Heat exchanger

Abstract

The heat exchange machine comprises a heat exchange machine shell, a heat exchanger, a cold liquid pipeline and a hot liquid pipeline, the heat exchanger is arranged in the heat exchange machine shell, the heat exchanger is provided with a hot liquid inlet, a hot liquid outlet, a cold liquid inlet and a cold liquid outlet, the cold liquid pipeline comprises a liquid inlet pipe and a liquid outlet pipe, and the liquid inlet pipe is connected with the heat exchanger through the cold liquid inlet; the liquid outlet pipe is connected with the heat exchanger through the cold liquid outlet, the hot liquid pipeline is partially arranged in the heat exchanger, the two ends of the hot liquid pipeline extend outwards in the opening direction of the hot liquid inlet and the opening direction of the hot liquid outlet respectively, heat exchange is carried out in the heat exchanger through the cold liquid pipeline and the hot liquid pipeline, the heat exchange process is simplified, and meanwhile the heat exchanger is compact in structure and low in cost. And the heat exchanger is integrated in the heat exchanger shell, integrated installation with other hydraulic systems is facilitated, and operation and arrangement are convenient.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation, and in particular to a heat exchanger. Background Technology

[0002] Hot fluids, such as hydraulic oil in certain mechanical or lubrication systems, flow out of production equipment or processes. These hot fluids carry a large amount of heat, and direct flow of high-temperature hot fluids into hydraulic equipment can easily lead to equipment failure. Relying on natural cooling is ineffective and affects subsequent processes. Therefore, it is necessary to pre-cool the hot fluids to meet the requirements of subsequent processes or equipment operating conditions.

[0003] The existing CN205895774U discloses a hydraulic oil cooling device, which includes multiple components such as a compressor, condenser, receiver, expansion valve, and air-cooled cooler. Pre-cooling is required before use, and its operation involves multiple complex processes including energy conversion and media circulation, consuming not only time and energy but also affecting the smooth progress of subsequent processes. Furthermore, the integration of numerous components within a chassis results in a large device size, increases the difficulty and frequency of subsequent maintenance, and makes connection and use inconvenient. Utility Model Content

[0004] This application aims to address at least one of the technical problems existing in the prior art.

[0005] This application provides a heat exchanger, which includes a heat exchanger housing, a heat exchanger, a cold liquid pipeline, and a hot liquid pipeline. The heat exchanger is disposed inside the heat exchanger housing and has a hot liquid inlet, a hot liquid outlet, a cold liquid inlet, and a cold liquid outlet. The cold liquid pipeline includes an inlet pipe and an outlet pipe. The inlet pipe is connected to the heat exchanger through the cold liquid inlet, and the outlet pipe is connected to the heat exchanger through the cold liquid outlet. The hot liquid pipeline is at least partially disposed inside the heat exchanger, and both ends of the hot liquid pipeline extend outward from the heat exchanger through the openings of the hot liquid inlet and the hot liquid outlet, respectively.

[0006] The heat exchanger provided by this utility model has at least the following beneficial effects: heat exchange occurs within the heat exchanger via cold liquid and hot liquid pipelines, enabling more efficient heat transfer, improving heat exchange efficiency, and simplifying the heat exchange process. Furthermore, the heat exchanger has a compact structure, integrated within the heat exchanger housing, facilitating integration and installation with other hydraulic systems, and making operation and layout convenient.

[0007] According to some technical solutions of this application, the heat exchanger further includes a liquid pump disposed within the heat exchanger casing. The liquid pump is connected to the hot liquid pipeline and is located at the inlet end of the hot liquid pipeline. This enhances the flowability of the hot liquid in the pipeline and ensures that the hot liquid can enter the heat exchanger stably and sufficiently, thus helping to improve heat exchange efficiency.

[0008] According to some technical solutions of this application, the heat exchanger includes a heat exchange shell, within which a heat exchange zone is enclosed. The hot liquid pipeline is at least partially located within the heat exchange zone, and the hot liquid inlet, hot liquid outlet, cold liquid inlet, and cold liquid outlet are all located on the heat exchange shell. This facilitates the full transfer of heat and further improves heat exchange efficiency.

[0009] According to some technical solutions of this application, the hydrothermal pipeline located within the heat exchange zone extends in a serpentine, tortuous manner along the length of the heat exchange shell. This not only increases the contact area between the hydrothermal and cold liquids but also extends the duration of heat exchange, resulting in more thorough heat exchange and significantly improved heat exchange efficiency.

[0010] According to some technical solutions of this application, the heat exchanger housing is provided with an inspection door, and both the inspection door and the heat exchanger housing are provided with multiple heat dissipation holes. The inspection door facilitates the inspection and maintenance of internal components, while the heat dissipation holes allow heat generated inside the housing to dissipate, maintaining the internal temperature within a suitable range.

[0011] According to some technical solutions of this application, the liquid inlet pipe is further provided with a first pressure detection component, which is used to check the pressure of the liquid in the liquid inlet pipe to ensure the stability of the cold liquid supply.

[0012] According to some technical solutions of this application, a detection component is provided at the outlet end of the hydrothermal pipeline. The detection component includes: a temperature detection component for detecting the temperature of the liquid after heat exchange; and a second pressure detection component for detecting the liquid pressure inside the hydrothermal pipeline. By setting up the corresponding detection components, potential problems in the pipeline can be detected in a timely manner, ensuring the safe and stable operation of the equipment.

[0013] According to some technical solutions of this application, a display screen is provided on the outside of the heat exchanger casing. The display screen is electrically connected to the first pressure detection component and the second pressure detection component, respectively, and is used to display the liquid pressure of the cold liquid pipeline and the hot liquid pipeline. This allows for convenient understanding of the equipment's operating status and improves the efficiency of equipment operation and management.

[0014] According to some technical solutions of this application, the inlet and outlet ends of the cold liquid pipeline and the inlet and outlet ends of the hot liquid pipeline all extend outward along the direction of the heat exchanger casing, and a switch valve is provided on each of the outwardly extending pipelines.

[0015] According to some technical solutions of this application, a plurality of outlet ports are provided on one side of the heat exchanger casing, and the inlet and outlet ends of the cold liquid pipeline and the inlet and outlet ends of the hot liquid pipeline extend outward along the opening direction of the outlet ports. This facilitates connection with external cold liquid sources, hot liquid sources, and other equipment.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a structural diagram of a heat exchanger provided in an embodiment of this application;

[0019] Figure 2 A top view of the heat exchanger provided in an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of the internal structure of a heat exchanger provided in an embodiment of this application;

[0021] Figure 4 This is a schematic diagram of the internal structure of a heat exchanger provided in an embodiment of this application;

[0022] Figure 5 This is a schematic diagram of a heat exchanger structure provided in an embodiment of this application.

[0023] In the attached diagram: 100 - Heat exchanger casing; 200 - Heat exchanger; 300 - Cold liquid pipeline; 400 - Hot liquid pipeline; 500 - Pump; 600 - First pressure detection component; 700 - Second pressure detection component; 800 - Switch valve; 900 - Display screen; 110 - Inspection door; 120 - Heat dissipation hole; 130 - Outlet pipe; 210 - Hot liquid inlet; 220 - Hot liquid outlet; 230 - Cold liquid inlet; 240 - Cold liquid outlet; 250 - Heat exchanger shell; 310 - Liquid inlet pipe; 320 - Liquid outlet pipe; Detailed Implementation

[0024] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0025] In the description of this application, it should be understood that the terms "first," "second," etc., 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. Regarding directional descriptions, such as "up," "down," "front," "back," "left," and "right," the directions or positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this application. In the description of this utility model, unless otherwise expressly limited, terms such as "set," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] The following is combined with Figures 1 to 5 The embodiments of this application are described below.

[0027] Based on the above, this application provides a heat exchanger, which includes a heat exchanger housing 100, a heat exchanger 200, a cold liquid pipeline 300, and a hot liquid pipeline 400.

[0028] The heat exchanger 200 is located inside the heat exchanger housing 100, and the heat exchanger 200 has a hot liquid inlet 210, a hot liquid outlet 220, a cold liquid inlet 230 and a cold liquid outlet 240.

[0029] The cold liquid pipeline 300 includes an inlet pipe 310 and an outlet pipe 320. The inlet pipe 310 is connected to the heat exchanger 200 through the cold liquid inlet 230, and the outlet pipe 320 is connected to the heat exchanger 200 through the cold liquid outlet 240. The hot liquid pipeline 400 is at least partially disposed inside the heat exchanger 200, and both ends of the hot liquid pipeline 400 extend outward from the heat exchanger 200 through the opening directions of the hot liquid inlet 210 and the hot liquid outlet 220, respectively.

[0030] Specifically, cold water can be used as the cooling medium. An external cold water source is supplied to the cold liquid pipe of the heat exchanger 200, and the cold water flows within the heat exchanger 200. Hot liquid, such as high-temperature hydraulic oil, flows out from production equipment or the process flow, carrying a large amount of heat. This hot liquid is introduced through the hot liquid pipe 400, flowing in from the inlet end of the hot liquid pipe 400 and then into the hot liquid pipe 400 inside the heat exchanger 200. Alternatively, other liquid cooling media can be selected as needed.

[0031] When the hot liquid flows through the hot liquid pipe 400 within the heat exchanger 200, it exchanges heat with the cold liquid entering the heat exchanger 200 through the cold liquid pipe 300. The cold liquid enters the heat exchanger 200 from the inlet pipe 310 via the cold liquid inlet 230. After completing the heat exchange with the hot liquid pipe 400, it flows out from the outlet pipe 320 via the cold liquid outlet 240. The heat of the hot liquid is transferred to the cold water outside the heat exchanger 200 through the wall of the hot liquid pipe 400 to dissipate the heat and lower its own temperature. After cooling, it flows out of the hot liquid pipe 400 from the hot liquid outlet 220, thus obtaining a liquid that meets the temperature requirements of subsequent processes and can be returned to the production equipment or process flow to quickly participate in the subsequent production process.

[0032] In actual installation, the number of heat exchangers 200 can be set on the pipeline according to temperature requirements; for example, two or three can be set sequentially. In this way, when needed, the heat exchangers can be directly connected to the corresponding pipelines to achieve efficient, stable, and safe operation in complex industrial environments, while significantly reducing maintenance costs and energy consumption.

[0033] Optionally, the direction of the liquid flow can be reversed, allowing the liquid within the heat exchanger 200 to flow in opposite directions. This counter-current flow of hot and cold liquid maximizes the utilization of the temperature difference and improves heat exchange efficiency. Heat is transferred from the hot fluid to the cold fluid, exchanging heat with the hot fluid within the heat exchanger 200 and absorbing the heat transferred from the hot fluid, thus increasing its own temperature. After heat exchange with the hot fluid, the heated water flows out from the cold liquid outlet 240 of the heat exchanger 200, returning to a cooling system such as a cooling pool or other cooling method for further cooling to lower the water temperature, before circulating back into the heat exchanger 200 for continued use. This ensures a cyclical and orderly heat exchange process, guaranteeing efficient heat transfer between the hot and cold liquids and achieving rapid temperature regulation.

[0034] Therefore, the heat exchange process is simplified by using the cold liquid pipeline 300 and the hot liquid pipeline 400 within the heat exchanger 200, meeting basic heat exchange and cooling requirements. Under the same cooling requirements, the rapid completion of the cooling process reduces downtime on the production line, improving the continuity and efficiency of the entire production process. Simultaneously, the heat exchanger has a compact structure, integrated within the heat exchanger housing 100, facilitating integration and connection with other hydraulic systems. It also allows for easy selection of different cold and hot liquids or adjustment of the flow direction according to different operating conditions, making it convenient for actual operation and layout.

[0035] To enhance the flowability of the hydrothermal fluid in the pipeline, in some embodiments, the heat exchanger further includes a pump 500 disposed within the heat exchanger housing 100. The pump 500 is connected to the hydrothermal pipeline 400 and located at the inlet end of the hydrothermal pipeline 400. After the pump 500 starts, it draws the hydrothermal fluid from the hydrothermal source and delivers it to the hydrothermal pipeline 400, allowing it to flow within the pipeline and enter the heat exchanger 200 for heat exchange. This enhances the flowability of the hydrothermal fluid in the pipeline and ensures a stable and sufficient flow of the hydrothermal fluid into the heat exchanger 200, contributing to improved heat exchange efficiency. Especially when the natural pressure is insufficient when the hydrothermal fluid enters the hydrothermal pipeline 400, it ensures the continuous and stable operation of the heat exchange process.

[0036] In some embodiments, the heat exchanger 200 includes a heat exchange shell 250, within which a heat exchange zone is enclosed. A hot liquid pipeline 400 is at least partially disposed within the heat exchange zone. A hot liquid inlet 210, a hot liquid outlet 220, a cold liquid inlet 230, and a cold liquid outlet 240 are all located on the heat exchange shell 250. Hot liquid enters the heat exchange zone through the hot liquid inlet 210 and flows within the hot liquid pipeline 400. Cold liquid enters the heat exchange zone through the cold liquid inlet 230 and flows around the hot liquid pipeline 400. Heat exchange occurs between the two liquids through their respective pipeline walls. After the heat exchange, the cooled hot liquid flows out through the hot liquid outlet 220, and the heated cold liquid flows out through the cold liquid outlet 240. By concentrating the heat exchange area within the heat exchange shell 250, the heat exchange process is more concentrated and efficient, facilitating the full transfer of heat. In order to enhance the heat transfer effect, fins, turbulence-inducing parts, etc. can be provided on the inner wall of the heat exchange shell 250 of the heat exchanger 200 to increase the turbulent fluid and improve the heat transfer coefficient.

[0037] Furthermore, to increase the flow path and contact area of ​​the hot liquid within the heat exchange zone, the hot liquid pipe 400, located within the heat exchange zone, extends in a serpentine pattern along the length of the heat exchange shell. For example, the hot liquid pipe 400 has multiple bends along the length of the heat exchange shell, bending 6-10 times axially within the heat exchanger 200 in a similar serpentine pattern. This not only increases the contact area between the hot and cold liquids but also ensures that the cold water fully contacts the outer wall of the hot liquid pipe 400, resulting in more thorough heat exchange and significantly improved heat exchange efficiency. Compared to straight pipes, the serpentine pipe extends the flow path of the hot liquid within the limited space of the heat exchange shell 250, thereby achieving better heat transfer.

[0038] In some embodiments, when the heat exchanger requires maintenance or displays an abnormality, an inspection door 110 is provided on the heat exchanger casing 100. This allows for easy access to inspect, repair, and replace internal components. When not in use, the inspection door 110 is closed to prevent interference with internal components or piping, thus helping to protect the internal components from damage.

[0039] During heat exchange within the heat exchanger 200, the outer wall and other parts of the heat exchanger 200 also heat up due to heat transfer. The hot liquid itself has a high temperature, and during its flow, heat is dissipated through the walls of the hot liquid pipe 400 to the internal environment of the heat exchanger housing. Simultaneously, the pump 500 also dissipates heat during operation. Therefore, in some embodiments, the inspection door 110 and the heat exchanger housing 100 are each provided with multiple heat dissipation holes 120. External air flows in naturally due to the thermal pressure difference and then exits through the heat dissipation holes 120 on the other side. The heat dissipation holes 120 dissipate the heat generated inside the housing, maintaining the temperature inside the heat exchanger housing 100 within a suitable range. This prevents the temperature inside the heat exchanger housing 100 from becoming too high, thus preventing any impact on the heat dissipation effect of the heat exchanger 200 and ensuring stable heat exchange operation of the heat exchange equipment.

[0040] Optionally, the heat exchanger housing 100 has multiple outlet ports 130 on one side. The inlet and outlet ends of the cold liquid pipeline 300 and the inlet and outlet ends of the hot liquid pipeline 400 extend outward from the heat exchanger housing 100 along the opening direction of the outlet ports 130. This allows the extended pipelines to be easily connected to external cold liquid sources, hot liquid sources, and other equipment. Simultaneously, it helps protect the extended pipelines within the housing from interference.

[0041] To ensure the stability of the coolant supply, in some embodiments, a first pressure detection component 600 is also provided on the inlet pipe 310. The first pressure detection component 600 is used to detect the pressure of the liquid in the inlet pipe 310. The first pressure detection component 600 monitors the pressure of the coolant in the inlet pipe 310 in real time and can be configured with other components in actual use to provide real-time feedback of relevant pressure data, so as to understand the corresponding supply status of the coolant pipeline 300 in a timely manner, facilitate the judgment of whether there are problems such as blockage or leakage in the coolant pipeline 300, and further ensure the normal operation of the heat exchanger heat exchange process.

[0042] Similarly, in some embodiments, a detection component is provided at the outlet end of the hydrothermal pipe 400. This detection component includes a temperature detection component for detecting the temperature of the liquid after heat exchange; it may also include a second pressure detection component 700 for detecting the liquid pressure within the hydrothermal pipe 400. This facilitates subsequent configuration to provide feedback of temperature and pressure data.

[0043] Furthermore, a display screen 900 is provided on the outside of the heat exchanger housing. The display screen 900 is electrically connected to the first pressure detection component 600, the second pressure detection component 700, and the temperature data. It is used to display the liquid pressure of the cold liquid pipeline 300 and the hot liquid pipeline 400 after subsequent configuration. The corresponding detection components can be temperature sensors and pressure sensors. On the one hand, it can promptly understand the effect of heat exchange and determine whether the heat exchange has reached the expected temperature target, so as to make timely adjustments to the equipment in the heat exchanger 200. On the other hand, it can prevent the normal operation of the equipment from being affected by excessively high or low pipeline pressure, promptly detect potential problems in the corresponding pipelines, and ensure the safe and stable operation of the equipment. Those skilled in the art can also set other detection components or sensors according to needs. The specific configuration method is not an improvement of this application. Existing components can be used as needed. The specific principle will not be described here.

[0044] To ensure effective cooling, the circulating chilled water needs to maintain a certain flow rate and velocity. Too low a flow rate will result in poor heat exchange, while too high a flow rate may increase flow resistance and energy consumption. Therefore, it is necessary to adjust the chilled water flow rate and velocity appropriately. For convenient control of the liquid in the pipelines, the inlet and outlet ends of the chilled liquid pipeline 300, and the inlet and outlet ends of the hot liquid pipeline 400, all extend outwards from the heat exchanger casing. Each of these outwardly extending pipelines is equipped with a switching valve 800.

[0045] For example, the on / off valve 800 can also be replaced with an existing speed control valve, which can control the flow rate of coolant and hot liquid according to actual needs. When the heat load is large, rotating the corresponding speed control valve can appropriately increase the coolant flow rate, thereby optimizing the heat exchange process during equipment operation. This enhances the cooling effect and reduces the temperature of the heat exchanger 200. Alternatively, the liquid flow can be directly cut off by closing the corresponding on / off valve 800, which is convenient to operate and ensures safety.

[0046] Furthermore, certain terms in this specification have been used to describe embodiments of this specification. For example, "an embodiment," "an embodiment," and / or "some embodiments" mean that a particular feature, structure, or characteristic described in connection with that embodiment may be included in at least one embodiment of this specification. Therefore, it is to be emphasized and understood that two or more references to "an embodiment" or "an embodiment" in various parts of this specification do not necessarily refer to the same embodiment. Moreover, specific features, structures, or characteristics may be appropriately combined in one or more embodiments of this specification.

[0047] The preferred embodiments of this application have been described in detail above, but this application is not limited to the embodiments described. Without departing from the spirit and scope of this specification, those skilled in the art can make equivalent modifications or alternative configurations based on the embodiments in this specification to implement the application in this specification. These equivalent modifications or alternatives are all included within the scope defined by the claims of this application.

Claims

1. A heat exchanger, characterized in that: include: Heat exchanger casing; A heat exchanger, wherein the heat exchanger is disposed within the heat exchanger housing, and the heat exchanger has a hot liquid inlet, a hot liquid outlet, a cold liquid inlet, and a cold liquid outlet; The cold liquid pipeline includes an inlet pipe and an outlet pipe. The inlet pipe is connected to the heat exchanger through the cold liquid inlet, and the outlet pipe is connected to the heat exchanger through the cold liquid outlet. A hydrothermal pipeline, at least partially disposed within the heat exchanger, with both ends of the hydrothermal pipeline extending outward from the heat exchanger through openings at the hydrothermal inlet and the hydrothermal outlet, respectively.

2. The heat exchanger according to claim 1, characterized in that: It also includes a liquid pump installed inside the heat exchanger housing, the liquid pump being connected to the hot liquid pipeline and located at the liquid inlet end of the hot liquid pipeline.

3. The heat exchanger according to claim 1, characterized in that: The heat exchanger includes a heat exchange shell, within which a heat exchange zone is enclosed. The hot liquid pipeline is at least partially located within the heat exchange zone. The hot liquid inlet, the hot liquid outlet, the cold liquid inlet, and the cold liquid outlet are all located on the heat exchange shell.

4. The heat exchanger according to claim 3, characterized in that: The hydrothermal pipeline located within the heat exchange zone extends in a zigzag pattern along the length of the heat exchange shell.

5. The heat exchanger according to claim 1, characterized in that: The heat exchanger housing is provided with an inspection door, and both the inspection door and the heat exchanger housing are provided with multiple heat dissipation holes.

6. The heat exchanger according to claim 1, characterized in that: The inlet pipe is also equipped with a first pressure detection component, which is used to check the pressure of the liquid in the inlet pipe.

7. The heat exchanger according to claim 6, characterized in that: The outlet end of the hydrothermal pipeline is equipped with a detection component, which includes: A temperature detection component is used to detect the temperature of the liquid after heat exchange; a second pressure detection component is used to detect the liquid pressure inside the hot liquid pipeline.

8. The heat exchanger according to claim 7, characterized in that: The heat exchanger housing is equipped with a display screen, which is electrically connected to the first pressure detection component and the second pressure detection component. The display screen is used to display the liquid pressure of the cold liquid pipeline and the hot liquid pipeline.

9. The heat exchanger according to claim 1, characterized in that: The inlet and outlet ends of the cold liquid pipeline, and the inlet and outlet ends of the hot liquid pipeline, all extend outward along the direction of the heat exchanger casing, and each of the outward-extending pipelines is equipped with a switch valve.

10. The heat exchanger according to claim 9, characterized in that: The heat exchanger housing has multiple outlet ports on one side. The inlet and outlet ends of the cold liquid pipeline and the inlet and outlet ends of the hot liquid pipeline extend outward along the opening direction of the outlet ports.

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