A circulating heat exchange system

Abstract

This utility model relates to the field of vacuum pump technology, specifically disclosing a circulating heat exchange system used in conjunction with a vacuum pump. The vacuum pump includes a pump housing, and the circulating heat exchange system includes: an external heat exchange structure for exchanging heat with the cooling medium inside the pump housing, comprising a first heat exchange body and a secondary housing. The first heat exchange body includes a first outer tube and a plurality of first heat exchange tubes disposed within the first outer tube. The first outer tube has inflow and outflow ports for the heat exchange medium, which flows through the first heat exchange tubes; and an exhaust heat exchange structure for exchanging heat with the gas discharged from the pump housing, comprising a second heat exchange body and a vent pipe. The second heat exchange body allows the heat exchange medium to circulate, and the vent pipe is wound around the second heat exchange body. This utility model provides heat exchange functionality, achieving a stable and effective circulating heat dissipation effect.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pump technology, specifically a circulating heat exchange system. Background Technology

[0002] A vacuum pump is a device or equipment that uses mechanical, physical, chemical, or physicochemical methods to evacuate a container and create a vacuum. It is a key piece of equipment for achieving a vacuum environment. Vacuum pumps are used in semiconductors, lithium batteries, photovoltaics, steel, chemicals, petroleum, light industry, pharmaceuticals, and food. Vacuum pumps generate significant heat during operation, requiring cooling. For example, the cooling structure of the vacuum pump disclosed in patent number CN217539013U uses an internal coil for heat exchange, which has limited heat exchange efficiency and cannot exchange heat with the exhaust gas, thus having shortcomings. Utility Model Content

[0003] The purpose of this invention is to provide a circulating heat exchange system to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] A circulating heat exchange system for use with a vacuum pump, the vacuum pump including a pump housing, the circulating heat exchange system comprising:

[0006] An external heat exchange structure is used to exchange heat with the cooling medium inside the pump housing. It includes a first heat exchange body and a secondary housing. The first heat exchange body includes a first outer tube and a plurality of first heat exchange tubes disposed inside the first outer tube. The first outer tube has a heat exchange medium flowing in and out at both ends, and the heat exchange medium flows through the first heat exchange tubes.

[0007] An exhaust heat exchange structure is used to exchange heat with the gas discharged from the pump housing. The exhaust heat exchange structure includes a second heat exchange body and a vent pipe. The second heat exchange body is used for the flow of heat exchange medium, and the vent pipe is wound around the second heat exchange body.

[0008] Furthermore, the secondary housing is disposed on the first outer tube body, the secondary housing has an inflow cavity, the inflow cavity is provided with a plurality of inflow joints for the cooling medium to flow in, the inflow cavity is connected to the first outer tube body but not connected to the first heat exchange tube, and an outlet is provided below the first outer tube body for the cooling medium to flow out.

[0009] Furthermore, the outlet and the inflow cavity are located on the upper and lower sides of opposite ends of the first outer tube, respectively.

[0010] Furthermore, a pump body is provided on one side of the pump housing, which is used to realize the circulation of the cooling medium between the pump housing and the external heat exchange structure.

[0011] Furthermore, the second heat exchange body includes a second outer tube and a plurality of second heat exchange tubes disposed within the second outer tube. The vent pipe is disposed within the second outer tube and wrapped around the outside of the second heat exchange tubes, and the second heat exchange tubes are used for the flow of heat exchange medium.

[0012] Furthermore, the vent pipe is connected to the exhaust port of the pump housing and the interior of the pump housing, respectively. The vent pipe is used to transport gas and inject the heat-exchanged gas into the pump housing to blow the rotor.

[0013] Furthermore, both the external heat exchange structure and the exhaust heat exchange structure are connected to an external cooling source, which is used to provide the heat exchange medium.

[0014] This utility model has the following beneficial effects:

[0015] This invention achieves heat exchange and cooling of the cooling medium introduced into the pump housing through an external heat exchange structure and an exhaust heat exchange structure, thereby improving the heat dissipation effect on the pump housing and corresponding parts, realizing heat exchange and cooling of the cooling medium and gas, and achieving cyclic heat dissipation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the circulating heat exchange system combined with a vacuum pump in Example 1, excluding the drive motor;

[0018] Figure 2 for Figure 1 Schematic diagram of the heat exchange structure between the inside and outside;

[0019] Figure 3 for Figure 2 A cross-sectional schematic diagram;

[0020] Figure 4 for Figure 1 A schematic diagram of the central exhaust heat exchange structure. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] like Figures 1-4 As shown, the circulating heat exchange system in this embodiment is used in conjunction with a vacuum pump, such as a screw vacuum pump. A conventional vacuum pump includes a pump housing 1 and internal components such as a rotor. The pump housing 1 has a cooling channel for the circulation of cooling medium. This circulating heat exchange system is mainly composed of an external heat exchange structure 10 and an exhaust heat exchange structure 20. The external heat exchange structure 10 exchanges heat and cools the cooling medium to achieve circulating heat dissipation. The exhaust heat exchange structure 20 partially absorbs and exchanges heat and cools the gas at the exhaust port of the pump housing 1. The gas after heat exchange can be sprayed into the pump housing 1 for further cooling and dust removal.

[0024] Specifically, the external heat exchange structure 10 is used to exchange heat with the cooling medium inside the pump housing 1, including a first heat exchange body and a secondary housing 11. The first heat exchange body includes a first outer tube 12 and a plurality of first heat exchange tubes 13 disposed inside the first outer tube 12. The first outer tube 12 is used for the inflow and outflow of heat exchange medium at both ends, and the heat exchange medium flows through the first heat exchange tubes 13.

[0025] Additionally, a secondary housing 11 is disposed on the first outer tube 12. The secondary housing 11 has an inflow cavity 111, on which multiple inflow connectors 112 for the inflow of cooling medium are provided. The inflow cavity 111 is connected to the first outer tube 12 but not to the first heat exchange tube 13. That is, the first outer tube 12 has an opening at a corresponding position, which is covered by the secondary housing 11. An outlet 121 is provided below the first outer tube 12 for the cooling medium to flow out.

[0026] Here, the outlet 121 and the inflow cavity 111 are located on the upper and lower sides of the opposite ends of the first outer tube 12, respectively, to ensure the uniformity and sufficiency of the contact between the cooling medium and the outer wall of the first heat exchange tube 13.

[0027] Here, a pump body is provided on one side of the pump housing 1. The pump body is used to realize the circulation of the cooling medium between the pump housing 1 and the external heat exchange structure 10, that is, to realize the extraction and discharge of the cooling medium through the pump body.

[0028] In addition, the exhaust heat exchange structure 20 is used to exchange heat with the gas discharged from the pump housing 1. The exhaust heat exchange structure 20 includes a second heat exchange body and a vent pipe 21. The second heat exchange body is used for the flow of heat exchange medium, and the vent pipe 21 is wound around the second heat exchange body.

[0029] The second heat exchanger body is structurally similar to the first heat exchanger body, both including a second outer tube 22 and multiple second heat exchange tubes 23 disposed within the second outer tube 22. The vent pipe 21 is disposed within the second outer tube 22 and wound around the outside of the second heat exchange tubes 23. The second heat exchange tubes 23 are used for the flow of heat exchange medium. The vent pipe 21 is connected to the exhaust port of the pump housing 1 and the interior of the pump housing 1. The vent pipe 21 is used to transport gas and spray the heat-exchanged gas into the pump housing 1 to cool and blow the rotor.

[0030] It should be noted that the external circulation heat exchange system is connected to an external cooling source, such as a tap water source. The external cooling source is used to provide the heat exchange medium to achieve heat exchange and cooling of the corresponding cooling medium and gas.

[0031] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A circulating heat exchange system, used in conjunction with a vacuum pump, the vacuum pump comprising a pump housing, characterized in that, The circulating heat exchange system includes: An external heat exchange structure is used to exchange heat with the cooling medium inside the pump housing. It includes a first heat exchange body and a secondary housing. The first heat exchange body includes a first outer tube and a plurality of first heat exchange tubes disposed inside the first outer tube. The first outer tube has a heat exchange medium flowing in and out at both ends, and the heat exchange medium flows through the first heat exchange tubes. An exhaust heat exchange structure is used to exchange heat with the gas discharged from the pump housing. The exhaust heat exchange structure includes a second heat exchange body and a vent pipe. The second heat exchange body is used for the flow of heat exchange medium, and the vent pipe is wound around the second heat exchange body.

2. The circulating heat exchange system according to claim 1, characterized in that: The auxiliary housing is mounted on the first outer tube body. The auxiliary housing has an inflow cavity, and the inflow cavity is provided with multiple inflow connectors for the cooling medium to flow into. The inflow cavity is connected to the first outer tube body but not to the first heat exchange tube. An outlet is provided below the first outer tube body for the cooling medium to flow out.

3. The circulating heat exchange system according to claim 2, characterized in that: The outlet and the inflow cavity are located on the upper and lower sides of opposite ends of the first outer tube, respectively.

4. A circulating heat exchange system according to claim 2, characterized in that: A pump body is provided on one side of the pump housing, which is used to realize the circulation of cooling medium between the pump housing and the external heat exchange structure.

5. A circulating heat exchange system according to claim 1, characterized in that: The second heat exchange body includes a second outer tube and a plurality of second heat exchange tubes disposed within the second outer tube. The vent pipe is disposed within the second outer tube and wrapped around the outside of the second heat exchange tubes. The second heat exchange tubes are used for the flow of heat exchange medium.

6. A circulating heat exchange system according to claim 5, characterized in that: The vent pipe is connected to the exhaust port of the pump housing and the interior of the pump housing. The vent pipe is used to transport gas and inject the heat-exchanged gas into the pump housing to blow the rotor.

7. A circulating heat exchange system according to claim 1, characterized in that: Both the external heat exchange structure and the exhaust heat exchange structure are connected to an external cooling source, which provides the heat exchange medium.

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