CN200986542Y - Surroundings baccy flue gas experiment cabin - Google Patents

Abstract

An experimental cabin for environmental tobacco smoke, which includes a main body of the experimental cabin, characterized in that: the main body of the experimental cabin includes a bulkhead base material layer (1) made of a thermal insulation material, attached to the bulkhead base material layer The stainless steel plate cladding layer (2) on the inner wall; a sampling window with a sealed door, a safety valve and a return air outlet (3) connected to the return air duct of the air handling unit are arranged on the bulkhead of the experimental cabin. The roof of the cabin is provided with an air inlet (4) for installing a plenum box (10) communicated with the air inlet pipe of the air handling unit and an exhaust outlet (5) equipped with an exhaust fan (6). The utility model has the beneficial effects of providing reliable research conditions for the research of environmental tobacco smoke, preventing the influence of external pollutants on the experimental results, and real-time regulation of the temperature, humidity and ventilation rate during the experimental process.

Description

Environmental Tobacco Smoke Experiment Chamber

technical field

The utility model relates to an environmental tobacco smoke experimental cabin for researching environmental tobacco smoke. The experimental cabin can eliminate the interference caused by external environmental pollutants on the measurement of environmental tobacco smoke, and can accurately control experimental parameters such as temperature, humidity and ventilation rate.

Background technique

The analysis of harmful components in the environmental tobacco smoke produced by cigarettes and the research on smoking and health, such as the impact of environmental tobacco smoke on the health of passive smokers, have been one of the topics that tobacco researchers have been paying attention to for many years. If the research on the above-mentioned subjects is carried out indoors under normal environmental conditions, the indoor ambient air is affected by building materials, furniture, and various vehicles and industrial emissions (such as benzo[a]pyrene, formaldehyde, toluene, etc.) The impact of pollutants, which poses a great obstacle to the study of environmental tobacco smoke pollution to the indoor environment. Therefore, in order to accurately study environmental tobacco smoke, it is necessary to exclude pollutants in the external environment as much as possible. Provide a relatively clean experimental space, and can not affect the smoke produced by cigarettes. Although the currently commonly used ultra-clean laboratories can meet the requirements of cleanliness, they will also destroy the smoke produced by cigarettes. In addition, the ultra-clean laboratory of the prior art cannot control important experimental parameters such as temperature, humidity and air exchange rate in the experiment due to limited conditions.

Contents of the invention

The purpose of this utility model is to provide a method that not only can effectively prevent the influence of external pollutants on the experimental results, but also can affect the temperature, humidity and ventilation rate in the experimental process. An environmental tobacco smoke experimental chamber that controls important experimental parameters such as

The purpose of this utility model can be achieved through the following technical measures:

The environmental tobacco smoke experimental cabin of the utility model includes the experimental cabin body, and the experimental cabin body includes a bulkhead base material layer made of heat-insulating and heat-preserving materials, and is coated with a stainless steel plate attached to the inner wall of the bulkhead base material layer. layer; on the bulkhead of the experimental cabin, a sampling window with a sealed door, a safety valve, and a return air outlet connected to the air return pipe of the air handling unit are arranged; The air inlet of the plenum box connected with the air duct and the exhaust outlet provided with the exhaust fan.

The utility model is provided with a return air outlet connected with the air return pipe of the air handling unit under the four walls of the experimental cabin, and the primary effect filter, louvers and electric return air valve are installed at the air return outlet; on the four walls of the experimental cabin Three sampling windows are respectively set on two adjacent bulkheads.

In the utility model, a 100-grade laminar flow cover is provided in the static pressure box, which can make the experimental cabin partly reach 100-grade cleanliness; the safety valve is a self-weight 100Pa safety valve, and the safety valve can be used when the pressure in the cabin is accidental. When the cause rises, it will automatically open to relieve the pressure in the cabin.

The air handling unit described in the utility model includes a new return air mixing section, an initial effect muffler section, a return fan section, an activated carbon filter section, an inspection section, a surface cooling section, a heating section, an inspection section, a humidification section, and a middle section arranged in sequence. Efficient filter section, inspection section, surface cooling section, frequency conversion speed regulation air supply section; two surface cooling sections are connected to the cold water system through connecting pipelines; frequency conversion speed regulation air supply section is set in the pipeline through the connection pipeline and The muffler, automatic air supply valve, and flow measuring instrument in the room are connected to the static pressure box set on the top of the experimental cabin; one air inlet of the new return air mixing section is connected to the atmosphere through a regulating valve and a fresh air particle filter, and the other inlet is connected to the atmosphere. The air outlet communicates with the return air outlet arranged on the bulkhead of the experimental cabin through a connecting pipeline.

Because the utility model adopts the bulkhead base material layer made of thermal insulation material, and attaches the stainless steel plate cladding layer on the inner wall of the bulkhead base material layer, this makes the utility model not only have the function of effectively preventing the external environment from affecting the cabin It can reduce the influence of internal temperature and reduce the adsorption of bulkheads to cigarette smoke. In addition, before the flue gas experiment, the experimental cabin of the utility model can purify the air in the experimental cabin and control the temperature and humidity through the action of the air handling unit to meet the requirements of the test conditions; In the process, the fresh air is purified and the temperature and humidity are adjusted in real time through the action of the air handling unit, and the temperature and humidity in the experimental cabin are controlled by the fresh air in real time and the return air is closed in time to prevent the filtration of the test smoke particles.

The utility model has the beneficial effects of providing reliable research conditions for the research of environmental tobacco smoke, preventing the influence of external pollutants on the experimental results, and real-time regulation of the temperature, humidity and ventilation rate during the experimental process.

Description of drawings

Accompanying drawing is the structural representation of the utility model.

Detailed ways

The utility model will be further described below in conjunction with embodiment (accompanying drawing):

As shown in the figure, the environmental tobacco smoke experimental cabin of the utility model includes the experimental cabin body, and the experimental cabin body includes a sandwich panel with heat insulation and heat preservation effect made of polyurethane foam material and color-plastic composite steel plate. The bulkhead base material layer 1, and the stainless steel plate cladding layer 2 attached to the inner wall of the bulkhead base material layer; a return air outlet 3 connected with the return air duct of the air handling unit is arranged under the four walls of the experimental cabin, so Shutters 7 and electric return air valves 8 are installed at the return air outlet; three sampling holes are respectively arranged on two adjacent bulkheads in the four walls of the experimental cabin; The air inlet 4 of the static plenum 10 connected by the unit air inlet pipe and the exhaust port 5 equipped with the exhaust fan 6 controlled by the automatic exhaust valve 9; the plenum 10 is provided with a hundred-level laminar flow cover, which Make the part of the experimental cabin reach 100 cleanliness; in addition, a safety valve is installed on the bulkhead of the experimental cabin, the safety valve is a self-weight 100Pa safety valve, and the safety valve can be automatically opened when the pressure in the cabin rises due to accidental reasons , so that the cabin pressure is relieved.

The air handling unit described in the utility model includes a new return air mixing section 20, an initial effect muffler section 21, a return fan section 22, an activated carbon filter section 23, an inspection section 24, a surface cooling section 25, a heating section 26, Inspection section 27, humidification section 28, medium-efficiency filter section 29, inspection section 30, surface cooling section 31, frequency conversion speed regulation air supply section 32; wherein surface cooling sections 25 and 31 are connected to the cold water system 17 through the connecting pipeline 16 Connection; the frequency conversion and speed regulation air supply section 32 is connected with the static pressure box 10 arranged on the top of the experimental cabin through the connecting pipeline and the muffler 13, the automatic air supply valve 12, and the flow measuring instrument 11 arranged in sequence between the pipelines; An air inlet of the wind mixing section 20 is communicated with the atmosphere through a regulating valve 18 and a fresh air particle filter 19, and the other air inlet is communicated with the return air outlet 3 arranged on the bulkhead of the experimental cabin through a connecting pipeline. An automatic air return valve 14 is arranged on the pipeline 15 connected with the air return pipe.

Claims (6)

1. An environmental tobacco smoke experimental cabin, which includes an experimental cabin body, characterized in that: the experimental cabin body includes a bulkhead base material layer (1) made of heat-insulating materials, attached to the bulkhead base The stainless steel plate cladding layer (2) on the inner wall of the material layer; a sampling window with a sealed door, a safety valve and a return air outlet (3) connected with the return air duct of the air handling unit are arranged on the bulkhead of the experimental cabin. The roof of the experimental cabin is provided with an air inlet (4) for installing a static pressure box (10) communicated with the air inlet pipe of the air handling unit and an exhaust outlet (5) equipped with an exhaust fan (6). 2. The environmental tobacco smoke experimental cabin according to claim 1, characterized in that: a return air outlet (3) connected to the air return duct of the air handling unit is arranged under the four walls of the experimental cabin, and the air return outlet Preliminary filter screen, louvers (7) and electric return air valve (8) are installed at the place. 3. The environmental tobacco smoke experimental chamber according to claim 1, characterized in that three sampling windows are respectively arranged on two adjacent bulkheads among the four walls of the experimental chamber. 4. The environmental tobacco smoke experimental chamber according to claim 1, characterized in that: a hundred-level laminar flow hood is arranged in the plenum (10). 5. The environmental tobacco smoke experimental chamber according to claim 1, characterized in that: the safety valve is a self-weight 100Pa safety valve. 6. The environmental tobacco smoke experimental cabin according to claim 1, characterized in that: the air handling unit includes a new return air mixing section (20), an initial effect muffler section (21), and a return fan section arranged in sequence. (22), activated carbon filter section (23), maintenance section (24), surface cooling section (25), heating section (26), maintenance section (27), humidification section (28), medium-efficiency filter section (29), The maintenance section (30), the surface cooling section (31), and the variable frequency speed regulation air supply section (32); wherein the surface cooling section (25) and (31) are connected to the cold water system (17) through the connecting pipeline (16) The air supply section (32) with variable frequency speed regulation is passed through the connecting pipeline and the muffler (13), the automatic air supply valve (12), the flow measuring instrument (11) and the static pressure that are arranged on the top of the experimental cabin are arranged successively between the pipelines. One air inlet of the new return air mixing section (20) communicates with the atmosphere through the regulating valve (18) and the fresh air particulate filter (19), and the other air inlet connects with the air inlet installed in the experiment through the connecting pipeline. The air return port (3) on the cabin bulkhead is connected.

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