Flooded evaporator and water chilling unit

Abstract

The utility model discloses a flooded evaporator and a water chilling unit. The flooded evaporator comprises a shell, a heat exchange tube bundle, an airflow channel and a liquid stabilizing piece. The shell is provided with an accommodating cavity; the heat exchange tube bundle is located in the containing cavity and comprises a plurality of heat exchange tubes distributed at intervals. The airflow channel is formed in the containing cavity and provided with an exhaust opening located in the top end of the heat exchange tube bundle. And the liquid stabilizing piece is connected with the heat exchange tube bundle or / and the shell, and the liquid stabilizing piece is configured to shield at least part of the exhaust opening so as to prevent gas in the gas flow channel from being exhausted through the exhaust opening. The gas can be prevented from rising to the liquid level of the liquid refrigerant and impacting the liquid level to cause instability of the liquid level.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of evaporators, in particular to a flooded evaporator and a water chiller. BACKGROUND

[0002] The flooded evaporator is a kind of evaporator commonly used in water chillers. The flooded evaporator comprises a shell and a heat exchange tube bundle arranged in the shell. The heat exchange tube bundle is completely immersed in liquid refrigerant. The liquid refrigerant boils in the evaporator, and the gaseous refrigerant after heat absorption and evaporation escapes from the liquid surface and then returns to the compressor.

[0003] However, when the heat exchange tube bundle is installed in the shell, due to the need to reserve the baffle position for multi-flow or manufacturing deviation, etc., the pipe arrangement area where the heat exchange tube bundle is installed will inevitably have blank areas where the pipe cannot be arranged. The flow resistance of these blank areas is small, which will form an airflow channel for the gaseous refrigerant to flow. When the gaseous refrigerant rises to the liquid surface in the airflow channel, it will impact the liquid surface, causing the liquid surface to be unstable. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a flooded evaporator and a water chiller, which can prevent the gaseous refrigerant from rising to the liquid surface of the liquid refrigerant and impacting the liquid surface, thereby preventing the liquid surface from being unstable.

[0005] In a first aspect, the present application provides a flooded evaporator, comprising:

[0006] a shell having a receiving cavity;

[0007] a heat exchange tube bundle located in the receiving cavity, the heat exchange tube bundle comprising a plurality of heat exchange tubes arranged at intervals;

[0008] an airflow channel formed in the receiving cavity, the airflow channel having an exhaust opening located at the top end of the heat exchange tube bundle; and

[0009] a liquid stabilizing member connected to the heat exchange tube bundle and / or the shell, the liquid stabilizing member being configured to shield at least part of the exhaust opening to prevent the gas in the airflow channel from being discharged through the exhaust opening.

[0010] In some embodiments of the present application, the liquid stabilizing member is located above the exhaust opening; or the liquid stabilizing member is located in the airflow channel.

[0011] In some embodiments of the present application, the heat exchange tube bundle comprises a plurality of first heat exchange tube groups arranged at intervals along a first direction, the first direction being parallel to the horizontal direction and perpendicular to the axial direction of the shell, each first heat exchange tube group comprising a plurality of heat exchange tubes, and the airflow channel being formed between any two adjacent first heat exchange tube groups; or / and the airflow channel is formed between the outer edge of the heat exchange tube bundle and the inner side wall of the receiving cavity.

[0012] In some embodiments of the present application, the airflow passage formed between two adjacent groups of the first heat exchange pipe groups is a first airflow passage, and the liquid stabilizer shielding the exhaust opening of the first airflow passage is a first liquid stabilizer, and two sides of the first liquid stabilizer are connected with two groups of the first heat exchange pipe groups forming the first airflow passage, respectively.

[0013] In some embodiments of the present application, the first liquid stabilizer is located above the exhaust opening of the first airflow passage and covers the exhaust opening of the first airflow passage, the first liquid stabilizer comprises a first part and a second part, the first part and the second part are located above two groups of the first heat exchange pipe groups forming the first airflow passage, respectively, and are connected with the two groups of the first heat exchange pipe groups, respectively; wherein the first heat exchange pipe group comprises a plurality of rows of heat exchange pipe columns arranged along the first direction, each heat exchange pipe column comprises a plurality of heat exchange pipes arranged vertically, the projection of the first part on the horizontal plane covers the projection of at least one row of heat exchange pipe columns on the horizontal plane, and the projection of the second part on the horizontal plane covers the projection of at least one row of heat exchange pipe columns on the horizontal plane.

[0014] In some embodiments of the present application, the first liquid stabilizer is located in the first airflow passage, and the vertical length of the first liquid stabilizer is greater than 2 times the outer diameter of the heat exchange pipe.

[0015] In some embodiments of the present application, the first liquid stabilizer is located in the first airflow passage, the distance between two adjacent heat exchange pipes in the first heat exchange pipe group is d1, and the distance between the first liquid stabilizer and the passage wall of the first airflow passage is d2, d2 < d1.

[0016] In some embodiments of the present application, the airflow passage formed between the outer edge of the heat exchange pipe bundle and the inner side wall of the containing cavity is a second airflow passage, the liquid stabilizer shielding the exhaust opening of the second airflow passage is a second liquid stabilizer, and two sides of the second liquid stabilizer are connected with the heat exchange pipe bundle and the shell, respectively.

[0017] In some embodiments of the present application, the second liquid stabilizer is located above the exhaust opening of the second airflow passage and covers the exhaust opening of the second airflow passage, the second liquid stabilizer comprises a third part, the third part is located above the heat exchange pipe bundle and is connected with the heat exchange pipe bundle; wherein the heat exchange pipe bundle comprises a plurality of rows of heat exchange pipe columns arranged along the first direction, each heat exchange pipe column comprises a plurality of heat exchange pipes arranged vertically, and the projection of the third part on the horizontal plane covers the projection of at least one row of heat exchange pipe columns on the horizontal plane.

[0018] In some embodiments of the present application, the liquid stabilizer is located in the airflow passage, and the second liquid stabilizer is inserted into the heat exchange tube bundle at a side connected to the heat exchange tube bundle; wherein the heat exchange tube bundle comprises a plurality of heat exchange tube columns arranged along the first direction, each of the heat exchange tube columns comprises a plurality of heat exchange tubes arranged along the vertical direction, and the second liquid stabilizer comprises an insertion part inserted into the heat exchange tube bundle, and a projection of the insertion part on a horizontal plane covers a projection of at least one heat exchange tube column on the horizontal plane.

[0019] In some embodiments of the present application, the heat exchange tube bundle comprises a plurality of second heat exchange tube groups arranged along the vertical direction at intervals, each of the second heat exchange tube groups comprises a plurality of heat exchange tubes arranged at intervals, and a gas passage in communication with the airflow passage is formed between adjacent second heat exchange tube groups.

[0020] In some embodiments of the present application, a normal projection of the liquid stabilizer on a plane perpendicular to the axial direction of the shell is a vertically extending strip, a horizontally extending strip, a V shape, an inverted V shape, an M shape or a cap shape.

[0021] In a second aspect, the present application further provides a water chiller comprising a compressor, a condenser and the flooded evaporator according to any one of the above embodiments, wherein the compressor, the condenser and the flooded evaporator are sequentially connected to form a heat exchange loop.

[0022] The present application has the following beneficial effects: in the present application, the liquid stabilizer can prevent gaseous refrigerant and air and other gases from being discharged through the gas discharge opening, thereby preventing the gases from rising to the liquid level of the liquid refrigerant and impacting the liquid level to cause the liquid level to be unstable; in addition, the accumulation of the gases in the airflow passage can generate a large number of bubbles, and the liquid stabilizer can also prevent the bubbles from being discharged through the gas discharge opening, thereby preventing the bubbles from rising to the liquid level and breaking to cause the liquid level to be turbulent and unstable. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the following will briefly introduce the drawings needed to be used in the embodiments or the related art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0024] Figure 1 FIG. 1 is a structural schematic diagram of a flooded evaporator in an embodiment of the present application;

[0025] Figure 2 FIG. 2 is a structural schematic diagram of a flooded evaporator in another embodiment of the present application;

[0026] Figure 3A structure schematic diagram of a flooded evaporator in another embodiment of the present application;

[0027] Figure 4 A structure schematic diagram of a flooded evaporator in another embodiment of the present application;

[0028] Figure 5 A structure schematic diagram of a flooded evaporator in another embodiment of the present application;

[0029] Figure 6 A structure schematic diagram of a flooded evaporator in another embodiment of the present application;

[0030] Figure 7 A structure schematic diagram of a flooded evaporator in another embodiment of the present application.

[0031] Reference signs:

[0032] 10, shell; 11, containing cavity; 20, heat exchange tube bundle; 21, heat exchange tube; 22, first heat exchange tube group; 23, vertical row of heat exchange tubes; 24, second heat exchange tube group; 31, air flow channel; 311, exhaust opening; 32, first air flow channel; 33, second air flow channel; 41, liquid stabilizer; 42, first liquid stabilizer; 421, first part; 422, second part; 43, second liquid stabilizer; 431, third part; 432, insertion part; 50, air passage. DETAILED DESCRIPTION

[0033] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0034] The present application provides a flooded evaporator to solve the problem that, in the related art, when installing a heat exchange tube bundle in a shell of a flooded evaporator, due to reasons such as the need to reserve a baffle position for multiple processes or manufacturing deviations, the pipe arrangement area for installing the heat exchange tube bundle will inevitably have blank areas where the heat exchange tube cannot be arranged. The flow resistance of these blank areas is small, which will form an air flow channel for the flow of gaseous refrigerant. When the gaseous refrigerant rises to the liquid surface in the air flow channel, it will cause impact on the liquid surface, thereby causing the problem of unstable liquid surface.

[0035] In a first aspect, the present application provides a flooded evaporator, as shown in Figure 1 The flooded evaporator includes a shell 10, a heat exchange tube bundle 20, an air flow channel 31, and a liquid stabilizer 41.

[0036] The shell 10 has a containing cavity 11. The shell 10 can be cylindrical or substantially cylindrical, and the containing cavity 11 is used to place liquid refrigerant.

[0037] The heat exchange tube bundle 20 is located in the containing cavity 11, and the heat exchange tube bundle 20 includes a plurality of heat exchange tubes 21 distributed at intervals. The heat exchange tube bundle 20 is arranged in a tube arrangement area in the containing cavity 11. When a flooded evaporator is used, the heat exchange tube bundle 20 is immersed in liquid refrigerant. Heat is provided to the liquid refrigerant through the heat exchange tubes 21. Because there are gaps between the heat exchange tubes 21, gas such as gaseous refrigerant evaporated by absorbing heat and air in the liquid refrigerant can flow upward along the gaps to the liquid level of the liquid refrigerant. Because the heat exchange tubes 21 prevent the gas from rising, the gas rises slowly along the gaps, and it is difficult for the gas to impact the liquid level. Because the gaps are usually small, the gas bubbles are difficult to gather and rise through the gaps. Therefore, the liquid level can remain stable when the gas in the gas flow channel 31 rises to the liquid level along the gaps between the heat exchange tubes 21.

[0038] The gas flow channel 31 is formed in the containing cavity 11, and the gas flow channel 31 has an exhaust opening 311 at the top end of the heat exchange tube bundle 20. The gas flow channel 31 can be a blank area formed by a reserved baffle position or manufacturing deviation. The heat exchange tubes 21 are not arranged in the gas flow channel 31. The gas flow channel 31 can be a channel extending vertically or bending from the bottom end of the heat exchange tube bundle 20 to the top end of the heat exchange tube bundle 20.

[0039] The liquid stabilizing piece 41 is connected to the heat exchange tube bundle 20 and / or the shell 10. The liquid stabilizing piece 41 is configured to shield at least part of the exhaust opening 311 to prevent the gas in the gas flow channel 31 from being discharged through the exhaust opening 311.

[0040] It can be understood that, in the present application, the liquid stabilizing piece 41 can prevent gaseous refrigerant and gas such as air from being discharged through the exhaust opening 311, thereby preventing the gas from rising to the liquid level of the liquid refrigerant and impacting the liquid level to cause the liquid level to be unstable. In addition, the liquid stabilizing piece 41 can also prevent gas bubbles from being discharged through the exhaust opening 311, thereby preventing the gas bubbles from rising to the liquid level and breaking to cause the liquid level to be turbulent and unstable.

[0041] As shown in FIG. 1, Figure 1 In some embodiments, the liquid stabilizing piece 41 is located above the exhaust opening 311. The liquid stabilizing piece 41 can cover the exhaust opening 311 to close the exhaust opening 311, thereby better blocking the gas in the gas flow channel 31.

[0042] As shown in FIG. 1, Figure 2As shown in FIG. 1, in some embodiments of the present application, the liquid stabilizer 41 is arranged in the gas flow channel 31, so that the liquid stabilizer 41 can prevent the gas in the gas flow channel 31 from flowing to the gas discharge opening 311, thereby preventing the gas from rising and impacting the liquid surface, and the liquid stabilizer 41 can make the gas flow channel 31 narrower, increase the flow resistance of the gas flow channel 31, and prevent a large amount of gas bubbles from gathering in the gas flow channel 31 and flowing upward.

[0043] As shown in FIG. 1, in some embodiments of the present application, the heat exchange tube bundle 20 includes a plurality of first heat exchange tube groups 22 arranged in a first direction XX, the first direction XX is parallel to the horizontal direction and perpendicular to the axial direction of the shell 10, each first heat exchange tube group 22 includes a plurality of heat exchange tubes 21, and the gas flow channel 31 is formed between adjacent two first heat exchange tube groups 22. Figure 1 Figure 2 As shown in FIG. 1, in some embodiments of the present application, the heat exchange tube bundle 20 includes a plurality of first heat exchange tube groups 22 arranged in a first direction XX, the first direction XX is parallel to the horizontal direction and perpendicular to the axial direction of the shell 10, each first heat exchange tube group 22 includes a plurality of heat exchange tubes 21, and the gas flow channel 31 is formed between adjacent two first heat exchange tube groups 22.

[0044] As shown in FIG. 1, in some embodiments of the present application, the heat exchange tube bundle 20 includes a plurality of first heat exchange tube groups 22 arranged in a first direction XX, the first direction XX is parallel to the horizontal direction and perpendicular to the axial direction of the shell 10, each first heat exchange tube group 22 includes a plurality of heat exchange tubes 21, and the gas flow channel 31 is formed between adjacent two first heat exchange tube groups 22. Figure 3 Figure 4 As shown in FIG. 1, in some embodiments of the present application, the heat exchange tube bundle 20 includes a plurality of first heat exchange tube groups 22 arranged in a first direction XX, the first direction XX is parallel to the horizontal direction and perpendicular to the axial direction of the shell 10, each first heat exchange tube group 22 includes a plurality of heat exchange tubes 21, and the gas flow channel 31 is formed between adjacent two first heat exchange tube groups 22.

[0045] As shown in FIG. 1, in some embodiments of the present application, the heat exchange tube bundle 20 includes a plurality of first heat exchange tube groups 22 arranged in a first direction XX, the first direction XX is parallel to the horizontal direction and perpendicular to the axial direction of the shell 10, each first heat exchange tube group 22 includes a plurality of heat exchange tubes 21, and the gas flow channel 31 is formed between adjacent two first heat exchange tube groups 22.

[0046] As shown in FIG. 1, in some embodiments of the present application, the heat exchange tube bundle 20 includes a plurality of first heat exchange tube groups 22 arranged in a first direction XX, the first direction XX is parallel to the horizontal direction and perpendicular to the axial direction of the shell 10, each first heat exchange tube group 22 includes a plurality of heat exchange tubes 21, and the gas flow channel 31 is formed between adjacent two first heat exchange tube groups 22. Figure 1 Figure 2 ​​​As shown, the airflow passage 31 formed between two adjacent groups of first heat exchange pipe groups 22 is a first airflow passage 32, the liquid stabilizing piece 41 shielding the exhaust opening 311 of the first airflow passage 32 is a first liquid stabilizing piece 42, and the two sides of the first liquid stabilizing piece 42 are connected with the two groups of first heat exchange pipe groups 22 forming the first airflow passage 32 respectively, so that the first liquid stabilizing piece 42 can be more closely connected with the first heat exchange pipe group 22, reducing the gap between the first liquid stabilizing piece 42 and the first heat exchange pipe group 22, so as to seal the exhaust opening 311 of the first airflow passage 32, thereby achieving a better blocking effect on the gas in the airflow passage 31. The first airflow passage 32 can be provided with one, two or more.

[0047] As shown in Figure 1 The first liquid stabilizing piece 42 can be located above the exhaust opening 311 of the first airflow passage 32 and cover the exhaust opening 311 of the first airflow passage 32, and the first liquid stabilizing piece 42 includes a first portion 421 and a second portion 422, and the first portion 421 and the second portion 422 are located above the two groups of first heat exchange pipe groups 22 forming the first airflow passage 32 respectively and are connected with the two groups of first heat exchange pipe groups 22 respectively.

[0048] The first heat exchange pipe group 22 includes a plurality of heat exchange pipe columns 23 arranged in the first direction XX, and each heat exchange pipe column 23 includes a plurality of heat exchange pipes 21 arranged in the vertical direction. The projection of the first portion 421 on the horizontal plane covers the projection of at least one row of heat exchange pipe columns 23 on the horizontal plane, and the projection of the second portion 422 on the horizontal plane covers the projection of at least one row of heat exchange pipe columns 23 on the horizontal plane. It can be understood that the first liquid stabilizing piece 42 can be connected with the top layer of heat exchange pipes 21 in the first heat exchange pipe group 22, the first portion 421 and the second portion 422 are two edge portions of the first liquid stabilizing piece 42, and the first portion 421 and the second portion 422 both cover at least one row of heat exchange pipe columns 23, so as to ensure that the first liquid stabilizing piece 42 can seal the exhaust opening 311 of the first airflow passage 32, thereby achieving a better blocking effect on the gas in the first airflow passage 32.

[0049] The projection of the first portion 421 on the horizontal plane can cover the projection of 1-2 rows of heat exchange pipe columns 23 on the horizontal plane, and the projection of the second portion 422 on the horizontal plane can cover the projection of 1-2 rows of heat exchange pipe columns 23 on the horizontal plane.

[0050] As shown in Figure 2As shown, the first liquid stabilizer 42 can also be located in the first gas flow passage 32, and the vertical length of the first liquid stabilizer 42 is greater than 2 times the outer diameter of the heat exchange tube 21, so that the first liquid stabilizer 42 has sufficient length to better block the gas flowing to the exhaust opening 311 in the first gas flow passage 32. The vertical length of the first liquid stabilizer 42 can be 2.1 times, 2.5 times, 3 times or other multiples of the outer diameter of the heat exchange tube 21. The first liquid stabilizer 42 can extend from the first gas flow passage 32 to the exhaust opening 311, or the first liquid stabilizer 42 can be completely located in the first gas flow passage 32 and arranged close to the exhaust opening 311.

[0051] In some embodiments, the spacing between two adjacent heat exchange tubes 21 in the first heat exchange tube group 22 is d1, and the spacing between the first liquid stabilizer 42 and the passage wall of the first gas flow passage 32 is d2, d2 < d1. It can be understood that the passage wall of the first gas flow passage 32 is formed by the outer side of the plurality of heat exchange tubes 21 in the first heat exchange tube group 22, and the flow space formed between the first liquid stabilizer 42 and the passage wall of the first gas flow passage 32 is narrower than the gap between the heat exchange tubes 21, and the flow resistance of the gas passing through the flow space is greater, so that most of the gas rises to the liquid surface through the gap between the heat exchange tubes 21, reducing the gas rising through the exhaust opening 311, and preventing the liquid surface from being unstable due to the impact of a large amount of gas discharged from the exhaust opening 311. Wherein, d2 can be 0, at this time the first liquid stabilizer 42 is in contact with the passage wall of the first gas flow passage 32; of course, d2 can also be greater than 0, at this time there is a flow space between the first liquid stabilizer 42 and the passage wall of the first gas flow passage 32.

[0052] As shown in Figure 3 and Figure 4 The gas flow passage 31 formed between the outer edge of the heat exchange tube bundle 20 and the inner side wall of the containing cavity 11 is a second gas flow passage 33, and the liquid stabilizer 41 blocking the exhaust opening 311 of the second gas flow passage 33 is a second liquid stabilizer 4341, which is connected to the heat exchange tube bundle 20 and the shell 10 on both sides, and can close the exhaust opening 311 of the first gas flow passage 32, thereby better blocking the gas in the gas flow passage 31.

[0053] As shown in Figure 3 The second liquid stabilizer 4341 can be located above the exhaust opening 311 of the second gas flow passage 33 and cover the exhaust opening 311 of the second gas flow passage 33, and the second liquid stabilizer 4341 includes a third part 431 located above the heat exchange tube bundle 20 and connected to the heat exchange tube bundle 20.

[0054] The heat exchange tube bundle 20 includes multiple rows of vertical heat exchange tubes 23 arranged along a first direction XX. Each vertical heat exchange tube row 23 includes multiple vertically arranged heat exchange tubes 21. The projection of the third part 431 on the horizontal plane covers the projection of at least one row of vertical heat exchange tubes 23 on the horizontal plane. It is understood that the second liquid stabilizer 4341 can be connected to the top layer of heat exchange tubes 21 in the heat exchange tube bundle 20. The third part 431 is the edge portion of the second liquid stabilizer 4341, covering at least one row of vertical heat exchange tubes 23, ensuring that the second liquid stabilizer 4341 can seal the exhaust opening 311 of the second airflow channel 33, thereby providing a better blocking effect on the gas in the second airflow channel 33. The projection of the third part 431 on the horizontal plane can cover the projection of 1-2 rows of vertical heat exchange tubes 23 on the horizontal plane.

[0055] like Figure 4 As shown, the liquid stabilizer 41 is located in the airflow channel 31. The side of the second liquid stabilizer 4341 connected to the heat exchange tube bundle 20 is inserted into the heat exchange tube bundle 20. The second liquid stabilizer 4341 includes an insertion part 432 inserted into the heat exchange tube bundle 20. The projection of the insertion part 432 on the horizontal plane covers the projection of at least one row of vertical heat exchange tubes 23 on the horizontal plane, so as to ensure that the second liquid stabilizer 4341 can seal the exhaust opening 311 of the second airflow channel 33. The projection of the insertion part 432 on the horizontal plane can cover the projection of one to two rows of vertical heat exchange tubes 23 on the horizontal plane.

[0056] like Figure 5 As shown, in some embodiments, the heat exchange tube bundle 20 includes a plurality of second heat exchange tube groups 24 arranged vertically at intervals. Each second heat exchange tube group 24 includes a plurality of heat exchange tubes 21 distributed at intervals. Adjacent second heat exchange tube groups 24 form air passages 50 communicating with the airflow channel 31. The air passages 50 are formed inside the heat exchange tube bundle 20, allowing them to communicate with a large number of gaps. With the liquid stabilizer 41 provided to prevent gas from escaping through the exhaust opening 311, the gas in the airflow channel 31 can flow through the air passages 50 and be discharged through these gaps. The air passages 50 may consist of one, two, or more.

[0057] In some embodiments, the orthographic projection of the liquid stabilizer 41 onto a plane perpendicular to the axial direction of the housing 10 is an inverted V-shape (e.g., Figure 1 ), and vertically extending strips (such as Figure 2 ), and horizontally extending strips (such as Figure 3 and Figure 4 ), M-shaped (such as Figure 5 ), cap-shaped (such as Figure 6 ) or V-shaped (such as Figure 7), the liquid stabilizer 41 can be selected to have a proper shape according to the setting position of the liquid stabilizer 41 and the shape and size of the exhaust opening 311, so as to better prevent the gas in the gas flow channel 31 from being discharged through the exhaust opening 311. It should be further noted that when the first liquid stabilizer 42 and the second liquid stabilizer 4341 are provided simultaneously, the shape of the first liquid stabilizer 42 can be the same as or different from the shape of the second liquid stabilizer 4341.

[0058] In a second aspect, the application further provides a water chiller, comprising a compressor, a condenser and the flooded evaporator according to any one of the above embodiments, the compressor, the condenser and the falling film evaporator are sequentially connected to form a heat exchange loop.

[0059] The above only is the preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A flooded evaporator characterized by, The application relates to a heat exchange device, comprising: a shell having a containing cavity; a heat exchange tube bundle located in the containing cavity, the heat exchange tube bundle comprising a plurality of heat exchange tubes arranged at intervals; an airflow channel formed in the containing cavity, the airflow channel having an exhaust opening located at the top end of the heat exchange tube bundle; and a liquid stabilizer connected to the heat exchange tube bundle and / or the shell, the liquid stabilizer being configured to shield at least part of the exhaust opening to prevent gas in the airflow channel from being discharged through the exhaust opening. The liquid stabilizer is located above the exhaust opening; or the liquid stabilizer is located in the airflow channel.

2. The flooded evaporator of claim 1, wherein, The heat exchange tube bundle comprises a plurality of first heat exchange tube groups arranged at intervals along a first direction, the first direction being parallel to the horizontal direction and perpendicular to the axial direction of the shell, each of the first heat exchange tube groups comprising a plurality of heat exchange tubes, and the airflow channel being formed between two adjacent first heat exchange tube groups; or / and 3. The flooded evaporator of claim 1, wherein, The airflow channel is formed between the outer edge of the heat exchange tube bundle and the inner side wall of the containing cavity. The airflow channel formed between two adjacent first heat exchange tube groups is a first airflow channel, the liquid stabilizer shielding the exhaust opening of the first airflow channel is a first liquid stabilizer, and the two sides of the first liquid stabilizer are connected to the two first heat exchange tube groups forming the first airflow channel.

4. The flooded evaporator of claim 3, wherein, The first liquid stabilizer is located above the exhaust opening of the first airflow channel and covers the exhaust opening of the first airflow channel, the first liquid stabilizer comprising a first part and a second part, the first part and the second part being located above the two first heat exchange tube groups forming the first airflow channel and being connected to the two first heat exchange tube groups, respectively.

5. The flooded evaporator of claim 4, wherein, The first heat exchange tube group comprises a plurality of heat exchange tube columns arranged along the first direction, each of the heat exchange tube columns comprising a plurality of heat exchange tubes arranged vertically, the projection of the first part on a horizontal plane covers the projection of at least one heat exchange tube column on the horizontal plane, and the projection of the second part on the horizontal plane covers the projection of at least one heat exchange tube column on the horizontal plane. The first liquid stabilizer is located in the first airflow channel, and the vertical length of the first liquid stabilizer is greater than 2 times the outer diameter of the heat exchange tube.

6. The flooded evaporator of claim 4, wherein, The first liquid stabilizer is located in the first airflow channel, the distance between two adjacent heat exchange tubes in the first heat exchange tube group is d1, the distance between the first liquid stabilizer and the channel wall of the first airflow channel is d2, and d2 < d1.

7. The flooded evaporator of claim 4, wherein, The airflow channel formed between the outer edge of the heat exchange tube bundle and the inner side wall of the containing cavity is a second airflow channel, the liquid stabilizer shielding the exhaust opening of the second airflow channel is a second liquid stabilizer, and the two sides of the second liquid stabilizer are connected to the heat exchange tube bundle and the shell, respectively.

8. The flooded evaporator of claim 3, wherein, The second liquid stabilizer is located above the exhaust opening of the second airflow channel and covers the exhaust opening of the second airflow channel, the second liquid stabilizer comprising a third part, the third part being located above the heat exchange tube bundle and being connected to the heat exchange tube bundle.

9. The flooded evaporator of claim 8, wherein, ​ The heat exchange tube bundle comprises a plurality of heat exchange tube columns arranged along the first direction, each of the heat exchange tube columns comprises a plurality of heat exchange tubes arranged along a vertical direction, and a projection of the third part on a horizontal plane covers a projection of at least one of the heat exchange tube columns on the horizontal plane.

10. The flooded evaporator of claim 8, wherein, The liquid stabilizer is located in the airflow passage, and the second liquid stabilizer is inserted into the heat exchange tube bundle from a side connected with the heat exchange tube bundle. The heat exchange tube bundle comprises a plurality of heat exchange tube columns arranged along the first direction, each of the heat exchange tube columns comprises a plurality of heat exchange tubes arranged along a vertical direction, and the second liquid stabilizer comprises an insertion part inserted into the heat exchange tube bundle, and a projection of the insertion part on a horizontal plane covers a projection of at least one of the heat exchange tube columns on the horizontal plane.

11. The flooded evaporator of claim 1, wherein, The heat exchange tube bundle comprises a plurality of second heat exchange tube groups arranged along a vertical direction, each of the second heat exchange tube groups comprises a plurality of heat exchange tubes arranged at intervals, and a gas passage in communication with the airflow passage is formed between adjacent second heat exchange tube groups.

12. The flooded evaporator of claim 1, wherein, A projection of the liquid stabilizer on a plane perpendicular to an axial direction of the shell is a vertically extending strip, a horizontally extending strip, a V shape, an inverted V shape, an M shape or a cap shape.

13. A water chiller, characterized by, The full liquid evaporator comprises a compressor, a condenser and the full liquid evaporator according to any one of claims 1 to 12, the compressor, the condenser and the full liquid evaporator are sequentially communicated to form a heat exchange loop.

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