Purification constant-temperature and constant-humidity direct expansion machine for laboratory

Abstract

The purification constant-temperature and constant-humidity direct expansion machine comprises a humidity control section, a temperature control section and a fan section which are sequentially arranged from left to right, an air outlet is formed in the upper end face of the fan section, a motor and a fan are arranged in the fan section, a wind wheel is arranged in the fan, the wind wheel is connected with the motor through a belt, and the temperature control section is connected with the temperature control section. The motor and the fan are both arranged on the base, the base is connected with the inner wall of the box body of the fan section through a damper spring, the fan is connected with the air outlet, an electric heating plate, a refrigerating plate and a refrigerating cabin are arranged in a pipeline in the temperature control section, and the electric heating plate and the refrigerating plate are located on the same horizontal plane. A gap is reserved between the electric heating plate and the refrigeration plate, the refrigeration plate is connected with the refrigeration cabin, a pipeline of the temperature control section is connected with the humidity control section and the fan section, and the pipe diameter cross section area of the pipeline connecting the humidity control section and the fan section is larger than the pipe diameter cross section area of the middle of the pipeline.

Description

Technical Field

[0001] The invention belongs to the field of laboratory equipment, and in particular relates to a purification constant temperature and humidity direct expansion machine used in laboratories. Background Art

[0002] Laboratory environment control is a vital part of scientific research and precision testing. The temperature, humidity and air quality of the laboratory directly affect the accuracy and repeatability of the experimental results. With the development of science and technology, the requirements for the experimental environment are getting higher and higher, especially in the fields of biology, chemistry, physics and electronics, the precision requirements for temperature and humidity control and air purification are even more stringent. In this context, the purification constant temperature and humidity direct expansion machine came into being and became a key equipment for laboratory environment control.

[0003] The purification constant temperature and humidity direct expansion machine is an air conditioning system that integrates air purification, temperature control and humidity regulation. It achieves refrigeration by directly evaporating the refrigerant, and is equipped with heating and humidification devices to accurately control the indoor temperature and humidity. In addition, it also has an efficient air filtration system that can remove particulate matter, harmful gases and microorganisms in the air, providing a clean air environment for the laboratory.

[0004] The existing laboratory purification constant temperature and humidity direct expansion machine technology still has many shortcomings:

[0005] Low energy efficiency: Most existing systems often ignore energy efficiency while achieving precise temperature and humidity control. Frequent cooling, heating and humidification processes result in high energy consumption, which does not meet the current requirements of energy conservation and environmental protection. Insufficient precision of temperature and humidity control: Although existing technologies can achieve a certain degree of temperature and humidity control, they often cannot be adjusted in time when faced with rapidly changing experimental conditions or external environmental interference, resulting in fluctuations in the experimental environment. Limited air purification effect: The air purification function of existing systems often only targets specific types of pollutants and cannot comprehensively deal with complex laboratory air pollution problems. For example, the processing capacity for volatile organic compounds (VOCs) or special gases is insufficient. Slow system response speed: When the experimental environmental conditions need to be changed quickly, the response speed of existing systems often cannot meet the requirements, affecting the experimental progress and results. Unsatisfactory noise control: The noise generated by the direct expansion machine during operation may interfere with precision experiments or affect the work efficiency of researchers. Existing technologies still have a lot of room for improvement in noise reduction. High maintenance cost: The complex system structure and the integration of multiple functional modules make equipment maintenance and troubleshooting difficult and expensive. Insufficient adaptability: Different types of laboratories have different requirements for environmental control, but existing systems often lack flexibility and are difficult to adapt to diverse experimental needs. Low intelligence: Most existing systems lack intelligent control and remote monitoring functions, and cannot achieve automated management and real-time data analysis. Low space utilization efficiency: Traditional direct expansion machine systems are large in size, and it is difficult to install and arrange them in laboratories with limited space. Insufficient environmental friendliness: Many existing systems still use refrigerants that are harmful to the environment and do not meet increasingly stringent environmental protection requirements. Limited dehumidification capacity: In high humidity environments, the dehumidification capacity of existing systems is often insufficient, making it difficult to meet certain experimental requirements that are extremely sensitive to humidity. Poor temperature and humidity uniformity: In large laboratories or environments with complex layouts, existing systems find it difficult to ensure the uniformity of temperature and humidity in the entire space, which may lead to local differences in experimental conditions.

[0006] In view of the above problems, it is urgent to develop a new, more efficient, precise, intelligent and environmentally friendly laboratory purification constant temperature and humidity direct expansion machine system. This system should be able to provide more precise temperature and humidity control, more comprehensive air purification, higher energy efficiency, and at the same time have the ability to intelligently manage and flexibly adapt to different experimental needs.

[0007] Therefore, there is an urgent need for a purified constant temperature and humidity direct expansion machine for laboratory use. Summary of the invention

[0008] The present invention proposes a constant temperature and humidity direct expansion machine for laboratory purification, which solves the following technical problems: improving the temperature and humidity control accuracy, improving the air purification effect, enhancing the system response speed, optimizing the space utilization, reducing noise and vibration, improving energy efficiency, achieving more uniform temperature and humidity distribution, and providing flexible maintenance and adjustment capabilities. Through innovative structural design and component configuration, the shortcomings of traditional systems in performance, efficiency and adaptability are overcome.

[0009] The technical solution of the present invention is implemented as follows: a purification constant temperature and humidity direct expansion machine for laboratories, comprising a humidity control section, a temperature control section and a fan section arranged in sequence from left to right, an air outlet is opened on the upper end surface of the fan section, a motor and a fan are built in the fan section, a fan wheel is arranged in the fan, the fan wheel is connected to the motor through a belt, the motor and the fan are both arranged on a base, the base is connected to the inner wall of the fan section box through a vibration-damping spring, the fan is connected to the air outlet, an electric heating plate and a refrigeration plate as well as a refrigeration cabin are arranged in the pipeline in the temperature control section The electric heating plate and the refrigeration plate are on the same horizontal plane, a gap is left between the electric heating plate and the refrigeration plate, the refrigeration plate is connected to the refrigeration cabin, the pipeline of the temperature control section is connected to the humidity control section and the fan section, the pipe diameter cross-sectional area of ​​the pipe connecting the humidity control section and the fan section is larger than the pipe diameter cross-sectional area in the middle of the pipe, an inspection door is provided on the front end face of the humidity control section, a dry steam humidifier is built in the humidity control section, an air inlet is provided on the side of the humidity control section away from the temperature control section, and an auxiliary air inlet is provided on the upper end face of the humidity control section away from the temperature control section.

[0010] This laboratory purification constant temperature and humidity direct expansion machine design has several significant differences compared to existing technologies. The design adopts a three-stage structure, consisting of a humidity control section, a temperature control section, and a fan section. This segmented design allows each functional module to operate more independently and efficiently, and is also easy to maintain and debug.

[0011] The design of the fan section reflects the emphasis on noise reduction and vibration reduction. By installing the motor and fan on the base and connecting the box with a vibration-damping spring, the vibration and noise of the equipment during operation are effectively reduced. This design not only improves the stability of the equipment, but also improves the working environment of the laboratory. Thirdly, the parallel setting of the electric heating plate and the cooling plate in the temperature control section, as well as the connection with the refrigeration chamber, demonstrates the refined control of temperature regulation. This design enables fast and accurate temperature regulation and meets the strict requirements of the laboratory for temperature control. The innovation of the pipeline design is also worth noting. The cross-sectional area of ​​the pipe connecting the humidity control section and the fan section is larger than that of the middle section. This variable diameter design helps to optimize the airflow distribution and improve the overall efficiency of the system. The design of the humidity control section also shows many considerations, including the front inspection door for easy maintenance, the use of dry steam humidifiers to improve the efficiency and cleanliness of humidification, and the setting of the air inlet and auxiliary air inlet increases the flexibility and adjustment ability of the system.

[0012] In general, this design provides a more efficient, accurate and easy-to-maintain laboratory environment control solution through innovations in structural optimization, noise control, precise temperature and humidity adjustment, airflow optimization, etc. It not only meets the strict requirements of the laboratory for temperature and humidity control, but also takes into account the actual needs of equipment operation stability, noise control and maintenance convenience, representing an important trend of laboratory environment control equipment developing towards a smarter and more humane direction.

[0013] As a preferred embodiment, a resistive sound-absorbing plate is arranged at the bottom of the humidity control section, the temperature control section and the fan section. The resistive sound-absorbing plate adopts a galvanized plate as a frame. The interior of the resistive sound-absorbing plate is a cavity filled with a lining sound-absorbing material, and the lining sound-absorbing material adopts a mesh panel binding surface.

[0014] As a preferred embodiment, the outer wall and inner cavity of the humidity control section are respectively provided with temperature detectors, wherein the temperature detector arranged on the outer wall of the humidity control section is arranged at the inlet position of the air inlet, and the temperature detector arranged in the inner cavity of the humidity control section is arranged on one side of the dry steam humidifier.

[0015] As a preferred embodiment, the dry-bulb temperature of the temperature detector arranged on the outer wall of the humidity control section is set at 35°C, the dry-bulb temperature of the temperature detector arranged in the inner cavity of the humidity control section is set at 23°C, and the wet-bulb temperature is set at 17°C. When the temperature detector does not reach the set temperature, the humidity control section and the temperature control section are started to control the temperature and humidity.

[0016] As a preferred embodiment, the dry steam humidifier adopts isothermal humidification for humidification. A water storage pressurization cabin is provided in the dry steam humidifier. 0.2MPa dry steam is exported through the water storage pressurization cabin for humidification, and the humidity is controlled within 40% to 65% ± 10% in the humidity control section.

[0017] As a preferred embodiment, the electric heating plate adopts stainless steel spiral fins or PTC heating elements, and the electric heating plate is installed on a galvanized frame. The electric heating plate is connected to the main control cabinet outside the temperature control section through a wire, and is powered by the power supply in the main control cabinet. The power supply voltage is set to 220V.

[0018] After adopting the above technical solution, the beneficial effects of the present invention are:

[0019] Its three-stage structure and specialized temperature and humidity control design achieve efficient and precise environmental regulation to meet strict experimental requirements. The base and damping spring design of the fan section effectively reduce noise and vibration, significantly improving the laboratory working environment. The innovative design of the temperature control section, including the parallel setting of the electric heating plate and the cooling plate and the connection with the refrigeration chamber, achieves fast and precise temperature regulation. The pipe diameter reduction design optimizes the airflow distribution and improves the overall efficiency of the system. The inspection door design of the humidity control section facilitates maintenance, the dry steam humidifier improves the humidification efficiency and cleanliness, and the setting of the main and auxiliary air inlets increases the flexibility of the system. These designs not only improve energy utilization efficiency and reduce energy waste, but also enhance the adaptability of the equipment to meet the needs of different types of laboratories. By accurately controlling the laboratory environment, the design helps to improve the accuracy and repeatability of experimental results. In general, this innovative design provides a more stable, precise and comfortable working environment for the laboratory, significantly improves the experimental quality and work efficiency, and represents an important trend in the development of laboratory environmental control equipment towards a smarter and more humane direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

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

[0022] In the figure, 1-humidity control section, 11-inspection door, 12-dry steam humidifier, 13-air inlet, 14-auxiliary air inlet; 2-temperature control section, 21-electric heating plate, 22-refrigeration plate, 23-refrigeration chamber, 3-fan section, 31-air outlet, 32-motor, 33-fan, 4-resistive silencer. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0024] Example:

[0025] like Figure 1 As shown, a purification constant temperature and humidity direct expansion machine for laboratories includes a humidity control section 1, a temperature control section 2 and a fan section 3, which are arranged from left to right in sequence. An air outlet 31 is opened on the upper end surface of the fan section 3, and a motor 32 and a fan 33 are built in the fan section 3. A wind wheel is arranged in the fan 33, and the wind wheel is connected to the motor 32 through a belt. The motor 32 and the fan 33 are both arranged on a base 34, and the base 34 is connected to the inner wall of the fan section 3 box through a vibration-damping spring. The fan 33 is connected to the air outlet 31, and an electric heating plate 21, a cooling plate 22 and a cooling chamber 23 are arranged in the pipeline in the temperature control section 2. The heating plate 21 and the refrigeration plate 22 are on the same horizontal plane, and a gap is left between the electric heating plate 21 and the refrigeration plate 22. The refrigeration plate 22 is connected to the refrigeration cabin 23. The pipeline of the temperature control section 2 is connected to the humidity control section 1 and the fan section 3. The cross-sectional area of ​​the pipe diameter connecting the humidity control section 1 and the fan section 3 is larger than the cross-sectional area of ​​the pipe diameter in the middle of the pipeline. An inspection door 11 is provided on the front end face of the humidity control section 1. A dry steam humidifier 12 is built in the humidity control section 1. An air inlet 13 is provided on the side of the humidity control section 1 away from the temperature control section 2, and an auxiliary air inlet 14 is provided on the upper end face of the humidity control section 1 away from the temperature control section 2.

[0026] The working principle and operation steps of this laboratory purification constant temperature and humidity direct expansion machine are as follows:

[0027] Air enters the system from the air inlet 13 and the auxiliary air inlet 14 of the humidity control section 1. The incoming air first passes through the humidity control section 1, and the dry steam humidifier 12 humidifies the air as needed. This design allows precise control of air humidity, while the dry steam humidification method ensures the cleanliness of the humidification process. The air then enters the temperature control section 2, where the electric heating plate 21 and the cooling plate 22 work together to accurately adjust the air temperature. The electric heating plate 21 and the cooling plate 22 are on the same horizontal plane with a gap between them. This design allows for rapid switching between heating and cooling modes, improving the flexibility and efficiency of temperature regulation.

[0028] The connection between the refrigeration plate 22 and the refrigeration chamber 23 further enhances the refrigeration capacity. The pipeline design of the temperature control section 2 is also very clever. The cross-sectional area of ​​the pipe diameter connecting the humidity control section 1 and the fan section 3 is larger than the middle part. This variable diameter design helps to optimize the airflow distribution, reduce airflow resistance, and improve system efficiency. The temperature-regulated air finally enters the fan section 3, and the fan 33 driven by the motor 32 sends the treated air out through the air outlet 31. The wind wheel in the fan 33 is connected to the motor 32 through a belt. This transmission method is conducive to reducing noise and improving efficiency. The motor 32 and the fan 33 are installed on the base 34, and the base 34 is connected to the inner wall of the box through a vibration-damping spring. This design effectively reduces the vibration and noise during the operation of the equipment and improves the stability and comfort of the equipment.

[0029] The operation steps of the whole system include: starting the system, setting the required temperature and humidity parameters, and the system automatically adjusts the humidifier 12 of the humidity control section 1, the electric heating plate 21 and the cooling plate 22 of the temperature control section 2, and the speed of the fan 33 of the fan section 3 to achieve and maintain the set environmental parameters. The inspection door 11 on the front face of the humidity control section 1 is convenient for daily maintenance and overhaul. The reason for this design is mainly based on the following considerations: the three-stage design (humidity control, temperature control, fan) enables each functional module to operate independently and efficiently, which is convenient for precise control and maintenance. The segmented control of humidity and temperature allows more precise environmental parameter adjustment to meet the strict requirements of the laboratory. The vibration reduction design of the fan section greatly reduces the noise and vibration during the operation of the equipment and improves the laboratory working environment. The variable diameter design of the pipeline and the transmission mode of the fan are both aimed at improving the efficiency of the system and reducing energy consumption. The setting of the auxiliary air inlet 14 increases the flexibility of the system, and the fresh air volume can be adjusted as needed.

[0030] In general, this design provides an efficient, precise, easy-to-maintain and adaptable laboratory environmental control solution through innovations in structural optimization, noise control, precise temperature and humidity adjustment, airflow optimization, etc., which can meet the high standards of environmental control in modern laboratories.

[0031] A resistive silencer 4 is arranged at the bottom of the humidity control section 1, the temperature control section 2 and the fan section 3. The resistive silencer 4 uses a galvanized plate as a frame. The resistive silencer 4 has a cavity inside, and the cavity is filled with a lining sound-absorbing material. The lining sound-absorbing material uses a mesh panel as a surface.

[0032] Placing resistive silencers at the bottom of the humidity control section, temperature control section, and fan section reflects the comprehensive noise control concept. Traditional designs often only perform silencers at major noise sources such as the fan section, while ignoring the noise contribution of other areas. This comprehensive coverage approach can more effectively reduce the noise level of the entire system and provide a better working environment. The use of galvanized sheet metal as the frame is an important material selection innovation. Galvanized sheet metal not only has good strength and durability, but also has excellent corrosion resistance, which is especially important for equipment used for a long time in humid or corrosive environments. This choice extends the service life of the silencer panel and reduces maintenance requirements.

[0033] The resistive sound-absorbing board adopts a cavity design inside and is filled with lining sound-absorbing materials. This structural design significantly improves the sound-absorbing effect. The cavity structure can effectively absorb low-frequency noise, while the lining sound-absorbing material can handle medium and high-frequency noise. This combination can achieve wide-band noise control. Compared with the traditional single material or structural design, this composite structure can more comprehensively deal with noise problems of various frequencies. The design of the lining sound-absorbing material with a mesh binding surface is another innovation. The mesh binding surface can not only protect the internal sound-absorbing material to prevent it from falling off or being carried away by the airflow, but also increase the contact area between the sound wave and the sound-absorbing material, further improving the sound absorption effect.

[0034] The mesh design is easy to clean and maintain, which is especially important in environments that need to be kept clean. This design also takes into account the overall performance of the system. The setting of the resistive muffler will not only not affect the normal operation of the equipment, but may also improve the stability and service life of the equipment by reducing vibration. This design shows good adaptability and customizability. By adjusting the cavity size, the type and thickness of the sound absorbing material, and the design of the mesh, it can be optimized for noise of different frequencies to meet the specific needs of different application scenarios.

[0035] This resistive muffler design provides an efficient, durable and flexible noise control solution through comprehensive coverage, material innovation, composite structure and customizability. It not only effectively reduces equipment operating noise and improves the working environment, but also has long-term reliability and adaptability, representing an important trend in the development of industrial equipment noise control towards a smarter and more comprehensive direction.

[0036] The outer wall and inner cavity of the humidity control section 1 are respectively provided with temperature detectors, wherein the temperature detector provided on the outer wall of the humidity control section 1 is provided at the entrance of the air inlet 13, and the temperature detector provided in the inner cavity of the humidity control section 1 is provided on one side of the dry steam humidifier 12. The temperature detectors are respectively provided on the outer wall and inner cavity of the humidity control section, which reflects the concept of comprehensive and precise temperature monitoring.

[0037] Traditional designs usually only measure temperature at a single location, which cannot fully reflect the temperature distribution of the entire humidity control section. This dual detection solution can monitor both the external ambient temperature and the internal operating temperature, providing more comprehensive temperature data, which helps to more accurately control the humidity adjustment process. Placing the outer wall temperature detector at the inlet entrance is a strategic arrangement. This location selection can monitor the air temperature entering the system in real time, providing important initial parameters for subsequent humidity adjustment.

[0038] This data is critical for predicting and adjusting system performance, and can help the system respond to external environmental changes more quickly and accurately. Placing a temperature detector on one side of the dry steam humidifier in the inner cavity is another innovation. This arrangement can directly monitor temperature changes during the humidification process, providing real-time data for precise control of humidification volume and humidification effect. Traditional systems ignore the impact of the humidification process on temperature, and this design can capture temperature fluctuations during the humidification process, thereby achieving more precise humidity control.

[0039] This dual temperature detection design provides more data support for the system, which is conducive to the implementation of smarter control strategies. By comparing the temperature difference between inside and outside, the system can more accurately estimate the heat exchange efficiency, predict possible condensation problems, or optimize energy use. This data-driven design is difficult to achieve in traditional single-point temperature detection systems. This design shows good adaptability and scalability. By analyzing the correlation and change trend of internal and external temperatures, the system can self-learn and optimize control parameters to adapt to different working conditions and environmental changes. At the same time, this multi-point temperature detection provides a basis for the integration of more complex control algorithms in the future to achieve smarter and more efficient humidity control.

[0040] This innovative setting scheme of temperature detectors builds a more comprehensive and accurate temperature monitoring system through strategic layout and multi-point monitoring. It not only improves the accuracy and response speed of humidity control, but also provides a data basis for realizing smarter and more efficient system control, representing an important trend of industrial environmental control systems towards more refined and intelligent development.

[0041] The dry-bulb temperature of the temperature detector installed on the outer wall of humidity control section 1 is set at 35°C, the dry-bulb temperature of the temperature detector installed in the inner cavity of humidity control section 1 is set at 23°C, and the wet-bulb temperature is set at 17°C. When the temperature detector does not reach the set temperature, humidity control section 1 and temperature control section 2 are started to regulate temperature and humidity. The control targets of external ambient temperature and internal working temperature are clearly distinguished. This differentiated setting reflects a more sophisticated control concept. Traditional systems usually use a single temperature set point, ignoring the differences between internal and external environments. Setting the dry-bulb temperature of the outer wall temperature detector to 35°C reflects the consideration of adaptability to the external high-temperature environment, which helps the system maintain stable operation under various climatic conditions.

[0042] The internal temperature detector sets both the dry bulb temperature (23°C) and the wet bulb temperature (17°C). This dual parameter setting is an important innovation. Traditional systems often only focus on dry bulb temperature, but ignore the impact of humidity on comfort and process. By controlling both dry bulb and wet bulb temperatures, the system can more accurately manage the temperature and humidity of the air, providing better support for precision process or comfortable environment control.

[0043] The setting of 23℃ dry bulb temperature and 17℃ wet bulb temperature reflects the comprehensive consideration of comfort and energy saving. This setting can not only ensure a comfortable working environment, but also avoid overcooling or heating, potentially saving energy. When the temperature detector does not reach the set temperature, the system automatically starts the humidity control section and the temperature control section for regulation, reflecting the control concept of intelligence and automation.

[0044] This automatic trigger mechanism can quickly respond to environmental changes and maintain a stable internal environment without human intervention. This not only improves the system's response speed, but also reduces the possibility of human operating errors. This design demonstrates the flexibility and adaptability of the system. By adjusting different temperature set points, the system can easily adapt to different application scenarios and seasonal changes.

[0045] For example, a lower internal temperature setting may be required in the summer, while the set point may need to be increased in the winter to save energy. This flexibility is difficult to achieve in traditional fixed parameter systems. This temperature and humidity control solution builds a more precise, efficient and flexible environmental control system through innovative designs such as differentiated temperature settings, dual control of dry and wet bulb temperatures, and intelligent automatic start-up mechanisms. It not only better meets the needs of precision processes or comfortable environments, but also improves energy utilization efficiency, representing an important trend in the development of industrial and building environmental control systems towards a smarter and more energy-efficient direction. This design provides new possibilities for achieving high-precision and high-efficiency temperature and humidity control, and has broad application prospects in various fields that require precise environmental control, such as precision manufacturing, healthcare, data centers, etc.

[0046] The dry steam humidifier 12 adopts isothermal humidification to humidify, and a water storage and pressure chamber is provided in the dry steam humidifier 12, through which 0.2MPa dry steam is exported for humidification, and the humidity is controlled within 40% to 65% ± 10% in the humidity control section 1. Adopting isothermal humidification is an important technical choice.

[0047] Traditional humidification systems often use cold mist or ultrasonic humidification, which may affect the ambient temperature or produce water droplets. Isothermal humidification can increase humidity without significantly changing the air temperature, which is particularly important in environments where temperature and humidity need to be precisely controlled. Setting up a water storage pressurized cabin and using 0.2MPa dry steam for humidification is a significant innovation. The use of this high-pressure dry steam can provide faster and more uniform humidification.

[0048] Traditional systems usually use low-pressure or atmospheric steam, which makes it difficult to achieve fast and precise humidity regulation. The 0.2MPa pressure setting ensures sufficient humidification efficiency without causing excessive pressure on the system, reflecting the balance and safety considerations of the design. Controlling the humidity within the range of 40% to 65% ± 10% shows the high-precision control capability of the system. This range can meet the needs of most industrial and living environments, while leaving a certain amount of room for adjustment, reflecting the flexibility and adaptability of the design. Traditional systems often find it difficult to achieve such precise humidity control, especially under rapidly changing environmental conditions.

[0049] This design is more energy efficient. Dry steam humidification does not require additional heating or cooling processes, and directly uses the latent heat of steam for humidification, which may be more energy-efficient than other humidification methods. The precise humidity control range also helps to avoid over-humidification or dehumidification, further saving energy. This design demonstrates good hygiene and reliability. Dry steam humidification reduces the risk of breeding bacteria and microorganisms and is suitable for environments with high air quality requirements.

[0050] The design of the water storage pressurized cabin also improves the stability and continuous operation capability of the system. This dry steam humidifier design builds an efficient, precise and hygienic humidification system through innovative features such as isothermal humidification, use of high-pressure dry steam, and precise humidity control. It not only better meets the needs of precision environmental control, but also improves energy efficiency and system reliability, representing an important trend in the development of industrial and building humidity control systems towards smarter, more efficient and healthier directions. This design provides new possibilities for achieving high-quality air conditioning and has broad application prospects in various fields that require precise humidity control, such as semiconductor manufacturing, medical facilities, museums, etc.

[0051] The electric heating plate 21 adopts stainless steel spiral fins or PTC heating elements. The electric heating plate 21 is installed on a galvanized frame. The electric heating plate 21 is connected to the main control cabinet outside the temperature control section 2 through a wire and is powered by a power supply in the main control cabinet. The power supply voltage is set to 220V.

[0052] The choice of stainless steel spiral fins or PTC heating elements reflects the flexibility and adaptability of the design. Stainless steel spiral fins have excellent thermal conductivity and corrosion resistance, while PTC (positive temperature coefficient) heating elements have self-temperature regulation capabilities and higher safety. This dual-option design allows the most suitable heating method to be selected according to the specific application scenario, which is difficult to achieve in traditional single heating element designs. Secondly, mounting the electric heating plate on a galvanized frame is an important structural innovation. The galvanized frame not only provides good support, but also has excellent corrosion resistance, which is especially important for equipment used for a long time in humid or corrosive environments.

[0053] This design extends the service life of the heating system and reduces maintenance requirements. The design that the electric heating plate is connected to the main control cabinet outside the temperature control section through wires reflects the consideration of system integration and safety. Separating the control unit from the heating unit not only facilitates maintenance and replacement, but also improves the safety of the entire system and reduces the impact of high temperature on the control components. This separation design is not common in traditional integrated heating systems. The power supply in the main control cabinet and the power supply voltage set to 220V show the standardization and universality of the design. 220V is a common industrial and household voltage standard. This choice makes the system easy to install and adapt without the need for special power supply equipment. At the same time, the centralized power supply design improves the efficiency and controllability of energy use. This design shows good scalability and intelligent potential. Through the centralized management of the main control cabinet, the system can integrate more complex control algorithms such as PID control, fuzzy logic or even machine learning algorithms to achieve more accurate and intelligent temperature control. This provides convenience for future system upgrades and functional expansion.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A constant temperature and humidity direct expansion machine for laboratory purification, characterized in that: The invention comprises a humidity control section (1), a temperature control section (2) and a fan section (3) which are arranged in sequence from left to right. The upper end surface of the fan section (3) is provided with an air outlet (31). The fan section (3) is provided with a motor (32) and a fan (33). The fan (33) is provided with a wind wheel which is connected to the motor (32) via a belt. The motor (32) and the fan (33) are both arranged on a base (34). The base (34) is connected to the inner wall of the fan section (3) via a vibration-damping spring. The fan (33) is connected to the air outlet (31). An electric heating plate (21), a cooling plate (22) and a cooling chamber (23) are arranged in the pipe in the temperature control section (2). The electric heating plate (21) and the cooling plate (22) are connected to each other via a vibration-damping spring. (22) are on the same horizontal plane, a gap is left between the electric heating plate (21) and the refrigeration plate (22), the refrigeration plate (22) is connected to the refrigeration chamber (23), the pipeline of the temperature control section (2) is connected to the humidity control section (1) and the fan section (3), the pipe diameter cross-sectional area of ​​the pipe connecting the humidity control section (1) and the fan section (3) is larger than the pipe diameter cross-sectional area in the middle of the pipe, the front end face of the humidity control section (1) is provided with an inspection door (11), the humidity control section (1) is equipped with a dry steam humidifier (12), the humidity control section (1) is provided with an air inlet (13) on the side away from the temperature control section (2), and the upper end face of the humidity control section (1) is provided with an auxiliary air inlet (14) on the side away from the temperature control section (2).

2. A constant temperature and humidity direct expansion machine for laboratory purification as claimed in claim 1, characterized in that: A resistive sound-absorbing plate (4) is arranged at the bottom of the humidity control section (1), the temperature control section (2) and the fan section (3); the resistive sound-absorbing plate (4) uses a galvanized plate as a frame; the resistive sound-absorbing plate (4) has a cavity inside, and the cavity is filled with a lining sound-absorbing material; the lining sound-absorbing material uses a mesh board binding surface.

3. A purification constant temperature and humidity direct expansion machine for laboratory use as claimed in claim 1, characterized in that: The outer wall and inner cavity of the humidity control section (1) are respectively provided with temperature detectors, wherein the temperature detector provided on the outer wall of the humidity control section (1) is arranged at the entrance position of the air inlet (13), and the temperature detector provided in the inner cavity of the humidity control section (1) is arranged on one side of the dry steam humidifier (12).

4. A purification constant temperature and humidity direct expansion machine for laboratory use as claimed in claim 3, characterized in that: The dry-bulb temperature of the temperature detector arranged on the outer wall of the humidity control section (1) is set at 35°C, the dry-bulb temperature of the temperature detector arranged in the inner cavity of the humidity control section (1) is set at 23°C, and the wet-bulb temperature is set at 17°C. When the temperature detector does not reach the set temperature, the humidity control section (1) and the temperature control section (2) are started to control the temperature and humidity.

5. A constant temperature and humidity direct expansion machine for laboratory purification as claimed in claim 1, characterized in that: The dry steam humidifier (12) uses an isothermal humidification method for humidification. A water storage and pressure chamber is provided in the dry steam humidifier (12). 0.2MPa dry steam is exported through the water storage and pressure chamber for humidification, and the humidity is controlled within 40% to 65% ± 10% in the humidity control section (1).

6. A constant temperature and humidity direct expansion machine for laboratory purification as claimed in claim 1, characterized in that: The electric heating plate (21) uses a stainless steel spiral fin or a PTC heating element. The electric heating plate (21) is installed on a galvanized frame. The electric heating plate (21) is connected to a main control cabinet outside the temperature control section (2) through a wire and is powered by a power supply in the main control cabinet. The power supply voltage is set to 220V.

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