A constant temperature and humidity test box for testing building materials and its working method

Abstract

This invention discloses a constant temperature and humidity test chamber for testing building materials and its working method. The chamber includes a housing with a material placement cavity at its upper end. A humidity sensor and a temperature sensor are respectively installed at the upper end of the material placement cavity. A partition for placing building materials is installed in the middle of the material placement cavity. The chamber also includes a temperature and humidity regulating cavity, with a first fan arranged in a rectangular pattern above it. A fixing plate is located in the middle of the temperature and humidity regulating cavity, and a temperature regulating device arranged in a rectangular pattern inside the fixing plate. A transmission cavity is located at the lower end of one side of the housing. A servo motor is fixedly installed inside the transmission cavity, which can flexibly adjust the direction of the semiconductor electronic cooling chip according to the internal temperature of the test chamber, thereby quickly achieving cooling or heating. Simultaneously, the water tank and the semiconductor electronic cooling chip work together to achieve heat recovery and auxiliary humidification.

Description

Technical Field

[0001] The invention relates to the technical field of building material testing equipment, in particular to a constant temperature and humidity test box for building material testing and a working method thereof. Background Art

[0002] Building materials are various materials used in construction projects, including organic materials, inorganic materials and composite materials. As the requirements for building materials continue to increase, the building materials after production need to undergo various measurements to fully understand the possible situations that may arise during future use, so as to make accurate assessments. Based on this, a constant temperature and humidity test chamber is needed. After placing the building materials inside, the temperature and humidity can be adjusted to simulate the actual use of the building materials.

[0003] For example, in the Chinese authorized patent "Constant Temperature and Humidity Test Chamber" with announcement number CN214210557U, a partition is provided between the test chamber and the evaporation chamber, the humidification chamber is equipped with a humidification device and a backup water tank, the circulation port on the jet pipe is connected to the backup water tank 22, the clamping plate 15 on the clamping handle device is provided with fixed concave teeth, the bottom of the clamping column plate is provided with fixed convex teeth, and the clamping column plate is installed on the clamping plate 15. In view of the problems existing in the background technology, a constant temperature and humidity test chamber is provided that can automatically replenish water to the water tank in the humidification device in time to ensure that its automatic humidification function can operate for a long time.

[0004] Although the above-mentioned existing technology can realize humidification inside the test chamber, its functional scope is still small. Since the environments that need to be simulated by building materials are different, it is necessary to change from high humidity to low humidity in a short period of time, and at the same time, it needs to coordinate with the temperature change. It cannot meet the situation that the test chamber can flexibly adjust the internal temperature and humidity. Therefore, it does not meet the existing needs. In this regard, we propose a constant temperature and humidity test chamber for building material testing and a working method thereof. Summary of the invention

[0005] The object of the present invention is to provide a constant temperature and humidity test chamber for testing building materials and a working method thereof, so as to solve the problem that the test chamber proposed in the above background technology cannot flexibly adjust the internal temperature and humidity.

[0006] To achieve the above object, the present invention provides the following technical solutions: a constant temperature and humidity test box for building material testing and a working method thereof, comprising a box body, a material placement cavity is arranged at the upper end of the inner part of the box body, a humidity sensor and a temperature sensor are respectively installed at the upper end of the material placement cavity, and a partition for placing building materials is installed at the middle position of the material placement cavity;

[0007] It also includes a temperature and humidity regulating chamber, which is arranged below the material placement chamber, a first fan distributed in a rectangular shape is arranged above the temperature and humidity regulating chamber, a fixing plate is arranged at the middle position of the temperature and humidity regulating chamber, and the fixing plate is fixedly connected to the box body, and a temperature regulating device distributed in a rectangular shape is arranged inside the fixing plate, the temperature regulating devices adjacent to each other on both sides are fixed by a connecting shaft, and the connecting shaft is rotatably connected to the fixing plate, the outer side of the temperature regulating device on one side is connected to the fixing plate by a rotating shaft, and the outer side of the temperature regulating device on the other side is provided with a connecting shaft;

[0008] The transmission cavity is arranged at the lower end of one side of the box body, and the connecting shaft extends into the interior of the transmission cavity. A servo motor is fixedly installed inside the transmission cavity, and the output shaft of the servo motor is transmission-connected to one end of the connecting shaft.

[0009] Preferably, the temperature regulating device is composed of a semiconductor electronic refrigeration sheet, a first heat conducting plate and a second heat conducting plate, wherein the first heat conducting plate is fixedly arranged at the cold end of the semiconductor electronic refrigeration sheet, and the second heat conducting plate is fixedly arranged at the hot end of the semiconductor electronic refrigeration sheet.

[0010] Preferably, a water tank is provided at the bottom of the temperature and humidity regulating chamber, and there are two water tanks, and sliding blocks are fixedly provided at the front and rear ends of the water tank, and threaded rods are rotatably installed at the front and rear of the bottom of the temperature and humidity regulating chamber, and the threaded rods are threadedly matched with the sliding blocks, one end of the threaded rods extends to the interior of the transmission chamber, and the ends of the threaded rods are driven by a chain belt, and a driven gear is fixedly provided at one end of one of the threaded rods located inside the transmission chamber, and a driving gear is installed at the middle position of the output shaft of the servo motor, and a transmission gear is meshedly connected below the driving gear, and the transmission gear is meshedly connected to the driven gear.

[0011] Preferably, a water distribution pipe is provided on the rear side of the first fan, four nozzles are provided at the upper end of the water distribution pipe, and the nozzles are inclined toward the first fan, a piezoelectric ceramic microporous atomizing sheet is provided inside the nozzle, a driver is provided on one side of the nozzle, and the driver is meshingly connected to the nozzle, a water supply pipe is provided at one end of the water distribution pipe, and the water supply pipe extends to the interior of the temperature and humidity regulating chamber, and a water pump is installed at the middle position of the water supply pipe.

[0012] Preferably, the interior of the water tank is divided into a hot water chamber and a cold water chamber, a second fan is provided above the hot water chamber and the cold water chamber, and the second fan is located directly below the temperature regulating device, a hot water pipe is provided at the upper end of the hot water chamber, and one end of the hot water pipe is connected to the water supply pipe, a cold water pipe is provided at the upper end of the cold water chamber, and one end of the cold water pipe is connected to the water supply pipe, and solenoid valves are installed on the outside of the cold water pipe and the hot water pipe.

[0013] Preferably, water guide plates are provided below both sides of the temperature regulating device, the water guide plates are inclined toward the temperature regulating device, and the water guide plates are plugged and fixed to the fixing plates, and the water guide plates guide the condensed water on the surface of the first heat conducting plate into the water tank.

[0014] Preferably, an air duct is provided at the rear end of the box body, an air inlet is provided at one end of the air duct, a dustproof net is provided inside the air inlet, an air outlet is provided at the other end of the air duct, and a fiber cotton filter layer is provided inside the air outlet.

[0015] Preferably, the air duct is in an S-shaped structure, and a plurality of staggered partitions are arranged inside the air duct, and the partitions are in an inclined structure.

[0016] Preferably, two doors are installed at the front end of the box body, and the doors are connected to the box body through hinges, and observation windows are arranged inside the doors.

[0017] The working method of the constant temperature and humidity test chamber for building material testing includes the following steps:

[0018] Step 1: The temperature sensor can monitor the internal temperature of the material placement chamber. When the internal temperature is lower than the set value, the servo motor is turned on, and its output shaft drives the connecting shaft to rotate, so that the second heat conducting plate faces upward, and the power of the semiconductor electronic refrigeration plate is turned on. At this time, the surface that touches the second heat conducting plate is the hot end. As the second heat conducting plate continues to heat the surrounding air, the first fan is used to transport the air containing heat to the temperature and humidity adjustment chamber to heat the interior. When the internal temperature is higher than the set value, the servo motor rotates in the opposite direction, causing the semiconductor electronic refrigeration plate to rotate 180 degrees, so that its cold end faces upward. Similarly, under the action of the first fan, cold air is blown to the temperature and humidity adjustment chamber to heat the interior. The refrigeration is realized by the part. During the adjustment of the semiconductor electronic refrigeration sheet, the driving gear on the output shaft of the servo motor drives the driven gear to rotate through the transmission gear, and then the two threaded rods can rotate synchronously under the action of the chain belt. The sliding block and the threaded rod can drive the water tank to move under the threaded cooperation. The interior of the water tank is divided into a hot water chamber and a cold water chamber. When the first heat conducting plate faces upward, the hot water chamber is located at the lower end of the second heat conducting plate. Turning on the second fan above can conduct heat to the inside of the hot water chamber, thereby heating the internal water body. If the second heat conducting plate faces upward, the cold water chamber is located at the lower end of the first heat conducting plate, and the second fan can be used to cool the internal water.

[0019] Step 2: The humidity sensor can monitor the humidity in real time and improve the internal temperature while adjusting the humidity. If the humidity is lower than the set value, the water pump outside the water supply pipe is turned on to pump out the water inside the water tank and transport it to the water distribution pipe. The water is broken into water mist under the action of the driver and quickly transported to the material placement chamber with the first fan to increase the humidity. When the humidity is higher than the set value, the first heat conduction plate is adjusted upward under the adjustment of the servo motor. At this time, the first fan is turned off, the efficiency of thermal superconductivity is reduced, and it will not affect the inside of the material placement chamber. Since the temperature of the first heat conduction plate is quickly reduced, the temperature of the first heat conduction plate is increased. The humidity in the air decreases rapidly and condenses with the surrounding air, thereby quickly reducing the humidity in the air. The first heat conduction plate is arranged at an angle, and the condensed water droplets move downward rapidly under the action of gravity. Under the blockage of the water conduction plate, they can move to the water tank. At the same time, when the humidity of the material placement chamber is adjusted, the internal temperature can be appropriately improved. When the temperature needs to be increased during the humidification process, the solenoid valve of the cold water pipe is closed, and the solenoid valve of the hot water pipe is opened. Then, the water inside the hot water chamber is used to assist in heating and humidification. Conversely, the solenoid valve of the cold water pipe is opened, and the solenoid valve of the hot water pipe is closed, and the water inside the cold water chamber is used to assist in cooling and humidification.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention adjusts the temperature of the material placement chamber based on a semiconductor electronic refrigeration sheet. The building materials are placed on the internal partition. The temperature sensor can monitor the internal temperature of the material placement chamber. When the internal temperature is lower than the set value, the servo motor is turned on, and its output shaft drives the connecting shaft to rotate, so that the second heat conduction plate faces upward, and the power supply of the semiconductor electronic refrigeration sheet is turned on. When direct current passes through the thermocouple formed by two different types of semiconductor materials in series, heat is dissipated and absorbed at both ends of the thermocouple respectively. At this time, the surface that contacts the second heat conduction plate is the hot end. As the second heat conduction plate continuously heats the surrounding air, the first fan is used to transport the air containing heat to the temperature and humidity adjustment chamber to heat the interior. If the internal temperature is higher than the set value, the servo motor rotates in the opposite direction, causing the semiconductor electronic refrigeration sheet to rotate 180 degrees so that its cold end faces upward. Similarly, under the action of the first fan, cold air is blown to the temperature and humidity adjustment chamber to cool the interior. In this way, the direction of the semiconductor electronic refrigeration sheet can be flexibly adjusted according to the internal temperature of the test chamber, thereby quickly achieving cooling or heating.

[0022] 2. The present invention can realize humidity regulation of the material placement chamber. The humidity sensor can monitor the humidity in real time and improve the internal temperature while adjusting the humidity. If the humidity is lower than the set value, the water pump outside the water delivery pipe is turned on to extract the water inside the water tank and transport it to the water distribution pipe. One end of the water distribution pipe is provided with an inclined nozzle, and the nozzle is equipped with a piezoelectric ceramic microporous atomizing sheet. Under the action of the driver, the water is broken into water mist, and the first fan is cooperated to quickly transport it to the inside of the material placement chamber to achieve humidity improvement. If the humidity is higher than the set value, under the adjustment of the servo motor, the first heat conduction plate is made to face upward. At this time, the first fan is closed, the efficiency of thermal superconductivity is reduced, and it will not affect the inside of the material placement chamber. Since the temperature of the first heat conduction plate drops rapidly, it condenses with the surrounding air, thereby quickly reducing the air humidity. The first heat conduction plate is inclined, and the condensed water droplets move rapidly downward under the action of gravity. Under the blocking of the water guide plate, they can move to the water tank. In this way, not only can the temperature and humidity in the material placement chamber be quickly adjusted, but also the condensed water can be collected and reused.

[0023] 3. During the adjustment process of the semiconductor electronic refrigeration plate of the present invention, the driving gear on the output shaft of the servo motor drives the driven gear to rotate through the transmission gear, and then the two threaded rods can rotate synchronously under the action of the chain belt. The sliding block and the threaded rod can drive the water tank to move under the threaded cooperation. The interior of the water tank is divided into a hot water chamber and a cold water chamber. When the first heat conducting plate is facing upward, the hot water chamber is located at the lower end of the second heat conducting plate. Turning on the second fan above can conduct heat to the interior of the hot water chamber, thereby heating the internal water body. If the second heat conducting plate is facing upward, the cold water chamber is located at the lower end of the first heat conducting plate. The lower end of the plate can cooperate with the second fan to cool the internal water. Therefore, when the humidity of the material placement chamber is adjusted, the internal temperature can be appropriately improved. When the temperature needs to be increased during the humidification process, the solenoid valve of the cold water pipe is closed and the solenoid valve of the hot water pipe is opened. Then, the water inside the hot water chamber is used to assist in heating and humidification. Conversely, the solenoid valve of the cold water pipe is opened and the solenoid valve of the hot water pipe is closed. The water inside the cold water chamber is used to assist in cooling and humidification. In this way, through the linkage of the water tank and the semiconductor electronic refrigeration sheet, heat recovery is achieved, and humidification is assisted at the same time, and the functionality is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the internal structure of the present invention;

[0025] Figure 2 For the present invention Figure 1 A partial enlarged view of the middle A area;

[0026] Figure 3 A three-dimensional diagram of the internal structure of the temperature and humidity regulating chamber of the present invention;

[0027] Figure 4 It is a rear view of the box body of the present invention;

[0028] Figure 5 For the present invention Figure 1 A partial enlarged view of area B.

[0029] In the figure: 1. box body; 2. humidity sensor; 3. temperature sensor; 4. material placement chamber; 5. temperature and humidity adjustment chamber; 6. first fan; 7. fixing plate; 8. temperature adjustment device; 9. water tank; 10. second fan; 11. threaded rod; 12. sliding block; 13. cold water pipe; 14. transmission chamber; 15. servo motor; 16. driving gear; 17. nozzle; 18. driver; 19. water distribution pipe; 20. semiconductor electronic refrigeration sheet; 21. first heat conduction plate; 22. second heat conduction plate; 23. connecting shaft; 24. water guide plate; 25. water supply main pipe; 26. air duct; 27. air inlet; 28. air outlet; 29. ​​partition; 30. transmission gear; 31. driven gear; 32. chain belt; 33. hot water pipe. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] See also Figure 1-5 , an embodiment of the present invention: a constant temperature and humidity test box for testing building materials and a working method thereof, comprising a box body 1, a material placement chamber 4 is arranged at the upper end of the box body 1, a humidity sensor 2 and a temperature sensor 3 are respectively installed at the upper end of the material placement chamber 4, and a partition for placing building materials is installed at the middle position of the material placement chamber 4;

[0032] It also includes a temperature and humidity regulating chamber 5, which is arranged below the material placement chamber 4, a first fan 6 with a rectangular distribution is arranged above the temperature and humidity regulating chamber 5, a fixing plate 7 is arranged at the middle position of the temperature and humidity regulating chamber 5, and the fixing plate 7 is fixedly connected to the box body 1, and a temperature regulating device 8 with a rectangular distribution is arranged inside the fixing plate 7, the temperature regulating devices 8 adjacent to each other on both sides are fixed by a connecting shaft, and the connecting shaft is rotatably connected to the fixing plate 7, the outer side of the temperature regulating device 8 on one side is connected to the fixing plate 7 by a rotating shaft, and the outer side of the temperature regulating device 8 on the other side is provided with a connecting shaft 23;

[0033] The transmission chamber 14 is arranged at the lower end of one side of the housing 1 , and the connecting shaft 23 extends into the transmission chamber 14 . A servo motor 15 is fixedly installed in the transmission chamber 14 , and the output shaft of the servo motor 15 is transmission-connected to one end of the connecting shaft 23 .

[0034] See also Figure 1-3 The temperature regulating device 8 is composed of a semiconductor electronic refrigeration sheet 20, a first heat conducting plate 21 and a second heat conducting plate 22. The first heat conducting plate 21 is fixedly arranged at the cold end of the semiconductor electronic refrigeration sheet 20, and the second heat conducting plate 22 is fixedly arranged at the hot end of the semiconductor electronic refrigeration sheet 20. When the power supply of the semiconductor electronic refrigeration sheet 20 is turned on, when direct current passes through the galvanic couple formed by two different types of semiconductor materials connected in series, heat dissipation and absorption are respectively realized at both ends of the galvanic couple.

[0035] See also Figure 1 , Figure 3 and Figure 5 A water tank 9 is provided at the bottom of the temperature and humidity regulating chamber 5, and two water tanks 9 are provided. Sliding blocks 12 are fixedly provided at the front and rear ends of the water tank 9. Threaded rods 11 are rotatably installed at the front and rear ends of the bottom of the temperature and humidity regulating chamber 5. The threaded rods 11 are threadedly matched with the sliding blocks 12. One end of the threaded rods 11 extends to the inside of the transmission chamber 14, and the one end of the threaded rods 11 is transmitted through a chain belt 32. One end of one of the threaded rods 11 located inside the transmission chamber 14 is fixedly provided with a driven gear 31. A driving gear 16 is installed at the middle position of the output shaft of the servo motor 15. A transmission gear 30 is meshedly connected below the driving gear 16, and the transmission gear 30 is meshedly connected with the driven gear 31. Through the linkage cooperation between the water tank 9 and the semiconductor electronic refrigeration sheet 20, heat recovery is realized, and humidification is assisted at the same time, and the functionality is further improved.

[0036] See also Figure 1 and Figure 3 A water distribution pipe 19 is provided on the rear side of the first fan 6, four nozzles 17 are provided on the upper end of the water distribution pipe 19, and the nozzle 17 is inclined toward the first fan 6, a piezoelectric ceramic microporous atomizing sheet is provided inside the nozzle 17, a driver 18 is provided on one side of the nozzle 17, and the driver 18 is meshed and connected with the nozzle 17, a water supply pipe 25 is provided at one end of the water distribution pipe 19, and the water supply pipe 25 extends to the inside of the temperature and humidity regulating chamber 5, and a water pump is installed at the middle position of the water supply pipe 25.

[0037] See also Figure 1 and Figure 3 The interior of the water tank 9 is divided into a hot water chamber and a cold water chamber. A second fan 10 is arranged above the hot water chamber and the cold water chamber, and the second fan 10 is located directly below the temperature adjustment device 8. A hot water pipe 33 is arranged at the upper end of the hot water chamber, and one end of the hot water pipe 33 is connected to the water supply pipe 25. A cold water pipe 13 is arranged at the upper end of the cold water chamber, and one end of the cold water pipe 13 is connected to the water supply pipe 25. Solenoid valves are installed on the outside of the cold water pipe 13 and the hot water pipe 33, which can not only quickly adjust the temperature and humidity in the material placement chamber 4, but also collect and reuse the condensed water.

[0038] See also Figure 1 and Figure 2 Water guide plates 24 are provided below both sides of the temperature regulating device 8. The water guide plates 24 are inclined toward the temperature regulating device 8, and the water guide plates 24 are plugged and fixed to the fixing plate 7. The water guide plates 24 guide the condensed water on the surface of the first heat conducting plate 21 into the water tank 9. The condensed water droplets move rapidly downward under the action of gravity, and can move to the water tank 9 under the obstruction of the water guide plates 24.

[0039] See also Figure 4 An air duct 26 is provided at the rear end of the box body 1, an air inlet 27 is provided at one end of the air duct 26, and a dustproof net is provided inside the air inlet 27, and an air outlet 28 is provided at the other end of the air duct 26, and a fiber cotton filter layer is provided inside the air outlet 28, which can intercept dust and impurities in the air at the air inlet 27 and the air outlet 28.

[0040] See also Figure 4 The air duct 26 has an S-shaped structure, and a plurality of staggered partitions 29 are arranged inside the air duct 26 . The partitions 29 have an inclined structure, and the air moves irregularly in the air duct 26 , and fine dust can accumulate at the angle of the partitions 29 .

[0041] See also Figure 1 Two doors are installed at the front end of the box body 1, and the doors are connected to the box body 1 through hinges, and observation windows are arranged inside the doors.

[0042] The working method of the constant temperature and humidity test chamber for building material testing includes the following steps:

[0043] Step 1, the temperature sensor 3 can monitor the internal temperature of the material placement chamber 4. When the internal temperature is lower than the set value, the servo motor 15 is turned on, and its output shaft drives the connecting shaft 23 to rotate, so that the second heat conducting plate 22 faces upward, and the power of the semiconductor electronic refrigeration plate 20 is turned on. At this time, the surface that is in contact with the second heat conducting plate 22 is the hot end. As the second heat conducting plate 22 continues to heat the surrounding air, the first fan 6 is used to transport the air containing heat to the temperature and humidity regulating chamber 5 to heat the interior. When the internal temperature is higher than the set value, the servo motor 15 rotates in the opposite direction, causing the semiconductor electronic refrigeration plate 20 to rotate 180 degrees, so that its cold end faces upward. Similarly, under the action of the first fan 6, cold air is blown to the temperature and humidity regulating chamber 5 to control the interior. Cold, during the adjustment of the semiconductor electronic refrigeration plate, the driving gear 16 on the output shaft of the servo motor 15 drives the driven gear 31 to rotate through the transmission gear 30, and then the two threaded rods 11 can rotate synchronously under the action of the chain belt 32, and the sliding block 12 and the threaded rod 11 can drive the water tank 9 to move under the threaded cooperation. The interior of the water tank is divided into a hot water chamber and a cold water chamber. When the first heat conducting plate 21 faces upward, the hot water chamber is located at the lower end of the second heat conducting plate 22. Turning on the second fan 10 above can conduct heat to the inside of the hot water chamber, thereby heating the internal water body. If the second heat conducting plate 22 faces upward, the cold water chamber is located at the lower end of the first heat conducting plate 21, and the second fan 10 can be used to cool the internal water;

[0044] Step 2, the humidity sensor 2 can monitor the humidity in real time, and can improve the internal temperature while adjusting the humidity. If the humidity is lower than the set value, the water pump outside the water supply main pipe 25 is turned on to extract the water inside the water tank 9 and transport it to the water distribution pipe 19. Under the action of the driver 18, the water is broken into water mist, and the first fan 6 is used to quickly transport it to the material placement chamber 4 to increase the humidity. When the humidity is higher than the set value, the servo motor 15 adjusts the first heat conduction plate 21 to face upward. At this time, the first fan 6 is turned off, the efficiency of thermal superconductivity is reduced, and it will not affect the inside of the material placement chamber 4. Due to the temperature of the first heat conduction plate 21 The temperature drops rapidly and condenses with the surrounding air, thereby quickly reducing the air humidity. The first heat conducting plate 21 is arranged at an angle, and the condensed water droplets move rapidly downward under the action of gravity. Under the obstruction of the water conducting plate 24, they can move to the water tank 9. At the same time, when the humidity of the material placement chamber 4 is adjusted, the internal temperature can be appropriately improved. When the temperature needs to be increased during the humidification process, the solenoid valve of the cold water pipe 13 is closed, and the solenoid valve of the hot water pipe 33 is opened. Then, the water inside the hot water chamber is used to assist in heating and humidification. Conversely, the solenoid valve of the cold water pipe 13 is opened, and the solenoid valve of the hot water pipe 33 is closed, and the water inside the cold water chamber is used to assist in cooling and humidification.

[0045] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A constant temperature and humidity test chamber for testing building materials, comprising a chamber (1), wherein a material placement chamber (4) is provided at the upper end of the chamber (1), a humidity sensor (2) and a temperature sensor (3) are respectively installed at the upper end of the material placement chamber (4), and a partition for placing building materials is installed at the middle position of the material placement chamber (4), characterized in that: It also comprises a temperature and humidity regulating chamber (5), which is arranged below the material placement chamber (4); a first fan (6) arranged in a rectangular shape is arranged above the temperature and humidity regulating chamber (5); a fixing plate (7) is arranged at the middle position of the temperature and humidity regulating chamber (5); the fixing plate (7) is fixedly connected to the box body (1); a temperature regulating device (8) arranged in a rectangular shape is arranged inside the fixing plate (7); the temperature regulating devices (8) adjacent to each other on both sides are fixed by a connecting shaft, and the connecting shaft is rotatably connected to the fixing plate (7); the outer side of the temperature regulating device (8) on one side is connected to the fixing plate (7) by a rotating shaft; the outer side of the temperature regulating device (8) on the other side is provided with a connecting shaft (23); the temperature regulating device (8) comprises a semiconductor electronic refrigeration plate (20), a first heat conducting plate (21) and a second heat conducting plate (22). The first heat conducting plate (21) is fixedly arranged at the cold end of the semiconductor electronic refrigeration plate (20), the second heat conducting plate (22) is fixedly arranged at the hot end of the semiconductor electronic refrigeration plate (20), a water distribution pipe (19) is arranged at the rear side of the first fan (6), four nozzles (17) are arranged at the upper end of the water distribution pipe (19), and the nozzles (17) are arranged obliquely toward the first fan (6), a piezoelectric ceramic microporous atomizing sheet is arranged inside the nozzle (17), a driver (18) is arranged on one side of the nozzle (17), and the driver (18) is meshedly connected to the nozzle (17), a water supply pipe (25) is arranged at one end of the water distribution pipe (19), and the water supply pipe (25) extends to the inside of the temperature and humidity adjustment chamber (5), and a water pump is installed at the middle position of the water supply pipe (25); A transmission chamber (14) is arranged at the lower end of one side of the housing (1), and a connecting shaft (23) extends into the transmission chamber (14). A servo motor (15) is fixedly installed in the transmission chamber (14), and the output shaft of the servo motor (15) is transmission-connected to one end of the connecting shaft (23). A water tank (9) is arranged at the bottom of the temperature and humidity adjustment chamber (5), and two water tanks (9) are arranged. Sliding blocks (12) are fixedly arranged at the front and rear ends of the water tanks (9). Threaded rods (11) are rotatably installed at the front and rear ends of the bottom of the temperature and humidity adjustment chamber (5). The threaded rods (11) are threadedly matched with the sliding blocks (12). One end of the threaded rods (11) extends into the transmission chamber (14), and the ends of the threaded rods (11) are transmitted through a chain belt (32). One of the threaded rods (11) is located in the transmission chamber (14). ) is fixedly provided with a driven gear (31) at one end inside the servo motor (15), a driving gear (16) is installed at the middle position of the output shaft of the servo motor (15), a transmission gear (30) is meshedly connected to the bottom of the driving gear (16), and the transmission gear (30) is meshedly connected to the driven gear (31), the inside of the water tank (9) is divided into a hot water chamber and a cold water chamber, a second fan (10) is provided above the hot water chamber and the cold water chamber, and the second fan (10) is located directly below the temperature adjustment device (8), a hot water pipe (33) is provided at the upper end of the hot water chamber, and one end of the hot water pipe (33) is connected to the water supply pipe (25), a cold water pipe (13) is provided at the upper end of the cold water chamber, and one end of the cold water pipe (13) is connected to the water supply pipe (25), and solenoid valves are installed on the outside of the cold water pipe (13) and the hot water pipe (33).

2. A constant temperature and humidity test chamber for testing building materials according to claim 1, characterized in that: Water guide plates (24) are provided below both sides of the temperature regulating device (8); the water guide plates (24) are inclined toward the temperature regulating device (8); and the water guide plates (24) are plugged and fixed to the fixing plate (7); the water guide plates (24) guide condensed water on the surface of the first heat conducting plate (21) into the water tank (9).

3. A constant temperature and humidity test box for building material testing according to claim 2, characterized in that: An air duct (26) is provided at the rear end of the box body (1); an air inlet (27) is provided at one end of the air duct (26); a dustproof net is provided inside the air inlet (27); an air outlet (28) is provided at the other end of the air duct (26); a fiber cotton filter layer is provided inside the air outlet (28).

4. A constant temperature and humidity test box for building material testing according to claim 3, characterized in that: The air duct (26) has an S-shaped structure, and a plurality of staggered partitions (29) are arranged inside the air duct (26), and the partitions (29) have an inclined structure.

5. A constant temperature and humidity test box for testing building materials according to claim 4, characterized in that: Two box doors are installed at the front end of the box body (1), and the box doors are connected to the box body (1) via hinges, and observation windows are arranged inside the box doors.

6. The working method of the constant temperature and humidity test chamber for building material testing according to claim 5, characterized in that: The steps include: Step 1: The temperature sensor (3) can monitor the internal temperature of the material placement chamber (4). When the internal temperature is lower than the set value, the servo motor (15) is turned on, and its output shaft drives the connecting shaft (23) to rotate, so that the second heat conducting plate (22) faces upward, and the power supply of the semiconductor electronic refrigeration plate (20) is turned on. At this time, the surface in contact with the second heat conducting plate (22) is the hot end. As the second heat conducting plate (22) continuously heats the surrounding air, the first fan (6) is used to transport the air containing heat to the temperature and humidity adjustment chamber (5) to heat the interior. When the internal temperature is higher than the set value, the servo motor (15) rotates in the opposite direction, so that the semiconductor electronic refrigeration plate (20) rotates 180 degrees, so that its cold end faces upward. Similarly, under the action of the first fan (6), cold air is blown to the temperature and humidity adjustment chamber (5) to cool the interior. During the adjustment of the semiconductor electronic refrigeration plate, the driving gear (16) on the output shaft of the servo motor (15) drives the driven gear (31) to rotate through the transmission gear (30), and then the two threaded rods (11) are able to rotate synchronously under the action of the chain belt (32). The sliding block (12) and the threaded rod (11) can drive the water tank (9) to move under the threaded cooperation. The interior of the water tank is divided into a hot water chamber and a cold water chamber. When the first heat conducting plate (21) faces upward, the hot water chamber is located at the lower end of the second heat conducting plate (22). When the second fan (10) above is turned on, heat can be transferred to the interior of the hot water chamber, thereby heating the internal water body. When the second heat conducting plate (22) faces upward, the cold water chamber is located at the lower end of the first heat conducting plate (21). The second fan (10) can be used to cool the internal water. Step 2: The humidity sensor (2) can monitor the humidity in real time and can improve the internal temperature while adjusting the humidity. If the humidity is lower than the set value, the water pump outside the water supply main pipe (25) is turned on to pump the water inside the water tank (9) and transport it to the water distribution pipe (19). Under the action of the driver (18), the water is broken into water mist, and the first fan (6) is used to quickly transport it to the inside of the material placement chamber (4) to increase the humidity. When the humidity is higher than the set value, the servo motor (15) is adjusted to make the first heat conduction plate (21) face upward. At this time, the first fan (6) is turned off, and the efficiency of thermal superconductivity is reduced, which will not affect the inside of the material placement chamber (4). Since the first heat conduction plate ( 21) the temperature drops rapidly and condenses with the surrounding air, thereby rapidly reducing the air humidity. The first heat conducting plate (21) is arranged at an angle, and the condensed water droplets move rapidly downward under the action of gravity. Under the blockage of the water conducting plate (24), they can move to the water tank (9). At the same time, when the humidity of the material placement chamber (4) is adjusted, the internal temperature can be appropriately improved. When the temperature needs to be increased during the humidification process, the solenoid valve of the cold water pipe (13) is closed and the solenoid valve of the hot water pipe (33) is opened. Then, the water inside the hot water chamber is used to assist in heating and humidification. Conversely, the solenoid valve of the cold water pipe (13) is opened and the solenoid valve of the hot water pipe (33) is closed. Then, the water inside the cold water chamber is used to assist in cooling and humidification.

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