Heat exchanger shell structure, shell-and-tube heat exchanger and air conditioning device

Abstract

This invention provides a heat exchanger shell structure, a shell-and-tube heat exchanger, and an air conditioning device, relating to the field of heat exchanger technology. It solves the technical problem in existing traditional shell-and-tube heat exchanger structures where the refrigerant in contact with the shell does not undergo adequate heat exchange. The structure includes a shell body with an installation part for connecting to a water supply pipe. A water cavity structure is formed within the shell body, and a water-absorbing material is placed within the water cavity structure. Evaporation ports communicating with the water cavity structure are distributed on the outer surface of the shell body. By placing the water-absorbing material within the water cavity structure, when water is injected into the water cavity structure through the water supply pipe and the installation part, the water-absorbing material absorbs the moisture. Since the shell body has evaporation ports communicating with the water cavity structure, the moisture from the absorbent material evaporates through the evaporation ports, achieving heat exchange with the refrigerant in contact with the shell-and-tube heat exchanger shell, thereby further improving subcooling and increasing energy efficiency.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger technology, and in particular to a heat exchanger shell structure, a shell-and-tube heat exchanger, and an air conditioning device. Background Technology

[0002] Large-scale chiller units mostly use shell and tube heat exchangers. The operating environments of chiller units are often building basements and equipment rooms in ship hulls. For these locations, in addition to higher requirements for unit capacity and energy efficiency, there are also higher requirements for unit vibration and noise.

[0003] In order to improve heat dissipation, flooded condenser shell and tube systems are often used in water chillers. This means that refrigerant flows in the shell and tube and water circulates in the heat exchange tube. This allows the low-temperature water to absorb heat in the middle of the refrigerant, which can better utilize the heat exchange area, increase the subcooling, and further improve the capacity and energy efficiency.

[0004] The applicant has discovered that the prior art has at least the following technical problems:

[0005] 1) The refrigerant in contact with the shell of a traditional shell-and-tube heat exchanger does not undergo good heat exchange;

[0006] 2) Traditional shell-and-tube condensers require natural heat exchange and usually do not have sound insulation devices added to the outside of the shell, resulting in relatively large vibration and noise of the unit. Summary of the Invention

[0007] The purpose of this invention is to provide a heat exchanger shell structure, a shell-and-tube heat exchanger, and an air conditioning device, solving the technical problem that the refrigerant in contact with the shell in existing traditional shell-and-tube heat exchanger structures does not undergo adequate heat exchange. The various technical effects of the preferred solutions among the many technical solutions provided by this invention are detailed below.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] One objective of this invention is to provide a heat exchanger shell structure, comprising a shell body, wherein the shell body is provided with an installation part for connecting to a water supply pipeline, a water cavity structure is formed inside the shell body and a water-absorbing material is provided inside the water cavity structure, and evaporation ports communicating with the water cavity structure and the outside of the shell body are distributed on the outer side of the shell body.

[0010] Furthermore, the shell body is a double-layer shell structure, with an interlayer water cavity formed inside the shell body, and filling holes distributed on the shell body that connect the interlayer water cavity and the outside of the shell body, the interlayer water cavity and the filling holes forming the water cavity structure.

[0011] Furthermore, the filling hole is filled with an absorbent material.

[0012] Furthermore, the interlayer water cavity is filled with a water-absorbing sound-insulating material, and the water-absorbing material in the filling hole is in contact with or spaced from the sound-insulating material.

[0013] Furthermore, the sound insulation material is sound insulation gauze.

[0014] Furthermore, the absorbent material is absorbent gauze.

[0015] Furthermore, the heat exchanger shell structure also includes a water storage tank and a return water pipeline. The water storage tank is located below the shell body and is connected to the interlayer water cavity through a pipe. The return water pipeline connects the water storage tank and the mounting part, and a driving device is installed on the return water pipeline.

[0016] Furthermore, a liquid level sensor is installed in the water storage tank, and the liquid level sensor is connected to the controller. The liquid level sensor is used to detect the liquid level in the water storage tank.

[0017] Furthermore, the water supply pipeline is connected to the inlet of the heat exchanger, and a control valve is installed on the water supply pipeline.

[0018] Furthermore, the mounting part is a spray structure, and an assembly position is formed on the housing body, with the mounting part located at the assembly position.

[0019] Furthermore, the spray structure is disposed on the top of the housing body and extends along the length direction of the housing body.

[0020] Furthermore, the main body of the shell includes an inner shell, an outer shell, and a filling tube. The outer shell is sleeved on the outside of the inner shell, and the interlayer water cavity is formed between the inner shell and the outer shell. The filling tube is distributed on the outer shell, and the filling hole is formed inside the filling tube.

[0021] Furthermore, a vibration isolation structure is provided between the inner shell and the outer shell.

[0022] Furthermore, a refrigerant inlet pipe is provided at the top of the housing body, and a refrigerant outlet pipe is provided at the bottom of the housing body. Both the refrigerant inlet pipe and the refrigerant outlet pipe are connected to the interior of the housing body. A shell tube support base is also provided at the bottom of the housing body.

[0023] A second objective of this invention is to provide a shell-and-tube heat exchanger, including the aforementioned heat exchanger shell structure.

[0024] A third objective of this invention is to provide an air conditioning device, including the aforementioned shell-and-tube heat exchanger.

[0025] This invention provides a heat exchanger shell structure, specifically as follows: It includes a shell body, wherein the shell body is provided with an installation part for connection to a water supply pipe, a water cavity structure is formed inside the shell body, and a water-absorbing material is disposed within the water cavity structure. Evaporation ports connecting the water cavity structure and the outside of the shell body are distributed on the outer surface of the shell body. That is, by providing a water-absorbing material within the water cavity structure, when water is injected into the water cavity structure through the water supply pipe and the installation part, the water-absorbing material can absorb the moisture. Since the shell body has evaporation ports connecting to the water cavity structure, the moisture from the absorbent material can evaporate through the evaporation ports, achieving heat exchange with the refrigerant in contact with the shell of the shell-and-tube heat exchanger, thereby further improving subcooling and increasing energy efficiency.

[0026] The preferred technical solution of the present invention can also produce at least the following technical effects:

[0027] By filling the interlayer water cavity with sound-insulating material, the noise generated by the refrigerant and medium water flowing in the heat exchanger can be effectively reduced. At the same time, the sound-insulating material has the function of "locking in moisture". The water-absorbing material filled in the filling hole is in close contact with the sound-insulating material in the interlayer water cavity to ensure the moist effect of the water-absorbing material.

[0028] A vibration isolation structure is provided between the inner shell and the outer shell to reduce the impact of water flow and refrigerant on the vibration of the shell-and-tube heat exchanger.

[0029] By setting up a water storage tank and a return water pipeline, water can be supplied to the interlayer water cavity in a timely manner to ensure the moisturizing effect of the water-absorbing material and the sound insulation material. At the same time, the water level in the water storage tank can be observed to control whether water needs to be added to the shell body through the water supply pipeline. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a partial cross-sectional schematic diagram of the shell-and-tube heat exchanger provided in an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the shell-and-tube heat exchanger provided in an embodiment of the present invention.

[0033] In the diagram: 1-Installation section; 2-Jackblade water chamber; 3-Absorbent material; 4-Water storage tank; 5-Return water pipe; 6-Pipe; 7-Drive device; 8-Water supply pipe; 9-Control valve; 10-Level sensor; 11-Inner shell; 12-Outer shell; 13-Filling pipe; 14-Vibration isolation structure; 15-Refrigerant inlet pipe; 16-Refrigerant outlet pipe; 17-Shell and tube support base; 18-Condenser inlet; 19-Condenser outlet. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0035] In chiller units, flooded shell-and-tube condensers are often used to improve heat dissipation. This involves refrigerant flowing through the shell and tubes, while circulating water flows through the heat exchange tubes. This allows the low-temperature water to absorb heat in the middle of the refrigerant, better utilizing the heat exchange area to increase subcooling and further improve energy efficiency. However, in existing traditional shell-and-tube heat exchangers, the shell is a single-layer structure, and the refrigerant in contact with the shell does not undergo effective heat exchange. Therefore, this invention provides a heat exchanger shell structure, the specific structure of which is as follows:

[0036] The device includes a shell body, on which an installation part 1 for connection to a water supply pipe 8 is provided. A water cavity structure is formed within the shell body, and a water-absorbing material is placed within the water cavity structure. Evaporation ports connecting the water cavity structure and the outside of the shell body are distributed on the outer surface of the shell body. By placing a water-absorbing material within the water cavity structure, when water is injected into the water cavity structure through the water supply pipe 8 and the installation part 1, the water-absorbing material can absorb the moisture. Since the shell body has evaporation ports connecting to the water cavity structure, the moisture absorbed by the evaporating material can evaporate through the evaporation ports, achieving heat exchange with the refrigerant in contact with the shell of the shell-and-tube heat exchanger, thereby further improving subcooling and increasing energy efficiency.

[0037] Regarding the heat exchanger shell structure provided by the present invention, the following preferred embodiments are given, and the specific structure can be found in the following description.

[0038] Example 1:

[0039] This invention provides a heat exchanger shell structure, including a shell body with an installation part 1 for connection to a water supply pipe 8. A water cavity structure is formed within the shell body, and a water-absorbing material is disposed within the water cavity structure. Evaporation ports communicating with the water cavity structure and the outside of the shell body are distributed on the outer surface of the shell body. By providing a water-absorbing material within the water cavity structure, when water is injected into the water cavity structure through the water supply pipe 8 and the installation part 1, the water-absorbing material can absorb the moisture. Since the shell body has evaporation ports communicating with the water cavity structure, the moisture from the absorbent material can evaporate through the evaporation ports, achieving heat exchange with the refrigerant in contact with the shell-and-tube heat exchanger shell, thereby further improving subcooling and increasing energy efficiency.

[0040] The main body of the shell has a double-layer shell structure, with a sandwiched water cavity 2 formed inside the main body. Filling holes are distributed on the main body, connecting the sandwiched water cavity 2 and the outside of the main body. The sandwiched water cavity 2 and the filling holes form a water cavity structure. See also Figure 1 The diagram illustrates the structure of the main shell, which includes an inner shell 11, an outer shell 12, and filling tubes 13. The outer shell 12 is fitted over the inner shell 11, forming a sandwich water cavity 2 between the inner shell 11 and the outer shell 12. The filling tubes 13 are distributed on the outer shell 12, and filling holes are formed within the filling tubes 13. (See also...) Figure 1 The diagram illustrates several filling tubes 13 distributed on the outer casing 12, with an evaporation port formed on the side of the filling tube 13 away from the outer casing 12.

[0041] The filling hole is filled with absorbent material 3, which is tightly packed inside to minimize water leakage from the interlayer water cavity 2 due to excessive gaps. The absorbent material 3 can be absorbent gauze. The water in the interlayer water cavity 2 can wet the absorbent gauze filling the filling hole, and the moisture on the absorbent gauze can evaporate through the evaporation port.

[0042] Preferably, the interlayer water cavity 2 can be filled with a water-absorbing sound-insulating material, with the water-absorbing material 3 inside the filling hole in contact with or spaced from the sound-insulating material. The sound-insulating material can be sound-insulating gauze. By filling the interlayer water cavity 2 with sound-insulating material, the noise generated by the refrigerant and medium water flowing in the heat exchanger can be effectively reduced. At the same time, the sound-insulating material has the function of "locking in moisture," ensuring that the water-absorbing material 3 inside the filling hole is in close contact with the sound-insulating material inside the interlayer water cavity 2, thus guaranteeing the moisturizing effect of the water-absorbing material 3.

[0043] Regarding the mounting part 1, the mounting part 1 is preferably a spray structure, and an assembly position is formed on the housing body, with the mounting part 1 located at the assembly position. See also Figure 2 The diagram illustrates a spray structure mounted on the main body of the housing. Preferably, the spray structure is positioned at the top of the main body of the housing and extends along the length of the main body of the housing, so as to more evenly wet the sound insulation material in the interlayer water cavity 2, and to wet the water-absorbing material 3 distributed in the filling holes.

[0044] Regarding the spray structure, it has several spray holes distributed on it; an assembly hole (the assembly hole forms the above-mentioned assembly position) is provided on the outer shell 12 of the main body of the shell. The shape of the spray structure is arc-shaped, which matches the shape of the assembly hole and the outer shell 12, so that when the spray structure is assembled on the outer shell 12, the outer contour of the outer shell 12 is cylindrical.

[0045] Preferably, a vibration isolation structure 14 is provided between the inner housing 11 and the outer housing 12. See also Figure 1 The diagram illustrates the vibration isolation structure 14, which is annular and fixed between the inner shell 11 and the outer shell 12. Preferably, two vibration isolation structures 14 are symmetrically arranged between the inner shell 11 and the outer shell 12. The vibration isolation structure 14 reduces the impact of water flow and refrigerant on the vibration of the shell-and-tube heat exchanger.

[0046] Regarding the inner housing 11 and the outer housing 12, the inner housing 11 includes a left connecting flange, a right connecting flange, and a central cylindrical section, which connects the left connecting flange and the right connecting flange. (See [link to relevant documentation]). Figure 1 The left connecting flange is used to connect to the end cover on the left side of the heat exchanger, and the right connecting flange is used to connect to the end cover structure on the right side of the heat exchanger. The outer shell 12 is fitted onto the middle cylindrical part of the inner shell 11, and the two ends of the outer shell 12 are connected to the left connecting flange and the right connecting flange respectively, forming a sandwich water cavity 2 between the inner shell 11 and the outer shell 12.

[0047] See Figure 2 A refrigerant inlet pipe 15 is provided at the top of the main body of the casing, and a refrigerant outlet pipe 16 is provided at the bottom of the main body of the casing. Both the refrigerant inlet pipe 15 and the refrigerant outlet pipe 16 are connected to the interior of the main body of the casing (inner casing 11). A casing pipe support base 17 is also provided at the bottom of the main body of the casing. See also Figure 2 The diagram shows the refrigerant discharge pipe 16, which has a discharge port located in the middle.

[0048] Example 2:

[0049] Unlike Example 1, see [link to example]. Figure 1The heat exchanger shell structure also includes a water storage tank 4 and a return water pipe 5. The water storage tank 4 is located below the main shell and is connected to the interlayer water cavity 2 via a pipe 6. The return water pipe 5 connects the water storage tank 4 and the mounting part 1, and a drive device 7, which is a drive pump, is installed on the return water pipe 5. Water in the interlayer water cavity 2 flows into the water storage tank 4 through the pipe 6 under the action of gravity. Activating the drive device 7 drives the water in the water storage tank 4 to flow back to the mounting part 1 through the return water pipe 5. By setting up the water storage tank 4 and the return water pipe 5, water can be supplied to the interlayer water cavity 2 in a timely manner to ensure the wetting effect of the water-absorbing material 3 and the sound-insulating material. At the same time, the water level in the water storage tank 4 can be observed to control whether water needs to be replenished into the main shell through the water supply pipe 8.

[0050] A liquid level sensor 10 is installed inside the water storage tank 4. The liquid level sensor 10 is connected to the controller and is used to detect the liquid level in the water storage tank 4. As the water in the absorbent material 3 continuously evaporates, the water level in the water storage tank 4 will decrease during use. The liquid level sensor 10 detects the liquid level in the water storage tank 4. When the liquid level in the water storage tank 4 is low, it can control the supply of water to the main body of the shell through the water supply pipe 8. When the liquid level sensor 10 detects that the liquid level in the water storage tank 4 has reached the preset height value, it controls the stop of water supply through the water supply pipe 8.

[0051] The water supply pipe 8 is preferably connected to the inlet of the heat exchanger, and a control valve 9 is installed on the water supply pipe 8. (See also...) Figure 1 This shows that the water supply pipe 8 is connected to the condenser inlet 18. When water needs to be supplied to the main body of the casing through the water supply pipe 8, the control valve 9 is opened; when water supply pipe 8 does not need to supply water to the main body of the casing, the control valve 9 is closed.

[0052] Example 3:

[0053] A shell-and-tube heat exchanger includes the heat exchanger shell structure provided in Embodiment 1 or Embodiment 2 of the present invention.

[0054] Regarding the shell-and-tube heat exchanger in this embodiment, its shell structure has been described in detail in Embodiments 1 and 2, and will not be elaborated here.

[0055] Example 4:

[0056] An air conditioning device includes the shell-and-tube heat exchanger provided in Embodiment 3 of the present invention.

[0057] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A heat exchanger shell structure, characterized in that, Including the main body of the shell, wherein, The shell body is provided with an installation part (1) for connecting to the water supply pipe (8), a water cavity structure is formed inside the shell body and a water-absorbing material (3) is provided inside the water cavity structure, and an evaporation port connecting the water cavity structure and the outside of the shell body is distributed on the outer side of the shell body; The shell body is a double-layer shell structure. A sandwich water cavity (2) is formed inside the shell body. Filling holes that connect the sandwich water cavity (2) and the outside of the shell body are distributed on the shell body. The sandwich water cavity (2) and the filling holes form the water cavity structure.

2. The heat exchanger shell structure according to claim 1, characterized in that, The filling hole is filled with absorbent material (3).

3. The heat exchanger shell structure according to claim 2, characterized in that, The interlayer water cavity (2) is filled with water-absorbing sound insulation material, and the water-absorbing material (3) in the filling hole is in contact with or separated from the sound insulation material.

4. The heat exchanger shell structure according to claim 3, characterized in that, The sound insulation material is sound insulation gauze.

5. The heat exchanger shell structure according to claim 1, characterized in that, The absorbent material (3) is absorbent gauze.

6. The heat exchanger shell structure according to any one of claims 1-5, characterized in that, The heat exchanger shell structure also includes a water storage tank (4) and a return water pipe (5). The water storage tank (4) is located below the shell body and is connected to the interlayer water cavity (2) through a pipe (6). The return water pipe (5) connects the water storage tank (4) and the mounting part (1). A drive device (7) is provided on the return water pipe (5).

7. The heat exchanger shell structure according to claim 6, characterized in that, A liquid level sensor (10) is installed in the water storage tank (4). The liquid level sensor (10) is connected to the controller. The liquid level sensor (10) is used to detect the liquid level in the water storage tank (4).

8. The heat exchanger shell structure according to claim 6, characterized in that, The water supply pipeline (8) is connected to the inlet of the heat exchanger, and a control valve (9) is installed on the water supply pipeline (8).

9. The heat exchanger shell structure according to any one of claims 1-5, characterized in that, The mounting part (1) is a spray structure, and an assembly position is formed on the main body of the housing. The mounting part (1) is located at the assembly position.

10. The heat exchanger shell structure according to claim 9, characterized in that, The spray structure is disposed on the top of the housing body and extends along the length of the housing body.

11. The heat exchanger shell structure according to any one of claims 1-5, characterized in that, The main body of the shell includes an inner shell (11), an outer shell (12) and a filling tube (13). The outer shell (12) is sleeved on the outside of the inner shell (11). The interlayer water cavity (2) is formed between the inner shell (11) and the outer shell (12). The filling tube (13) is distributed on the outer shell (12), and the filling hole is formed inside the filling tube (13).

12. The heat exchanger shell structure according to claim 11, characterized in that, A vibration isolation structure (14) is provided between the inner shell (11) and the outer shell (12).

13. The heat exchanger shell structure according to claim 11, characterized in that, A refrigerant inlet pipe (15) is provided at the top of the housing body, and a refrigerant outlet pipe (16) is provided at the bottom of the housing body. Both the refrigerant inlet pipe (15) and the refrigerant outlet pipe (16) are connected to the interior of the housing body. A shell tube support base (17) is also provided at the bottom of the housing body.

14. A shell-and-tube heat exchanger, characterized in that, The heat exchanger shell structure includes any one of claims 1-13.

15. An air conditioning device, characterized in that, Includes the shell-and-tube heat exchanger as described in claim 14.

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