CN202851468U - Cooling device - Google Patents
Cooling device Download PDFInfo
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- CN202851468U CN202851468U CN 201220420696 CN201220420696U CN202851468U CN 202851468 U CN202851468 U CN 202851468U CN 201220420696 CN201220420696 CN 201220420696 CN 201220420696 U CN201220420696 U CN 201220420696U CN 202851468 U CN202851468 U CN 202851468U
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- tube
- cooling
- pump housing
- cooling unit
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Abstract
A cooling device is arranged on a pump body of a molecular pump and used for cooling the pump body and a cavity inside the pump body. The cooling device comprises a cooling pipe. Two ends of the cooling pipe are respectively matched with an inlet and an outlet prearranged on the pump body. The cooling pipe is used for enabling cooling medium to be imported in. The cooling pipe is arranged on the same horizontal plane in the pump body in a coiled mode. The cooling device is high in reliability and easy to assemble.
Description
Technical field
The utility model relates to the cooler technical field, particularly a kind of cooling unit for molecular pump.
Background technique
Molecular pump is a kind of pumping equipment commonly used, and its inside forms chamber, and pot motor is installed in chamber, and the rotor of High Rotation Speed and makes it the gas molecule in chamber compression obtain directed velocity to relief opening and discharges during work.Rotor in the molecular pump chamber can produce very large heat in the process of High Rotation Speed, in order to guarantee the molecule pump performance, need to cool off the molecular pump pump housing and chamber.The conventional method of prior art is straight forming tank on the aluminum pump housing, and passes into cooling water in the tank molecular pump is cooled off.This type of cooling is directly effective, but because the chemical stability of the aluminum pump housing is relatively poor, and cooling water and tank Long contact time are easy to occur chemical reaction, causes tank to be cooled aqueous corrosion and the situation of leaking, and has a strong impact on the working life of molecular pump.
In order to prevent the molecular pump aqueous corrosion that is cooled, increase the working life of molecular pump, prior art such as Chinese patent CN102374800A disclose a kind of Double-layer coiled pipe cooler, comprise cooler cylinder, be arranged on cooling water intake and coolant outlet on the cooler cylinder, duplex coil is housed in cooler cylinder, duplex coil is the internal and external layer structure that is formed by a pipeline coiling, the outer layer interface of layer structure stretches out cooler cylinder and connects cooling water intake, and interior layer interface stretches out cooler cylinder and connects coolant outlet.
If with the cooling unit of above-mentioned duplex coil structure as molecular pump, can prevent that cooling water from directly contacting with the pump housing of molecular pump, prevent the generation of the situation of leaking, guarantee the working life of molecular pump.But duplex coil is mainly used in being placed on inner barrel and by convection heat exchange the fluid in the cylindrical shell is cooled off, and the pressure change of molecular pump internal chamber is obvious, if duplex coil is directly installed in the chamber of molecular pump, duplex coil probably can't bear the variation of pressure and cause breaking, and reliability is very low; If duplex coil is arranged on outside the chamber, in order to guarantee the effect of cooling unit, then need the pump housing of duplex coil and molecular pump to fit tightly, but, the characteristics of coil pipe internal and external layer structure are so that the assembly crewman is difficult to by general technology coil pipe and the pump housing be fitted tightly in installation process, and assembling difficulty is very large.
The model utility content
Technical problem to be solved in the utility model is that molecular pump cooling unit of the prior art exists that reliability is low and assembling difficulty is large, and the cooling unit of the high and easy assembling of a kind of reliability is provided.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is as follows:
A kind of cooling unit is arranged on the pump housing of molecular pump, is used for cooling off the chamber in the described pump housing and the described pump housing; Described cooling unit comprises,
Cooling tube, its two ends cooperate with the entrance and exit that presets on the described pump housing respectively, are used for passing into cooling medium;
Described cooling tube dish is located on the interior same level of the described pump housing.
In the above-mentioned cooling unit, described cooling tube comprises inner tube, outer tube and connecting tube, and described connecting tube is used for connecting described inner tube and described outer tube, and described connecting tube equates with the caliber at the connection interface place of described inner tube, described outer tube.
In the above-mentioned cooling unit, the caliber of described inner tube, described outer tube and described connecting tube all equates.
In the above-mentioned cooling unit, described cooling tube is provided with pipe joint in the entrance and exit position that the described pump housing presets.
In the above-mentioned cooling unit, form be used to the groove that described cooling tube is set on the described pump housing.
In the above-mentioned cooling unit, described groove is arc groove.
In the above-mentioned cooling unit, also comprise:
Cover plate is used for described cooling tube is fixed on described groove, and described cover plate is the ring plate, and the relevant position of the described pump housing and described cover plate forms respectively for fixing tapped hole.
In the above-mentioned cooling unit, described cooling tube is copper pipe.
In the above-mentioned cooling unit, described connecting tube is the circular arc pipe.
In the above-mentioned cooling unit, the bending radius of described connecting tube is 10mm.
Technique scheme of the present utility model has the following advantages compared to existing technology:
1. cooling unit of the present utility model is arranged on the pump housing of molecular pump, and cooling unit comprises cooling tube, and the cooling tube two ends cooperate with the entrance and exit that presets on the pump housing respectively, be used for passing into cooling medium, and the cooling tube dish is located on the same level in the pump housing.Cooling tube is arranged on the outside of molecular pump chamber, has avoided the variation of air pressure in the chamber to the infringement of cooling tube, has significantly reduced the probability that cooling tube breaks, and has improved the reliability of cooling unit; And the cooling tube dish is located on the same level of the pump housing, and such design can directly be placed on the relevant position of the molecular pump pump housing when mounted in advance with the cooling tube moulding, has greatly reduced the assembling difficulty of cooling unit.
2. cooling unit of the present utility model, the caliber of inner tube, outer tube and connecting tube all equate.Such design, cooling medium is smooth flow in cooling tube, has avoided the damage of cooling tube internal turbulence to cooling tube, the working life of having improved cooling unit.
3. cooling unit of the present utility model forms on the pump housing be used to the groove that cooling tube is set, and groove is arc groove.Such design, cooling tube and the pump housing fit tightly, and the area of contact of cooling tube and the pump housing is larger, is conducive to the conduction of heat, has promoted the cooling effect of cooling unit.
4. cooling unit of the present utility model, cooling tube is copper pipe.Compare with aluminum material, the chemical stability of copper pipe is better, and cooling tube can not be subject to the corrosion of cooling medium and leak, and has improved the working life of cooling unit.
Description of drawings
For content of the present utility model is more likely to be clearly understood, the below is described in further detail the utility model, wherein according to specific embodiment of the utility model also by reference to the accompanying drawings
Fig. 1 is the assembling schematic diagram of the utility model cooling unit;
Fig. 2 is the plan view of the utility model pump housing;
Fig. 3 is the plan view of the utility model cooling tube.
Reference character is expressed as among the figure: the 1-pump housing, 11-groove, 12-chamber, 2-cooling tube, 21-inner tube, 22-connecting tube, 23-outer tube, 24-pipe joint, 3-cover plate.
Embodiment
Embodiment one
As Figure 1-3, be the preferred embodiment of cooling unit of the present utility model.Described cooling unit is arranged on the pump housing 1 of molecular pump, is used for cooling off the chamber 12 in the described pump housing 1 and the described pump housing 1, and described cooling unit comprises cooling tube 2 and cover plate 3.In the present embodiment, described cooling tube 2 is copper pipe.Further, described cooling tube 2 is the oxygen-free copper pipe of diameter 8mm.
Described cooling tube 2 coils on the same level of being located in the described pump housing 1, in the present embodiment, form be used to the groove 11 that described cooling tube 2 is set on the described pump housing 1, and described groove 11 is arc groove.The shape of described groove 11 is suitable for fitting tightly with described cooling tube 2, to promote the cooling effect of described cooling unit.
The two ends of described cooling tube 2 cooperate with the entrance and exit that presets on the described pump housing 1 respectively, are used for passing into cooling medium.In the present embodiment, described cooling tube 2 is provided with pipe joint 24 in the entrance and exit position that the described pump housing 1 presets.Further, described cooling medium is cooling water.
Described cooling tube 2 comprises inner tube 21, outer tube 23 and connecting tube 22, and wherein said connecting tube 22 is used for connecting described inner tube 21 and described outer tube 23.In the present embodiment, described inner tube 21, described outer tube 23 and described connecting tube 22 are formed in one.Further, described connecting tube 22 is the circular arc pipe, and the bending radius of described connecting tube 22 is 10mm.
In the present embodiment, described connecting tube 22 equates with the caliber at the connection interface place of described inner tube 21, described outer tube 23.Further, the caliber of described inner tube 21, described outer tube 23 and described connecting tube 22 all equates.
Described cover plate 3 is used for described cooling tube 2 is fixed on described groove 11, and described cover plate 3 is the ring plate, and the relevant position of the described pump housing 1 and described cover plate 3 forms respectively for fixing tapped hole.In the present embodiment, described tapped hole circumferentially evenly distributes along described cover plate 3, and further, the number of described tapped hole is four.
Embodiment two
Compare with embodiment one, in the present embodiment, also be provided with at least one supervisor between described inner tube 21 and the described outer tube 23, described connecting tube 22 is in turn connected to form described cooling tube 2 with described inner tube 21, described supervisor, described outer tube 23.In the present embodiment, described supervisor's number is one.
Correspondingly, compare with embodiment one, the described groove 11 of the present embodiment also needs to adjust accordingly, so that described groove 11 is suitable for fitting tightly with described cooling tube 2.
In other embodiments, the diameter of described cooling tube 2 can be according to the dimensional changes of the described pump housing 1 and described chamber 12, and correspondingly, the size of described groove 11 also needs to adjust accordingly, so that described cooling tube 2 can fit tightly with the described pump housing 1.
In other embodiments, the bending radius of described connecting tube 22 can also be 15mm, 18mm etc.
In other embodiments, the number of described tapped hole can also be three, five etc.
In other embodiments, described supervisor's number can also be two or three, according to the difference of the described pump housing 1 size, can choose different supervisor's numbers, and correspondingly, described groove 11 also needs to adjust accordingly.
In other embodiments, described cooling medium also can be cooling liquid or cooled gas, can realize the purpose of this utility model equally.
In other embodiments, described cooling tube 2 can also be minute body formed.
Obviously, above-described embodiment only is for example clearly is described, and is not the restriction to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all mode of executions exhaustive.And the apparent variation of being extended out thus or change still are among the protection domain of the utility model creation.
Claims (10)
1. a cooling unit is arranged on the pump housing (1) of molecular pump, is used for cooling off the chamber (12) in the described pump housing (1) and the described pump housing (1); Described cooling unit comprises,
Cooling tube (2), its two ends cooperate with the entrance and exit that presets on the described pump housing (1) respectively, are used for passing into cooling medium;
It is characterized in that: described cooling tube (2) dish is located on the interior same level of the described pump housing (1).
2. cooling unit according to claim 1, it is characterized in that: described cooling tube (2) comprises inner tube (21), outer tube (23) and connecting tube (22), described connecting tube (22) is used for connecting described inner tube (21) and described outer tube (23), and described connecting tube (22) equates with the caliber at the connection interface place of described inner tube (21), described outer tube (23).
3. cooling unit according to claim 2 is characterized in that: the caliber of described inner tube (21), described outer tube (23) and described connecting tube (22) all equates.
4. cooling unit according to claim 3, it is characterized in that: described cooling tube (2) is provided with pipe joint (24) in the entrance and exit position that the described pump housing (1) presets.
5. arbitrary described cooling unit is characterized in that: form be used to the groove that described cooling tube (2) are set (11) on the described pump housing (1) according to claim 1-4.
6. cooling unit according to claim 5, it is characterized in that: described groove (11) is arc groove.
7. cooling unit according to claim 6 is characterized in that: also comprise:
Cover plate (3) is used for described cooling tube (2) is fixed on described groove (11), and described cover plate (3) is the ring plate, and the relevant position of the described pump housing (1) and described cover plate (3) forms respectively for fixing tapped hole.
8. cooling unit according to claim 7, it is characterized in that: described cooling tube (2) is copper pipe.
9. cooling unit according to claim 8, it is characterized in that: described connecting tube (22) is the circular arc pipe.
10. cooling unit according to claim 9, it is characterized in that: the bending radius of described connecting tube (22) is 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220420696 CN202851468U (en) | 2012-08-23 | 2012-08-23 | Cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220420696 CN202851468U (en) | 2012-08-23 | 2012-08-23 | Cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202851468U true CN202851468U (en) | 2013-04-03 |
Family
ID=47982675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220420696 Expired - Fee Related CN202851468U (en) | 2012-08-23 | 2012-08-23 | Cooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202851468U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443586A (en) * | 2015-12-31 | 2016-03-30 | 上海电气凯士比核电泵阀有限公司 | Cooling structure for thrust bearing lubricating oil of motor-driven auxiliary water-feeding pump |
| CN116498553A (en) * | 2023-04-18 | 2023-07-28 | 北京通嘉宏瑞科技有限公司 | Vacuum pump stator assembly |
| US12018681B1 (en) * | 2023-05-16 | 2024-06-25 | Elivac Inc. | Oil box device of a roots vacuum pump with a crossed cooling water tube set |
-
2012
- 2012-08-23 CN CN 201220420696 patent/CN202851468U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443586A (en) * | 2015-12-31 | 2016-03-30 | 上海电气凯士比核电泵阀有限公司 | Cooling structure for thrust bearing lubricating oil of motor-driven auxiliary water-feeding pump |
| CN116498553A (en) * | 2023-04-18 | 2023-07-28 | 北京通嘉宏瑞科技有限公司 | Vacuum pump stator assembly |
| US12018681B1 (en) * | 2023-05-16 | 2024-06-25 | Elivac Inc. | Oil box device of a roots vacuum pump with a crossed cooling water tube set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20210823 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |