Dew point tracking dehumidification device of high-precision constant-temperature and constant-humidity air conditioner

Abstract

The invention relates to the technical field of dehumidification devices, in particular to a dew point tracking dehumidification device of a high-precision constant-temperature and constant-humidity air conditioner. The air conditioner comprises an air conditioner frame body, an air return frame and an air supply frame are fixedly connected to the surface of the air conditioner frame body, a conveying assembly is arranged in an inner cavity of the air conditioner frame body and comprises an obliquely-arranged air return pipe communicated with the air return frame, and a first humidity sensor is arranged in an inner cavity of the air return pipe. An annular groove is formed in the lowest position of the air return pipe cavity. The inclined air return pipe is arranged, condensate water directionally flows to the annular groove s2 from s1 through gravity and is prevented from randomly dripping to the first humidity sensor installation area, the super-hydrophobic polytetrafluoroethylene coating enables the condensate water to form water drops instead of a continuous water film on the pipe wall, the condensate water rapidly slides to the groove, the water film retention risk in the sensor area is reduced, and the humidity sensor installation efficiency is improved. The annular groove s2 is directly communicated with the drainage pipe a1 through a drainage groove, and condensate water converges into the water collection structure of the dehumidification assembly through gravity.

Description

Technical Field

[0001] The present invention relates to the technical field of dehumidification devices, and in particular to a dew point tracking dehumidification device for a high-precision constant temperature and humidity air conditioner. Background Art

[0002] In many high-precision environments, such as electronic chip manufacturing workshops, the chip manufacturing process is extremely sensitive to ambient temperature and humidity. Slight fluctuations in temperature and humidity may cause unstable chip performance or even scrap.

[0003] The return air humidity is continuously monitored by a high-precision humidity sensor in the return air duct, and the data is transmitted to the central controller in real time. The controller sends instructions to the evaporator control module based on the preset humidity target value. The return air carrying moist hot air enters the evaporator through the return air inlet. The low-temperature coil in the evaporator absorbs heat through the evaporation of the refrigerant, causing the air temperature to drop below the dew point temperature. The water vapor in the evaporator condenses into liquid water when it is cooled, adheres to the surface of the coil, and then flows into the water collection pan for discharge, achieving efficient dehumidification. The dehumidified air has a lower temperature due to the large amount of heat absorbed. At this time, the air enters the reheater. According to the instructions of the controller, the reheater accurately compensates for the drop in air temperature caused by dehumidification through electric heating, hot water circulation, or steam heat exchange, so that the air returns to the set temperature. The air, which has undergone dual temperature and humidity adjustment, is finally delivered to the target environment through the air outlet. For example, the Chinese patent publication number CN222732926U is a dual-cooling source low dew point direct expansion dehumidification unit;

[0004] Considering that in high-humidity areas such as the southern coastal areas, when the outdoor high-temperature and high-humidity air enters the return air duct through the return air inlet, the temperature of the refrigeration area around the evaporator is as low as 10℃-15℃, while the air temperature in the return air duct remains at 25℃-30℃, and there is a significant temperature difference between the two. During the transmission process, the high-temperature and high-humidity air in the pipe comes into contact with the low-temperature pipe wall. Under the dew point temperature effect, water vapor quickly condenses into water droplets on the inner wall of the return air duct and gradually accumulates. Since the humidity sensor is installed in the return air duct to monitor the air humidity before entering the evaporator, these residual water droplets will interfere with the sensor, causing the humidity signal it detects to deviate and fail to accurately reflect the actual air humidity. Summary of the Invention

[0005] The object of the present invention is to provide a dew point tracking dehumidification device for a high-precision constant temperature and humidity air conditioner to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides a dew point tracking dehumidification device for a high-precision constant temperature and humidity air conditioner, comprising an air conditioner frame body, a return air rack and an air supply rack being fixedly connected to the surface of the air conditioner frame body, a conveying assembly being provided in the inner cavity of the air conditioner frame body, the conveying assembly comprising an inclined return air duct connected to the return air rack, a first humidity sensor being provided in the inner cavity of the return air duct, and an annular groove being provided at the lowest point of the inner cavity of the return air duct for receiving condensed water condensed on the inner wall of the return air duct;

[0007] The surface of the conveying component is clamped with an insulation component, which includes insulation cotton and is coated on the outer surface of the return air duct to block the heat exchange between the low-temperature air in the duct and the outside world;

[0008] The end of the conveying component is connected to a dehumidification component for collecting and discharging condensed water from the return air duct and the inner cavity of the dehumidification component;

[0009] By tilting the return air duct, gravity is used to make the condensed water generated by the temperature difference in the duct flow along the duct wall to the lowest annular groove, avoiding the condensed water adhering to the surface of the first humidity sensor and causing interference or damage. At the same time, the condensed water is condensed and discharged in advance in the return air duct, achieving a pre-dehumidification effect on the air, reducing the initial moisture content of the air, and thus reducing the workload of the dehumidification component. By connecting the conveying component with the dehumidification component, the excess condensed water in the inner cavity of the conveying component can be directly collected in the water collection structure of the dehumidification component, and combined with the condensed water generated during the operation of the dehumidification component and discharged synchronously from the air conditioner, avoiding the need to set up independent drainage.

[0010] As a further improvement of the present technical solution, a diverter plate is fixedly connected to the inner end of the return air duct, and a plurality of air inlet holes are opened on the surface of the diverter plate for dispersing the gas entering the inner cavity of the return air duct; a bracket is fixedly connected to the bottom of the inner cavity of the air-conditioning frame body, the surface of the bracket is fixedly connected to the fixing bracket, the return air duct is fixedly installed on the inner wall of the fixing bracket, and the return air duct is fixedly set at an inclined angle of 15°; the inner wall of the return air duct is covered with a super-hydrophobic polytetrafluoroethylene coating, so that condensed water forms water droplets on the pipe wall and quickly slides down into the annular groove; the first humidity sensor is installed in the high-position area at the front end of the annular groove, and the surface of the annular groove is set to an arc-shaped guide structure, which, together with the inclination angle of the return air duct, constitutes a gravity drainage channel; a drainage groove is opened on the inner wall of the annular groove, and the inner wall of the drainage groove is fixedly connected to a drainage pipe, the drainage pipe is located on the outer surface of the return air duct, and the end of the drainage pipe away from the return air duct is connected to the dehumidification component.

[0011] When high-temperature and high-humidity air is dispersed into the return air duct at s1 through the diverter plate, water vapor condenses on the inner wall of the return air duct due to the low temperature environment of 10℃-15℃ in the duct. The super-hydrophobic coating prevents the condensed water from forming a continuous water film on the duct wall. Instead, it gathers into water droplets and flows rapidly along the inclined shape of the return air duct to the low-position annular groove s2. The drainage groove serves as a diversion channel to guide the condensed water into the drainage pipe a1. The synergistic effect of the fluid static pressure difference and gravity is used to continuously discharge the condensed water into the water collection structure a2 of the dehumidification component through the drainage pipe, realizing the centralized collection and unified discharge of the condensed water.

[0012] As a further improvement of the present technical solution, a connecting frame is sleeved on the surface of the fixing frame, and the inner wall of the connecting frame is tightly fitted to fix the thermal insulation cotton to form an insulation layer that completely covers the surface of the return air duct. A limiting groove is provided on the surface of the fixing frame, and the connecting frame is integrally formed of an elastic plastic material, and a limiting column extending from its surface is adapted to the limiting groove.

[0013] The elastic deformation ability of the connecting frame is used to cover the surface of the fixing frame, so that the limiting column and the limiting groove are plugged in. The insulation cotton is now covered on the outer surface of the return air duct, which can reduce the transfer of external heat to the return air duct.

[0014] As a further improvement of the present technical solution, the dehumidification assembly includes an evaporator fixedly connected to the inner cavity of the air-conditioning frame body, the inner wall of the evaporator is fixedly connected to the end of the return air duct, and the inner wall of the evaporator is connected to the end of the drain pipe, the inner cavity of the evaporator is fixedly connected to a low-temperature disk, the bottom of the inner cavity of the evaporator is fixedly connected to a gathering water tank, the drain pipe extends to the inner cavity of the evaporator and is arranged directly above the gathering water tank, the inner cavity of the air-conditioning frame body is fixedly connected to a reheater, the evaporator and the reheater are connected through a pipeline, the inner cavity of the reheater is fixedly connected to an air supply pipe, the inner cavity of the air supply pipe is fixedly connected to a second humidity sensor, and the end of the air supply pipe away from the reheater is fixedly connected to the air supply frame;

[0015] The low-temperature dry air after pre-dehumidification in the return air duct and deep dehumidification in the evaporator is transported to the reheater through the pipeline. The reheater heats the air through electric heating or utilizing the waste heat of the air-conditioning system to avoid the problem of low supply air temperature caused by excessive dehumidification and improve the comfort of air outlet. The heated air enters the supply air duct, and its humidity data is monitored in real time by the second humidity sensor. If the humidity meets the standard, the air is transported to the supply air rack through the supply air duct and finally discharged into the room, completing the entire air treatment process, forming an inlet humidity detection-dehumidification treatment-outlet humidity feedback.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In this high-precision constant temperature and humidity air conditioner's dew-point tracking dehumidification device, an inclined return air duct utilizes gravity to direct condensed water from s1 toward the annular groove s2, preventing it from randomly dripping onto the first humidity sensor mounting area. The super-hydrophobic polytetrafluoroethylene coating forms droplets on the duct wall rather than a continuous water film, allowing the condensed water to quickly slide down into the groove, reducing the risk of water film stagnation in the sensor area.

[0018] The annular groove s2 is directly connected to the drain pipe a1 through the drainage groove. The condensed water flows into the water collection structure a2 of the dehumidification component by gravity. There is no need to add an independent drainage pump or valve. The condensed water is discharged together with the dehumidification component, avoiding the leakage of the drainage outlet to interfere with the negative pressure environment of the evaporator.

[0019] 2. The dew point tracking dehumidification device of this high-precision constant temperature and humidity air conditioner achieves a pre-dehumidification effect on the air by condensing the condensed water in the return air duct and discharging it in advance, reducing the initial moisture content of the air, thereby reducing the workload of the dehumidification component, shortening its operating time, and improving energy efficiency;

[0020] The thermal insulation cotton is wrapped around the outer wall of the return air duct to reduce the transfer of external heat to the return air duct, so that the temperature is maintained above the dew point, reducing the generation of condensed water on the outer wall of the return air duct, and avoiding damage to the internal electronic components of the air conditioner due to condensation. The connection between the connecting frame and the fixing frame enables quick disassembly and assembly without tools, which shortens the installation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure assembly of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall structure of the conveying assembly of the present invention;

[0023] Figure 3 This is a schematic diagram of the diverter plate structure of the present invention;

[0024] Figure 4 For the present invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0025] Figure 5 This is a schematic diagram of the drainage pipe structure of the present invention;

[0026] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure at point B;

[0027] Figure 7 Schematic diagram of the structure of the first humidity sensor of the present invention;

[0028] Figure 8 This is a schematic diagram of the dehumidification component structure of the present invention.

[0029] The meaning of each number in the figure is:

[0030] 100, air conditioning frame body; 110, return air frame; 120, supply air frame;

[0031] 200, conveying assembly; 210, return air duct; 2101, annular groove; 2102, drainage groove; 220, first humidity sensor; 230, diverter plate; 240, drainage pipe; 250, fixing bracket; 2501, limiting groove; 260, bracket;

[0032] 300, insulation assembly; 310, connecting frame; 320, insulation cotton; 330, limiting column;

[0033] 400, dehumidification component; 410, evaporator; 420, low temperature plate; 430, gathering water tank;

[0034] 500, reheater;

[0035] 600, air supply duct; 610, second humidity sensor. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] Example 1

[0038] See also Figures 1-8 As shown, this embodiment provides a dew point tracking dehumidification device for a high-precision constant temperature and humidity air conditioner, including an air conditioner frame body 100, a return air frame 110 and an air supply frame 120 fixedly connected to the surface of the air conditioner frame body 100, a conveying assembly 200 is provided in the inner cavity of the air conditioner frame body 100, the conveying assembly 200 includes an inclined return air duct 210, which is connected to the return air frame 110, a first humidity sensor 220 is provided in the inner cavity of the return air duct 210, and an annular groove 2101 is provided at the lowest point of the inner cavity of the return air duct 210 for receiving condensed water condensed on the inner wall of the return air duct 210;

[0039] The conveying component 200 is clamped with a heat preservation component 300. The heat preservation component 300 includes heat preservation cotton 320, which is coated on the outer surface of the return air duct 210 to prevent the heat exchange between the low-temperature air in the duct and the outside.

[0040] The end of the conveying assembly 200 is connected to the dehumidification assembly 400, which is used to collect and discharge the condensed water in the return air duct 210 and the inner cavity of the dehumidification assembly 400;

[0041] Considering that when the outdoor high-temperature and high-humidity air enters the return air duct 210 through the return air inlet, the temperature of the refrigeration area around the dehumidification component 400 is as low as 10℃-15℃, while the air temperature in the return air duct 210 is maintained at 25℃-30℃, there is a significant temperature difference between the two. During the transmission process, the high-temperature and high-humidity air in the pipe contacts the low-temperature pipe wall, and the water vapor quickly condenses into water droplets on the inner wall of the return air duct 210 due to the dew point temperature effect and gradually accumulates. Since the first humidity sensor 220 is installed in the return air duct 210 to monitor the air humidity before entering the evaporator 410, the residual water droplets will dry out. The interference sensor causes the humidity signal detection deviation and cannot accurately reflect the real air humidity. Therefore, by tilting the return air duct 210, the condensed water generated by the temperature difference in the pipe is caused to flow along the pipe wall to the lowest annular groove 2101 due to gravity, avoiding the condensed water adhering to the surface of the first humidity sensor 220 to cause interference or damage. At the same time, the condensed water is condensed and discharged in advance in the return air duct 210, achieving the pre-dehumidification effect on the air, reducing the initial moisture content of the air, thereby reducing the workload of the dehumidification component 400, shortening its operating time, and improving energy efficiency.

[0042] At the same time, considering that if a separate drainage device is set up for the condensed water discharged from the annular groove 2101 and discharged to the outside of the air conditioner, additional components will be required, resulting in a complex system structure and increased costs. Therefore, by connecting the conveying component 200 with the dehumidification component 400, the excess condensed water in the inner cavity of the conveying component 200 can be directly collected in the water collection structure of the dehumidification component 400, and then combined with the condensed water generated during the operation of the dehumidification component 400 and discharged from the air conditioner synchronously, avoiding the need to set up independent drainage and accessories separately.

[0043] On the basis of the above, the specific structure is disclosed in detail:

[0044] like Figure 2 As shown, in order to ensure that the gas entering the return air duct 210 can be evenly distributed in its inner cavity, a diverter plate 230 is fixedly connected to the end of the inner cavity of the return air duct 210, and a plurality of air inlet holes are opened on the surface of the diverter plate 230 for dispersing the gas entering the inner cavity of the return air duct 210; by dispersing the gas entering the return air duct 210 through the air inlet holes of the diverter plate 230, uniform flow of the gas in the inner cavity of the return air duct 210 is achieved, thereby avoiding local pressure unevenness or abnormal distribution of condensed water caused by air flow concentration.

[0045] like Figure 3As shown, in order to allow the condensed water in the return air duct 210 to flow to the lowest point, a bracket 260 is fixedly connected to the bottom of the inner cavity of the air-conditioning frame body 100, and a fixing frame 250 is fixedly connected to the surface of the bracket 260. The return air duct 210 is fixedly installed on the inner wall of the fixing frame 250, and the return air duct 210 is fixedly set at an inclined angle of 15°; the condensed water in the return air duct 210 is guided to flow to the lowest point by gravity, thereby realizing efficient collection and discharge of the condensed water.

[0046] like Figure 5 、 Figure 6 、 Figure 7 As shown, in order to prevent the condensed water in the return air duct 210 from adhering to the surface of the first humidity sensor 220 and to ensure that it flows smoothly to the annular groove 2101, the inner wall of the return air duct 210 is covered with a super-hydrophobic polytetrafluoroethylene coating, so that the condensed water forms water droplets on the pipe wall and quickly slides down to the annular groove 2101, the first humidity sensor 220 is installed in the high position area at the front end of the annular groove 2101, and the surface of the annular groove 2101 is designed as an arc-shaped guide structure, which, together with the inclination angle of the return air duct 210, constitutes a gravity drainage channel; when the high-temperature and high-humidity air is dispersed into the return air duct through the diverter plate 230 At s1 of 210, due to the low temperature environment of 10℃-15℃ in the pipe, water vapor condenses on the inner wall of the return air duct 210. The super-hydrophobic coating prevents the condensed water from forming a continuous water film on the pipe wall. Instead, it gathers into water droplets and flows rapidly along the inclined shape of the return air duct 210 to the low-position annular groove 2101s2. The arc-shaped groove structure further reduces the water flow resistance. Since the first humidity sensor 220 is located in the dry area at the front end of the annular groove 2101, and the inclined setting of the return air duct 210 reduces the residual water in the inner cavity, the first humidity sensor 220 can accurately detect the air humidity entering the inner cavity of the return air duct 210.

[0047] like Figure 2 、 Figure 5 、 Figure 6 As shown, in order to enable the annular groove 2101 to connect the condensed water with the dehumidification component 400, a drainage groove 2102 is opened on the inner wall of the annular groove 2101, and a drainage pipe 240 is fixedly connected to the inner wall of the drainage groove 2102. The drainage pipe 240 is located on the outer surface of the return air duct 210, and the end of the drainage pipe 240 away from the return air duct 210 is connected to the dehumidification component 400; when the condensed water in s1 of the return air duct 210 is drained to the annular groove 2101s2 by gravity, the drainage groove 2102 serves as a diversion channel to introduce the condensed water into the drainage pipe 240a1, and utilizes the synergistic effect of the fluid static pressure difference and gravity to continuously discharge the condensed water into the water collection structure a2 of the dehumidification component 400 through the drainage pipe 240, thereby realizing the centralized collection and unified discharge of the condensed water.

[0048] like Figure 3 、 Figure 4 As shown, considering that there is a significant temperature difference between the low-temperature air in the return air duct 210 and the high-temperature and high-humidity environment outside, when the high-temperature air contacts the outer surface of the return air duct 210, the temperature of the outer wall of the duct is lower than the dew point temperature, causing the external water vapor to condense on the outer wall of the duct to form water droplets. In order to prevent the condensed water from seeping out and damaging the internal electronic components of the air conditioner, the surface of the fixing frame 250 is sleeved with a connecting frame 310, and the inner wall of the connecting frame 310 is tightly fitted with the fixed insulation cotton 320 to form an insulation layer that completely covers the return air duct 210; by arranging the insulation cotton 320, the transfer of external heat to the return air duct 210 is reduced, and the generation of condensed water on the outer wall of the return air duct 210 is suppressed.

[0049] The surface of the fixing frame 250 is provided with a limiting groove 2501, and the connecting frame 310 is integrally formed of an elastic plastic material, and a limiting column 330 adapted to the limiting groove 2501 extends from its surface. During installation, the elastic deformation ability of the connecting frame 310 itself is utilized to be sleeved on the surface of the fixing frame 250, so that the limiting column 330 is plugged into the limiting groove 2501.

[0050] like Figure 8 As shown, in order to enable the dehumidification component 400 to receive the condensed water discharged from the drain pipe 240, it is necessary to further disclose the parts of the dehumidification component 400. Therefore, the dehumidification component 400 includes an evaporator 410 fixedly connected to the inner cavity of the air-conditioning frame body 100, the inner wall of the evaporator 410 is fixedly connected to the end of the return air pipe 210, and the inner wall of the evaporator 410 is connected to the end of the drain pipe 240, the inner cavity of the evaporator 410 is fixedly connected to a low-temperature disk 420, and the bottom of the inner cavity of the evaporator 410 is fixedly connected to a gathering tank 430; the pre-dehumidified air in the return air pipe 210s2 enters the evaporator 410s3 through the end opening, and is further condensed and dehumidified after contacting the low-temperature disk 420. The water vapor in the air condenses into water droplets and falls into the gathering tank 430 at the bottom. At the same time, the condensed water discharged from the annular groove 2101 of the return air pipe 210 directly flows into the inner cavity of the evaporator 410 through the drain pipe 240.

[0051] The drain pipe 240 extends to the inner cavity of the evaporator 410 and is arranged directly above the gathering water tank 430; when working, the condensed water collected by the annular groove 2101 of the return air duct 210 is discharged downward through the drain pipe 240a1 and directly falls into the gathering water tank 430a2 at the bottom of the evaporator 410. The condensed water collected by itself and the condensed water discharged by the drain pipe 240 can be gathered together, and the condensed water can be discharged in a centralized and orderly manner through the drainage channel at its bottom, thereby avoiding the accumulation of condensed water in the evaporator 410.

[0052] like Figure 8As shown, in order to enable the device to track the humidity of the gas in real time, a reheater 500 is fixedly connected to the inner cavity of the air conditioning frame body 100, the evaporator 410 is connected to the reheater 500 through a pipe, an air supply pipe 600 is fixedly connected to the inner cavity of the reheater 500, a second humidity sensor 610 is fixedly connected to the inner cavity of the air supply pipe 600, and the end of the air supply pipe 600 away from the reheater 500 is fixedly connected to the air supply frame 120;

[0053] The low-temperature dry air that has been pre-dehumidified by the return air duct 210 and deeply dehumidified by the evaporator 410 is transported to the reheater 500 through the pipeline. The reheater 500 heats the air by electric heating or utilizing the waste heat of the air-conditioning system to avoid the problem of low supply air temperature due to excessive dehumidification and improve the comfort of air outlet. The heated air enters the supply air duct 600, and its humidity data is monitored in real time by the second humidity sensor 610. If the humidity meets the standard, the air is transported to the supply air rack 120 through the supply air duct 600 and finally discharged into the room, completing the entire air treatment process, forming an inlet air humidity detection-dehumidification treatment-outlet air humidity feedback.

[0054] In summary, the workflow of the present invention is:

[0055] The outdoor high-temperature and high-humidity air enters the return air duct 210 through the return air frame 110, and the diverter plate 230 disperses the gas so that it flows evenly in the return air duct 210. Since the temperature in the return air duct 210 is as low as 10°C-15°C, there is a temperature difference with the air, and water vapor condenses into water droplets on the inner wall of the duct. The return air duct 210 is set at a 15° tilt, and with the super-hydrophobic polytetrafluoroethylene coating on the inner wall, the condensed water quickly flows to the lowest annular groove 2101, realizing air pre-dehumidification and preventing the condensed water from adhering to the surface of the first humidity sensor 220. The condensed water collected in the annular groove 2101 is transported to the evaporator 410 of the dehumidification component 400 through the inner wall drainage groove 2102 and the drainage pipe 240. The insulation component 3 00 thermal insulation cotton 320 covers the return air duct 210, reducing the heat exchange between the low-temperature air in the pipe and the outside world, inhibiting the generation of condensation water on the outer wall of the pipe, and protecting the internal electronic components of the air conditioner. At the same time, the pre-dehumidified air enters the evaporator 410, contacts the low-temperature disk 420 for further condensation and dehumidification, and the generated condensation water falls into the gathering water tank 430 at the bottom of the evaporator 410 together with the condensation water transported by the drain pipe 240, realizing centralized collection and unified discharge. The low-temperature dry air after dehumidification by the evaporator 410 enters the reheater 500 for heating to avoid the supply air temperature being too low. The heated air enters the supply air duct 600, and the second humidity sensor 610 monitors the humidity data in real time. If the humidity meets the standard, the air is discharged to the room through the supply air rack 120.

[0056] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A dew point tracking dehumidification device for a high-precision constant temperature and humidity air conditioner, comprising an air conditioner frame body (100), a return air frame (110) and an air supply frame (120) being fixedly connected to the surface of the air conditioner frame body (100), characterized in that: The inner cavity of the air conditioning frame body (100) is provided with a conveying assembly (200), the conveying assembly (200) includes an inclined return air duct (210) and is communicated with the return air frame (110), the inner cavity of the return air duct (210) is provided with a first humidity sensor (220), and an annular groove (2101) is provided at the lowest point of the inner cavity of the return air duct (210) for receiving condensed water condensed on the inner wall of the return air duct (210); The conveying component (200) is clamped with a heat-insulating component (300) on its surface. The heat-insulating component (300) includes heat-insulating cotton (320) and is coated on the outer surface of the return air duct (210) to prevent heat exchange between the low-temperature air in the duct and the outside. The end of the conveying component (200) is connected to the dehumidification component (400) for collecting and discharging condensed water in the return air duct (210) and the inner cavity of the dehumidification component (400).

2. The dew point tracking dehumidification device for a high-precision constant temperature and humidity air conditioner according to claim 1, characterized in that: A diverter plate (230) is fixedly connected to the inner end of the return air duct (210), and a plurality of air inlet holes are provided on the surface of the diverter plate (230) for dispersing the gas entering the inner cavity of the return air duct (210).

3. The dew point tracking dehumidification device for a high-precision constant temperature and humidity air conditioner according to claim 1, characterized in that: A bracket (260) is fixedly connected to the bottom of the inner cavity of the air-conditioning frame body (100), a fixing frame (250) is fixedly connected to the surface of the bracket (260), a return air duct (210) is fixedly installed on the inner wall of the fixing frame (250), and the return air duct (210) is fixedly arranged at an inclination angle of 15°.

4. The dew point tracking dehumidification device for a high-precision constant temperature and humidity air conditioner according to claim 1, characterized in that: The inner wall of the return air duct (210) is covered with a super-hydrophobic polytetrafluoroethylene coating, so that condensed water forms water droplets on the duct wall and quickly slides down to the annular groove (2101). The first humidity sensor (220) is installed in a high-position area at the front end of the annular groove (2101), and the surface of the annular groove (2101) is provided with an arc-shaped guide structure, which, in conjunction with the inclination angle of the return air duct (210), together constitutes a gravity drainage channel.

5. The dew point tracking dehumidification device for a high-precision constant temperature and humidity air conditioner according to claim 4, characterized in that: A drainage groove (2102) is provided on the inner wall of the annular groove (2101), and a drainage pipe (240) is fixedly connected to the inner wall of the drainage groove (2102). The drainage pipe (240) is located on the outer surface of the return air pipe (210), and one end of the drainage pipe (240) away from the return air pipe (210) is connected to the dehumidification component (400).

6. The dew point tracking dehumidification device for a high-precision constant temperature and humidity air conditioner according to claim 3, characterized in that: The surface of the fixing frame (250) is sleeved with a connecting frame (310), and the inner wall of the connecting frame (310) is fixedly connected with thermal insulation cotton (320), forming a heat insulation layer that completely covers the return air duct (210).

7. The dew point tracking dehumidification device for a high-precision constant temperature and humidity air conditioner according to claim 6, characterized in that: The surface of the fixing frame (250) is provided with a limiting groove (2501), and the connecting frame (310) is integrally formed of an elastic plastic material, and a limiting column (330) adapted to the limiting groove (2501) extends from its surface.

8. The dew point tracking dehumidification device for a high-precision constant temperature and humidity air conditioner according to claim 1, characterized in that: The dehumidification component (400) includes an evaporator (410) fixedly connected to the inner cavity of the air-conditioning frame body (100); the inner wall of the evaporator (410) is fixedly connected to the end of the return air duct (210), and the inner wall of the evaporator (410) is connected to the end of the drain pipe (240); the inner cavity of the evaporator (410) is fixedly connected to a low-temperature disk (420); and the bottom of the inner cavity of the evaporator (410) is fixedly connected to a gathering water tank (430).

9. The dew point tracking dehumidification device for a high-precision constant temperature and humidity air conditioner according to claim 8, characterized in that: The drainage pipe (240) extends to the inner cavity of the evaporator (410) and is arranged directly above the gathering water tank (430).

10. The dew point tracking dehumidification device for a high-precision constant temperature and humidity air conditioner according to claim 8, characterized in that: The inner cavity of the air-conditioning frame body (100) is fixedly connected to a reheater (500), the evaporator (410) is connected to the reheater (500) through a pipeline, the inner cavity of the reheater (500) is fixedly connected to an air supply pipe (600), the inner cavity of the air supply pipe (600) is fixedly connected to a second humidity sensor (610), and the end of the air supply pipe (600) away from the reheater (500) is fixedly connected to the air supply frame (120).

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