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

Abstract

The utility model discloses a thermo-hygrostat for mould growth on the surface of building material, which relates to the technical field of material testing devices and comprises at least one maintenance component; 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, the camera is installed in the curing box to collect the mould growth condition on the surface of the test piece, and 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 test the relation between the mould growth and the hot and humid environment of the test piece.

Description

Building material surface mould growth thermo-hygroscopy testing device

Technical Field

The utility model relates to the technical field of material testing devices, in particular to a thermo-hygrostat testing device for mould growth on the surface of a building material.

Background

The problem of mold growth in buildings is ubiquitous, not only can building materials and structures corrode, but also can harm the health of indoor personnel. With the improvement of the requirements of people on the quality of living environment and the durability of buildings, the control issue of the growth of the building mold is increasingly emphasized. Wherein, the mildew-proof technology of the building material is the foundation.

Mold growth is affected by the substrate nutrients (water, sugars, inorganic salts) and pH, as well as ambient temperature, humidity and oxygen, and requires a certain spore germination and hyphal growth time. The prior coping idea mainly focuses on the matrix, namely, the material is treated by adopting a material anticorrosion method. However, for common building materials, the effects of conventional treatments such as soaking, cooking, high pressure injection, etc. often last only for a period of time, and cause additional environmental concerns and health risks. Even if the material substrate does not have mildew-proof conditions temporarily through mildew-proof treatment, dust pollution and human sweat volatilization can also cause the shallow area (0-3mm) of the material to have mildew growth conditions again in the long-term use process of a building.

With the development of building physical technology, people can judge the dynamic heat and humidity condition change of a building environment and even a building structure under a certain working condition more and more accurately by means of a computer tool. Based on the method, a method for controlling the environment hot and humid conditions and inhibiting the activity of mold so as to avoid the mildew of building materials gradually becomes a hot spot of a new technology. The quantitative relation for accurately describing the growth of the mold, the hot and humid environment and the time is a basic premise for applying the method, and the relation can be represented by the growth rate of the mold corresponding to a certain temperature and humidity.

The relationship between the growth rate of the mildew of the building material and the hot and humid environment is an indispensable basic parameter, but the development of the parameter test of the building material has difficulty at present. The existing test scheme has high device and labor cost and is difficult to popularize.

On the one hand, high humidity curing environments are difficult to build accurately. The mold growth test needs to be carried out under the condition of higher relative humidity, a common constant temperature and humidity box cannot provide accurate relative humidity in a high humidity area (> 85%), and a method adopting saturated salt solution can meet the control accuracy of the relative humidity, but requires a completely closed curing environment, which can cause the lack of oxygen supplement to interfere with the mold growth. For the construction of the temperature and humidity maintenance environment, equipment such as a constant temperature and humidity box is adopted, the temperature and the humidity are controlled simultaneously, and the technical cost is very high.

On the other hand, the existing testing scheme has high labor cost. For a material sample with low nutrient content or a working condition with low temperature and humidity, the growth of the mold is slow, and the test can be completed in months. In the process, the cost of the traditional manual recording method is high, and the maintenance environment is often opened for shooting and data recording, so that environmental disturbance is easily caused, and the precision and the stability of the test result are reduced.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. Therefore, the embodiment of the utility model provides a thermo-hygrostat for the growth of mould on the surface of a building material, which is used for carrying out the test of the relation between the mould growth and the thermo-hygrostat of a test piece.

The thermo-hygienics testing device for the mold growth on the surface of the building material comprises at least one maintenance assembly, wherein the maintenance assembly comprises a maintenance box used 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 the mould on the surface of the 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 acquire 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.

In an alternative or preferred embodiment, the maintenance assembly further comprises a box cover arranged on top of the maintenance box and at least one specimen holder located inside the maintenance box.

In an optional or preferred embodiment, the camera is fixed at the center of the inner side of the box cover, so that the shooting range covers the test piece in the curing box, and an included angle between a connecting line between the middle point of the lens of the camera and the outer edge of the test piece and a perpendicular line of the center of the lens of the camera is not more than 45 °.

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

In an optional or preferred embodiment, 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%.

In an optional or preferred embodiment, the box cover is hinged with the upper edge of the side wall of the curing box, and a plurality of sealing locks are arranged between the box cover and the curing box.

In an alternative or preferred embodiment, the thermostatic water bath box is provided with an air bottle placing cavity for placing a saturated air bottle.

In an alternative or preferred embodiment, the outlet duct is wrapped with a layer of insulation to insulate the air in the outlet duct.

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

In an alternative or preferred embodiment, one of said temperature assemblies is provided, and each of said maintenance assemblies is arranged in an incubator in said temperature assembly.

Based on the technical scheme, the embodiment of the utility model at least has the following beneficial effects: according to the technical scheme, the temperature of a test piece in the curing box is guaranteed by designing the thermostat, saturated air is obtained by introducing air into a saturated air bottle in the thermostatic water bath box and is output to the curing box, meanwhile, the saturated air temperature in the thermostatic water bath box and the air temperature in the thermostat are controlled by utilizing the basic principle that when the absolute humidity is constant, the relative humidity and the temperature have an inverse relation, and a specific temperature and humidity gradient is obtained in the curing box and is used for testing the relation between the growth of the mould of the test piece and a hot and humid environment; and adopt the camera to gather the mould growth condition on test piece surface, adopt the humiture probe to gather the inside humiture of curing box, finally by multichannel data collection station gathering to store and visual display through the computer. The device can effectively solve the problems that a high-humidity environment is difficult to accurately construct and the labor cost of data recording is high in the process of testing the growth property of the building material mould, has the characteristics of low cost, high precision, strong flexibility and high automation degree, can assemble and flexibly adjust all components of the device according to the requirements, and has a good application prospect in the increasingly important research and application of the growth of the building material mould.

Drawings

The utility model is further described below with reference to the accompanying drawings and examples;

FIG. 1 is a perspective view of an embodiment of the present invention;

FIG. 2 is a perspective view of another perspective of an embodiment of the present invention;

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

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

Reference numerals: the device comprises a maintenance component 10, a maintenance box 11, a box cover 12, a light-transmitting window 13, a sealing lock 14, a test piece support 15, a temperature component 20, a constant temperature box 21, a humidity component 30, a constant temperature water bath box 31, an air bottle placing cavity 32, a water temperature control plate 33, an air inlet pipe 34, an air inlet filter 35, an air flow meter 36, a saturated air bottle 37, an air outlet pipe 38, a heat preservation layer 39, a monitoring component 40, a computer 41, a multi-channel data collector 42, a data line 43, a camera 44, a temperature and humidity probe 45, a test piece 51, an exhaust pipe 61 and an exhaust filter 62.

Detailed Description

Reference will now be made in detail to the present embodiments of the present invention, preferred embodiments of which are illustrated in the accompanying drawings, wherein the drawings are provided for the purpose of visually supplementing the description in the specification and so forth, and which are not intended to limit the scope of the utility model.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present invention, unless otherwise specifically limited, terms such as set, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention by combining the specific contents of the technical solutions.

Example one

Referring to fig. 1 to 4, the thermo-hygro-testing device for mold growth on the surface of a building material comprises at least one maintenance component 10, at least one temperature component 20, at least one humidity component 30 and a monitoring component 40.

The maintenance assembly includes a maintenance box 11 for placing the test piece 51. The temperature assembly 20 comprises an oven 21, and a maintenance cabinet is located inside the oven 21 to obtain the temperature of the air inside the oven 21. The humidity component 30 comprises a constant temperature water bath 31 and a saturated air bottle 37 arranged in the constant temperature water bath 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 communicated with the outside, and the air outlet pipe 38 is communicated with the inside of the curing box 11 so as to adjust the air humidity in the curing box 11.

It will be understood that the temperature T of the air inside the curing box 11 is obtained by means of an oven 21 setting; 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 regulation range of the air temperature T and the relative humidity RH can cover the range of T being 10-40 ℃ and RH being 70-100%.

According to the technical scheme, the temperature of the test piece 51 in the curing box 11 is ensured by designing the thermostat 21, saturated air is obtained by introducing air into the saturated air bottle 37 in the thermostatic water bath box 31 and is output to the curing box 11, meanwhile, the saturated air temperature in the thermostatic water bath box 31 and the air temperature in the thermostat 21 are controlled by utilizing the basic principle that when the absolute humidity is fixed, the relative humidity and the temperature have an inverse relation, and a specific temperature and humidity gradient is obtained in the curing box 11 and is used for carrying out the relation test of the growth of the mould of the test piece and the hot and humid environment.

The monitoring assembly 40 comprises a camera 44, a temperature and humidity probe 45, a multi-channel data collector 42 and a computer 41, wherein the camera 44 is installed in the curing box 11 to collect the growth condition of mold on the surface of the test piece 51, the temperature and humidity probe 45 is installed in the curing box 11 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 with the multi-channel data collector 42 to obtain shooting data and temperature and humidity data, and the computer 41 is electrically connected with the multi-channel data collector 42 to represent the shooting data and the temperature and humidity data. According to the device, the camera 44 is adopted to collect the growth condition of the mould on the surface of the test piece 51, the temperature and humidity probe 45 is adopted to collect the temperature and humidity in the curing box 11, the temperature and humidity are finally collected by the multi-channel data collector 42, and the temperature and humidity are stored and visually displayed through the computer 41. Preferably, the monitoring time of the monitoring assembly 40 is in hours, and the data acquisition time step is preferably a multiple or a factor of 24, such as 48h/24h/12h/6h/3h/1 h.

As shown in fig. 3, specifically, the maintenance assembly 10 further includes a box cover 12 disposed on the top of the maintenance box 11 and at least one specimen support 15 located in the maintenance box 11, a plurality of specimens 51 can be placed on the specimen support 15, further, the box cover 12 is hinged to the upper edge of the side wall of the maintenance box 11, so as to open and close the box cover 12, and a plurality of sealing locks 14 are installed between the box cover 12 and the maintenance box 11. The cover 12 is provided with a light-transmitting window 13 to serve as a light-transmitting passage.

The temperature and humidity probe 45 is arranged on the test piece support 15, and particularly protrudes out of the upper surface of the central position of the test piece support 15, wherein the temperature and humidity probe 45 adopts a high-precision probe, the temperature detection precision of the temperature and humidity probe 45 is T +/-0.2 ℃, the relative humidity detection precision of the temperature and humidity probe 45 is RH +/-2.0%, so that the temperature and humidity inside the maintenance box 11 are collected and transmitted to the multi-channel data collector 42 through a data line 43.

The camera 44 is fixed at the center position of the inner side of the box cover 12, so that the shooting range covers the test piece 51 in the curing box, the light-transmitting window 13 is provided with a probe interface for mounting the camera 44, and the precision of the camera is not lower than HD 1080P. The connecting line between the middle point of the lens of the camera 44 and the outer edge of the test piece 51 and the perpendicular line of the center of the lens of the camera 44 form an included angle of not more than 45 degrees, and by the scheme, the shooting range of the camera 33 can be ensured to cover all the test pieces 51. The camera 44 and the temperature and humidity probe 45 have a dew condensation preventing function.

The interface of the multi-channel data acquisition unit 42 is 60 paths, the multi-channel data acquisition unit 43 is connected to the computer 41 through a data line 43, data acquisition time, step length and the like are controlled through computer instructions, and data are summarized, stored and visually displayed in the computer 41; the data collection time step was set to 12h and recorded 2 times per day for day and night.

Referring to fig. 4, the constant temperature water bath 31 has an air bottle insertion chamber 32 into which a saturated air bottle 37 is inserted. The outlet duct 38 is wrapped with a heat insulating layer 39 for insulating the air in the outlet duct 38, preferably 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, six curing assemblies 10 are provided, that is, six curing boxes 11, one temperature assembly is provided, that is, one incubator 21 is provided, and each curing assembly 10 is disposed in the incubator 21 of the temperature assembly 20. Six humidity modules 30 are provided, that is, six constant temperature water bath tanks 31 and six saturated air tanks 37. In this embodiment, the maintenance module 10, the temperature module 20, the humidity module 30 and the monitoring module 40 are arranged in a horizontal or box-type arrangement, as shown in fig. 1 and fig. 2, the present embodiment has a set of test gradients of air temperature T and six sets of test gradients of relative humidity RH.

The specific air intake sequence is as follows: an air inlet pipe 34, an air inlet filter 35, an air flow meter 36, a saturated air tank 37, an air outlet pipe 38, a curing box 11, a test piece 51, an exhaust filter 62 and an exhaust pipe 61.

In this embodiment, a set of air temperature T and six sets of relative humidity RH, which are combined temperature and humidity conditions of six sets of air temperature T and relative humidity RH, may be created simultaneously for maintaining the test piece. By using a self-assembled box-type curing box, the box cover 12 can be opened and closed, and a connector connected to the air outlet pipe 38 of the humidity module 30 and a connector connected to each component in the monitoring module 40 are reserved. The specific dimensions of the curing box 11 are: length × width × height is 600mm × 600mm × 400 mm; maintenance box 11 adopts stainless steel material enclosure, and the case lid 12 at top is provided with printing opacity window 13, and as the printing opacity passageway, the size of printing opacity window is: length × width 400mm × 400 mm; the bottom of the curing box 11 is provided with a test piece bracket 15 with the height of 5 cm.

The components of the testing device can be assembled and flexibly adjusted according to the needs, and the testing device has good application prospect in the research and application of the growth of the building material mould which is increasingly emphasized. The number of the saturated air bottles, the constant temperature water bath box and the curing box can be adjusted according to the gradient number of the air temperature T and the relative humidity RH which are simultaneously measured; the curing box can be other containers which can be sealed and opened, and the size can be adjusted according to the number of the test pieces to be measured. The camera and the temperature and humidity probe that monitoring subassembly 40 monitored, the probe can adopt the camera and the temperature and humidity probe of other models under the precision prerequisite of guaranteeing. The data collection end module can adopt tools of other models according to the data collection and processing requirements; the multichannel data acquisition unit can select proper interface capacity according to the requirement; the data collection time step may be chosen to be of other lengths, but is preferably based on 24h, a multiple or a factor thereof.

Example two

The difference between the present embodiment and the first embodiment is:

in this embodiment, the maintenance assembly 10 is provided with six maintenance boxes 11; the number of the temperature components is two, namely the number of the incubators 21 is two, the incubators are of a vertical multilayer structure, and every three maintenance boxes 11 are placed in one incubator 21. Six humidity modules 30 are provided, and a multi-level arrangement is also adopted to save floor space, and each saturated air bottle 37 is placed in the corresponding constant temperature water bath tank 31. In this embodiment, the maintenance module 10, the temperature module 20, the humidity module 30 and the monitoring module 40 are arranged in a vertical or cabinet type.

In this embodiment, two sets of air temperature T and three sets of relative humidity RH, six sets of combined temperature and humidity conditions of air temperature T and relative humidity RH, can be created simultaneously for the maintenance of the test piece. The adjusting range of the air temperature T and the relative humidity RH can cover the range of T10-40 ℃ and RH 70% -100%, the precision T plus or minus 0.2 ℃ and RH plus or minus 2.0%.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

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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