Vacuum pump with self-heating heat exchange function device and heat exchange control method of vacuum pump

Abstract

The invention relates to the field of vacuum pumps, in particular to a vacuum pump with a self-heating heat exchange function device and a heat exchange control method thereof.The vacuum pump comprises a machine cabinet, a first pump body and a second pump body, a controller is arranged on the side face of the machine cabinet, and a central heat exchanger is arranged in the machine cabinet; the first pump body and the second pump body communicate with the central heat exchanger through a first connecting pipe and a second connecting pipe correspondingly, a gas heat exchange assembly is arranged in the central heat exchanger, a heat exchange cooling area is formed in the central heat exchanger, a cooling circulation pipe is arranged on the side face of the central heat exchanger, and the cooling circulation pipe is connected with a first-stage heat exchanger. A heat exchange silencer is connected to the second pump body, a gas silencing heat exchange assembly is formed in the heat exchange silencer, a heat exchange circulating pipe is arranged on the side face of the heat exchange silencer, and the heat exchange circulating pipe is connected with a second-stage heat exchanger. And the energy utilization efficiency of the system is improved.

Description

Technical Field

[0001] The invention relates to the field of vacuum pumps, and in particular to a vacuum pump with a self-heating heat exchange function device and a heat exchange control method thereof. Background Art

[0002] As an important industrial equipment, vacuum pump plays a key role in many industries. It has a wide range of applications, including but not limited to the chemical industry, semiconductor photovoltaic industry, aerospace industry, medical field, metallurgical industry, environmental monitoring and control, and paper industry. Vacuum pumps are widely used in vacuum drying, vacuum cooling, vacuum concentration, vacuum extraction and vacuum packaging. Vacuum pumps are used to create a vacuum environment to meet the high requirements for product purity and quality.

[0003] There are various types of vacuum pumps, including water ring vacuum pumps, rotary vane vacuum pumps, Roots pumps, etc. The water ring vacuum pump uses the rotating impeller to throw water to the pump casing to form a water ring, thereby achieving gas suction and discharge. The rotary vane vacuum pump is an oil-sealed mechanical vacuum pump that can be used alone or as a fore pump for other high vacuum pumps or ultra-high vacuum pumps. The working principle of the Roots pump is similar to that of the Roots blower. Through the continuous rotation of the rotor, the gas is sucked from the air inlet into the space between the rotor and the pump casing, and then discharged through the exhaust port.

[0004] However, although the existing vacuum pumps are widely used in many fields, they still have some defects. First, the high-temperature gas generated by the vacuum compression of the traditional vacuum pump is generally directly discharged into the external air, resulting in a high temperature in the workshop environment, which affects the service life and working efficiency of the vacuum pump and causes certain pollution to the workshop environment. Secondly, the heat in the existing vacuum pump is not easy to release, which causes the temperature of the vacuum pump cavity to rise, making the rotor in the cavity and the inner wall of the cavity prone to friction or jamming, which in turn affects the work of the vacuum pump. In addition, the existing vacuum pump lacks a structure to recycle its high-temperature gas, which affects the use of the vacuum pump and causes a waste of heat resources, making it difficult to recover heat, which makes the vacuum pump have certain limitations in structure and function.

[0005] In addition, since the heat exchange structure of the existing vacuum pump is relatively simple, the heat exchange efficiency is not high, and the heat exchange control is not precise enough and often cannot meet the requirements. Therefore, there is an urgent need for a new type of vacuum pump with a self-heating heat exchange function device and a heat exchange control method thereof to improve the heat exchange efficiency, optimize heat recovery, and enhance control accuracy, thereby meeting the diverse needs in industrial production and scientific research. Summary of the invention

[0006] The purpose of the present invention is to solve the above defects and provide a vacuum pump with a self-heating heat exchange function device and a heat exchange control method thereof, so as to solve the technical problems in the above background technology that the existing vacuum pumps are not easy to recover the heat generated by them, resulting in direct discharge of heat causing environmental pollution, affecting the working use of the vacuum pump, and the heat recovery method of the existing vacuum pumps is low in efficiency and it is not easy to carry out stable and efficient heat recovery, thus affecting the stable use of the vacuum pump.

[0007] The object of the present invention is achieved in the following ways:

[0008] A vacuum pump with a self-heating heat exchange function device comprises a cabinet, a first pump body and a second pump body arranged in the cabinet, a controller is arranged on the side of the cabinet, an air inlet end is formed on the first pump body, a central heat exchanger is arranged in the cabinet, the first pump body and the second pump body are installed on the central heat exchanger, and the first pump body and the second pump body are connected to the central heat exchanger through a first connecting pipe and a second connecting pipe respectively, a gas heat exchange component for connecting the first connecting pipe and the second connecting pipe is arranged inside the central heat exchanger, and a heat exchange and cooling device for heat exchange and cooling the gas heat exchange component is formed inside the central heat exchanger Zone, a cooling circulation pipe connected with the heat exchange and cooling zone is arranged on the side of the central heat exchanger, one end of the cooling circulation pipe extends outwardly and is connected with a first-stage heat exchanger, a heat exchange muffler is connected with the second pump body through the air outlet end, a gas silencer heat exchange component is formed inside the heat exchange muffler, and a silencer outlet connected with the gas silencer heat exchange component is arranged on the heat exchange muffler, a heat exchange zone for exchanging heat for the gas silencer heat exchange component is formed in the heat exchange muffler, a heat exchange circulation pipe connected with the heat exchange zone is arranged on the side of the heat exchange muffler, and one end of the heat exchange circulation pipe extends outwardly and is connected with a second-stage heat exchanger.

[0009] Further in the above description, the gas heat exchange component includes two sealing plates and a plurality of hollow condensing tubes connected to the two sealing plates, the two sealing plates are sealed and installed inside the central heat exchanger, the heat exchange and cooling zone is formed by the seal between the two sealing plates, and the interior of the central heat exchanger is formed with two gas flow zones distributed at both ends of the heat exchange and cooling zone through the sealing interval of the sealing plates, the two ends of the condensing tube are respectively connected to the two sealing plates, and the end of the condensing tube passes through the sealing plate and is connected to the gas flow zone.

[0010] Further in the above description, the first pump body and the second pump body are connected to a gas flow area through a first connecting pipe and a second connecting pipe respectively, so that the gas generated by the first pump body drives the gas to enter a gas flow area in the central heat exchanger through the first connecting pipe, and pass through the hollow condenser tube and another gas flow area of ​​the central heat exchanger, and is introduced into the second pump body by the second connecting pipe to form a double-stage vacuum.

[0011] Further in the above description, the cooling circulation pipe includes a cooling inlet pipe and a cooling return pipe, one end of the cooling inlet pipe extends to the primary heat exchanger and is connected to the primary heat exchanger, and the other ends of the cooling inlet pipe and the cooling return pipe extend to the central heat exchanger and are connected to the heat exchange and cooling zone, and the cooling inlet pipe is connected to the primary heat exchanger through a first water pump.

[0012] The cooling medium of the primary heat exchanger can continuously circulate into the heat exchange and cooling zone of the central heat exchanger, continuously taking away the heat generated during the gas heat exchange process, ensuring the continuity and stability of the cooling effect, and further improving the heat exchange effect of the high-temperature gas in the first pump body, thereby enabling cooling and cooling treatment.

[0013] Further in the above description, a motor box and a gear box are both provided on the first pump body and the second pump body, and the cooling liquid inlet pipe is connected to a motor liquid inlet pipe and a gear liquid inlet pipe for heat exchange and cooling of the motor box and the gear box through a connecting valve, and the cooling liquid return pipe is connected to a motor liquid return pipe and a gear liquid return pipe for liquid circulation with the motor box and the gear box through an installing valve.

[0014] The motor liquid inlet pipe and gear liquid inlet pipe provided can introduce the cooling medium of the primary heat exchanger into the motor box and gear box of the pump body, thereby performing heat exchange and cooling on the components in the motor box and gear box, further reducing the friction or jamming of the rotor inside the pump body, and enhancing the stability and reliability of the operation of the first pump body and the second pump body.

[0015] Further in the above description, a silencer air inlet connected to the gas silencer heat exchange component is formed on the heat exchange silencer, and the air outlet end of the second pump body is connected to the silencer air inlet through an exhaust pipe. The gas silencer heat exchange component includes two partitions and a plurality of hollow condensation silencer pipes. The two partitions are sealed and installed inside the heat exchange silencer so that the two partitions are sealed to form a heat exchange zone, and the heat exchange silencer is formed with two gas circulation zones distributed at both ends of the heat exchange zone through the sealing interval of the two partitions. The two ends of the condensation silencer pipe are respectively connected to the two partitions, and the end of the condensation silencer pipe passes through the partition to be connected to the gas circulation zone.

[0016] The heat exchange silencer can silence the generated compressed air, and the structural design of the condensation silencer pipe absorbs and blocks the sound, effectively reducing the noise generated by the gas flow and improving the working environment.

[0017] A heat exchange zone and two gas circulation zones are formed by installing two partitions in the heat exchange muffler, and the two gas circulation zones are connected by a condensing heat exchange pipe, thereby ensuring the orderly flow and sufficient heat exchange of the gas in the heat exchange muffler and improving the heat exchange efficiency and the muffler effect.

[0018] Further in the above description, the heat exchange circulation pipe includes a heat exchange liquid inlet pipe and a heat exchange liquid return pipe, one end of the heat exchange liquid inlet pipe and the heat exchange liquid return pipe extends to the heat exchange muffler and is connected to the heat exchange zone, and the other end of the heat exchange liquid inlet pipe and the heat exchange liquid return pipe extends to the secondary heat exchanger and is connected to the secondary heat exchanger, and the heat exchange liquid inlet pipe is connected to the secondary heat exchanger through a second water pump.

[0019] The setting of the secondary heat exchanger can store and preserve the heat absorbed during the heat exchange process, which is convenient for the subsequent use of the heat medium and improves the energy utilization rate.

[0020] Further in the above description, the primary heat exchanger is composed of a cooling tower or a thermal energy storage box.

[0021] Optionally, in some embodiments, the primary heat exchanger is composed of a cooling tower, so that it can enhance the heat exchange and cooling of the first pump body and the second pump body, thereby performing efficient cooling processing, which is conducive to the stable use of the vacuum pump.

[0022] Optionally, in some embodiments, the primary heat exchanger is composed of a thermal energy storage box, which can store and keep warm the heat absorbed during the heat exchange process, so as to facilitate the subsequent use of the heat medium and improve the utilization rate of energy.

[0023] A method for controlling the self-heating heat exchange of a vacuum pump, the method comprising the following steps:

[0024] Step 1: Use a vacuum pump with a self-heating heat exchange function device to exchange heat;

[0025] Step 2: The controller drives the first pump body and the second pump body to operate the vacuum pumping action, and high-temperature gas is generated under the driving compression of the first pump body and the second pump body, so that the high-temperature gas passes through the gas flow area at one end of the central heat exchanger and passes through the condenser tube to enter the gas flow area at the other end for heat exchange and cooling;

[0026] Step 3: The controller drives the first water pump to allow the cooling medium inside the primary heat exchanger to enter the heat exchange and cooling zone through the cooling circulation pipe to circulate heat exchange and cool the outer surface of the condenser tube, thereby performing the primary heat exchange process;

[0027] Step 4: The cooling medium is transported to the first pump body and the second pump body through the motor liquid inlet pipe and the gear liquid inlet pipe on the cooling circulation pipe for heat exchange and cooling, and the cooling medium is circulated and discharged through the connected motor liquid return pipe and the gear liquid return pipe;

[0028] Step 5: The high-temperature gas generated by the operation of the second pump body is connected to the heat exchange muffler through the connection between the air outlet of the second pump body and the heat exchange muffler, and the high-temperature gas passes through the hollow condensing heat exchange tube for heat conduction. The heat exchange medium in the secondary heat exchanger enters the heat exchange area through the heat exchange circulation tube to transfer the heat on the condensing heat exchange tube, so that the heat generated by the high-temperature gas is recovered into the secondary heat exchanger, thereby performing secondary heat exchange treatment.

[0029] Further in the above description, the second pump body transmits the high-temperature gas through the silencer air inlet to the heat exchange muffler through the exhaust pipe, and the partition arranged in the heat exchange muffler allows the high-temperature gas to pass through the hollow condensation heat exchange tube and be discharged from the silencer air outlet.

[0030] Further in the above description, the inner walls of the condenser tube and the condensation heat exchange tube are provided with a plurality of fins.

[0031] Beneficial effects of the present invention:

[0032] 1. The first connecting pipe and the second connecting pipe are connected to the central heat exchanger, so that the high-temperature gas generated by the first pump body is cooled by the gas heat exchange component in the central heat exchanger. The heat exchange and cooling zone is connected by the cooling circulation pipe, which can effectively cool the gas heat exchange component to prevent the vacuum pump from overheating and damage. The connection of the cooling circulation pipe and the primary heat exchanger ensures the continuous supply of cooling medium, further improving the heat dissipation and cooling effect of the first pump body. The gas can smoothly enter the second pump body through the connection of the second connecting pipe and the second pump body, and the heat exchange silencer is connected through the air outlet to achieve gas silencing treatment, reduce noise pollution, and recover heat through the internal gas silencer heat exchange component. The heat exchange zone is connected to the secondary heat exchanger through the heat exchange circulation pipe, which can recycle the heat generated by the pump body. At the same time, the heat generated in the heat exchange process can be stored through the primary heat exchanger and the secondary heat exchanger, thereby improving energy utilization efficiency and stable use of the vacuum pump.

[0033] 2. A vacuum pump with a self-heating heat exchange function device can effectively utilize the self-heating energy generated by the vacuum pump during operation, and realize efficient conversion and utilization of energy through the heat exchange device. This design not only improves the energy utilization efficiency of the system, but also reduces the dependence on external energy, which is conducive to energy conservation and emission reduction. The controller accurately controls the operation of the pump body to ensure the stability and efficiency of the vacuum pumping action. At the same time, the cooling medium of the primary heat exchanger efficiently exchanges heat and cools the outer surface of the condenser tube, improving the cooling efficiency. The cooling medium is transported to the pump through the motor inlet pipe and the gear inlet pipe on the cooling circulation pipe. The body is cooled and circulated through the return pipe, which further effectively extends the service life of the pump body components and improves the overall stability and durability of the pump body operation. The air outlet of the second pump body is connected to the heat exchange muffler. The heat exchange muffler reduces the noise pollution during the discharge of high-temperature gases. The heat on the condensing heat exchange tube is recovered and stored through the heat exchange medium in the secondary heat exchanger, providing a heat source for other systems or equipment, realizing energy reuse and energy saving effects, thereby realizing efficient, stable and environmentally friendly heat exchange and heat recovery, improving the energy utilization efficiency of the system, and reducing environmental pollution and energy waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a three-dimensional diagram of the overall structure of the first embodiment from a front view angle;

[0035] Figure 2 This is a three-dimensional diagram of the overall structure of the first embodiment from a rear-view angle;

[0036] Figure 3 This is a schematic diagram of the internal structure installation of the cabinet in this embodiment;

[0037] Figure 4 This is a schematic diagram of the installation connection structure of the first pump body and the second pump body in this embodiment;

[0038] Figure 5 This is a schematic diagram of the connection structure of the cooling circulation pipe in this embodiment;

[0039] Figure 6 is a three-dimensional diagram of the central heat exchanger of this embodiment;

[0040] Figure 7 is a plan cross-sectional view of the central heat exchanger of this embodiment;

[0041] Figure 8 is a schematic diagram of the internal structure of the central heat exchanger of this embodiment;

[0042] Fig. 9 Schematic diagram of the internal structure of the heat exchange muffler in this embodiment;

[0043] Fig.10 This is a schematic diagram of the connection structure of the cooling tower in the second embodiment of the present invention;

[0044] The reference numerals in the figure are: 1-cabinet, 2-first pump body, 3-second pump body, 4-controller, 5-central heat exchanger, 6-first connecting pipe, 7-second connecting pipe, 8-gas heat exchange component, 81-sealing plate, 82-condenser, 9-heat exchange and cooling zone, 10-cooling tower, 11-heat exchange muffler, 12-muffler outlet, 13-heat exchange zone, 14-secondary heat exchanger, 15-gas flow zone, 16-cooling liquid inlet pipe, 17-cooling liquid return pipe, 18-motor box , 19-gear box, 20-motor liquid inlet pipe, 21-gear liquid inlet pipe, 22-motor liquid return pipe, 23-gear liquid return pipe, 24-silencer air inlet, 25-exhaust pipe, 26-gas silencer heat exchange component, 261-partition, 262-condensation silencer pipe, 27-gas circulation area, 28-baffle, 29-intake circulation area, 30-exhaust circulation area, 31-heat exchange liquid inlet pipe, 32-heat exchange liquid return pipe, 33-second water pump, 34-return water port, 35-hot water outlet. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0046] Embodiment 1

[0047] In this embodiment, refer to Figure 1-Figure 9 A vacuum pump with a self-heating heat exchange function device is specifically implemented, comprising a cabinet 1, a first pump body 2 and a second pump body 3 arranged in the cabinet 1, a controller 4 is arranged on the side of the cabinet 1, an air inlet end is formed on the first pump body 2, a central heat exchanger 5 is arranged in the cabinet 1, the first pump body 2 and the second pump body 3 are installed on the central heat exchanger 5, and the first pump body 2 and the second pump body 3 are connected to the central heat exchanger 5 through a first connecting pipe 6 and a second connecting pipe 7 respectively, a gas heat exchange component 8 for connecting the first connecting pipe 6 and the second connecting pipe 7 is arranged inside the central heat exchanger 5, and a heat exchange and cooling zone 9 for heat exchange and cooling the gas heat exchange component 8 is formed inside the central heat exchanger 5, and a heat exchange and cooling zone 9 for heat exchange and cooling the gas heat exchange component 8 is arranged on the side of the central heat exchanger 5 A cooling circulation pipe is connected to the heat cooling zone 9, and one end of the cooling circulation pipe extends outwardly and is connected to a primary heat exchanger 10 for storing and recovering the exported heat of the heat exchange cooling zone 9. A heat exchange muffler 11 is connected to the second pump body 3 through the air outlet end. A gas silencer heat exchange component 26 is formed inside the heat exchange muffler 11, and a silencer outlet 12 connected to the gas silencer heat exchange component 26 is provided on the heat exchange muffler 11. A heat exchange zone 13 for heat exchange of the gas silencer heat exchange component 26 is formed in the heat exchange muffler 11. A heat exchange circulation pipe connected to the heat exchange zone 13 is provided on the side of the heat exchange muffler 11, and one end of the heat exchange circulation pipe extends outwardly and is connected to a secondary heat exchanger 14 for storing and recovering the exported heat of the heat exchange zone 13.

[0048] In this embodiment, refer to Figure 6-Figure 8 The gas heat exchange component 8 includes two sealing plates 81 and a plurality of hollow condensing tubes 82 connected to the two sealing plates 81. The two sealing plates 81 are sealed and installed inside the central heat exchanger 5. The heat exchange and cooling zone 9 is formed by the seal between the two sealing plates 81. The interior of the central heat exchanger 5 is formed with two gas flow zones 15 distributed at both ends of the heat exchange and cooling zone 9 through the sealing interval of the sealing plates 81. The two ends of the condensing tube 82 are respectively connected to the two sealing plates 81, and the end of the condensing tube 82 passes through the sealing plates 81 and is connected to the gas flow zone 15.

[0049] Specifically, the interior of the central heat exchanger 5 is divided into a heat exchange and cooling zone 9 and two gas flow zones 15 by two sealing plates 81, and the two gas flow zones 15 are connected by a condenser 82, thereby realizing effective zoning of gas flow and cooling, improving heat exchange efficiency, and allowing the high-temperature gas to fully contact the condenser 82 during the flow process to exchange heat, thereby effectively reducing the temperature of the high-temperature gas in the first pump body 2 and improving the use of the first pump body 2.

[0050] In this embodiment, refer to Figure 6-Figure 8 The first pump body 2 and the second pump body 3 are connected to a gas flow area 15 through the first connecting pipe 6 and the second connecting pipe 7, respectively, so that the gas generated by the first pump body 2 enters a gas flow area 15 in the central heat exchanger 5 through the first connecting pipe 6, passes through the hollow condenser pipe 82 and another gas flow area 15 of the central heat exchanger 5, and is introduced into the second pump body 3 through the second connecting pipe 7 to form a double-stage vacuum. The high-temperature gas generated by the first pump body 2 is dissipated and cooled through the central heat exchanger 5, and passes through the second connecting pipe 7 to enter the second pump body 3 for subsequent compression, further improving the efficiency and stability of the vacuum pump.

[0051] In this embodiment, refer to Figure 4 and Figure 5 The cooling circulation pipe includes a cooling liquid inlet pipe 16 and a cooling liquid return pipe 17. One end of the cooling liquid inlet pipe 16 extends to the primary heat exchanger 10 and is connected to the primary heat exchanger 10, and the other ends of the cooling liquid inlet pipe 16 and the cooling liquid return pipe 17 extend to the central heat exchanger 5 and are connected to the heat exchange and cooling zone 9. The cooling liquid inlet pipe 16 is connected to the primary heat exchanger 10 through a first water pump 36.

[0052] Specifically, the cooling liquid inlet pipe 16 and the cooling liquid return pipe 17 connect the primary heat exchanger 10 and the central heat exchanger 5, so that the cooling medium of the primary heat exchanger 10 can continuously circulate into the heat exchange and cooling zone 9 of the central heat exchanger 5, continuously take away the heat generated in the gas heat exchange process, ensure the continuity and stability of the cooling effect, and further improve the heat exchange effect of the high-temperature gas of the first pump body 2, so that cooling and cooling treatment can be performed.

[0053] In this embodiment, refer to Figure 4 and Figure 5 The first pump body 2 and the second pump body 3 are both provided with a motor box 18 and a gear box 19. The cooling liquid inlet pipe 16 is connected to a motor liquid inlet pipe 20 and a gear liquid inlet pipe 21 for heat exchange and cooling of the motor box 18 and the gear box 19 through a connecting valve. The cooling liquid return pipe 17 is connected to a motor liquid return pipe 22 and a gear liquid return pipe 23 for liquid circulation communication with the motor box 18 and the gear box 19 through an installation valve.

[0054] Specifically, the motor liquid inlet pipe 20 and the gear liquid inlet pipe 21 can introduce the cooling medium of the primary heat exchanger 10 into the motor box 18 and the gear box 19 of the pump body, thereby performing heat exchange and cooling on the components in the motor box 18 and the gear box 19, further reducing the friction or jamming of the rotor inside the pump body, and enhancing the stability and reliability of the operation of the first pump body 2 and the second pump body 3.

[0055] In this embodiment, refer to Figure 4 , Figure 5 and Fig. 9 The heat exchange silencer 11 is provided with a silencer air inlet 24 connected to a gas silencer heat exchange component 26. The gas outlet end of the second pump body 3 is connected to the silencer air inlet 24 through an exhaust pipe 25. The gas silencer heat exchange component 26 includes two partitions 261 and a plurality of hollow condensation silencer pipes 262. The two partitions 261 are sealed and installed inside the heat exchange silencer 11 so that the heat exchange area 13 is formed by sealing between the two partitions 261. The heat exchange silencer 11 forms two gas circulation areas 27 distributed at both ends of the heat exchange area 13 through the sealed interval of the two partitions 261. The two ends of the condensation silencer pipe 262 are respectively connected to the two partitions 261, and the end of the condensation silencer pipe 262 passes through the partition 261 to be connected to the gas circulation area 27.

[0056] Specifically, the heat exchange muffler 11 can silence the generated compressed air, and the structural design of the condensation muffler 262 absorbs and blocks the sound, effectively reducing the noise generated by the gas flow and improving the working environment. The two partitions 261 are installed in the heat exchange muffler 11 to form a heat exchange area 13 and two gas circulation areas 27, and the two gas circulation areas 27 are connected by the condensation heat exchange pipe, which ensures the orderly flow and sufficient heat exchange of the gas in the heat exchange muffler 11, and improves the heat exchange efficiency and the muffler effect.

[0057] In this embodiment, refer to Fig. 9The two partitions 261 are installed up and down in the heat exchange silencer 11, and the top of the upper partition 261 is connected with a sealed baffle 28, so that the upper gas circulation area 27 is separated into an intake circulation area 29 and an exhaust circulation area 30, so that the silencer inlet 24 is connected with the intake circulation area 29, and the silencer outlet 12 is connected with the exhaust circulation area 30, so that the high-temperature gas generated by the second pump body 3 is subjected to secondary heat exchange, thereby improving the thermal conductivity of the condensation heat exchange tube.

[0058] Optionally, one or more support plates are connected to the middle of the condensing heat exchange tube, and conductive through holes are opened on the support plates so that the support plates can be installed in the heat exchange area 13, and the heat exchange area 13 can be connected through the conductive through holes.

[0059] Optionally, in one embodiment, the silencer air inlet 24 and the silencer air outlet 12 are respectively arranged at both ends of the heat exchange silencer 11, and the silencer air inlet 24 and the silencer air outlet 12 are respectively connected to a gas circulation area 27, thereby reducing the interval setting of the baffle 28.

[0060] The heat exchange circulation pipe includes a heat exchange liquid inlet pipe 31 and a heat exchange liquid return pipe 32. One end of the heat exchange liquid inlet pipe 31 and the heat exchange liquid return pipe 32 extends to the heat exchange muffler 11 and is connected to the heat exchange area 13, and the other end of the heat exchange liquid inlet pipe 31 and the heat exchange liquid return pipe 32 extends to the secondary heat exchanger 14 and is connected to the secondary heat exchanger 14. The heat exchange liquid inlet pipe 31 is connected to the secondary heat exchanger 14 through a second water pump 33.

[0061] Optionally, the secondary heat exchanger 14 is provided with a water return port 34 and a hot water outlet 35 .

[0062] Specifically, the circulation of the heat exchange medium between the secondary heat exchanger 14 and the heat exchange silencer 11 is driven by the second water pump 33 to ensure the flow rate and heat exchange effect of the heat exchange medium. The setting of the secondary heat exchanger 14 can store and preserve the heat absorbed during the heat exchange process, which is convenient for the subsequent use of the heat medium and improves the energy utilization rate.

[0063] Specifically, in this embodiment, the primary heat exchanger 10 and the secondary heat exchanger 14 are both composed of a thermal energy storage box, which can store and keep the heat absorbed during the heat exchange process, facilitate the subsequent use of the heat medium, and improve the energy utilization rate.

[0064] A method for controlling the self-heating heat exchange of a vacuum pump, the method comprising the following steps:

[0065] Step 1: Use a vacuum pump with a self-heating heat exchange function device to exchange heat;

[0066] Step 2: The controller 4 drives the first pump body 2 and the second pump body 3 to perform a vacuum operation, and high-temperature gas is generated under the driving compression of the first pump body 2 and the second pump body 3, so that the high-temperature gas passes through the gas flow area 15 at one end of the central heat exchanger 5 and passes through the condenser 82 to enter the gas flow area 15 at the other end for heat exchange and cooling;

[0067] Step 3: The controller 4 drives the first water pump 36 to allow the cooling medium inside the primary heat exchanger 10 to enter the heat exchange and cooling zone 9 through the cooling circulation pipe to circulate heat exchange and cool the outer surface of the condenser tube 82, thereby performing a primary heat exchange process;

[0068] Step 4: The cooling medium is transported to the first pump body 2 and the second pump body 3 through the motor liquid inlet pipe 20 and the gear liquid inlet pipe 21 on the cooling circulation pipe for heat exchange and cooling, and the cooling medium is circulated and discharged through the connected motor liquid return pipe 22 and the gear liquid return pipe 23;

[0069] Step 5: The outlet end of the second pump body 3 is connected to the heat exchange muffler 11, so that the high-temperature gas generated by the operation of the second pump body 3 enters the heat exchange muffler 11 for heat exchange, and the high-temperature gas passes through the hollow condensation heat exchange tube for heat conduction. The heat exchange medium in the secondary heat exchanger 14 enters the heat exchange area 13 through the heat exchange circulation tube to transfer the heat on the condensation heat exchange tube, so that the heat generated by the high-temperature gas is recovered into the secondary heat exchanger 14, so that the secondary heat exchange treatment can be carried out.

[0070] The second pump body 3 transmits the high-temperature gas through the exhaust pipe 25 to the heat exchange muffler 11 through the silencer air inlet 24, and the partition 261 arranged in the heat exchange muffler 11 allows the high-temperature gas to pass through the hollow condensation heat exchange pipe and be discharged from the silencer air outlet 12. The condensation pipe 82 and the inner wall of the condensation heat exchange pipe are provided with a plurality of fins. The fins are provided to further improve the heat conduction effect of the flowing high-temperature gas, thereby improving the heat exchange effect of the high-temperature gas.

[0071] The specific use principle in this embodiment is:

[0072] The controller 4 drives the first pump body 2 to operate, so that the high-temperature gas generated by the first pump body 2 passes through the first connecting pipe 6 and enters the gas flow area 15 at one end of the central heat exchanger 5, and passes through the hollow condenser pipe 82 to enter the gas flow area 15 at the other end of the central heat exchanger 5. The first water pump 36 drives the primary heat exchanger 10 (specifically, the primary heat exchanger 10 in this embodiment is a heat energy storage tank) to introduce the cooling medium, such as water, into the heat exchange and cooling area 9 in the central heat exchanger 5 through the cooling liquid inlet pipe 16 to absorb the heat of the condenser pipe 82, and then leads it back to the heat energy storage tank through the cooling liquid return pipe 17, so that the condenser pipe 82 can be heat-exchanged and cooled, thereby further improving the stability and efficiency of the operation of the first pump body 2;

[0073] After the high-temperature gas generated by the first pump body 2 passes through the central heat exchanger 5 for heat exchange and cooling, it is introduced into the second pump body 3 from the second connecting pipe 7, and under the drive of the second pump body 3, the high-temperature gas generated by the second pump body 3 is introduced into the heat exchange muffler 11 through the exhaust pipe 25. The compressed air generated by the heat exchange muffler 11 can be silenced, which effectively reduces the noise generated by the gas flow and improves the working environment. In addition, two partitions 261 are installed in the heat exchange muffler 11 to form a heat exchange area 13 and two gas circulation areas 27, and the two gas circulation areas 27 are connected by a condensation heat exchange pipe, which ensures the orderly flow and sufficient heat exchange of the gas in the heat exchange muffler 11, thereby improving the heat exchange efficiency and the muffler effect;

[0074] The heat exchange medium in the secondary heat exchanger 14 is controlled by the second water pump 33 to flow the heat exchange medium, so that the heat exchange medium enters the heat exchange area 13 to exchange heat on the condensing heat exchange tube, and is returned to the secondary heat exchanger 14 through the heat exchange return pipe 32 for storage. The return water port 34 and the hot water outlet 35 of the secondary heat exchanger 14 provide a heat source for other systems or equipment, realizing energy reuse and energy saving effects, thereby realizing efficient, stable and environmentally friendly heat exchange and heat recovery, improving the energy utilization efficiency of the system, and reducing environmental pollution and energy waste.

[0075] Embodiment 2

[0076] In this embodiment, refer to Fig.10 The difference between the second embodiment and the first embodiment is that the primary heat exchanger 10 is composed of a cooling tower, so that it can enhance the heat exchange and cooling of the first pump body 2 and the second pump body 3, thereby performing efficient cooling treatment, which is conducive to the stable use of the vacuum pump.

[0077] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention is disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments according to the technology of the present invention are within the scope of the technical solution of the present invention without departing from the content of the technical solution of the present invention.

Claims

1. A vacuum pump with a self-heating heat exchange function device, comprising a cabinet, a first pump body and a second pump body arranged in the cabinet, a controller is arranged on the side of the cabinet, and an air inlet end is formed on the first pump body, characterized in that: A central heat exchanger is arranged in the cabinet, and the first pump body and the second pump body are installed on the central heat exchanger, and the first pump body and the second pump body are connected with the central heat exchanger through the first connecting pipe and the second connecting pipe respectively, a gas heat exchange component for connecting the first connecting pipe and the second connecting pipe is arranged inside the central heat exchanger, and a heat exchange and cooling zone for heat exchange and cooling the gas heat exchange component is formed inside the central heat exchanger, a cooling circulation pipe connected with the heat exchange and cooling zone is arranged on the side of the central heat exchanger, one end of the cooling circulation pipe extends outwardly and is connected with a primary heat exchanger, a heat exchange muffler is connected to the second pump body through the air outlet end, a gas silencer heat exchange component is formed inside the heat exchange muffler, and a silencer outlet connected with the gas silencer heat exchange component is arranged on the heat exchange muffler, a heat exchange zone for heat exchange of the gas silencer heat exchange component is formed inside the heat exchange muffler, a heat exchange circulation pipe connected with the heat exchange zone is arranged on the side of the heat exchange muffler, and one end of the heat exchange circulation pipe extends outwardly and is connected with a secondary heat exchanger.

2. A vacuum pump with a self-heating heat exchange function device according to claim 1, characterized in that: The gas heat exchange component includes two sealing plates and a plurality of hollow condensing tubes connected to the two sealing plates. The two sealing plates are sealed and installed inside the central heat exchanger. The heat exchange and cooling zone is formed by the seal between the two sealing plates. The interior of the central heat exchanger is formed with two gas flow zones distributed at both ends of the heat exchange and cooling zone through the sealing interval of the sealing plates. The two ends of the condensing tube are respectively connected to the two sealing plates, and the end of the condensing tube passes through the sealing plate and is connected to the gas flow zone.

3. A vacuum pump with a self-heating heat exchange function device according to claim 2, characterized in that: The first pump body and the second pump body are connected to a gas flow area through a first connecting pipe and a second connecting pipe respectively, so that the gas generated by the first pump body enters a gas flow area in the central heat exchanger through the first connecting pipe, passes through the hollow condenser tube and another gas flow area of ​​the central heat exchanger, and is introduced into the second pump body through the second connecting pipe to form a double-stage vacuum.

4. A vacuum pump with a self-heating heat exchange function device according to claim 2, characterized in that: The cooling circulation pipe includes a cooling liquid inlet pipe and a cooling liquid return pipe. One end of the cooling liquid inlet pipe extends to the primary heat exchanger and is connected to the primary heat exchanger, and the other ends of the cooling liquid inlet pipe and the cooling liquid return pipe extend to the central heat exchanger and are connected to the heat exchange and cooling zone. The cooling liquid inlet pipe is connected to the primary heat exchanger through a first water pump.

5. A vacuum pump with a self-heating heat exchange function device according to claim 4, characterized in that: The first pump body and the second pump body are both provided with a motor box and a gear box. The cooling liquid inlet pipe is connected to a motor liquid inlet pipe and a gear liquid inlet pipe for heat exchange and cooling of the motor box and the gear box through a connecting valve. The cooling liquid return pipe is connected to a motor liquid return pipe and a gear liquid return pipe for liquid circulation with the motor box and the gear box through an installation valve.

6. A vacuum pump with a self-heating heat exchange function device according to claim 1, characterized in that: The heat exchange silencer is provided with a silencer air inlet connected to the gas silencer heat exchange component. The air outlet of the second pump body is connected to the silencer air inlet through an exhaust pipe. The gas silencer heat exchange component includes two partitions and a plurality of hollow condensation silencer pipes. The two partitions are sealed and installed inside the heat exchange silencer so that a heat exchange zone is formed by sealing between the two partitions. The heat exchange silencer forms two gas circulation zones distributed at both ends of the heat exchange zone through the sealing interval of the two partitions. The two ends of the condensation silencer pipe are respectively connected to the two partitions, and the end of the condensation silencer pipe passes through the partition to be connected to the gas circulation zone.

7. A vacuum pump with a self-heating heat exchange function device according to any one of claims 1 to 6, characterized in that: The heat exchange circulation pipe includes a heat exchange liquid inlet pipe and a heat exchange liquid return pipe, one end of the heat exchange liquid inlet pipe and the heat exchange liquid return pipe extends to the heat exchange muffler and is connected to the heat exchange area, and the other end of the heat exchange liquid inlet pipe and the heat exchange liquid return pipe extends to the secondary heat exchanger and is connected to the secondary heat exchanger, and the heat exchange liquid inlet pipe is connected to the secondary heat exchanger through a second water pump.

8. A vacuum pump with a self-heating heat exchange function device according to any one of claims 1 to 6, characterized in that: The primary heat exchanger is composed of a cooling tower or a thermal energy storage tank.

9. A method for controlling the self-heating heat exchange of a vacuum pump, characterized in that: The heat exchange control method comprises the following steps: Step 1: using a vacuum pump with a self-heating heat exchange function device according to any one of claims 1 to 8 to perform heat exchange; Step 2: The controller drives the first pump body and the second pump body to operate the vacuum pumping action, and high-temperature gas is generated under the driving compression of the first pump body and the second pump body, so that the high-temperature gas passes through the gas flow area at one end of the central heat exchanger and passes through the condenser tube to enter the gas flow area at the other end for heat exchange and cooling; Step 3: The controller drives the first water pump to allow the cooling medium inside the primary heat exchanger to enter the heat exchange and cooling zone through the cooling circulation pipe to circulate heat exchange and cool the outer surface of the condenser tube, thereby performing the primary heat exchange process; Step 4: The cooling medium is transported to the first pump body and the second pump body through the motor liquid inlet pipe and the gear liquid inlet pipe on the cooling circulation pipe for heat exchange and cooling, and the cooling medium is circulated and discharged through the connected motor liquid return pipe and the gear liquid return pipe; Step 5: The high-temperature gas generated by the operation of the second pump body is connected to the heat exchange muffler through the connection between the air outlet of the second pump body and the heat exchange muffler, and the high-temperature gas passes through the hollow condensing heat exchange tube for heat conduction. The heat exchange medium in the secondary heat exchanger enters the heat exchange area through the heat exchange circulation tube to transfer the heat on the condensing heat exchange tube, so that the heat generated by the high-temperature gas is recovered into the secondary heat exchanger, thereby performing secondary heat exchange treatment.

10. The vacuum pump self-heating heat exchange control method according to claim 9, characterized in that: The second pump body transmits the high-temperature gas through the silencer air inlet to the heat exchange muffler via the exhaust pipe, and the partition arranged in the heat exchange muffler allows the high-temperature gas to pass through the hollow condensation heat exchange tube and be discharged from the silencer air outlet.

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