CN216998432U - Building material surface mould growth thermo-hygroscopy testing device - Google Patents

Abstract

The utility model discloses a thermohygroscopic testing device for mold growth on the surface of building materials, which relates to the technical field of material testing devices. In order to obtain the air temperature in the constant temperature box; at least one humidity component, the humidity component includes a constant temperature water bath box and a saturated air bottle placed in the constant temperature water bath box, the saturated air bottle is connected with an air intake pipe and an air outlet pipe, the air intake pipe is connected to the outside, and the air outlet pipe Connected to the curing box to adjust the air humidity in the curing box; and a monitoring component, the monitoring component includes a camera, a temperature and humidity probe, a multi-channel data collector and a computer, and the camera is installed in the curing box to collect mold growth on the surface of the test piece In some cases, the temperature and humidity probe is installed in the curing box to collect the temperature and humidity inside the curing box. The utility model can carry out the test of the relationship between the mold growth of the test piece and the heat and humidity environment.

Description

A thermo-hygroscopic test device for mold growth on the surface of building materials

technical field

The utility model relates to the technical field of material testing devices, in particular to a thermohygroscopic testing device for mold growth on the surface of building materials.

Background technique

Mold growth in buildings is a widespread problem, not only causing corrosion of building materials and structures, but also endangering the health of indoor occupants. With the improvement of people's requirements for living environment quality and building durability, the issue of control of building mold growth has been paid more and more attention. Among them, the anti-mildew technology of building materials is the foundation.

Mold growth is affected by substrate nutrients (water, sugars, inorganic salts) and pH, as well as ambient temperature, humidity, and oxygen, and requires a certain time for spore germination and mycelial growth. The existing countermeasures mainly focus on the matrix, that is, using material anticorrosion methods for material treatment. However, for commonly used building materials, the effects of common treatment methods such as soaking, cooking, and high-pressure injection often only last for a period of time, and cause additional environmental concerns and health risks. Even if the material matrix is temporarily free from mildew conditions through anti-mildew treatment, during the long-term use of the building, dust pollution and human sweat volatilization will also cause the shallow area of the material (0-3mm) to have the conditions for mold growth again. .

With the development of building physics technology, people can use computer tools to more and more accurately judge the dynamic heat and humidity changes of the building environment and even the building structure under certain working conditions. Based on this, the method of controlling the environmental heat and humidity conditions, inhibiting the activity of mold, and thus avoiding the mold of building materials has gradually become a hot spot of emerging technologies. The accurate description of the quantitative relationship between mold growth, heat and humidity environment, and time is the basic premise of applying this method. This relationship can be characterized by the mold growth rate corresponding to a certain temperature and humidity.

The relationship between mold growth rate of building materials and heat and humidity environment is an indispensable basic parameter, but it is difficult to carry out the test of this material parameter at present. Existing test solutions, equipment and labor costs are high, and it is difficult to popularize.

On the one hand, it is difficult to create a high-humidity maintenance environment accurately. The mold growth test needs to be carried out under high relative humidity conditions. Ordinary constant temperature and humidity chambers cannot provide accurate relative humidity in high humidity areas (>85%). Although the method of using saturated salt solution can meet the relative humidity control accuracy, But requires a completely enclosed curing environment, which can lead to lack of oxygen supplementation and interfere with mold growth. For the creation of a temperature and humidity maintenance environment, equipment such as constant temperature and humidity boxes are used to control temperature and humidity at the same time, and the technical cost is very high.

On the other hand, the existing testing solutions have high labor costs. For material samples with low nutrient content, or in low temperature and humidity conditions, mold growth is slower and can take up to several months to complete the test. In this process, the cost of traditional manual recording methods is high, and the maintenance environment is often opened for shooting and data recording, which easily causes environmental disturbances and reduces the accuracy and stability of test results.

Utility model content

The present invention aims to solve one of the above-mentioned technical problems in the prior art at least to a certain extent. To this end, the embodiment of the present utility model provides a thermohygroscopic test device for mold growth on the surface of building materials, which is used to test the relationship between mold growth and heat and humidity environment of the test piece.

The thermo-hygroscopic test device for mold growth on the surface of building materials according to the embodiment of the present invention includes at least one curing component including a curing box for placing test pieces; at least one temperature component including an incubator , the curing box is located in the constant temperature box to obtain the air temperature in the constant temperature box; at least one humidity component, the humidity component includes a constant temperature water bath box and a saturated air bottle placed in the constant temperature water bath box , the saturated air bottle is connected with an air inlet pipe and an air outlet pipe, the air inlet pipe is connected to the outside, and the air outlet pipe is connected to the inside of the curing box to adjust the air humidity in the curing box; and a monitoring component, the monitoring The component includes a camera, a temperature and humidity probe, a multi-channel data collector and a computer. The camera is installed in the curing box to collect mold growth on the surface of the test piece, and the temperature and humidity probe is installed in the curing box. In order to collect the temperature and humidity inside the curing box, the camera and the temperature and humidity probe are respectively electrically connected to the multi-channel data collector to obtain shooting data and temperature and humidity data, and the computer is connected to the multi-channel data. The collector is electrically connected to characterize shooting data and temperature and humidity data.

In an optional or preferred embodiment, the curing assembly further includes a box cover disposed on the top of the curing box and at least one specimen holder located in the curing box.

In an optional or preferred embodiment, the camera is fixed at the inner center of the box cover, so that the shooting range covers the test piece in the curing box, and the center point of the lens of the camera and the outer edge of the test piece The angle between the connection line and the vertical line of the center of the lens of the camera does not exceed 45°.

In an optional or preferred embodiment, the box cover is provided with a light-transmitting window to serve as a light-transmitting channel, and the light-transmitting window is provided with a probe interface for installing the camera.

In an optional or preferred embodiment, the temperature and humidity probe is arranged on the specimen holder, the temperature detection accuracy of the temperature and humidity probe is T±0.2°C, and the relative humidity detection accuracy of the temperature and humidity probe is RH±2.0%.

In an optional or preferred embodiment, the box cover is hinged to the upper edge of the side wall of the curing box, and several sealing locks are installed between the box cover and the curing box.

In an optional or preferred embodiment, the constant temperature water bath has an air bottle insertion cavity for insertion of the saturated air bottle.

In an optional or preferred embodiment, the air outlet pipe is wrapped with a thermal insulation layer to keep the air in the air outlet pipe warm.

In an optional or preferred embodiment, the intake pipe is provided with an intake filter and an air flow meter, the curing box is connected with an exhaust pipe, and the exhaust pipe is provided with an exhaust filter.

In an optional or preferred embodiment, one temperature component is provided, and each of the curing components is arranged in a constant temperature box in the temperature component.

Based on the above-mentioned technical solutions, the embodiments of the present utility model have at least the following beneficial effects: the above-mentioned technical solutions ensure the temperature of the test piece in the curing box by designing a constant temperature box, and obtain saturated air by inhaling air into the saturated air bottle in the constant temperature water bath box. And output to the curing box, and at the same time use the basic principle that relative humidity and temperature have an inverse relationship when the absolute humidity is constant, control the saturated air temperature in the constant temperature water bath box and the air temperature in the constant temperature box, and obtain a specific temperature in the curing box. The humidity gradient is used to test the relationship between the mold growth of the test piece and the heat and humidity environment; the camera is used to collect the mold growth on the surface of the test piece, and the temperature and humidity probe is used to collect the temperature and humidity inside the curing box, and finally the multi-channel data collector Summarized, stored and visualized by computer. The utility model can effectively solve the problems of difficulty in accurately creating a high-humidity environment and high labor cost for data recording in the test of mold growth properties of building materials. The device has the characteristics of low cost, high precision, strong flexibility and high degree of automation. The constituent parts can be assembled and flexibly adjusted according to the needs, and it has a good application prospect in the research and application of mold growth in building materials, which is increasingly valued.

Description of drawings

Below in conjunction with accompanying drawing and embodiment, the utility model is further described;

1 is a perspective view of an embodiment of the present utility model;

Fig. 2 is the perspective view of another angle of view of the embodiment of the present utility model;

3 is an exploded view of the maintenance assembly in the embodiment of the present invention;

FIG. 4 is an exploded view of the humidity assembly in the embodiment of the present invention.

Reference numerals: curing component 10, curing box 11, box cover 12, light-transmitting window 13, sealing lock 14, specimen holder 15, temperature component 20, constant temperature box 21, humidity component 30, constant temperature water bath box 31, air bottle set Inlet cavity 32, water temperature control board 33, intake pipe 34, intake filter 35, air flow meter 36, saturated air bottle 37, air outlet pipe 38, insulation layer 39, monitoring component 40, computer 41, multi-channel data collector 42 , Data cable 43, camera 44, temperature and humidity probe 45, specimen 51, exhaust pipe 61, exhaust filter 62.

Detailed ways

This part will describe the specific embodiments of the present invention in detail, and the preferred embodiments of the present invention are shown in the accompanying drawings. Understand each technical feature and overall technical solution of the present invention, but it should not be construed as a limitation on the protection scope of the present invention.

In the description of the present utility model, it should be understood that the orientation descriptions related to orientations, such as up, down, front, rear, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings, only It is for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including this number, above, below, within, etc. are understood as including this number. If it is described that the first and the second are only for the purpose of distinguishing technical features, it cannot be understood as indicating or implying relative importance, or indicating the number of the indicated technical features or the order of the indicated technical features. relation.

In the description of the present invention, unless otherwise clearly defined, words such as setting, installation, connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution .

Example 1

1 to 4 , a thermo-hygroscopic test device for mold growth on the surface of building materials includes at least one maintenance component 10 , at least one temperature component 20 , at least one humidity component 30 and a monitoring component 40 .

The curing assembly includes a curing box 11 for placing the test piece 51 . The temperature assembly 20 includes an incubator 21 , and the curing box is located in the incubator 21 to obtain the air temperature in the incubator 21 . The humidity assembly 30 includes a constant temperature water bath box 31 and a saturated air bottle 37 placed in the constant temperature water bath box 31. The saturated air bottle 37 is connected with an air inlet pipe 34 and an air outlet pipe 38. The air inlet pipe 34 is connected to the outside, and the air outlet pipe 38 is connected to the inside of the curing box 11. , to adjust the air humidity in the curing box 11 .

It can be understood that the air temperature T in the curing box 11 is obtained by setting the constant temperature box 21; the relative humidity RH in the curing box 11 is obtained by adjusting both the saturated air temperature in the constant temperature water bath box 31 and the air temperature in the constant temperature box 21. The adjustment range of air temperature T and relative humidity RH should be able to cover the range of T=10-40℃, RH=70%-100%.

The above technical solution, by designing the constant temperature box 21 to ensure the temperature of the test piece 51 in the curing box 11, by entering the saturated air bottle 37 in the constant temperature water bath box 31, to obtain saturated air and output to the curing box 11, while using the current The basic principle of the inverse relationship between relative humidity and temperature when the absolute humidity is constant is to control the saturated air temperature in the constant temperature water bath box 31 and the air temperature in the constant temperature box 21, and obtain a specific temperature and humidity gradient in the curing box 11, which is used to carry out the test. Test of the relationship between mold growth and heat and humidity environment.

The monitoring component 40 includes a camera 44, a temperature and humidity probe 45, a multi-channel data collector 42 and a computer 41. The camera 44 is installed in the curing box 11 to collect the mold growth on the surface of the test piece 51, and the temperature and humidity probe 45 is installed in the curing box. 11, in order to collect the temperature and humidity inside the curing box 11, the camera 44 and the temperature and humidity probe 45 are respectively electrically connected to the multi-channel data collector 42 to obtain shooting data and temperature and humidity data, and the computer 41 is electrically connected to the multi-channel data collector 42. Connect to characterize shooting data and temperature and humidity data. The present invention uses the camera 44 to collect the mold growth on the surface of the test piece 51 , uses the temperature and humidity probe 45 to collect the temperature and humidity inside the curing box 11 , which is finally collected by the multi-channel data collector 42 , and stored and visualized by the computer 41 . It is shown that the utility model can effectively solve the problems of difficulty in accurately creating a high-humidity environment and high labor cost for data recording in the test of mold growth properties of building materials, and the device has the characteristics of low cost, high precision, strong flexibility and high degree of automation. Preferably, the monitoring time of the monitoring component 40 is in hours, and the data collection time step is preferably a multiple or factor of 24, such as 48h/24h/12h/6h/3h/1h.

As shown in FIG. 3 , specifically, the curing assembly 10 further includes a box cover 12 disposed on the top of the curing box 11 and at least one specimen support 15 located in the curing box 11 , and a plurality of specimens can be placed on the specimen support 15 51. Further, the box cover 12 is hinged with the upper edge of the side wall of the curing box 11 to facilitate opening and closing the box cover 12. A number of sealing locks 14 are installed between the box cover 12 and the curing box 11. The box cover 12 is provided with a light-transmitting window 13 to serve as a light-transmitting channel.

The temperature and humidity probe 45 is arranged on the test piece support 15, specifically, protruding from the upper surface of the center position of the test piece support 15, wherein the temperature and humidity probe 45 adopts a high-precision probe, and the temperature detection accuracy of the temperature and humidity probe 45 is T±0.2°C, and the temperature The relative humidity detection accuracy of the humidity probe 45 is RH±2.0%, so that the temperature and humidity inside the curing box 11 are collected and transmitted to the multi-channel data collector 42 through the data line 43 .

The camera 44 is fixed at the inner center position of the box cover 12 so that the shooting range covers the specimen 51 in the curing box. The light transmission window 13 is provided with a probe interface for the camera 44 to be installed, and the accuracy of the camera is not lower than HD1080P. The angle between the center point of the lens of the camera 44 and the outer edge of the specimen 51 and the vertical line of the center of the lens of the camera 44 should not exceed 45°. Through this solution, the shooting range of the camera 33 can be guaranteed to cover all Specimen 51. The camera 44 and the temperature and humidity probe 45 have anti-condensation functions.

The interface of the multi-channel data collector 42 is 60 channels, the multi-channel data collector 43 is connected to the computer 41 through the data line 43, the data acquisition time, step size, etc. are controlled by computer instructions, and the data is collected in the computer 41. Storage and visualization; data collection time step is set to 12h, recorded twice a day, corresponding to day and night.

As shown in FIG. 4 , the constant temperature water bath 31 has an air bottle insertion cavity 32 for insertion of the saturated air bottle 37 . The air outlet pipe 38 is wrapped with a thermal insulation layer 39 to keep the air in the air outlet pipe 38 warm, and the thermal insulation layer should be made of a flexible material.

Preferably, the intake pipe 34 is provided with an intake filter 35 and an air flow meter 36 , the curing box 11 is connected with an exhaust pipe 61 , and the exhaust pipe 61 is provided with an exhaust filter 62 .

In this embodiment, there are six curing components 10 , that is, six curing boxes 11 , one temperature component, that is, one constant temperature box 21 , and each curing component 10 is arranged in the constant temperature box 21 in the temperature component 20 . Six humidity components 30 are provided, that is, there are six constant temperature water bath boxes 31 and six saturated air bottles 37 . In this embodiment, the maintenance component 10 , the temperature component 20 , the humidity component 30 and the monitoring component 40 are arranged in a horizontal arrangement or a box arrangement. As shown in FIGS. 1 and 2 , this embodiment has a set of tests for the air temperature T. Gradients and six sets of relative humidity RH test gradients.

The specific air intake sequence is: intake pipe 34, intake filter 35, air flow meter 36, saturated air bottle 37, exhaust pipe 38, curing box 11, test piece 51, exhaust filter 62 and exhaust pipe 61 .

In this embodiment, one set of air temperature T and six sets of relative humidity RH can be created at the same time, and a total of six sets of combined temperature and humidity conditions of air temperature T & relative humidity RH can be created for specimen maintenance. A self-assembled box-type curing box is used, the box cover 12 can be opened and closed, and an interface connected to the outlet pipe 38 of the humidity assembly 30 and an interface connected to each component in the monitoring assembly 40 are reserved. The specific dimensions of the curing box 11 are: length×width×height=600mm×600mm×400mm; the curing box 11 is surrounded by stainless steel material, and the top cover 12 is provided with a light-transmitting window 13, which is used as a light-transmitting channel. The dimensions are: length×width=400mm×400mm; a specimen support 15 is placed at the bottom of the curing box 11 , and the height is 5cm.

The components of the testing device in the utility model can be assembled and flexibly adjusted as required, and have a good application prospect in the research and application of mold growth in building materials, which is increasingly valued. The number of saturated air bottles, constant temperature water bath box, and curing box can be adjusted according to the number of gradients of air temperature T & relative humidity RH measured at the same time; Quantity adjustment. The monitoring component 40 monitors the camera and the temperature and humidity probe. On the premise of ensuring the accuracy, the probe can use other types of cameras and temperature and humidity probes. The data collection end module can use other types of tools according to the needs of data collection and processing; the multi-channel data collector can choose the appropriate interface capacity according to the needs; the data collection time step can choose other lengths, but it should take 24h as the base and choose its multiples or factor.

Embodiment 2

The difference between this embodiment and the first embodiment is:

In this embodiment, a total of six curing components 10 are provided, that is, six curing boxes 11; two temperature components are provided, that is, two incubators 21 are provided. in an incubator 21 . There are six humidity components 30 , which are also arranged in multiple layers to save space, and each saturated air bottle 37 is placed in a corresponding constant temperature water bath 31 . In this embodiment, the maintenance component 10 , the temperature component 20 , the humidity component 30 and the monitoring component 40 are arranged in a vertical arrangement or a cabinet arrangement.

In this embodiment, two sets of air temperature T and three sets of relative humidity RH can be simultaneously created, a total of six sets of combined temperature and humidity conditions of air temperature T & relative humidity RH are used for specimen maintenance. The adjustment range of air temperature T and relative humidity RH can cover the range of T=10-40℃, RH=70%-100%, accuracy T±0.2℃, RH±2.0%.

The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings, but the present utility model is not limited to the above-mentioned embodiments, and within the knowledge scope possessed by those of ordinary skill in the technical field, the present utility model can also be used without departing from the purpose of the present utility model. make various changes.

Claims (10)

1. The utility model provides a building material surface mould growth heat and humidity test device which characterized in that: comprises that

The maintenance assembly comprises a maintenance box for placing a test piece;

the maintenance box body is positioned in the constant temperature box so as to obtain the air temperature in the constant temperature box;

the humidity component comprises a constant-temperature water bath box and a saturated air bottle arranged in the constant-temperature water bath box, the saturated air bottle is connected with an air inlet pipe and an air outlet pipe, the air inlet pipe is communicated with the outside, and the air outlet pipe is communicated with the inside of the curing box so as to adjust the air humidity in the curing box; and

the monitoring assembly comprises a camera, a temperature and humidity probe, a multi-channel data collector and a computer, wherein the camera is installed in the curing box to collect the growth condition of mold on the surface of a test piece, the temperature and humidity probe is installed in the curing box to collect the temperature and humidity inside the curing box, the camera and the temperature and humidity probe are respectively electrically connected with the multi-channel data collector to obtain shooting data and temperature and humidity data, and the computer is electrically connected with the multi-channel data collector to represent the shooting data and the temperature and humidity data.

2. The thermo-wet test device for mold growth on the surface of building material according to claim 1, wherein: the maintenance assembly further comprises a box cover arranged at the top of the maintenance box and at least one test piece support positioned in the maintenance box.

3. The thermo-wet test device for mold growth on the surface of building material according to claim 2, wherein: the camera is fixed the inboard central point of case lid puts to make the shooting scope cover the test piece in the curing box, the line of camera lens mid point and test piece outside edge, with the contained angle between the camera lens center perpendicular line of camera and the two is no longer than 45.

4. The thermo-hygrometric testing device for the growth of mold on the surface of building materials as in claim 3, wherein: the case lid is provided with the printing opacity window to as the printing opacity passageway, the printing opacity window is provided with the confession the probe interface of camera installation.

5. The thermo-wet test device for mold growth on the surface of building material according to claim 2, wherein: the temperature and humidity probe is arranged on the test piece support, the temperature detection precision of the temperature and humidity probe is T +/-0.2 ℃, and the relative humidity detection precision of the temperature and humidity probe is RH +/-2.0%.

6. The thermo-wet test device for mold growth on the surface of building material according to claim 2, wherein: the case lid with maintenance case lateral wall is gone up along articulated, the case lid with install a plurality of sealed lock between the maintenance case.

7. The thermo-hygrometric test device for the growth of mold on the surface of building materials as in any one of claims 1 to 6, characterized in that: the constant temperature water bath box is provided with an air bottle placing cavity for placing a saturated air bottle.

8. The thermo-hygrometric testing device for the growth of mold on the surface of building materials as in claim 7, wherein: the air outlet pipe is wrapped with a heat preservation layer so as to preserve heat of air of the air outlet pipe.

9. The thermo-wet test device for mold growth on the surface of building material according to claim 7, wherein: the intake pipe is provided with air intake filter and air flow meter, the curing box is connected with the blast pipe, the blast pipe is provided with exhaust filter.

10. The thermo-wet test device for mold growth on the surface of building materials according to any one of claims 1 to 6, wherein: the temperature assembly is arranged one, and all the maintenance assemblies are arranged in a constant temperature box in the temperature assembly.

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