RU67265U1 - CAMERA TEST - Google Patents

Abstract

The utility model relates to the woodworking industry and can be used in devices for testing wood materials or products from them for the emission of volatile substances, in particular, when testing wood boards, for example, to determine the emission of formaldehyde from them. The technical task of the utility model is to increase the reliability of the measurement parameters of the sample of the studied air. The test chamber 1 includes a thermally insulated casing 2, an air duct 3 for supplying air to the chamber 1, units 4 and 5, respectively, to provide the necessary humidity and temperature of the air supplied to the chamber, an air flow meter 6, a device 7 for monitoring the environmental parameters in the chamber 1, and a recording unit for recording 8 sample parameters test air. The air supplied to the chamber 1 is supplied from the external environment through an air purifier 25. The purified air is supplied by the compressor 26 to the air duct 3. The necessary humidity of the air supplied to the chamber 1 is provided by means of a dehumidifier 21 and a humidifier 22 of the unit 4. The humidity control and corresponding control of the operation of the unit 4 are carried out device 7 using the sensor 13. The required temperature of the air supplied to the chamber 1, is provided using the circuits 11 and 12, respectively, of the heating and cooling included in the node 5. Temperature control swarm coolant 10 and the corresponding control unit 5 operation unit 7 is carried by the sensor 14. The air passing through the duct 3 section 16 acquires the coolant temperature. The prepared air passes through a flow meter 6, enclosed in a casing 20, which eliminates fluctuations (deviations) in the temperature of the air entering the chamber 1. The air entering the chamber 1 by means of fans 29 passes through the openings of the shelf 24 and washes the test sample, capturing the released formaldehyde and other pollutants. Passing through the chamber 1, the contaminated air enters the registration unit 8 of the sample parameters of the test air. The casing 20 eliminates fluctuations (deviations) in the temperature of the air leaving the chamber 1, thereby increasing the reliability of the measurements. 4 p. Fs, 1 nez. P.

Description

The utility model relates to the woodworking industry and can be used in devices for testing wood materials or products from them for the emission of volatile substances, in particular, when testing both finished and unfinished wood boards, for example, to determine the emission of formaldehyde from them.

A known test chamber, including a thermally insulated housing, an air duct for supplying air to the chamber, nodes for providing the necessary humidity and temperature of the air supplied to the chamber, an air flow meter, a device for monitoring environmental parameters in the chamber and a unit for recording parameters of the sample of test air. (RF patent for utility model, N 23408, B27N 3/18, G01N 21/78, publ. 06/20/02).

A test chamber is also known, including a thermally insulated casing, an air duct for supplying air to the chamber, nodes for providing the necessary humidity and temperature of the air supplied to the chamber, an air flow meter, an instrument for monitoring environmental parameters in the chamber, and a unit for registering sample parameters of the test air. (RF patent for utility model, N 41270, B27N 3/18, publ. 06/20/02 - prototype).

The disadvantages of the known technical solutions are the low accuracy of the measurements due to the imperfect design of the unit for recording the sample parameters of the test air and its remoteness from the camera body, as well as the insufficiently effective design of the unit to ensure the necessary temperature of the air supplied to the chamber.

The technical task of the utility model is to increase the reliability of the measurement parameters of the sample of the studied air.

The stated technical problem is achieved by the fact that in the test chamber, including a thermally insulated body, an air duct for supplying air to the chamber, nodes to ensure the necessary humidity and temperature of the air supplied to the chamber,

air flow meter, a device for monitoring the parameters of the environment in the chamber and a unit for recording the parameters of the sample of the test air, - a unit for ensuring the required temperature of the air supplied to the chamber is made in the form of a jacket with a coolant mounted inside the chamber along its perimeter with the heating and heating circuits located in it control of environmental parameters in the chamber is equipped with sensors for air humidity and coolant temperature, the air duct to the chamber is equipped with an air flow regulator, at ohm comprises a portion extending through the jacket to the coolant being connected to the air flow meter, and a node registration parameters of the test samples of air and an air flow meter mounted on released from isolation chamber wall sections and provided with covers that are made, for example, removable transparent and insulating.

The utility model has the following differences from the prototype:

- the unit for ensuring the necessary temperature of the air supplied to the chamber is made in the form of a shirt mounted inside the chamber along its perimeter with a coolant with heating and cooling circuits placed in it;

- the device for monitoring the environmental parameters in the chamber is equipped with sensors for humidity and temperature of the coolant;

- the air supply duct to the chamber is equipped with an air flow regulator, while it contains a section passing through a jacket with a coolant connected to an air flow meter;

- the unit for recording the parameters of the sample of the studied air and the air flow meter are mounted on the sections of the chamber wall freed from insulation and equipped with casings;

- casings are made, for example, removable transparent and heat insulating.

This will increase the reliability of the measurement parameters of the test air sample.

No technical solutions were found in the patent information fund we reviewed with the claimed combination of distinctive features.

The utility model is applicable and will be used in industry in 2008.

In FIG. shows a diagram of the test chamber.

The test chamber 1 includes a thermally insulated housing 2, an air duct 3 for supplying air to the chamber 1, units 4 and 5, respectively, to provide the necessary humidity and temperature of the air supplied to the chamber, an air flow meter 6, a device 7 for monitoring the environmental parameters in the chamber 1, and a registration unit 8 for parameters

samples of test air. The node 5 to ensure the necessary temperature of the air supplied to the chamber 1 is made in the form of a shirt 9 mounted inside the chamber 1 along its perimeter with a heat carrier 10 with heating and cooling circuits 11 and 12 respectively installed in it, the device 7 for monitoring the environmental parameters in the chamber 1 is equipped with sensors 13 and 14, respectively, of the air humidity and temperature of the coolant 10, the air duct 3 for supplying air to the chamber 1 is equipped with an air flow regulator 15, while it contains a section 16 passing through the jacket 9 with the coolant 10, connected connected with the air flow meter 6, and the recording unit 8 of the test air sample parameters and the air flow meter 6 are mounted on the sections 17 and 18 of the wall 19 of the chamber 1 freed from insulation and equipped with casings 20, which are made, for example, removable transparent and heat-insulating. The node 4 to ensure the necessary humidity supplied to the chamber 1 of the air contains a desiccant 21 refrigerated or sorption type and a humidifier 22 (evaporator or sprayer, dispersant). For placement in the chamber 1 of the test wood sample 23 in the chamber there is a perforated shelf 24.

Test chamber 1 is part of a device for testing wood materials for their emission of volatile substances. A device for testing wood materials for their emission of volatile substances also includes an air purifier 25 (filter of any type), a compressor 26 (or a gas cylinder), a pressure regulator 27, a circulation pump 28 of the coolant 10, and fans are installed in the upper and lower parts of the chamber 1 29 internal air circulation.

Before starting work, the test chamber 1 is thoroughly washed and wiped, then for 30 minutes. supply air to remove adsorbed substances from hoses and pipelines. In the prepared test chamber 1 load the test wood sample 23, which is located on the shelf 24. Turn on the fans 29.

The air supplied to the chamber 1 enters from the external environment through an air purifier 25 of any type selected depending on the specifics of the pollutants present in the environment. The purified air is supplied by compressor 26 to the duct 3. The necessary humidity of the air supplied to the chamber 1 is provided using a dehumidifier 21 and a humidifier 22 of the unit 4. Monitoring of air humidity and corresponding control of the operation of the unit 4 is carried out by the device 7 using the sensor 13.

The required temperature of the air supplied to the chamber 1 is provided by the circuits 11 and 12, respectively, of heating and cooling included in the node 5.

Monitoring the temperature of the coolant 10 and the corresponding control of the operation of the node 5 is carried out by the device 7 using the sensor 14. The air passing through section 16 of the duct 3, acquires the temperature of the coolant.

The prepared air passes through a flow meter 6, enclosed in a casing 20, which eliminates fluctuations (deviations) in the temperature of the air entering the chamber 1. The air entering the chamber 1 by means of fans 29 passes through the openings of the shelf 24 and washes the test sample, capturing the released formaldehyde and other pollutants.

Passing through the chamber 1, the contaminated air enters the registration unit 8 of the sample parameters of the test air. The casing 20 eliminates fluctuations (deviations) in the temperature of the air leaving the chamber 1, thereby increasing the reliability of the measurements.

The utility model allows to increase the reliability of the measurement parameters of the test air sample.

Claims (4)

1. Test chamber, including a thermally insulated body, an air duct for supplying air to the chamber, nodes for providing the necessary humidity and temperature of the air supplied to the chamber, an air flow meter, an instrument for monitoring environmental parameters in the chamber, and a unit for recording parameters of the sample of test air, characterized in that the providing unit the required temperature of the air supplied to the chamber is made in the form of a shirt with a heat carrier mounted inside the chamber along its perimeter with heating and cooling circuits placed in it I am a heat carrier, the device for monitoring the parameters of the medium in the chamber is equipped with sensors for air humidity and temperature of the coolant, the air duct for supplying air to the chamber is equipped with an air flow regulator, while it contains a section passing through the jacket with the coolant connected to the air flow meter, and the unit for recording the parameters of the sample under study air and air flow meter are mounted on exempted from insulation sections of the chamber wall and are equipped with casings. 2. The test chamber according to claim 1, characterized in that the housings are removable. 3. The test chamber according to claim 1, characterized in that the casings are made transparent. 4. The test chamber according to claim 1, characterized in that the casings are made insulating.