CN211013951U - Formaldehyde climate box - Google Patents
Formaldehyde climate box Download PDFInfo
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- CN211013951U CN211013951U CN201921251364.1U CN201921251364U CN211013951U CN 211013951 U CN211013951 U CN 211013951U CN 201921251364 U CN201921251364 U CN 201921251364U CN 211013951 U CN211013951 U CN 211013951U
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Abstract
The application provides a formaldehyde weather case, the utility model discloses can provide standard test environment to the pollutant release rate and the release characteristic of various indoor materials of test and product, and then can: determining the effect of environmental variables on material and product release rate and release characteristics; grading the material and the product according to the release characteristics; developing and verifying a model for predicting indoor air pollution; according to indoor pollutant data or prediction model to indoor air quality evaluation etc. improve the accuracy to formaldehyde gas detection data, the utility model discloses environmental conditions such as temperature, relative humidity and air replacement rate in the case can be adjusted as required; sampling at an air outlet or inside the environment box; analyzing the gas sample by a proper method to identify the main pollutants and the change of the concentration thereof along with the time; the release rate and release characteristics of the material and product are then determined from the measured concentrations.
Description
Technical Field
The utility model relates to a weather case field indicates a formaldehyde weather case especially.
Background
The furniture, the plate and other products contacted with the human body can volatilize substances such as formaldehyde and the like harmful to the human body, and particularly, the accumulated concentration is higher in rooms and vehicles with dense product placement and closed spaces, so that the harm to the health of the human body is larger. The formaldehyde emission test box is used for testing and evaluating the emission of harmful substances in products such as furniture, building materials and the like.
The main sources of formaldehyde are from fuel combustion and transportation outdoors, and from combustion products of coal and natural gas, smoke of smoking, heating and cooking, etc., adhesives, coatings, paints, plates, wallpaper, etc., in building and decorative materials, furniture, household appliances, furniture, detergents, and the emission of human body, etc., indoors. There are nearly thousands of types. In the indoor decoration process, formaldehyde mainly comes from paint, coating and adhesive, and formaldehyde can cause the maladjustment of organism immune level, influence central nervous system function, the subjective symptoms such as dizziness, headache, somnolence, weakness, chest distress appear, can also influence the digestive system, the anorexia, nausea appear, can damage liver and hemopoiesis system when serious, the emergence allergy etc. consequently the detection to formaldehyde gas content is especially important, and the current detection to formaldehyde gas is mostly unable to simulate the climatic environment that is detected the gas and is located, thereby influence the accuracy to formaldehyde gas detection data.
Disclosure of Invention
In order to solve the above problems, the present invention provides a formaldehyde climate box, which provides a standard test environment such as a designated temperature, a relative humidity, an air replacement rate and an air flow velocity or simulates a real indoor environment, and tests a pollutant release rate and a release characteristic of various indoor materials and products.
In order to achieve the above object, the utility model adopts the following technical scheme: a formaldehyde climatic chamber comprises a test chamber body, wherein the test chamber body comprises a control chamber and a test chamber provided with an air inlet and an air outlet, a temperature sensor, a humidity sensor and a heating unit are arranged in the test chamber, a refrigerating unit, a humidifying unit and a control unit are arranged in the control chamber, and the refrigerating unit and the humidifying unit are communicated with the test chamber through the air inlet; the refrigeration unit comprises a first compressor, a condenser, an evaporator, a flow guide fan and a capillary tube, wherein an output port of the first compressor is communicated with an input port of the condenser, an output port of the condenser is communicated with an input port of the evaporator, an output port of the evaporator is communicated with an input port of the first compressor through the capillary tube, and the flow guide fan is tightly attached to the evaporator and is communicated with an air inlet of the test chamber; the temperature sensor, the humidity sensor, the heating unit, the first compressor, the evaporator and the flow guide fan are all electrically connected with the control unit.
Further, the humidification unit includes air compressor, filter equipment, humidifier, connecting tube, electronic flow valve, wherein air compressor's delivery outlet and filter equipment's input port are connected, filter equipment's delivery outlet and the input port of humidifier are connected, the delivery outlet of humidifier and connecting tube's one end intercommunication, connecting tube's the other end passes through the air intake intercommunication of electronic flow valve with the test room, just air compressor, filter equipment, humidifier, electronic flow valve all with the control unit electric connection.
Furthermore, activated carbon impregnated with potassium permanganate and activated aluminum is filled in the filtering device.
Further, still be provided with the differential pressure gauge in the test chamber the air outlet of test chamber is furnished with and is equipped with the pressure discharge flow valve, wherein differential pressure gauge, pressure discharge flow valve all with the control unit electric connection.
Further, the surface of the test box body is provided with a control panel, the control panel comprises a control screen and control keys, and the control screen and the control keys are electrically connected with the control unit.
Further, the test chamber is made of stainless steel.
Furthermore, the air outlet of the test chamber is positioned above the air inlet, the air outlet and the air inlet are arranged on different inner walls of the test chamber, and the air outlet faces the length direction of the test chamber.
The beneficial effects of the utility model reside in that: the utility model discloses can provide standard test environment (like appointed temperature, relative humidity, air replacement rate and air flow velocity) or simulate real indoor environment to the pollutant release rate and the release characteristic of various indoor materials of test and product, and then can: determining the effect of environmental variables on material and product release rate and release characteristics; grading the material and the product according to the release characteristics; developing and verifying a model for predicting indoor air pollution; according to indoor pollutant data or prediction model to Indoor Air Quality (IAQ) appraise etc. improve the accuracy to formaldehyde gas detection data, the utility model discloses environmental conditions such as temperature, relative humidity and air replacement rate in the case can be adjusted as required; sampling at an air outlet or inside the environment box; analyzing the gas sample by a proper method to identify the main pollutants and the change of the concentration thereof along with the time; the release rate and release characteristics of the material and product are then determined from the measured concentrations.
Drawings
Figure 1 is the three-dimensional structure sketch map of the formaldehyde climate box of the utility model.
Figure 2 is the inside structure view of the formaldehyde climate box of the utility model.
Fig. 3 is a logic block diagram of an electrical connection structure of the formaldehyde climate box of the present invention.
The reference numbers illustrate: 1. a test box body; 11. a control room; 110. a control unit; 111. a condenser; 112. a first compressor; 113. an air compressor; 114. a filtration device; 115. a humidifier; 116. an evaporator; 117. a flow guiding fan; 118. an electronic flow valve; 12. a test chamber; 121. a temperature sensor; 122. a humidity sensor; 123. a heating unit; 124. a differential pressure gauge; 125. a pressure discharge flow valve; 13. a control screen; 14. and controlling the keys.
Detailed Description
Referring to fig. 1-3, the present invention relates to a formaldehyde climate box, including a testing box body 1, wherein the testing box body 1 includes a control chamber 11, a testing chamber 12 provided with an air inlet and an air outlet, wherein a temperature sensor 121, a humidity sensor 122, and a heating unit 123 are disposed in the testing chamber 12, wherein a refrigerating unit, a humidifying unit, and a control unit 110 are disposed in the control chamber 11, wherein the refrigerating unit and the humidifying unit are all communicated with the testing chamber 12 through the air inlet, and the temperature sensor 121, the humidity sensor 122, the heating unit 123, the refrigerating unit, and the humidifying unit are all electrically connected with the control unit 110; the refrigeration unit comprises a first compressor 112, a condenser 111, an evaporator 116, a diversion fan 117 and a capillary tube, wherein an output port of the first compressor 112 is communicated with an input port of the condenser 111, an output port of the condenser 111 is communicated with an input port of the evaporator 116, an output port of the evaporator 116 is communicated with the input port of the first compressor 112 through the capillary tube, the diversion fan 117 is attached to the evaporator 116, and an exhaust port of the diversion fan 117 is communicated with an air inlet of the test chamber 12; the temperature sensor 121, the humidity sensor 122, the heating unit 123, the first compressor 112, the evaporator 116, and the guiding fan 117 are electrically connected to the control unit 110.
Referring to fig. 1-3, the present invention can provide a standard test environment (such as a designated temperature, relative humidity, air displacement rate and airflow velocity) or simulate a real indoor environment, and test the pollutant release rate and release characteristics of various indoor materials and products, and further can: determining the effect of environmental variables on material and product release rate and release characteristics; grading the material and the product according to the release characteristics; developing and verifying a model for predicting indoor air pollution; according to indoor pollutant data or prediction model to Indoor Air Quality (IAQ) appraise etc. improve the accuracy to formaldehyde gas detection data, the utility model discloses environmental conditions such as temperature, relative humidity and air replacement rate in the case can be adjusted as required; sampling at an air outlet or inside the environment box; analyzing the gas sample by a proper method to identify the main pollutants and the change of the concentration thereof along with the time; the release rate and release characteristics of the material and product are then determined from the measured concentrations.
In order to guarantee the requirement of test box cooling rate and minimum temperature, this test box adopts one set of air-cooled refrigerating system, in this embodiment, the air condition mode: forced air internal Balance Temperature Control (BTC). The method is that under the condition that the refrigerating system continuously works, the control system controls the output quantity of the heating unit 123 according to the result of PID automatic operation output of the set temperature point, and finally a dynamic balance is achieved. The temperature is changed by effective exchange with the guiding fan 117. By improving the air flow of the air, the air flow and the heat exchange capacity with the heating unit 123 and the cooling unit are improved, so that the temperature uniformity of the test chamber is greatly improved.
Referring to fig. 1-3, further, the humidification unit includes an air compressor 113, a filtering device 114, a humidifier 115, a connecting pipeline, and an electronic flow valve 118, wherein an output port of the air compressor 113 is connected to an input port of the filtering device 114, an output port of the filtering device 114 is connected to an input port of the humidifier 115, an output port of the humidifier 115 is communicated with one end of the connecting pipeline, another end of the connecting pipeline is communicated with an air inlet of the test chamber 12 through the electronic flow valve 118, and the air compressor 113, the filtering device 114, the humidifier 115, and the electronic flow valve 118 are all electrically connected to the control unit 110.
Referring to fig. 1-3, in the present embodiment, an air compressor 113, a filtering device 114, a humidifier 115, a connecting pipe, and an electronic flow valve 118 are provided to cooperate to control the humidity in the testing chamber 12, and the input compressed air is filtered, and the filtering device 114 is filled with activated aluminum and activated carbon impregnated with potassium permanganate, so as to ensure that the influence of the external air on the test is reduced; also, through cooperation of the humidity sensor 122, the control unit 110 can control the humidity range within the test chamber 12: 30% -70%, accuracy: 3 percent.
Referring to fig. 1-3, a pressure difference meter 124 is further disposed in the testing chamber 12, and a pressure discharge flow valve 125 is disposed at an air outlet of the testing chamber 12, wherein the pressure difference meter 124 and the pressure discharge flow valve 125 are electrically connected to the control unit 110. And the interior of the test chamber 12 is maintained at a positive pressure of at least 1Pa and can be monitored over time by the differential pressure gauge 124. if the pressure in the test chamber 12 is too low, the control unit 110 controls the flow rate of the discharge flow valve 125 to maintain the pressure in the chamber within a set range.
Further, the surface of the test box 1 is provided with a control panel, the control panel comprises a control screen 13 and control keys 14, and the control screen 13 and the control keys 14 are both electrically connected with the control unit 110. Meanwhile, a user can change corresponding working parameters through the control panel according to actual requirements, for example, the air replacement rate can be adjusted through the control key 14 and displayed on the control screen 13, and the precision is +/-0.05 AC/h;
further, the test chamber 12 is made of stainless steel.
Furthermore, the air outlet of the test chamber 12 is positioned above the air inlet, and the air outlet and the air inlet are arranged on different wall surfaces and at different heights; the internal air flow circulates over the sample being placed, simulating a real room environment, to flow horizontally along the length of the test chamber 12. The normal air flow can be ensured
When the device works, various parameters are as follows: humidity range in the tank: 30% -70%, accuracy: plus or minus 3 percent; air exchange rate: (1 +/-0.05/h); air flow rate (m/s): 0.1 to 0.3; formaldehyde background value: <0.006mg/m 3.
The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.
Claims (6)
1. A formaldehyde climate box is characterized in that: the test box comprises a control chamber and a test chamber provided with an air inlet and an air outlet, wherein a temperature sensor, a humidity sensor and a heating unit are arranged in the test chamber, a refrigerating unit, a humidifying unit and a control unit are arranged in the control chamber, and the refrigerating unit and the humidifying unit are communicated with the test chamber through the air inlet; the refrigeration unit comprises a first compressor, a condenser, an evaporator, a flow guide fan and a capillary tube, wherein an output port of the first compressor is communicated with an input port of the condenser, an output port of the condenser is communicated with an input port of the evaporator, an output port of the evaporator is communicated with an input port of the first compressor through the capillary tube, and the flow guide fan is tightly attached to the evaporator and is communicated with an air inlet of the test chamber; the temperature sensor, the humidity sensor, the heating unit, the first compressor, the evaporator and the flow guide fan are all electrically connected with the control unit.
2. A formaldehyde climate box according to claim 1, characterized in that: the humidifying unit comprises an air compressor, a filtering device, a humidifier, a connecting pipeline and an electronic flow valve, wherein an output port of the air compressor is connected with an input port of the filtering device, an output port of the filtering device is connected with an input port of the humidifier, an output port of the humidifier is communicated with one end of the connecting pipeline, the other end of the connecting pipeline is communicated with an air inlet of the test chamber through an electronic flow valve, and the air compressor, the filtering device, the humidifier and the electronic flow valve are all electrically connected with the control unit.
3. A formaldehyde climate box according to claim 1, characterized in that: the testing chamber is also internally provided with a differential pressure gauge, and the air outlet of the testing chamber is provided with a pressure discharge flow valve, wherein the differential pressure gauge and the pressure discharge flow valve are electrically connected with the control unit.
4. A formaldehyde climate box according to claim 1, characterized in that: the surface of the test box body is provided with a control panel, the control panel comprises a control screen and control keys, and the control screen and the control keys are electrically connected with the control unit.
5. A formaldehyde climate box according to claim 1, characterized in that: the test chamber is made of stainless steel.
6. A formaldehyde climate box according to claim 1, characterized in that: and the air outlet of the test chamber is positioned above the air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921251364.1U CN211013951U (en) | 2019-08-01 | 2019-08-01 | Formaldehyde climate box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921251364.1U CN211013951U (en) | 2019-08-01 | 2019-08-01 | Formaldehyde climate box |
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| Publication Number | Publication Date |
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| CN211013951U true CN211013951U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921251364.1U Active CN211013951U (en) | 2019-08-01 | 2019-08-01 | Formaldehyde climate box |
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| CN (1) | CN211013951U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113253780A (en) * | 2021-04-29 | 2021-08-13 | 上海交通大学 | Controllable humiture environment case and control circuit |
| EP3992534A1 (en) * | 2020-10-30 | 2022-05-04 | Trane International Inc. | Systems and methods for correlating indoor air quality data and trends to pathogen remediation |
-
2019
- 2019-08-01 CN CN201921251364.1U patent/CN211013951U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3992534A1 (en) * | 2020-10-30 | 2022-05-04 | Trane International Inc. | Systems and methods for correlating indoor air quality data and trends to pathogen remediation |
| US12050023B2 (en) | 2020-10-30 | 2024-07-30 | Trane International Inc. | Systems and methods for correlating indoor air quality data and trends to pathogen remediation |
| CN113253780A (en) * | 2021-04-29 | 2021-08-13 | 上海交通大学 | Controllable humiture environment case and control circuit |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220216 Address after: 413000 No. 02, Lida Road, Changchun Economic Development Zone, Ziyang District, Yiyang City, Hunan Province Patentee after: Hunan haiyouda Intelligent Technology Co.,Ltd. Address before: 523000 Caibai first industrial zone, Daojiao, Dongguan, Guangdong Patentee before: HAIDA EQUIPMENT Co.,Ltd. |
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| TR01 | Transfer of patent right |