CN201828619U - Drying oven special for testing thermal stability of electrical appliance product - Google Patents
Drying oven special for testing thermal stability of electrical appliance product Download PDFInfo
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- CN201828619U CN201828619U CN2010205112034U CN201020511203U CN201828619U CN 201828619 U CN201828619 U CN 201828619U CN 2010205112034 U CN2010205112034 U CN 2010205112034U CN 201020511203 U CN201020511203 U CN 201020511203U CN 201828619 U CN201828619 U CN 201828619U
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Abstract
The utility model provides a drying oven special for testing the thermal stability of an electrical appliance product. The drying oven is characterized by comprising an external shell, a middle shell, an internal shell and an insulating layer, wherein the insulating layer which is made of an insulating material is positioned between the external shell and the middle shell; an internal heating medium is filled between the middle shell and the internal shell, so that the internal shell serves as an internal heating radiator; the surface temperature of the internal shell is measured by a thermocouple, is transmitted to an internal heating controller, and is compared with a set value and judged by the internal heating controller so as to determine whether the internal heating controller is heated or not; and the internal heating medium which is heated to a certain value is discharged from an internal heating medium discharge opening and reflows through an internal heating medium reflux inlet, so that the medium between the middle shell and the internal shell is circulated continuously and constant-temperature heat supply in the drying oven is ensured. Temperature is controlled independently by a heater and constant-temperature heating is performed at a set temperature, so that the aims of well reflecting the operating status of an electrical appliance by a test and enhancing the operation reliability of the electrical appliance product can be fulfilled.
Description
Technical field
The utility model relates to electric equipment products heat stabilization test technical field, relates in particular to a kind of electric equipment products heat stabilization test special bake oven.
Background technology
The mode that present baking oven is all sent by air after the air heat in the direct heated oven heats the electrical equipment test product in the baking oven.When air heat arrives design temperature, by electrothermal relay excision heating source; When air is lower than design temperature, inserts heating source by electrothermal relay and heat.This mode is not as adopting air supply mode, and then the temperature in the baking oven will depend on the thermal value of test product and the heat dissipation capacity of baking oven; As the heat dissipation capacity of the baking oven thermal value greater than test product, temperature will be fluctuation up and down around design temperature in the baking oven.Greater than the baking oven heat dissipation capacity, temperature will reach new balance in the some temperature that are higher than design temperature in the baking oven as the test product thermal value.But which kind of state no matter, it is the radiator of benchmark with the environment temperature that baking oven all is one, and test product heat radiation is that to be under the condition that high wind blows test condition and actual motion condition difference too big, and this test condition of service condition when calm is wider pine, thereby causes the product of stand the test be able to not normally move.
Heat existing problem for solving still air, baking oven often adopts the high wind heating of design temperature at present.Though this type of heating can make the temperature stabilization in the baking oven, this test method of one does not meet standard-required; Its two by the cooling power of high wind much larger than still air.Therefore cause the result of this method test to be: the temperature rise when the temperature rise meeting under the electric equipment products test condition is lower than actual motion, the i.e. product of the stand the test stable operation under service condition surely that differs.
Therefore, be necessary to provide a kind of electric equipment products heat stabilization test special bake oven, make electric equipment products in baking oven, carry out heat stabilization test and can reflect the situation of actual motion preferably, and the electric equipment products quality is made correct evaluation.
Summary of the invention
Technical problem to be solved in the utility model is: for solving the baking oven in the electric equipment products heat stabilization test in the prior art since adopt directly electric equipment products are heated or since adopt high wind to heat to bring cause test findings inaccurate, can't accurately record the problem of test figure, and propose a kind of new electric equipment products heat stabilization test special bake oven.
The technical scheme that the utility model adopted is: a kind of electric equipment products heat stabilization test special bake oven, it is characterized in that, comprise shell body, middle shell, inner housing and the heat-insulation layer that constitutes by insulation material between shell body and middle shell, be filled with heating medium between the middle shell of six faces and the inner housing, so that inner housing adds the effect of heat radiator in playing, the temperature on inner housing surface is measured by electroheat pair, and import interior heating controller into, relatively judge through interior heating controller and setting value, heating controller heat temperature raising whether in determining, the interior heating medium that heats to certain value is sent by interior heating medium and mouthful is sent, reflux by interior heating medium refluxing opening, so that the medium between middle shell and inner housing constantly circulates, guarantee the constant temperature heat supply in the baking oven.The technique effect that brings thus is at least: the utility model adopts well heater independence temperature control, heated at constant temperature under design temperature, the outer static heated condition of air in the baking oven, the baking oven air themperature only is used to measure and is not used in the method that control is heated, and reaches the purpose of carrying out heat stabilization test in still air of standard-required.The atmospheric environment of the design temperature of peripheral well heater simulation simultaneously, and the temperature field of electrical equipment test product is distributed, radiating condition and physical condition are close.Therefore, the electrical equipment heat stabilization test of adopting this baking oven to carry out can be reacted the hot situation of electric equipment products more truly, reaches the purpose that guarantees the electric equipment products reliability.
Aforesaid electric equipment products heat stabilization test special bake oven, it is characterized in that: further comprise an outer heating system, described outer heating system comprises that an outer well heater, outer heating medium are sent mouthful, an outer heating medium refluxing opening and an outer heater controller, electric equipment products are heated by outer well heater, heating medium is sent mouth by outer heating medium and is sent, reflux by outer heating medium refluxing opening, the operation of outer well heater, stop by outer heating controller control.The technique effect that brings thus is at least: because lower to the test product efficiency of heating surface in still air, in order to address this problem, increase by an outer heating system, so at first heat by outer heating, when test product is heated to set condition, outer well heater is just out of service, only by internal heater and inner housing heat supply work, reaches electric equipment products are finished the thermal stability test under the condition of still air, surrounding enviroment temperature constant effect.
Aforesaid electric equipment products heat stabilization test special bake oven, it is characterized in that: the static interior heating system that interior heating medium, middle shell, inner housing and Nei Jia heat radiator are constituted, can be undertaken by under the design temperature test product being carried out heated at constant temperature by heating system in static by can thermostatically controlled direct heating system substituting.The technique effect that brings thus is at least: undertaken by under the design temperature test product being carried out heated at constant temperature by heating system in static, then having shell to loose naturally when unnecessary heat removes, and the temperature constant state that keeps static internal heater place to set, reaching like this around the baking oven all is temperature constant states, and guarantees that test product is that air is to finish heat stabilization test under the static condition in baking oven.
Aforesaid electric equipment products heat stabilization test special bake oven is characterized in that: can the air channel be set at middle shell and internal heater heating radiator, carry out wind-cooling heat dissipating.The technique effect that brings thus is at least: can accelerate the radiating effect of shell, and the temperature constant state that keeps static internal heater place to set reaches electric equipment products are finished the thermal stability test under the condition of still air, surrounding enviroment temperature constant effect.
The beneficial effects of the utility model are: owing to arrange well heater on the baking oven inwall, heter temperature independently is provided with and controls, be not subjected to the influence of air themperature in the baking oven, heter temperature in the baking oven wall is provided with according to the serviceability temperature upper limit of electric equipment products, and be controlled on certain given temperature value, simulate infinitely-great atmospheric environment with limited space like this.When electric equipment products are carried out heat stabilization test in this baking oven, thermal value regardless of electric equipment products, owing to be subjected to the constraint of a steady temperature field all around, the temperature field of distribution all very similar electric equipment products in temperature field under the calm method of operation under the true service condition of its electric equipment products.And the still air in the baking oven is also with the calm condition correspondence under the atmospheric conditions.When the test product thermal value is big, six heated at constant temperature bodies will play the constant temperature heat-absorbing action, and six faces still are to remain on the design temperature, and but test product thermal value hour, six heated at constant temperature bodies play heat effect to test product.Therefore, the radiating condition of its electric equipment products also conforms to service condition.The better purpose of reflection electric operation situation of test can be reached like this, and the purpose that improves the electric equipment products operational reliability can be reached.Simulation true environment preferably, it is the situation of the Infinite bus system of a constant temperature, and electric equipment products can effectively be accomplished in still air in heat stabilization test, periphery is for carrying out in the steady temperature condition, and make test can good reproduction real running environment, and make test findings truer, reliable, help guaranteeing the reliability service of electric product.
Description of drawings
Fig. 1 is the structural representation of the electric equipment products heat stabilization test special bake oven of the utility model first embodiment;
Fig. 2 is the structural representation of the electric equipment products heat stabilization test special bake oven of the utility model second embodiment;
Fig. 3 is the structural representation of the electric equipment products heat stabilization test special bake oven of the utility model the 3rd embodiment.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
The explanation of mark among Fig. 1: the 1-shell body, heating medium in the 2-heat-insulation layer, 3-, the 4-middle shell, heating medium is sent mouth in the heating medium refluxing opening in the 5-inner housing, 6-, 7-, and heating controller in the 8-internal heater, 9-adds heat radiator, the 15-thermopair in the 14-.
The outer heating medium of the explanation of mark: 10-is sent mouth among Fig. 2, the outer heating medium refluxing opening of 11-, the outer well heater of 12-, the outer heater controller of 13-.
As shown in Figure 1, fill insulation material between the shell body 1 of the electric equipment products heat stabilization test special bake oven of the utility model first embodiment and the middle shell 4, constituting heat-insulation layer 2.This double Shell that accompanies heat-insulation layer constitutes the seal of a band door.5 of middle shell 4 and inner housings form one have in heating medium 3, make inner housing 5 add heat radiator 14 in playing a part, the temperature on inner housing 5 surfaces is measured by electroheat pair 15, imports interior heating controller 9 into.Relatively judge with setting value through interior heating controller 9, determine whether heat temperature raising of internal heater 8, the interior heating medium 3 that heats to certain value is sent mouthfuls 7 by interior heating medium and is sent, reflux by interior heating medium refluxing opening 6, the medium of 5 of middle shell 4 and inner housings is constantly circulated, guarantee the constant temperature heat supply in the baking oven.Inner housing 5 air and test product heat supply in baking oven when test product places baking oven of the present utility model like this, test product is big or small in the heat stabilization test heating, whether generating heat to all whether heating with internal heater 8 has nothing to do.Can guarantee like this that test product is strict in heat stabilization test carries out in still air by standard-required.The thermostatic control of the inner housing of 6 (or inwalls) by baking oven, simulation true environment preferably, it is the situation of the Infinite bus system of a constant temperature, and electric equipment products can effectively be accomplished in still air in heat stabilization test, periphery is for carrying out in the steady temperature condition, and make test energy good reproduction real running environment, and make test findings truer, reliable, help guaranteeing the reliability service of electric product.
Because lower to the test product efficiency of heating surface in still air, for a change this situation has just had second embodiment.
As shown in Figure 2, the utility model second embodiment has increased outer heating system on the basis of first embodiment, like this when doing the electric equipment products heat stabilization test, heat by outer well heater 12 earlier, heating medium is sent mouth 10 by outer heating medium and is sent, reflux by outer heating medium refluxing opening 11, the operation of outer well heater 12, stop by outer heating controller 13 controls.When test product was heated to set condition, outer well heater 12 was out of service, only by internal heater 8 and inner housing 5 heat supply work, reaches electric equipment products and finish the thermal stability test under the condition of still air, surrounding enviroment temperature constant.
In case study on implementation, the static interior heating system that interior heating medium 3, middle shell 4, inner housing 5 and internal heater 8 are constituted, also can directly make can thermostatically controlled direct heating system.This has just constituted the 3rd embodiment of the present utility model.As shown in Figure 3, in the 3rd embodiment, undertaken by under the design temperature test product being carried out heated at constant temperature by heating system in static.When unnecessary heat, then have shell to loose naturally and remove, also can middle shell 4 with in add heat radiator 14 air channel be set, carry out wind-cooling heat dissipating.And the temperature constant state that keeps static internal heater 14 places to set, reaching like this around the baking oven all is temperature constant states, and guarantees that test product is that air is to finish heat stabilization test under the static condition in baking oven.
Claims (4)
1. electric equipment products heat stabilization test special bake oven, it is characterized in that, comprise shell body, middle shell, inner housing, and the heat-insulation layer that constitutes by insulation material between shell body and middle shell, be filled with heating medium between the middle shell of six faces and the inner housing, so that inner housing adds the effect of heat radiator in playing, the temperature on inner housing surface is measured by electroheat pair, and import interior heating controller into, relatively judge through interior heating controller and setting value, heating controller heat temperature raising whether in determining, the interior heating medium that heats to certain value is sent by interior heating medium and mouthful is sent, reflux by interior heating medium refluxing opening,, guarantee the constant temperature heat supply in the baking oven so that the medium between middle shell and inner housing constantly circulates.
2. electric equipment products heat stabilization test special bake oven according to claim 1, it is characterized in that: further comprise an outer heating system, described outer heating system comprises that an outer well heater, outer heating medium are sent mouthful, an outer heating medium refluxing opening and an outer heater controller, electric equipment products are heated by outer well heater, heating medium is sent mouth by outer heating medium and is sent, reflux by outer heating medium refluxing opening, the operation of outer well heater, stop by outer heating controller control.
3. electric equipment products heat stabilization test special bake oven according to claim 1, it is characterized in that: the static interior heating system that interior heating medium, middle shell, inner housing and Nei Jia heat radiator are constituted, can be undertaken by under the design temperature test product being carried out heated at constant temperature by heating system in static by can thermostatically controlled direct heating system substituting.
4. electric equipment products heat stabilization test special bake oven according to claim 1 is characterized in that: can the air channel be set at middle shell and internal heater heating radiator, carry out wind-cooling heat dissipating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205112034U CN201828619U (en) | 2010-08-31 | 2010-08-31 | Drying oven special for testing thermal stability of electrical appliance product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205112034U CN201828619U (en) | 2010-08-31 | 2010-08-31 | Drying oven special for testing thermal stability of electrical appliance product |
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| Publication Number | Publication Date |
|---|---|
| CN201828619U true CN201828619U (en) | 2011-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205112034U Expired - Lifetime CN201828619U (en) | 2010-08-31 | 2010-08-31 | Drying oven special for testing thermal stability of electrical appliance product |
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| Country | Link |
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| CN (1) | CN201828619U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968521A (en) * | 2010-08-31 | 2011-02-09 | 国网电力科学研究院 | Thermal stability test heating method for electric appliance and special oven thereof |
| CN103389752A (en) * | 2013-07-24 | 2013-11-13 | 北京七星华创电子股份有限公司 | Temperature control method for semiconductor heat treatment equipment |
-
2010
- 2010-08-31 CN CN2010205112034U patent/CN201828619U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968521A (en) * | 2010-08-31 | 2011-02-09 | 国网电力科学研究院 | Thermal stability test heating method for electric appliance and special oven thereof |
| CN103389752A (en) * | 2013-07-24 | 2013-11-13 | 北京七星华创电子股份有限公司 | Temperature control method for semiconductor heat treatment equipment |
| CN103389752B (en) * | 2013-07-24 | 2015-12-09 | 北京七星华创电子股份有限公司 | For the temperature-controlled process of semiconductor heat treatment equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110511 |