CN214228030U

CN214228030U - Air cooling type heat dissipation device and permanent magnet transmission equipment utilizing same for heat dissipation

Info

Publication number: CN214228030U
Application number: CN202023151629.6U
Authority: CN
Inventors: 陆少松; 朱立群
Original assignee: Shanghai Cet Energy Technology Co ltd
Current assignee: Shanghai Cet Energy Technology Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-09-17
Anticipated expiration: 2030-12-24

Abstract

The utility model relates to a heat dissipation technical field of permanent magnetism transmission equipment, in particular to an air cooling type heat dissipation device, which comprises a water spray pipe and a water guide disc, wherein the water guide disc is arranged on a conductor disc of the permanent magnetism transmission equipment, the outer end surface of the water guide disc is provided with guide grooves along the circumferential interval, the guide grooves are distributed outwards from the center of the water guide disc, one ends of the guide grooves, which are far away from the center of the water guide disc, are all bent towards the same rotating direction, and the end parts of the guide grooves extend to the outer edge of the water guide disc; the pipe orifice of the spray pipe is aligned to one end of the guide groove close to the center of the water guide disc, water mist is generated at the pipe orifice of the spray pipe, the conductor disc rotates to drive the water mist to flow to the outer edge of the water guide disc from one end of the guide groove close to the center of the water guide disc, and heat generated by rotation of the conductor disc is taken away; and also relates to a permanent magnet transmission device for radiating by using the air cooling type radiating device. The utility model discloses can effectively solve current dependence fin heat dissipation and have that the noise is big, the poor bearing fragile of radiating effect and the problem that supplementary cooling system structure is complicated, with high costs that great power permanent magnetism transmission equipment used.

Description

Air cooling type heat dissipation device and permanent magnet transmission equipment utilizing same for heat dissipation

Technical Field

The utility model relates to a permanent magnetism transmission equipment heat dissipation technical field, concretely relates to air cooling type heat abstractor and utilize its radiating permanent magnetism transmission equipment.

Background

The permanent magnet transmission equipment generally comprises a permanent magnet coupler and a permanent magnet speed regulator, wherein the permanent magnet coupler is a device for realizing torque transmission from a motor to a load through an air gap between a conductor and a permanent magnet, and can realize a transmission mode without mechanical connection between the motor and the load. The permanent magnet speed regulator is a speed regulating machine which is added with a regulating mechanism on the basis of a permanent magnet coupler and achieves the purposes of speed regulation and energy conservation.

At present, a permanent magnet driver (air cooling type) with the transmission power less than or equal to 400kw generally adopts a radiating fin to radiate heat without other auxiliary cooling systems, and only adopts simple air cooling; the permanent magnet driver with the transmission power of more than or equal to 400kw has larger heat productivity, and the auxiliary radiating fins cannot meet the radiating requirement, so that an auxiliary radiating system, namely an oil cooling or water cooling system is additionally arranged, must be adopted for cooling by generally adopting cooling liquid. When the permanent magnet transmission equipment works, the maximum heating working condition is that about 5-10% of power loss of rated power is converted into heat energy. When the transmission power is larger than or equal to 400kw, the heat productivity is large, the air cooling cannot effectively dissipate heat, the equipment is easily overheated and even damaged, and the application of the air-cooled permanent magnet transmission equipment in the case of large power (400-1000 kw) is greatly limited.

The following drawbacks are summarized: the 1.400-1000 kw permanent magnet driver cannot simply depend on a radiating fin for radiating heat at present, an auxiliary liquid cooling radiating system is required to be added, the investment cost is high, the system is complex, and the maintenance amount is large; 2. the air-cooled permanent magnet driver radiating by the radiating fins has high noise due to the turbulent flow effect of the radiating fins, and even can not meet the requirement that the noise of a user is lower than 85 decibels; 3. at present, 400kw power permanent magnet transmission equipment only depends on radiating fins to dissipate heat, so that the heat dissipation efficiency is low, an equipment conductor disc (outer rotor) is often overheated, heat is transferred to an inner bearing, the bearing is difficult to maintain, and even the bearing is damaged due to overheating. Therefore, it is necessary to design a new technical solution to comprehensively solve the problems in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an air cooling type heat abstractor and utilize its radiating permanent magnetism transmission equipment can effectively solve current dependence fin heat dissipation and have that the noise is big, the poor bearing fragile of radiating effect and the problem that supplementary cooling system structure is complicated, with high costs that great power permanent magnetism transmission equipment used.

In order to solve the technical problem, the utility model discloses a following technical scheme:

an air cooling type heat dissipation device is matched with permanent magnet transmission equipment for use, and comprises a water spray pipe and a water guide disc, wherein the water guide disc is arranged on a conductor disc of the permanent magnet transmission equipment, guide grooves are formed in the outer end surface of the water guide disc along the circumferential interval of the water guide disc, the guide grooves are distributed outwards from the center of the water guide disc, one ends of the guide grooves, far away from the center of the water guide disc, are bent towards the same rotating direction, and the end parts of the guide grooves extend to the outer edge of the water guide disc; the pipe orifice of the water spray pipe is aligned to one end of the guide groove close to the center of the water guide disc, water mist is generated at the pipe orifice of the water spray pipe, the conductor disc rotates to drive the water mist to flow to the outer edge of the water guide disc from one end of the guide groove close to the center of the water guide disc, and heat generated by rotation of the conductor disc is taken away.

Preferably, the width of the guide groove gradually increases from the center of the water guide tray to the outer edge of the water guide tray.

The arrangement of the water guide disc can be divided into two types according to application scenes: one is that for the permanent magnetic transmission device which is not manufactured and used, the outer end face of the conductor disc can be directly processed, and the water guide disc with the guide groove is processed to be matched for use.

In the other type, for the manufactured and used permanent magnet transmission equipment, a water guide disc made of an aluminum disc can be additionally arranged on the outer end face of the conductor disc and is fixed on the outer end face of the conductor disc through a connecting piece.

Preferably, the air-cooling type heat dissipation devices are symmetrically arranged on the two conductor discs of the permanent magnet transmission equipment.

And simultaneously, the permanent magnet transmission equipment for radiating by using the air cooling type radiating device is also provided.

In the air-cooled heat dissipation device provided by the technical scheme, the original permanent magnet transmission equipment is provided with the water spray pipe and the water guide disc matched with the water spray pipe for use, and the water guide disc is provided with the guide groove; when the permanent magnet transmission equipment is in a working state, a dynamic negative pressure area can be generated near the center of the water guide disc, the nozzle of the water spray pipe faces one end of the guide groove close to the center of the water guide groove, atomized water mist is generated at the nozzle, the water mist passes through the rolling mat of the negative pressure area at the center of the water guide disc, passes through the guide groove on the surface of the water guide disc and spreads over the surface of the conductor disc, and the heat of the conductor disc is taken away after sufficient heat exchange; the utility model discloses do not adopt the fin heat dissipation, effectively avoid the high noise that the fin vibration produced, adopt such phase transition auxiliary heat radiation structure of spray pipe and water guide dish simultaneously, can effectively dispel the heat to the heat that permanent magnetism transmission equipment during operation produced, its simple structure, low cost, the radiating effect is good, can effectively solve the problem that current equipment is high in price, the structure is complicated.

Simultaneously in order to satisfy more use scenes, the utility model discloses to the permanent magnetism transmission equipment that has come into use, adopt the mode of attaching the water guide disc, to the permanent magnetism transmission equipment that has not come into production, can adopt the direct mode of seting up the guide way on original conductor dish, make the outer terminal surface of conductor dish form the water guide disc, this mode is simple and convenient, the various scenes of nimble adaptation. And when the permanent magnet transmission device with larger power is used, the conductor discs on two sides of the permanent magnet transmission device can be used according to requirements. The permanent magnet transmission equipment manufactured by the air cooling type heat dissipation device can effectively solve the problems of poor heat dissipation effect, high noise, high cost of an externally attached auxiliary liquid cooling heat dissipation system and complex system of the existing permanent magnet transmission equipment.

Drawings

Fig. 1 is a schematic structural view of a permanent magnet transmission device that performs heat dissipation using an air-cooling type heat dissipation apparatus.

In the figure: 1. a permanent magnet drive device; 11. a conductor disc; 2. a water guide tray; 21. a guide groove; 3. a water spray pipe; 31. a nozzle.

Detailed Description

In order to make the objects and advantages of the present invention more apparent, the present invention will be described in detail with reference to the following embodiments. It is to be understood that the following text is only intended to describe one or several particular embodiments of the invention, and does not strictly limit the scope of the claims specifically claimed.

Example 1

Referring to fig. 1, the technical scheme adopted in this embodiment is that an air-cooling type heat dissipation device used in cooperation with a permanent magnet transmission device includes a DN15 water spray pipe 3 and a water guide disc 2, the water guide disc 2 is arranged on a conductor disc 11 of the permanent magnet transmission device 1, guide grooves 21 are arranged on the outer end surface of the water guide disc 2 along the circumferential direction of the water guide disc 2 at intervals, and the groove width of each guide groove 21 is gradually increased from the center of the water guide disc 2 to the outer edge of the water guide disc 2; the guide grooves 21 are distributed outwards from the center of the water guide disc 2, one ends of the guide grooves 21, which are far away from the center of the water guide disc 2, are bent towards the same rotating direction, and the end parts of the guide grooves extend to the outer edge of the water guide disc 2; the pipe orifice 31 of the spray pipe 3 is aligned with one end of the guide groove 21 close to the center of the water guide disc 2, the spray pipe 3 is externally connected with a water source, the pipe orifice 31 of the spray pipe 3 generates atomized water mist, the conductor disc 11 rotates to drive the water mist to flow to the outer edge of the water guide disc 2 from one end of the guide groove 21 close to the center of the water guide disc 2, and heat generated by rotation of the conductor disc 11 is taken away, so that heat dissipation of the permanent magnet transmission device is achieved.

In the embodiment, the water guide disc 2 and the conductor disc 11 are integrally formed, that is, the conductor disc 11 is provided with the guide groove 21, so that the outer end surface of the conductor disc 11 forms the water guide disc 2, the method is suitable for the permanent magnet transmission equipment 1 which is not put into production, and the produced permanent magnet transmission equipment 1 can be used as the air-cooled permanent magnet transmission equipment 1; in addition, during production, the conductor discs 11 on both sides of the permanent magnet transmission device 1 can be provided with guide grooves 21 to form water guide discs 2, and a plurality of water spray pipes 3 can be arranged according to requirements to improve the heat dissipation effect under high power.

Example 2

The embodiment is a permanent magnet transmission device utilizing an air cooling type heat dissipation device to dissipate heat, as shown in fig. 1, the air cooling type heat dissipation device includes a DN15 water spray pipe 3 and a water guide disc 2, the water guide disc 2 is arranged on a conductor disc 11 of the permanent magnet transmission device 1, guide grooves 21 are arranged on the outer end surface of the water guide disc 2 along the circumferential direction thereof at intervals, and the groove width of the guide grooves 21 is gradually increased from the center of the water guide disc 2 to the outer edge of the water guide disc 2; the guide grooves 21 are distributed outwards from the center of the water guide disc 2, one ends of the guide grooves 21, which are far away from the center of the water guide disc 2, are bent towards the same rotating direction, and the end parts of the guide grooves extend to the outer edge of the water guide disc 2; the pipe orifice 31 of the spray pipe 3 is aligned with one end of the guide groove 21 close to the center of the water guide disc 2, the spray pipe 3 is externally connected with a water source, atomized water mist is generated at the pipe orifice 31 of the spray pipe 3, the conductor disc 11 rotates to drive the water mist to flow to the outer edge of the water guide disc 2 from one end of the guide groove 21 close to the center of the water guide disc 2, and heat generated by rotation of the conductor disc 11 is taken away, so that heat dissipation of the permanent magnet transmission device is achieved.

Because the permanent magnetic transmission equipment in the embodiment is already put into use, the water guide disc 2 adopts a mode of additionally arranging an aluminum disc, the surface of the water guide disc is provided with the guide groove 21 and then is subjected to anti-corrosion treatment, the water guide disc 2 is fixed on the outer end surface of the conductor disc 11 through screws, and in addition, the water guide disc 2 is formed by splicing two semicircular disc bodies, so that the installation and the replacement on the conductor disc 11 which is put into use are convenient.

The heat dissipation principles of both embodiment 1 and embodiment 2 are as follows: the outer end face of the water guide disc is provided with a guide groove, and the guide groove is utilized to realize the purposes of entrainment and uniform distribution of the cooling water on the outer surface of the conductor disc; when the permanent magnet transmission equipment works, the conductor disc rotates to generate a dynamic negative pressure area near the center of the conductor disc, atomized water mist generated by the water spray pipe is sucked by the central negative pressure area, the water mist is radially thrown out along the guide groove by utilizing centrifugal force and is spread on the surface of the whole conductor disc, and heat on the conductor disc is taken away through full continuous heat exchange.

Following current air-cooling type permanent magnetism transmission equipment with the utility model discloses a permanent magnetism transmission equipment carries out the comparison:

existing air cooling type heat dissipation capacity Q₁： Q₁=C_{Air conditioner}M_{Air conditioner}△T_{Air conditioner}

Improved water spraying air cooling type heat dissipation Q₂：

Q₂₁=C_{Water (W)}M_{Water (W)}△T_{Water (W)}

Q₂₂= C_{Phase change}M_{Water (W)}

Q₂=Q₁+Q₂₁+Q₂₂

In the formula: q₁Heat carried away for the air; m_{Air conditioner}The mass flow of air participating in heat dissipation; c_{Air conditioner}Is the air specific heat capacity; delta T_{Air conditioner}Raising the temperature of the air; q₂₁Heat taken away for water cooling; m_{Water (W)}Cooling water mass flow participating in heat dissipation; c_{Water (W)}The specific heat capacity of water; delta T_{Water (W)}Raising the temperature of the air; q₂₂Heat brought away by moisture phase change; c_{Phase change}Is the latent heat of vaporization of water.

From the above equation, water spray cooling (Q) is added₂) Then, cooling (Q) in the original air₁) On the basis, water cooling (Q) is added₂₁) And water phase change (Q)₂₂) The amount of heat of (a). Latent heat of vaporization of water when taking place the phase transition is about 2300KJ/Kg, and is the 500 times of water specific heat capacity from the order of magnitude alone, is 2300 times of air specific heat capacity, and the radiating effect of phase transition heat transfer can promote permanent magnetism transmission equipment's heat-sinking capability by a wide margin, sees from the in-service use condition, can satisfy 400~1000kw completely and use by the powerful permanent magnetism transmission equipment.

The above detailed description of the embodiments of the present invention has been provided with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and those skilled in the art can make several equivalent transformations and substitutions without departing from the principles of the present invention after learning the contents of the present invention.

Claims

1. The utility model provides an air cooling type heat abstractor, uses with permanent magnetism transmission equipment cooperation, its characterized in that: the air cooling type heat dissipation device comprises a water spray pipe and a water guide disc, wherein the water guide disc is arranged on a conductor disc of the permanent magnet transmission device, guide grooves are formed in the outer end face of the water guide disc at intervals along the circumferential direction of the water guide disc, the guide grooves are distributed outwards from the center of the water guide disc in a diverging manner, and one ends of the guide grooves, which are far away from the center of the water guide disc, are bent towards the same rotating direction, and the end parts of the guide grooves extend to the outer edge of the water guide disc; the pipe orifice of the water spray pipe is aligned with one end of the guide groove close to the center of the water guide disc; the nozzle of the spray pipe generates water mist, and the conductor disc rotates to drive the water mist to flow from one end of the guide groove close to the center of the water guide disc to the outer edge of the water guide disc so as to take away heat generated by the rotation of the conductor disc.

2. The air-cooled heat sink according to claim 1, wherein: the width of the guide groove is gradually increased from the center of the water guide disc to the outer edge of the water guide disc.

3. The air-cooled heat sink according to claim 1, wherein: the water guide disc and the conductor disc are integrally formed.

4. The air-cooled heat sink according to claim 1, wherein: the water guide disc is an attached aluminum disc and is fixed on the outer end face of the conductor disc through a connecting piece.

5. The air-cooled heat sink according to claim 4, wherein: the water guide disc at least comprises two disc bodies which are spliced into the water guide disc.

6. The air-cooled heat sink according to claim 1, wherein: the air cooling type heat dissipation devices are symmetrically arranged on the two conductor discs of the permanent magnet transmission equipment.

7. A permanent magnet transmission device, characterized in that: the permanent magnet transmission device dissipates heat by using the air cooling type heat dissipation device of claim 1.