RU2408858C1 - Test chamber - Google Patents

Abstract

FIELD: physics.

SUBSTANCE: apparatus chamber has a housing in which there are sensors of parametres of the test object, a cooling system, a heating system, a ventilator and a door for loading the test object. Outputs of the sensors of parametres of the test object are connected to inputs of a control unit, whose outputs are connected to control inputs of the cooling system, the heating system and the ventilator. Air from the ventilator is fed by one or more flexible perforated air ducts whose length is sufficient for supplying air to any part of the chamber depending on the configuration of the test object.

EFFECT: temperature uniformity due to guaranteed circulation of air in the entire volume and absence of stagnant areas.

1 dwg

Description

The invention relates to techniques for climate testing of various, in particular radio engineering, products.

Known test chambers for testing products containing a thermally insulated container with a door, an air humidifier, a compressor, a heating system, a fan, an impeller of which is integrated in the internal volume of a thermally insulated container, a control system including temperature sensors and a temperature controller, a humidity sensor and a humidity controller, the control system is configured to maintain temperature and humidity parameters within predetermined limits.

(2003120414, B01L 1/00, 2004/12/27)

The disadvantage of this test chamber is the slow mixing of the air mass in the chamber volume, the presence of stagnant zones when testing spatial configuration products.

Also known is a test chamber for climatic tests, containing a heat-insulating casing, inside of which there is a heat exchanger, a cylindrical test chamber with slots along its generatrix, a fan, a suction and discharge channel made of a spiral with a variable cross section and located on the cylindrical surface of the chamber.

(1385906, H01J 9/42, 1995/05/20)

However, if it is necessary to test products of a spatial configuration, stagnant zones are formed due to the impossibility of changing the direction of the air flow in the chamber.

The closest in technical essence is a climate chamber containing a housing in which the sensors of the parameters of the test object are located, a cooling system, a heating system and a fan, while the outputs of the sensors of the parameters of the test object are connected to the inputs of the control unit, the outputs of which are connected to the control inputs of the cooling system, heating and fan systems.

(See JP 2008145381, G01N 17/00, 2008.06.26)

However, if it is necessary to carry out climate tests of spatial configuration products, ensuring uniform temperature distribution is difficult due to the fact that the air flow from the fan does not change direction and does not accelerate stagnant zones.

The technical result of the invention lies in the possibility of supplying air flow from the fan to any point in the chamber when testing large-sized products of a spatial configuration or testing a large number of small-sized products.

To achieve the technical result, a test chamber is proposed comprising a housing in which the sensors of the parameters of the test object are located, a cooling system, a heating system, a fan and a door for loading the test object, while the outputs of the sensors of the parameters of the test object are connected to the inputs of the control unit, the outputs of which are connected with control inputs for the cooling system, heating system and fan, while one or more flexible air flows from the fan at any point in the chamber, providing a uniform and stable temperature field inside the chamber.

An additional difference is that the flexible duct is perforated.

The drawing shows a functional diagram of the test chamber.

1 - camera body;

2 - parameters sensors;

3 - cooling system;

4 - heating system;

5 - fan;

6 - door for loading the test object;

7 - control unit;

8 - test object;

9 - flexible perforated ducts.

The control unit is equipped with a system for regulating and maintaining the temperature in the chamber within the specified limits.

The test chamber contains a housing 1. In the housing there is a door 6, sensors 2 of the parameters of the test object, cooling system 3, heating system 4, fan 5, one or more flexible perforated ducts 9. The outputs of the sensors of the parameters of the test object are connected to the inputs of the control unit 7, outputs which are connected to the control inputs of the cooling system, heating system and fan. The test object 8 is located in the camera body.

The test chamber operates as follows.

The test object 8 is installed in the chamber, depending on the configuration of the test object, one or more flexible ducts are placed in the chamber. The control unit 7 controls the heating system, cooling system, fan to maintain the temperature in the chamber within the specified limits. The bulk of the air flow is supplied to hard-to-reach places, and part of the air flow goes through the hole in the perforated duct.

Claims (1)

A test chamber, comprising a housing in which the parameters of the test object are located, a cooling system, a heating system, a fan and a door for loading the test object, while the outputs of the parameters of the test object are connected to the inputs of the control unit, the outputs of which are connected to the control inputs of the cooling system, heating system and fan, characterized in that the air from the discharge opening of the fan is supplied to the chamber body by one or more flexible perforated air ohm length sufficient air supply at any point of the chamber.