficient flow of the heat exchange medium, thereby affecting the air intake of the compressor, and can also avoid the flow-through opening 21 being too large, that is, the first liquid blocking plate 20 is too far away from the air outlet 14, so that the liquid blocking effect of the first liquid blocking plate 20 is poor.

[0030] It needs to be explained that the flooded evaporator 100 stores the heat exchange medium inside, so due to gravity, the liquid heat exchange medium is located on the lower side of the cylinder body 10, and the gaseous heat exchange medium is naturally located on the upper side of the cylinder body 10, so the orientation words up and down in the context are the upper side and the lower side in the direction of gravity.

[0031] Preferably, the air outlet 14 is provided at the top of the cylinder body 10, so that the air outlet 14 is away from the liquid heat exchange medium, and the gaseous heat exchange medium can flow from the air outlet 14 to the compressor.

[0032] Further, the first liquid blocking plate 20 extends along the axial direction of the cylinder body 10, and both ends of the first liquid blocking plate 20 are configured with flow-through openings 21. In this way, the gaseous heat exchange medium can flow from the two flow-through openings 21 to the air outlet 14 in two directions, so that the gaseous heat exchange medium converted at each position can smoothly flow from the flow-through opening 21 to the air outlet 14.

[0033] The first liquid blocking plate 20 is connected to the inner wall 16 of the cylinder body 10 by a connecting piece or welding connection.

[0034] Further, the first liquid blocking plate 20 includes a first connecting section 22, a blocking section 23 and a second connecting section 24, the first connecting section 22 and the second connecting section 24 are respectively connected to both sides of the blocking section 23 and are arranged at an angle with the blocking section 23, and the side away from the blocking section 23 of the first connecting section 22 and the second connecting section 24 is respectively connected with the inner wall 16.

[0035] In this way, the first connecting section 22 and the second connecting section 24 are used to connect with the inner wall 16 of the cylinder body 10, and both form two connection points with the inner wall 16 of the cylinder body 10, which improves the connection strength of the first liquid blocking plate 20 and the cylinder body 10, and both are arranged at an angle with the blocking section 23, specifically, both are inclined away from the air outlet 14, thereby forming the above-mentioned flow-through opening 21, and the blocking section 23 is located between the two, which plays a major role in blocking the liquid from splashing towards the air outlet 14.

[0036] Preferably, in this embodiment, the first connecting section 22 and the second connecting section 24 are symmetrically arranged relative to the blocking section 23, and the center line of the first liquid blocking plate 20 is arranged in parallel with the axis of the cylinder body 10, so that the internal structure of the flooded evaporator 100 is more organized.

[0037] Along the axial direction of the cylinder 10, the length of the first liquid baffle 20 is L, and the diameter of the air outlet 14 is D, and it satisfies: 3D≤L≤4D. In this way, the liquid blocking protection effect of the first liquid baffle 20 on the air outlet 14 is ensured, and the length is prevented from being too long to interfere with other structures in the cylinder 10 and cause material waste.

[0038] The flooded evaporator 100 further comprises a second liquid baffle 30, and the cylinder 10 is provided with a liquid inlet 15 on the side away from the air outlet 14. Along the axial direction of the liquid inlet 15, the second liquid baffle 30 is located between the liquid inlet 15 and the axis of the cylinder 10. In this way, the liquid inlet 15 is used for the heat exchange medium to enter the chamber 11 from the outside, and the second liquid baffle 30 can prevent the flow rate of the heat exchange medium flowing into the chamber 11 from being too fast, prevent the problem of liquid splashing caused by impact of the heat exchange medium, and further prevent the liquid heat exchange medium from entering the air outlet 14.

[0039] In the embodiment, the cylinder 10 is connected with an air outlet pipe 17 and a liquid inlet pipe 18. The air outlet pipe 17 corresponds to the air outlet 14 and is at least partially coaxially arranged with the air outlet 14 and connected to the outside of the cylinder 10. The liquid inlet pipe 18 corresponds to the liquid inlet 15 and is at least partially coaxially arranged with the liquid inlet 15 and connected to the outside of the cylinder 10.

[0040] Preferably, the air outlet 14 is arranged at the top of the cylinder 10 in the direction of gravity and at the middle position in the axial direction of the cylinder 10, and the liquid inlet 15 is arranged at the bottom of the cylinder 10 in the direction of gravity and at the middle position in the axial direction of the cylinder 10.

[0041] The cylinder 10 is provided with a liquid inlet 15 on the side away from the air outlet 14, and further provided with a gas-liquid separator 40. The gas-liquid separator 40 is connected with the cylinder 10 and located between the liquid inlet 15 and the air outlet 14. Since the gas-liquid separator 40 is located between the liquid inlet 15 and the air outlet 14, the movement of the heat exchange medium towards the air outlet 14 will inevitably pass through the gas-liquid separator 40, thereby completing the gas-liquid separation action. The gas-liquid separator 40 can further ensure that no liquid heat exchange medium enters the compressor through the air outlet 14.

[0042] In a conventional refrigeration system, a gas-liquid separator 40 is arranged between the evaporator and the compressor. The utility model integrates the originally externally arranged gas-liquid separator 40 into the inside of the cylinder 10, so that the structure integration degree of the refrigeration system is higher and the occupied volume is smaller.

[0043] The gas-liquid separator 40 comprises a shell and a stopper. The stopper is arranged in the shell and can stop the movement of the liquid heat exchange medium from the side of the gas-liquid separator 40 close to the liquid inlet 15 to the side of the gas-liquid separator 40 close to the air outlet 14. In this way, the stopper can stop the movement of the liquid heat exchange medium, thereby realizing the function of gas-liquid separation.

[0044] In other embodiments, the gas-liquid separator 40 can also be provided as a gravity type gas-liquid separator 40 or a rotating type gas-liquid separator 40, etc., and is not limited to the above-mentioned filtering of the liquid heat exchange medium by the stopper.

[0045] Further, the stopper is provided as a wire mesh structure, thereby realizing stoppage filtering of the liquid state and preventing the passage of the liquid heat exchange medium. The wire mesh structure can be specifically provided as a wire mesh, a stainless steel wire mesh, etc., and the shell can be provided as a carbon steel frame structure. In other embodiments, the stopper can also be provided as a baffle plate with through holes, and multiple baffle plates are stacked and staggered, thereby realizing stoppage of the liquid heat exchange medium.

[0046] The cylinder body 10 comprises a main body 12 and end plates 13 connected to both ends of the main body 12, multiple fixing holes 131 are formed on both end plates 13, and the fixing holes 131 on both end plates 13 correspond to each other along the axial direction of the cylinder body 10, and the heat exchange pipes are arranged in the fixing holes 131. The contact area between the refrigerant in the multiple heat exchange pipes and the heat exchange medium in the cylinder body 10 is large, and the heat exchange efficiency is high. The two end plates 13 can also function to fix the heat exchange pipes.

[0047] Preferably, the shortest distance between the gas-liquid separator 40 and the fixing hole 131 is H, and 100mm≤H≤150mm is satisfied. In this way, when the heat exchange medium has problems such as liquid splashing towards the gas outlet 14, a part of the heat exchange medium can be removed by gravity in this distance section, and preliminary liquid removal is realized. Reasonably setting the height of H can prevent the height from being too low, which affects the gravity liquid removal effect, and also prevent H from being too high, which occupies too much internal space of the cylinder body 10.

[0048] For example, H is set to 110mm, 120mm, 133mm, 145mm, etc., and is not limited to the above-mentioned two end point values.

[0049] Compared with the prior art, the utility model reasonably sets the flow area of the flow-through opening 21 formed by cooperation between the first liquid stop plate 20 and the inner wall 16 of the cylinder body 10, so that the flow-through opening 21 will not be too small to cause insufficient flow of the heat exchange medium, thereby affecting the air intake of the compressor, and can also avoid that the flow-through opening 21 is too large, that is, the first liquid stop plate 20 is too far away from the gas outlet 14, thereby causing poor liquid stopping effect of the first liquid stop plate 20.

[0050] The technical features of the above-mentioned embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present application.

[0051] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A flooded evaporator, characterized in that, include: The cylinder (10) has an internal chamber (11) and an air outlet (14) is provided on the cylinder (10). The air outlet (14) is connected to the chamber (11) and the chamber (11) is used to carry the heat exchange medium. The first baffle plate (20) is connected to the inner wall (16) of the chamber (11) formed by the cylinder (10) and forms a flow port (21). Along the axial direction of the air outlet (14), the first baffle plate (20) is located between the axis of the air outlet (14) and the axis of the cylinder (10). Wherein, the area of ​​the flow port (21) is S1, and the flow area of ​​the air outlet (14) is S2, satisfying:

2. The flooded evaporator according to claim 1, characterized in that, The first baffle plate (20) extends along the axial direction of the cylinder (10), and both ends of the first baffle plate (20) are provided with the flow port (21).

3. The flooded evaporator according to claim 1, characterized in that, The first baffle plate (20) includes a first connecting section (22), a stop section (23), and a second connecting section (24). The first connecting section (22) and the second connecting section (24) are respectively connected to both sides of the stop section (23) and are set at an angle to the stop section (23). The side of the first connecting section (22) and the second connecting section (24) away from the stop section (23) are respectively connected to the inner wall (16).

4. The flooded evaporator according to any one of claims 1-3, characterized in that, Along the axial direction of the cylinder (10), the length of the first baffle plate (20) is L, and the diameter of the air outlet (14) is D, satisfying: 3D≤L≤4D.

5. The flooded evaporator according to claim 1, characterized in that, The flooded evaporator also includes a second baffle plate (30). The cylinder (10) has a liquid inlet (15) on the side away from the gas outlet (14). Along the axial direction of the liquid inlet (15), the second baffle plate (30) is located between the liquid inlet (15) and the axis of the cylinder (10).

6. The flooded evaporator according to any one of claims 1 or 5, characterized in that, The cylinder (10) has a liquid inlet (15) on the side away from the air outlet (14). The cylinder (10) is also provided with a gas-liquid separator (40), which is connected to the cylinder (10) and located between the liquid inlet (15) and the air outlet (14).

7. The flooded evaporator according to claim 6, characterized in that, The gas-liquid separator (40) includes a housing and a stop member. The stop member is disposed inside the housing and is capable of preventing the liquid heat exchange medium from moving from the side of the gas-liquid separator (40) near the liquid inlet (15) to the side of the gas-liquid separator (40) near the gas outlet (14).

8. The flooded evaporator according to claim 7, characterized in that, The stop component is configured as a wire mesh structure.

9. The flooded evaporator according to claim 6, characterized in that, The cylinder (10) includes a main body (12) and end plates (13). The end plates (13) are connected to both ends of the main body (12). Both end plates (13) have multiple fixing holes (131), and the fixing holes (131) on the two end plates (13) correspond one-to-one along the axial direction of the cylinder (10). Heat exchange tubes are inserted into the fixing holes (131).

10. The flooded evaporator according to claim 9, characterized in that, The shortest distance between the gas-liquid separator (40) and the fixing hole (131) is H, which satisfies: 100mm≤H≤150mm.

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