Circulating heat exchange system

Abstract

The invention relates to the technical field of vacuum pumps, and particularly discloses a circulation heat exchange system which is used in cooperation with a vacuum pump, the vacuum pump comprises a pump shell, and the circulation heat exchange system comprises an outer heat exchange structure used for conducting heat exchange on a cooling medium in the pump shell and comprising a first heat exchange body and an auxiliary box body; the first heat exchange main body comprises a first outer pipe body and a plurality of first heat exchange pipes arranged in the first outer pipe body, the two ends of the first outer pipe body allow heat exchange media to flow in and out, and the heat exchange media flow through the first heat exchange pipes; and the exhaust heat exchange structure is used for conducting heat exchange on gas exhausted by the pump shell, the exhaust heat exchange structure comprises a second heat exchange main body and a ventilation pipe body, the second heat exchange main body is used for heat exchange medium circulation, and the ventilation pipe body is wound on the second heat exchange main body. The heat exchange function is provided, and the stable and effective circulating heat dissipation effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum pumps, in particular to a circulating heat exchange system. Background Art

[0002] A vacuum pump is a device or equipment that creates a vacuum by evacuating a container using mechanical, physical, chemical, or physicochemical methods. It is a key component in achieving a vacuum environment. It is used in fields such as semiconductors, lithium batteries, photovoltaics, steel, chemicals, petroleum, light industry, medicine, and food. Vacuum pumps generate significant heat during use and require cooling. For example, the cooling structure of the vacuum pump disclosed in patent number CN217539013U uses a built-in coil for heat exchange, which has limited heat exchange efficiency and is unable to heat the exhaust gas, resulting in drawbacks. Summary of the Invention

[0003] The object of the present invention is to provide a circulating heat exchange system to solve the problems raised in the above background technology.

[0004] To solve the above technical problems, the present invention is achieved through the following technical solutions: A circulating heat exchange system is used in conjunction with a vacuum pump, wherein the vacuum pump includes a pump housing. The circulating heat exchange system includes: An external heat exchange structure, the external heat exchange structure is used to exchange heat with the cooling medium in the pump housing, including a first heat exchange body and a sub-tank body, the first heat exchange body including a first outer tube body and a plurality of first heat exchange tubes disposed in the first outer tube body, the first outer tube body having two ends for heat exchange medium to flow in and out, the heat exchange medium flowing through the first heat exchange tubes; The exhaust heat exchange structure is used to exchange heat for the gas discharged from the pump housing. The exhaust heat exchange structure includes a second heat exchange body and a ventilation pipe body. The second heat exchange body is used for the circulation of heat exchange medium, and the ventilation pipe body is wound around the second heat exchange body.

[0005] Furthermore, the sub-box body is arranged on the first outer tube body, and the sub-box body has an inflow cavity, and 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 and is not connected to the first heat exchange tube. An outflow port is provided below the first outer tube body, and the outflow port is for the cooling medium to flow out.

[0006] Furthermore, the outflow port and the inflow cavity are respectively located at upper and lower sides of opposite ends of the first outer tube body.

[0007] Furthermore, a pump body is provided on one side of the pump housing, and the pump body is used to realize the circulation of the cooling medium between the pump housing and the external heat exchange structure.

[0008] Furthermore, the second heat exchange body includes a second outer tube body and a plurality of second heat exchange tubes arranged in the second outer tube body, the ventilation tube body is arranged in the second outer tube body and wrapped around the outside of the second heat exchange tubes, and the second heat exchange tubes are used for the circulation of heat exchange medium.

[0009] Furthermore, the vent pipe body is respectively connected to the exhaust port of the pump housing and the interior of the pump housing. The vent pipe body is used to transport gas and spray the heat-exchanged gas into the pump housing to blow the rotor.

[0010] Furthermore, the external heat exchange structure and the exhaust heat exchange structure are both connected to an external cooling source, and the external cooling source is used to provide a heat exchange medium.

[0011] The present invention has the following beneficial effects: The present invention realizes heat exchange cooling of the cooling medium entering the pump housing through the external heat exchange structure and the exhaust heat exchange structure, improves the heat dissipation effect of the pump housing and corresponding parts, realizes heat exchange cooling of the cooling medium and gas, and realizes circulating heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 This is a schematic diagram of the circulating heat exchange system in Example 1 combined with a vacuum pump, which does not include a drive motor; Figure 2 for Figure 1 Schematic diagram of the internal and external heat exchange structure; Figure 3 for Figure 2 Schematic cross-sectional view of ; Figure 4 for Figure 1 Schematic diagram of the exhaust heat exchange structure. DETAILED DESCRIPTION

[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0015] Example 1 like Figure 1-Figure 4As shown, the circulating heat exchange system in this embodiment is used in combination with a vacuum pump such as a screw vacuum pump. The vacuum pump conventionally includes a pump housing 1 and internal components such as a rotor. The pump housing 1 has a cooling channel for circulation of the cooling medium. The 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 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 blowing to achieve further cooling and dust removal.

[0016] Specifically, the external heat exchange structure 10 is used to exchange heat with the cooling medium in the pump casing 1, and includes a first heat exchange body and a sub-box body 11. The first heat exchange body includes a first outer tube body 12 and a plurality of first heat exchange tubes 13 arranged in the first outer tube body 12. The heat exchange medium flows in and out at both ends of the first outer tube body 12, and the heat exchange medium flows through the first heat exchange tubes 13.

[0017] Furthermore, the auxiliary box body 11 is arranged on the first outer tube body 12, and the auxiliary box body 11 has an inflow cavity 111, and the inflow cavity 111 is provided with a plurality of inflow joints 112 for the cooling medium to flow in. The inflow cavity 111 is connected to the first outer tube body 12 and is not connected to the first heat exchange tube 13, that is, the first outer tube body 12 has an opening at a corresponding position, and the opening is covered by the auxiliary box body 11, and an outflow port 121 is provided below the first outer tube body 12, and the outflow port 121 is for the cooling medium to flow out. Here, the outflow port 121 and the inflow cavity 111 are respectively located at the upper and lower sides of the opposite ends of the first outer tube 12 to ensure uniform and sufficient contact between the cooling medium and the outer wall of the first heat exchange tube 13 .

[0018] Here, a pump body is provided on one side of the pump housing 1 , and 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.

[0019] Furthermore, the exhaust heat exchange structure 20 is used to exchange heat for the gas discharged from the pump housing 1. The exhaust heat exchange structure 20 includes a second heat exchange body and a ventilation pipe body 21. The second heat exchange body is used for the circulation of heat exchange medium, and the ventilation pipe body 21 is wound around the second heat exchange body.

[0020] Among them, the structure of the second heat exchange body is basically the same as that of the first heat exchange body, both of which include a second outer tube body 22 and a plurality of second heat exchange tubes 23 arranged in the second outer tube body 22. The ventilation tube body 21 is arranged in the second outer tube body 22 and wrapped around the outside of the second heat exchange tube 23. The second heat exchange tube 23 is used for the circulation of heat exchange medium. The ventilation tube body 21 is respectively connected to the exhaust port of the pump housing 1 and the interior of the pump housing 1. The ventilation tube body 21 is used to transport gas and spray the heat-exchanged gas into the pump housing 1 to cool the rotor.

[0021] It should be noted that the external circulation heat exchange system is connected to an external cooling source, such as a tap water source, and the external cooling source is used to provide a heat exchange medium to achieve heat exchange and cooling of the corresponding cooling medium and gas.

[0022] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention 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 comprises: An external heat exchange structure, the external heat exchange structure is used to exchange heat with the cooling medium in the pump housing, including a first heat exchange body and a sub-tank body, the first heat exchange body including a first outer tube body and a plurality of first heat exchange tubes disposed in the first outer tube body, the first outer tube body having two ends for heat exchange medium to flow in and out, the heat exchange medium flowing through the first heat exchange tubes; The exhaust heat exchange structure is used to exchange heat for the gas discharged from the pump housing. The exhaust heat exchange structure includes a second heat exchange body and a ventilation pipe body. The second heat exchange body is used for the circulation of heat exchange medium, and the ventilation pipe body is wound around the second heat exchange body.

2. A circulating heat exchange system according to claim 1, characterized in that: The auxiliary box body is arranged on the first outer tube body, and an inflow cavity is provided in the auxiliary box body. A plurality of inflow joints for the cooling medium to flow in are provided on the inflow cavity. The inflow cavity is connected to the first outer tube body and is not connected to the first heat exchange tube. An outflow port is provided below the first outer tube body, and the outflow port is for the cooling medium to flow out.

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

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, and the pump body is used to realize the circulation of the cooling medium between the pump housing and the external heat exchange structure.

5. The circulating heat exchange system according to claim 1, characterized in that: The second heat exchange body includes a second outer tube body and a plurality of second heat exchange tubes arranged in the second outer tube body. The ventilation tube body is arranged in the second outer tube body and wrapped around the outside of the second heat exchange tubes. The second heat exchange tubes are used for heat exchange medium to circulate.

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

7. The circulating heat exchange system according to claim 1, characterized in that: The external heat exchange structure and the exhaust heat exchange structure are both connected to an external cooling source, and the external cooling source is used to provide a heat exchange medium.

Images