Cooling device for centrifugal motor

Abstract

The utility model provides a heat dissipation device for a centrifugal motor, and the device comprises the centrifugal motor which is used for driving centrifugal equipment to make centrifugal movement; the cooling pipeline penetrates through the front end cover of the centrifugal motor, extends into the shell of the centrifugal motor and penetrates out of the rear end cover of the centrifugal motor; the air exhaust assembly comprises an air exhaust pipe and a Venturi pipe; one end of the exhaust pipe penetrates through a front end cover of the centrifugal motor and extends into a shell of the centrifugal motor, the Venturi pipe is located in the shell of the centrifugal motor and communicated with the end, located in the shell of the centrifugal motor, of the exhaust pipe, and an air inlet is formed in a throat of the Venturi pipe. According to the centrifugal motor, the dissipation speed of heat in the shell of the centrifugal motor is increased, the heat dissipation efficiency of the centrifugal motor is improved, and the service life of the centrifugal motor is prolonged.

Description

Technical Field

[0001] The present application relates to heat dissipation technology, and in particular to a heat dissipation device for a centrifugal motor. Background Art

[0002] A centrifugal motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Its main function is to convert electrical energy into mechanical energy, specifically generating rotational force through centrifugal force. It is often used to drive the operation of centrifugal equipment and can be applied to industry, agriculture, transportation, household appliances, laboratories, scientific research, and medical fields. Taking the application of centrifugal motors in the medical field as an example, it can be used to drive centrifugal motion of medical equipment such as centrifuges and blood centrifuges in the medical field, thereby achieving better separation effects.

[0003] During long-term operation, the stator coils and bearings of a centrifugal motor generate heat. Furthermore, centrifugal motors are typically installed within the housing of the centrifugal equipment, making it difficult for the heat generated by the motor to dissipate. Consequently, the centrifugal motor may overheat during extended operation. This prolonged overheating can shorten the motor's service life, cause it to operate unstable, and even, in severe cases, burn out. Existing centrifugal motors typically dissipate heat naturally, using methods such as heat dissipation fins on the motor housing and heat dissipation holes at the motor ends. However, this slows the heat dissipation rate within the motor housing, leaving room for improvement in heat dissipation. Utility Model Content

[0004] The present application provides a heat dissipation device for a centrifugal motor, which is used to solve the technical problems described in the above background technology.

[0005] In order to solve the above technical problems, this application adopts the following technical solutions:

[0006] The present application provides a heat dissipation device for a centrifugal motor, comprising:

[0007] Centrifugal motor, used to drive centrifugal equipment to produce centrifugal motion;

[0008] a cooling pipe, the cooling pipe passing through the front end cover of the centrifugal motor and extending into the housing of the centrifugal motor and passing out from the rear end cover of the centrifugal motor;

[0009] An exhaust assembly includes an exhaust pipe and a venturi tube; one end of the exhaust pipe passes through the front end cover of the centrifugal motor and extends into the housing of the centrifugal motor; the venturi tube is located in the housing of the centrifugal motor and is connected to one end of the exhaust pipe located in the housing of the centrifugal motor; an air inlet is provided at the throat of the venturi tube.

[0010] Optionally, the cooling pipe includes a first pipe section, a spiral pipe section, and a second pipe section that are connected in sequence;

[0011] The spiral pipe section is located inside the casing of the centrifugal motor and surrounds the outside of the stator assembly inside the casing of the centrifugal motor. One end of the first pipe section away from the spiral pipe section is located outside the casing of the centrifugal motor and is connected to a blowing device. One end of the second pipe section away from the spiral pipe section is located outside the casing of the centrifugal motor.

[0012] Optionally, ventilation holes are provided at equal intervals on the spiral pipe segment.

[0013] Optionally, the air inlet of the air blowing device is connected to a cooler via an air inlet duct, and the cold air outlet of the cooler is connected to an end of the air inlet duct away from the air blowing device.

[0014] Optionally, the air extraction assembly further comprises an annular tube rotatably sleeved on a rotating shaft within the housing of the centrifugal motor;

[0015] There are multiple Venturi tubes, and the multiple Venturi tubes are connected to the tube body of the annular tube at equal intervals. One end of the exhaust pipe is located inside the casing of the centrifugal motor and the other end is connected to the annular tube between two of the Venturi tubes. The other end of the exhaust pipe passes through and extends out of the casing of the centrifugal motor and is connected to an exhaust fan.

[0016] Optionally, a plurality of annular heat dissipation grooves are provided on the casing of the centrifugal motor at equal intervals along its length.

[0017] Optionally, a filter is provided on each of the annular heat dissipation grooves, and heat dissipation fins are provided on the outer wall of the housing of the centrifugal motor between every two adjacent annular heat dissipation grooves.

[0018] The heat dissipation device for a centrifugal motor provided in the present application exchanges heat with the heat generated in the casing of the centrifugal motor during operation through a cooling pipe, thereby reducing the temperature inside the casing of the centrifugal motor. At the same time, the heat in the casing of the centrifugal motor is extracted to the outside of the casing of the centrifugal motor through an exhaust pipe and a venturi tube connected to the exhaust pipe, thereby rapidly reducing the temperature inside the casing of the centrifugal motor. An air inlet is opened at the throat of the venturi tube. Since the air pressure at the throat is lower than that at other sections of the venturi tube, an adsorption effect is generated at the throat of the venturi tube and the air flow rate is accelerated. Therefore, an air inlet is opened at the throat of the venturi tube, so that the heat in the casing of the centrifugal motor is rapidly extracted into the venturi tube through the air inlet and discharged to the outside of the casing of the centrifugal motor from the exhaust pipe, thereby accelerating the heat dissipation rate in the casing of the centrifugal motor, improving the heat dissipation efficiency of the centrifugal motor, and extending the service life of the centrifugal motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 A schematic diagram of the internal structure of a heat dissipation device for a centrifugal motor provided in one embodiment of the present application;

[0021] Figure 2 A schematic diagram of a structure in which ventilation holes are provided on a spiral pipe segment provided in an embodiment of the present application;

[0022] Figure 3 A schematic structural diagram of an air extraction assembly provided in one embodiment of the present application;

[0023] Figure 4 A schematic diagram of a structure in which an annular heat dissipation groove is provided on the outside of the housing of a centrifugal motor provided in one embodiment of the present application;

[0024] Figure 5 A schematic structural diagram of an embodiment of the present application showing a filter screen provided on an annular heat dissipation groove and heat dissipation fins provided outside the housing of a centrifugal motor.

[0025] In the figure: 100, centrifugal motor; 101, annular heat dissipation groove; 1011, filter; 102, heat dissipation fin; 200, cooling pipe; 201, first pipe section; 2011, air blowing device; 202, spiral pipe section; 2021, ventilation hole; 203, second pipe section; 300, exhaust assembly; 301, exhaust pipe; 3011, exhaust fan; 302, Venturi tube; 3021, air inlet; 303, annular pipe; 400, air inlet duct; 401, cooler. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application are clearly and completely described below. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts also fall within the scope of protection of this application.

[0027] refer to Figures 1 to 4 , the present application provides a heat dissipation device for a centrifugal motor, comprising:

[0028] The centrifugal motor 100 is used to drive the centrifugal device to generate centrifugal motion. Usually, the centrifugal motor 100 is disposed in a housing of the centrifugal device to drive the housing of the centrifugal device to generate centrifugal motion. The centrifugal device may be a centrifuge, a blood centrifuge, or the like.

[0029] The cooling pipe 200 extends through the front end cover of the centrifugal motor 100, into the housing of the centrifugal motor 100, and out through the rear end cover of the centrifugal motor 100. A cooling medium, which can be air, flows into the cooling pipe 200. During the heat dissipation process of the centrifugal motor 100, the cooling medium in the cooling pipe 200 exchanges heat with the heat in the housing of the centrifugal motor 100, thereby increasing the heat dissipation efficiency of the centrifugal motor 100. Both ends of the cooling pipe 200 are located outside the housing of the centrifugal device.

[0030] The exhaust assembly 300 includes an exhaust pipe 301 and a venturi tube 302; one end of the exhaust pipe 301 passes through the front end cover of the centrifugal motor 100 and extends into the housing of the centrifugal motor 100, the venturi tube 302 is located in the housing of the centrifugal motor 100 and is connected to one end of the exhaust pipe 301 located in the housing of the centrifugal motor 100, and an air inlet 3021 is opened at the throat of the venturi tube 302. Among them, the exhaust component 300 is used to extract the heat in the casing of the centrifugal motor 100 to the outside of the casing of the centrifugal motor 100. Since the air pressure at the throat of the venturi tube 302 is lower than that at other sections of the venturi tube 302, an adsorption effect is generated at the throat of the venturi tube 302, causing the air flow rate to accelerate. Therefore, an air inlet 3021 is opened at the throat of the venturi tube 302, so that the heat in the casing of the centrifugal motor 100 is quickly extracted into the venturi tube 302 through the air inlet 3021 and discharged from the exhaust pipe 301 to the outside of the casing of the centrifugal motor 100, thereby accelerating the heat dissipation rate in the casing of the centrifugal motor 100, improving the heat dissipation efficiency of the centrifugal motor 100, and reducing the possibility of various components being burned due to excessive local temperature rise in the centrifugal motor 100, thereby extending the service life of the centrifugal motor 100. There can be multiple air inlets 3021 , and the multiple air inlets 3021 can be opened at equal intervals around the throat of the venturi tube 302 .

[0031] The heat dissipation device for a centrifugal motor provided in the present application exchanges heat with the heat generated in the casing of the centrifugal motor 100 during operation through the cooling pipe 200, so that the temperature in the casing of the centrifugal motor 100 is reduced. At the same time, the heat in the casing of the centrifugal motor 100 is extracted to the outside of the casing of the centrifugal motor 100 through the exhaust pipe 301 and the venturi tube 302 connected to the exhaust pipe 301, so that the temperature in the casing of the centrifugal motor 100 is quickly reduced. An air inlet 3021 is opened at the throat of the venturi tube 302. Since the throat of the venturi tube 302 is relatively The air pressure at other sections of the venturi tube 302 is relatively low, which causes an adsorption effect at the throat of the venturi tube 302 and accelerates the flow of air. Therefore, an air inlet 3021 is provided at the throat of the venturi tube 302, so that the heat in the casing of the centrifugal motor 100 is quickly drawn into the venturi tube 302 through the air inlet 3021 and discharged to the outside of the casing of the centrifugal motor 100 through the air extraction pipe 301, thereby accelerating the heat dissipation rate in the casing of the centrifugal motor 100, improving the heat dissipation efficiency of the centrifugal motor 100, and extending the service life of the centrifugal motor 100.

[0032] In some embodiments, reference Figure 1 The cooling pipe 200 in the present application includes a first pipe section 201, a spiral pipe section 202, and a second pipe section 203 that are connected in sequence; specifically, the spiral pipe section 202 is located in the housing of the centrifugal motor 100 and surrounds the outside of the stator assembly in the housing of the centrifugal motor 100, wherein the spiral pipe section 202 is at a preset distance from the outside of the stator assembly. The preset distance can be set according to actual needs to avoid direct contact between the pipe wall of the spiral pipe section 202 and the outside of the stator assembly, so that the cooling medium in the spiral pipe section 202 cools the stator assembly without affecting the operation of the stator assembly. The end of the first pipe section 201 away from the spiral pipe section 202 is located outside the housing of the centrifugal motor 100 and is connected to the blowing device 2011. The end of the second pipe section 203 away from the spiral pipe section 202 is located outside the housing of the centrifugal motor 100. Since the heat within the casing of the centrifugal motor 100 is mainly generated by the coils on the stator assembly, and the spiral tube segment 202 increases its contact area with the stator assembly within the casing of the centrifugal motor 100, the cooling medium within the spiral tube segment 202 is in full contact with the heat generated within the casing of the centrifugal motor 100 and heat is exchanged, thereby rapidly reducing the temperature within the casing of the centrifugal motor 100 and avoiding the phenomenon of overheating and damage of various components within the casing of the centrifugal motor 100 due to local temperature rise, thereby improving the heat dissipation efficiency of the centrifugal motor 100 and extending the service life of the centrifugal motor 100. The blowing device 2011 can be a blower, an axial flow fan, etc.

[0033] In some embodiments, reference Figure 2The spiral pipe section 202 in the present application is provided with ventilation holes 2021 at equal intervals. The ventilation holes 2021 allow the cooling air provided by the air blowing device 2011 to be directly dispersed within the housing of the centrifugal motor 100, so that the cooling air directly contacts and exchanges heat with the heat within the housing of the centrifugal motor 100, thereby improving the heat exchange efficiency between the cooling air and the heat within the housing of the centrifugal motor 100. There can be multiple ventilation holes 2021, which are evenly spaced on the spiral pipe section 202. The number and aperture of the ventilation holes 2021 can be set according to the length and diameter of the spiral pipe section 202, and therefore, the present application does not specifically limit them.

[0034] In some embodiments, reference Figure 1 In the present application, the air inlet of the air blowing device 2011 is connected to a cooler 401 through an air inlet duct 400, and the cold air outlet of the cooler 401 is connected to the end of the air inlet duct 400 away from the air blowing device 2011. Since the centrifugal motor 100 is disposed in the housing of the centrifugal device and is used to drive the centrifugal device to generate centrifugal motion, the cooler 401 is disposed outside the housing of the centrifugal device during the heat dissipation process of the centrifugal motor 100. The cooler 401 is used to cool the air drawn into the air blowing device 2011, so that the temperature of the air drawn into the cooling duct 200 through the air blowing device 2011 is lower. The lower temperature air can quickly cool the inside of the housing of the centrifugal motor 100, thereby improving the heat dissipation efficiency of the centrifugal motor 100.

[0035] In some embodiments, reference Figure 3 The exhaust assembly 300 in the present application also includes an annular tube 303 that is rotatably sleeved on a rotating shaft within the housing of the centrifugal motor 100; wherein the annular tube 303 can rotate within the housing of the centrifugal motor 100 as the rotating shaft rotates, and the diameter of the annular tube 303 can be set according to actual needs. Therefore, the present application does not make any specific limitations on it.

[0036] Specifically, there are multiple Venturi tubes 302, which are evenly spaced and connected to the annular tube 303. One end of the exhaust pipe 301 is located inside the housing of the centrifugal motor 100, and the other end is connected to the annular tube 303 between the two Venturi tubes 302. The other end of the exhaust pipe 301 passes through and extends outside the housing of the centrifugal motor 100 and is connected to an exhaust fan 3011. The exhaust fan 3011 is disposed outside the housing of the centrifugal device. The other end of the exhaust pipe 301 (i.e., the end of the exhaust pipe 301 away from the annular tube 303) passes through the housing of the centrifugal motor 100 and the housing of the centrifugal device in sequence and extends outside the housing of the centrifugal device. The exhaust pipe 301 is rotatably connected to the housing of the centrifugal motor 100 and the housing of the centrifugal device. The multiple Venturi tubes 302 rotate with the rotation of the annular tube 303. The multiple Venturi tubes 302 can increase the heat dissipation efficiency within the housing of the centrifugal motor 100.

[0037] In some embodiments, reference Figure 4 and Figure 5 The centrifugal motor 100 of the present application has a plurality of annular heat dissipation grooves 101 formed on the housing at equal intervals along its length. The annular heat dissipation grooves 101 allow heat within the housing of the centrifugal motor 100 to be quickly dissipated to the outside of the housing, thereby improving the heat dissipation efficiency within the housing of the centrifugal motor 100. The width and number of the annular heat dissipation grooves 101 can be set according to the size of the centrifugal motor 100 and are not specifically limited in this application.

[0038] In some embodiments, reference Figure 5 In the present application, a filter screen 1011 is provided on each annular heat dissipation groove 101, and a heat dissipation fin 102 is provided on the outer wall of the housing of the centrifugal motor 100 between each two adjacent annular heat dissipation grooves 101. The filter screen 1011 matches the annular heat dissipation groove 101. The filter screen 1011 can allow the heat inside the housing of the centrifugal motor 100 to dissipate to the outside of the housing of the centrifugal motor 100. At the same time, the air outside the housing of the centrifugal motor 100 is filtered to prevent it from carrying impurities into the housing of the centrifugal motor 100 and affecting the normal operation of the various components inside the housing of the centrifugal motor 100, thereby ensuring the service life of the centrifugal motor 100. The filter screen 1011 can be made of stainless steel, and the specifications can be set according to actual needs. Therefore, this application does not make any specific restrictions on it. In addition, since the centrifugal motor 100 is usually arranged in the casing of the centrifugal device, that is, the casing of the centrifugal device can protect the centrifugal motor 100, the setting of the annular heat dissipation groove 101 can quickly dissipate the heat in the centrifugal motor 100 to the outside of its casing, and the operation of the various components in the centrifugal motor 100 will not be affected by the setting of the annular heat dissipation groove 101.

[0039] In addition, the heat dissipation fins 102 increase the contact area between the housing of the centrifugal motor 100 and the air, allowing the heat in the housing of the centrifugal motor 100 to be quickly exchanged with the air, thereby enhancing heat transfer and improving the heat dissipation efficiency of the heat in the housing of the centrifugal motor 100. The number of heat dissipation fins 102 can be set according to actual needs and is not specifically limited in this application.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A heat dissipation device for a centrifugal motor, characterized in that: include: A centrifugal motor (100) is used to drive the centrifugal device to produce centrifugal motion; A cooling pipe (200), wherein the cooling pipe (200) passes through the front end cover of the centrifugal motor (100), extends into the housing of the centrifugal motor (100), and passes out from the rear end cover of the centrifugal motor (100); An air extraction component (300), the air extraction component (300) comprising an air extraction pipe (301) and a venturi tube (302); one end of the air extraction pipe (301) passes through the front end cover of the centrifugal motor (100) and extends into the housing of the centrifugal motor (100); the venturi tube (302) is located in the housing of the centrifugal motor (100) and is connected to one end of the air extraction pipe (301) located in the housing of the centrifugal motor (100); and an air inlet (3021) is provided at the throat of the venturi tube (302).

2. The heat dissipation device for a centrifugal motor according to claim 1, characterized in that: The cooling pipeline (200) comprises a first pipe section (201), a spiral pipe section (202) and a second pipe section (203) which are connected in sequence; The spiral pipe segment (202) is located inside the casing of the centrifugal motor (100) and surrounds the outside of the stator assembly inside the casing of the centrifugal motor (100); one end of the first pipe segment (201) away from the spiral pipe segment (202) is located outside the casing of the centrifugal motor (100) and is connected to a blower device (2011); and one end of the second pipe segment (203) away from the spiral pipe segment (202) is located outside the casing of the centrifugal motor (100).

3. The heat dissipation device for a centrifugal motor according to claim 2, characterized in that: The spiral pipe section (202) is provided with ventilation holes (2021) at equal intervals.

4. The heat dissipation device for a centrifugal motor according to claim 2, characterized in that: The air inlet of the air blowing device (2011) is connected to a cooler (401) via an air inlet duct (400), and the cold air outlet of the cooler (401) is connected to an end of the air inlet duct (400) away from the air blowing device (2011).

5. The heat dissipation device for a centrifugal motor according to claim 1, characterized in that: The air extraction assembly (300) further comprises an annular tube (303) rotatably sleeved on a rotating shaft in a housing of the centrifugal motor (100); There are a plurality of Venturi tubes (302), and the plurality of Venturi tubes (302) are connected to the tube body of the annular tube (303) at equal intervals. One end of the exhaust pipe (301) is located inside the housing of the centrifugal motor (100), and the other end is connected to the annular tube (303) between two of the Venturi tubes (302). The other end of the exhaust pipe (301) passes through and extends out of the housing of the centrifugal motor (100) and is connected to an exhaust fan (3011).

6. The heat dissipation device for a centrifugal motor according to any one of claims 1 to 5, characterized in that: The casing of the centrifugal motor (100) is provided with a plurality of annular heat dissipation grooves (101) at equal intervals along its length direction.

7. The heat dissipation device for a centrifugal motor according to claim 6, characterized in that: A filter screen (1011) is provided on each of the annular heat dissipation grooves (101), and heat dissipation fins (102) are provided on the outer wall of the housing of the centrifugal motor (100) between each two adjacent annular heat dissipation grooves (101).

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