CN203397229U - High and low temperature test box - Google Patents
High and low temperature test box Download PDFInfo
- Publication number
- CN203397229U CN203397229U CN201320394006.2U CN201320394006U CN203397229U CN 203397229 U CN203397229 U CN 203397229U CN 201320394006 U CN201320394006 U CN 201320394006U CN 203397229 U CN203397229 U CN 203397229U
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- box body
- fan
- bearing seat
- shaft
- cabinet
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Abstract
A high and low temperature test box includes an thermal-insulation sealed box body, a temperature control system for cooling and / or heating internal environment of the box body, and a circulation blower fan. The circulation blower fan includes: a motor, a fan shaft which is rotatably connected on the box body through a bearing, and a multi blade which is arranged inside the box body; one end of the fan shaft is coaxially fixed with the output shaft of the motor, the other end of the fan shaft passes through the box body and is connected with the multi blade; the box body comprises a box body outer wall, a box body inner wall, and a heat insulation layer which is filled between the box body inner wall and the box body outer wall; a bearing seat is fixed on the box body; the bearing seat includes a bearing seat body which is nested in the heat insulation layer and a flange which is connected on the box body outer wall; the flange is provided with a heat conduction connecting part which is parallel to the box body outer wall; and the heat conduction connecting part contacts the flange box body outer wall in a heat-conducting manner. The high and low temperature test box increases the heat dissipating capacity of the bearing seat, and solves the stability and reliability problems of cooperation among the shaft and the bearing seat and the bearing in the large temperature difference environment.
Description
Technical field
The utility model relates to a kind of high-low temperature test chamber, particularly across the large temperature difference, carries out the chamber of reliability testing.
Background technology
When the Design and manufacture of some important spare parts or finished product, for understanding product in the serviceability of extreme environment, conventionally can to product, carry out high temperature to low-temperature test, the reliability of working with testing product under extreme environment.
For warranty test case temperature evenly, the circulating fan vitals that is absolutely necessary.Because the variation of chamber temperature is often larger, what its temperature variation was larger can be between-100～+ 200 ℃, therefore the physical construction of fan will be subject to the test that this large temperature becomes equally, especially the motion parts that has matching relationship, as the axle in circulating fan structure, the cooperation of bearing seat and bearing, because the in the situation that of-100 ℃ for much more general temperature-resistant material 304 stainless steels that adopt of mechanical property that guarantee material are as the material of axle and bearing seat, simultaneously no matter you use ceramic bearing or their expansion coefficient of high-temperature bearing is less than 304 stainless steel materials more, and there is a larger difference.Therefore when temperature is too low, there will be the increase in the gap of fitted shaft and bearing, when excess Temperature, can cause again matching allowance excessive and cause bearing damage.
When the fan that therefore how to solve high-low temperature resistant chamber changes between from extremely low temperature to excessive temperature, the dilatational strain amount of fan shaft and bearing is different, causes short problem of fan fluctuation of service and serviceable life, is perplexing the R&D personnel always.
Summary of the invention
The purpose of this utility model be to provide a kind of can be by the high-low temperature test chamber of the temperature Quick diffusing of fan shaft.
For achieving the above object, the technical solution adopted in the utility model is: a kind of high-low temperature test chamber, comprise the casing that thermal insulation is airtight, the temperature control system that the internal environment of described casing is freezed and/or heated, be arranged on the circulating fan on described casing, described circulating fan comprises: the motor that is arranged on described casing outside by motor cabinet, by bearing rotary, be automatically connected in the fan shaft on described casing, be positioned at the multi-disc fan blade of described casing, one end of described fan shaft is coaxially fixedly connected with the output shaft of described motor, the other end of described fan shaft passes described casing and is connected with the fan blade described in multi-disc, described casing comprises cabinet exterior, cabinet wall and be filled in described cabinet wall and the thermofin between cabinet exterior, on described casing, be installed with bearing seat, described bearing seat comprises the bearing seat body being nested in described thermofin and the flange being connected on described cabinet exterior, described flange has the heat-conductive connection part that is parallel to described cabinet exterior, described heat-conductive connection part contacts with described flange cabinet exterior heat conduction.
Preferably, the heat-conductive connection part of described flange contacts with described motor cabinet heat conduction.
Preferably, described fan shaft is coaxially connected by shaft coupling with the output shaft of described motor, on described shaft coupling, coaxial welding has radiating fin, described radiating fin contacts with described shaft coupling heat conduction, described radiating fin is positioned at described motor cabinet, has a plurality of thermovents on described motor cabinet.
Preferably, described radiating fin includes a plurality of fan sheets that radially extend.
Preferably, described radiating fin is near described flange.
Because technique scheme is used, the utility model compared with prior art has following advantages: the utility model has strengthened the heat dissipation capacity of bearing seat, utilize the area of dissipation that cabinet exterior is larger, rapidly the heat on bearing seat is derived and dispersed, the heat that makes bearing seat absorbed heat and distribute reaches equilibrium state as far as possible, and then reduces the transmission to bearing.Thereby the temperature variation of fan shaft and bearing seat under large temperature difference environment is controlled preferably, so just solved stability and the integrity problem of large temperature difference environment lower shaft and bearing seat and bearing fit.
Accompanying drawing explanation
Accompanying drawing 1 is main cut-open view of the present utility model;
Accompanying drawing 2 is the sectional view of A-A in accompanying drawing 1;
Accompanying drawing 3 is the partial enlarged view at B place in accompanying drawing 1;
In above accompanying drawing: 1, circulating fan; 10, motor; 101, output shaft; 11, fan shaft; 110, shaft coupling; 12, bearing seat; 121, bearing seat body; 122, flange; 123, bearing; 124, bearing cap; 13, thermal insulation cover; 131, shell; 132, ceramic fiber; 14, fan blade seat; 141, axle mounting hole; 142, annular groove; 15, fan blade; 16, motor cabinet; 161, thermovent; 17, radiating fin; 171, fan sheet; 18, flat key;
2, casing; 21, cabinet exterior; 22, cabinet wall; 23, heat-insulation layer;
3, Wen Bianqu.
Embodiment
Below in conjunction with the drawings and the specific embodiments to the utility model be further described (described in this instructions " on ", D score direction is corresponding with the upper and lower position relation shown in accompanying drawing 1 respectively):
The utility model discloses a kind of high-low temperature test chamber, can carry out to product the shock-testing of ultimate temperature test and temperature variation.This chamber comprises the airtight casing of thermal insulation 2, the internal environment of described casing 2 is freezed and/or the temperature control system (not shown) that heats, is arranged on the circulating fan 1 on described casing 2.During test, article to be measured are placed in the Wen Bianqu 3 in case, temperature control system can be freezed or heat the environment temperature in Wen Bianqu 3 at short notice, and circulating fan 1 can make air in Wen Bianqu 3 form circulation, thereby makes in case temperature everywhere be uniformly distributed.
Described casing 2 comprises cabinet exterior 21, cabinet wall 22 and is filled in described cabinet wall 22 and the thermofin 23 between cabinet exterior 21, this cabinet exterior 21 and cabinet wall 22 are selected the stainless steel material that heat conductivility is good, and thermofin 23 can be selected expanded material.
As shown in Figure 1, described circulating fan 1 comprises: by motor cabinet 16 be arranged on described casing 2 outsides motor 10, the fan shaft 11 being connected with output shaft 101 coaxial transmissions of motor 10, be fixedly mounted on bearing seat 12 on casing 2, be fixedly connected on fan shaft 11 ends fan blade seat 14, be locked at the multi-disc fan blade 15 on this fan blade seat 14.
For reducing the impact of variation of ambient temperature on fan shaft, the utility model has adopted following measures:
One, utilize fin to dispel the heat to fan shaft, reduce the temperature of fan shaft.
Described fan shaft 11 upper end is coaxially fixedly connected with by shaft coupling 110 with the output shaft of described motor, the outside of shaft coupling 110 is welded with radiating fin 17, radiating fin 17 contacts with fan shaft 11 heat conduction, when test starts, motor 10 energisings, fan shaft 11 rotates, and drives radiating fin 17 to rotate, thereby rapidly the temperature of fan shaft 11 is distributed to external environment.
Because radiating fin 17 is positioned at motor cabinet 16, for making radiating fin 17 distribute heat as early as possible, on described motor cabinet 16, offer a plurality of thermovents 161.
In preferred embodiment of the present utility model, this radiating fin 17 includes a plurality of fan sheets 171 that radially extend, and in other embodiment, this radiating fin can also consist of multiple other form structures.
Radiating fin 17 is between motor 10 and bearing seat 12, and bottom is near bearing seat 12, so radiating fin 17 is when rotate, can also be to bearing seat 12 coolings.
Two, increase the contact area of bearing seat and cabinet exterior, the temperature of bearing seat is distributed by cabinet exterior.
As shown in the figure, described bearing seat 12 comprises the bearing seat body 121 being nested in described thermofin 23 and is connected to the flange 122 on described cabinet exterior 21, flange 122 has the heat-conductive connection part parallel with cabinet exterior 21, the heat-conductive connection part of described flange 122 contacts with described cabinet exterior 21 heat conduction, and is locked by bolt and motor cabinet 16 and cabinet exterior 21.
Described casing 2 inner sides have the bearing cap 124 that is fixedly mounted on described bearing seat 12 bottoms, and bearing cap 124 can further reduce the heat conduction of 3 pairs of bearing seats of Wen Bianqu, avoids steam to enter in bearing seat simultaneously.
Three, utilize thermal insulation cover to reduce the impact on fan shaft of temperature variation in isolated Wen Bianqu.
As shown in the figure, the outside that is positioned at the part fan shaft 11 of described casing 2 is arranged with thermal insulation cover 13.Described thermal insulation cover 13 comprises shell 131 and the insulation material being filled in described shell 131, and described insulation material is ceramic fiber 132, and the constituent material of described shell 131 is stainless steel.
For preventing the heat insulation effect of the influence of moisture ceramic fiber in chamber, described thermal insulation Tao two ends are all sealed.Say further, the upper end edge of described shell 131 radially extends and by described thermal insulation Tao13 upper end sealing, can avoid like this impact of moisture on ceramic fiber thermofin coefficient of heat conductivity to the axial line of described fan shaft.And thermal insulation Tao13 lower end is closely connected with fan blade seat 14, fan blade Zuo14 upper end offers the annular groove 142 that the external diameter with thermal insulation cover 13 matches, described thermal insulation cover 13 is stuck in this annular groove 142, thereby avoids steam to enter ceramic fiber from thermal insulation Tao bottom.
The most regions that are positioned at Wen Bianqu due to fan shaft are all covered by thermal insulation cover, and therefore, the gas greatly reducing in fan shaft and Wen Bianqu carries out the surface of contact of heat transfer contact, thereby reach, reduce the object that fan axle temperature becomes.
Four, reduce the heat conduction contact area of fan shaft and fan blade seat.
As shown in Figure 3, on described fan blade seat 14, there is axle mounting hole 141, described fan shaft 11 bottom is inserted in described axle mounting hole 141, the part inwall of described axle mounting hole is to projecting inward and be pushed against on the outer circle wall of described fan shaft 11, and the remainder inwall of axle mounting hole does not contact with described fan shaft 11.Because fan blade seat 14 and fan blade 15 are all directly exposed in Wen Bianqu 3, therefore its temperature changes very fast with test temperature, and fan blade seat 14 directly contacts with fan shaft 11 and heat will be directly passed to fan shaft 11, and after reducing both contacts area, can reduce heat-transfer rate.Preferably, the outer circle wall of described fan shaft 11 is less than non-contacting area with the area that the inwall of described axle mounting hole contacts.
In the present embodiment, described fan shaft 11 is connected by key with described fan blade seat 14.There are two parts in the region that the described interior and described fan shaft 11 of axle mounting hole contacts, and two parts region lays respectively at the two ends of described axle mounting hole.
Comprehensive above-mentioned introduction, the utility model one is to adopt fan shaft thermal insulation cover that exposed fan shaft lower end and Wen Bianqu at Wen Bianqu isolated, and changes the direct transmit mode of temperature to fan shaft, reduces the transmission of temperature to fan shaft.The 2nd, reduce fan blade seat the contact area connecting is installed with fan shaft, the transmission channels of temperature is diminished, effectively weaken the impact of temperature on fan shaft.The 3rd, by the shaft coupling outer wall welding radiating fin in fan shaft upper end, make fan on the one hand the temperature of fan shaft is delivered to surrounding environment fast by shaft coupling and radiating fin in High Rotation Speed process, the High Rotation Speed of radiating fin has been accelerated flowing of air on the other hand, makes it possible to by motor cabinet, the efficiency of the temperature of bearing seat environment transmission is towards periphery improved.Finally, the flange of bearing seat is arranged on cabinet exterior, with steel plate, contacts closely equally and the temperature of bearing seat can be delivered to environment space fast by casing large-area steel plate.
Above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow person skilled in the art can understand content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences of doing according to the utility model Spirit Essence change or modify, within all should being encompassed in protection domain of the present utility model.
Claims (5)
1. a high-low temperature test chamber, comprise the casing that thermal insulation is airtight, the temperature control system that the internal environment of described casing is freezed and/or heated, be arranged on the circulating fan on described casing, described circulating fan comprises: the motor that is arranged on described casing outside by motor cabinet, by bearing rotary, be automatically connected in the fan shaft on described casing, be positioned at the multi-disc fan blade of described casing, one end of described fan shaft is coaxially fixedly connected with the output shaft of described motor, the other end of described fan shaft passes described casing and is connected with the fan blade described in multi-disc, it is characterized in that: described casing comprises cabinet exterior, cabinet wall and be filled in described cabinet wall and the thermofin between cabinet exterior, on described casing, be installed with bearing seat, described bearing seat comprises the bearing seat body being nested in described thermofin and the flange being connected on described cabinet exterior, described flange has the heat-conductive connection part that is parallel to described cabinet exterior, described heat-conductive connection part contacts with described flange cabinet exterior heat conduction.
2. a kind of high-low temperature test chamber according to claim 1, is characterized in that: the heat-conductive connection part of described flange contacts with described motor cabinet heat conduction.
3. a kind of high-low temperature test chamber according to claim 1, it is characterized in that: described fan shaft is coaxially connected by shaft coupling with the output shaft of described motor, on described shaft coupling, coaxial welding has radiating fin, described radiating fin contacts with described shaft coupling heat conduction, described radiating fin is positioned at described motor cabinet, has a plurality of thermovents on described motor cabinet.
4. a kind of high-low temperature test chamber according to claim 3, is characterized in that: described radiating fin includes a plurality of fan sheets that radially extend.
5. a kind of high-low temperature test chamber according to claim 3, is characterized in that: described radiating fin is near described flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320394006.2U CN203397229U (en) | 2013-07-04 | 2013-07-04 | High and low temperature test box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320394006.2U CN203397229U (en) | 2013-07-04 | 2013-07-04 | High and low temperature test box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203397229U true CN203397229U (en) | 2014-01-15 |
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ID=49908751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320394006.2U Expired - Lifetime CN203397229U (en) | 2013-07-04 | 2013-07-04 | High and low temperature test box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203397229U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106681398A (en) * | 2017-02-15 | 2017-05-17 | 益和电气集团股份有限公司 | Temperature control method and system of high-low temperature alternating test box and test box |
| CN107748069A (en) * | 2017-12-06 | 2018-03-02 | 慈兴集团有限公司 | A kind of bearing immersion liquid experimental provision |
| CN112044481A (en) * | 2020-09-11 | 2020-12-08 | 上海志勤环境技术有限公司 | High-low temperature damp-heat test box |
-
2013
- 2013-07-04 CN CN201320394006.2U patent/CN203397229U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106681398A (en) * | 2017-02-15 | 2017-05-17 | 益和电气集团股份有限公司 | Temperature control method and system of high-low temperature alternating test box and test box |
| CN106681398B (en) * | 2017-02-15 | 2019-07-19 | 益和电气集团股份有限公司 | Temprature control method, system and the chamber of high low temperature cycles test case |
| CN107748069A (en) * | 2017-12-06 | 2018-03-02 | 慈兴集团有限公司 | A kind of bearing immersion liquid experimental provision |
| CN112044481A (en) * | 2020-09-11 | 2020-12-08 | 上海志勤环境技术有限公司 | High-low temperature damp-heat test box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140115 |