Dew point temperature controlled semiconductor dehumidifier
By introducing dew point temperature control into the semiconductor dehumidifier, combining the temperature and humidity sensor and PWM control module, the condensation problem caused by neglecting temperature factors in the existing technology is solved, and more refined humidity control and power management are achieved, and dehumidification efficiency is improved. and security.
Patent Information
- Application Number
- CN202420610330.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-03-27
AI Technical Summary
Existing semiconductor dehumidifiers cannot effectively avoid the generation of condensation in electrical cabinets. They rely solely on humidity control and ignore temperature factors, resulting in condensation that may still occur in high-humidity and high-temperature environments, which may lead to equipment failure.
A semiconductor dehumidifier with dew point temperature control is designed to detect environmental conditions through a temperature and humidity sensor, calculate dew point temperature, and determine whether dehumidification is performed based on the current temperature, including the main control board, CPU, power control board, semiconductor refrigeration module, and temperature Sensor and PWM control module realize dynamic control of dew point and temperature.
It effectively avoids the generation of condensation in the cabinet, reduces power consumption, improves dehumidification efficiency, and prevents the cold-end radiator from freezing, ensuring the normal operation of dehumidification work.
Smart Images
Figure CN222189757U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of dehumidification devices, and specifically designs a semiconductor dehumidifier with dew point temperature control. Background Art
[0002] The refined management, scientific and technological development and technological improvement of the power system have put forward higher requirements for equipment management. Usually under high humidity conditions, it is easy to cause rust on contacts, increased impedance, heat under large current, fire, explosion and other phenomena. The rust on mechanical mechanisms will lead to failure of operation and thus accidents. Taking the electrical cabinet as an example, when the temperature and humidity in the cabinet reach a certain level, condensation is likely to occur, which in turn leads to accidents. The temperature when condensation occurs is the dew point, so in order to avoid condensation, the cabinet needs to be dehumidified.
[0003] Existing semiconductor cabinet dehumidifiers are usually controlled by humidity. When the humidity is higher than the set value, the semiconductor cabinet dehumidifier starts dehumidification. When it is lower than the set value, the semiconductor cabinet dehumidifier stops dehumidification. However, the generation of condensation in the cabinet is related to both humidity and temperature. For example, when the humidity is 56% and the temperature is 18°C, condensation will occur when the temperature is lower than about 9.1°C. When the humidity is 80% and the temperature is 30°C, condensation will occur when the temperature is about 28°C. Therefore, the control of condensation in the cabinet cannot be based solely on the humidity value of the surrounding environment. Instead, it is necessary to obtain the dew point based on the humidity and temperature of the environment, and compare the dew point with the temperature to choose whether to dehumidify. Therefore, a method is needed to control the semiconductor dehumidifier based on the dew point and temperature conditions based on the detection of humidity. The utility model solves this technical problem. Utility Model Content
[0004] The utility model provides a semiconductor dehumidifier with dew point temperature control, which can calculate the dew point temperature according to the humidity and temperature of the surrounding environment, and then combine the current ambient temperature with the dew point temperature to determine whether to perform dehumidification work, thereby better avoiding condensation in the cabinet.
[0005] A semiconductor dehumidifier with dew point temperature control comprises a control mechanism, a dehumidification mechanism connected to the control mechanism, and a temperature and humidity sensor connected to the control mechanism. The temperature and humidity sensor is used to detect the temperature and humidity of the environment, and the control mechanism is used to control and calculate the dew point temperature.
[0006] Furthermore, the control mechanism includes a main control board, a CPU connected to the main control board, and a power control board electrically connected to the main control board, and the dehumidification mechanism and the temperature and humidity sensor are respectively connected to the main control board.
[0007] Furthermore, the dehumidification mechanism includes a PWM control module connected to the main control board and a semiconductor refrigeration module connected to the PWM control module.
[0008] Furthermore, a temperature sensor is connected to the main control board, and the temperature sensor is used to detect the temperature of the cold end radiator of the semiconductor refrigeration module.
[0009] Furthermore, a relay for controlling output is connected to the power control board.
[0010] Furthermore, a heat dissipation fan is connected to the main control board to dissipate heat inside the device.
[0011] Furthermore, the main control board is connected with a communication module for data transmission and communication.
[0012] The technical effects of the utility model are as follows:
[0013] (1) This device detects the temperature and humidity of the surrounding environment through a temperature and humidity sensor, and calculates the temperature and humidity of the surrounding environment through the CPU to obtain the dew point temperature at that time. When the humidity exceeds the set value or the ambient temperature is lower than the dew point temperature, the CPU will control the refrigeration module to perform dehumidification. Dehumidification will only be stopped when both conditions are not met at the same time, thereby better dehumidifying the interior of the cabinet;
[0014] (2) The temperature sensor detects the temperature of the cold end radiator of the semiconductor refrigeration module. When the ambient temperature is low and the temperature of the cold end radiator is lower than the dew point temperature, the power of the semiconductor refrigeration module can be reduced through the control of the PWM control module, thereby reducing the power of the device while achieving dehumidification and reducing power consumption;
[0015] (3) When the ambient temperature is low and the dew point temperature is above 0°C, the power of the semiconductor refrigeration module can be increased through the control of the PWM control module, thereby increasing the temperature of the cold-end radiator to prevent the cold-end radiator from freezing due to low temperature and affecting the dehumidification work. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of the utility model.
[0017] Figure 2 It is the work flow chart of the utility model.
[0018] Among them, the figure markings are: 1. main control board; 2. power control board; 3. semiconductor refrigeration module; 4. temperature sensor; 5. cooling fan; 6. communication module; 7. temperature and humidity sensor; 8. relay; 9. CPU; 10. PWM control module. DETAILED DESCRIPTION
[0019] The technical solution of the present utility model will be clearly and completely described below in conjunction with specific embodiments and drawings.
[0020] See also Figure 1 , Figure 2 A semiconductor dehumidifier with dew point temperature control includes a control mechanism, a dehumidification mechanism connected to the control mechanism, and a temperature and humidity sensor 7 connected to the control mechanism. The temperature and humidity sensor 7 is used to detect the temperature and humidity of the environment, and the control mechanism is used to control and calculate the dew point temperature.
[0021] Furthermore, the control mechanism includes a main control board 1, a CPU 9 connected to the main control board 1, a power control board 2 electrically connected to the main control board 1, and a dehumidification mechanism and a temperature and humidity sensor 7 are respectively connected to the main control board 1.
[0022] Furthermore, the dehumidification mechanism includes a PWM control module 10 connected to the main control board 1 and a semiconductor refrigeration module 3 connected to the PWM control module 10. The semiconductor refrigeration module 3 in this embodiment is a refrigeration plate
[0023] Furthermore, a temperature sensor 4 is connected to the main control board 1 , and the temperature sensor 4 is used to detect the temperature of the cold end radiator of the semiconductor refrigeration module 3 .
[0024] Furthermore, the power control board 2 is connected to a relay 8 for controlling output.
[0025] Furthermore, a heat dissipation fan 5 is connected to the main control board 1 to dissipate heat inside the device.
[0026] Furthermore, the main control board 1 is connected with a communication module 6 for data transmission and communication. The communication module 6 in this embodiment is an RS485 communication module 6 .
[0027] The working principle of the utility model is as follows:
[0028] The temperature and humidity sensor 7 in the device detects the ambient temperature and humidity, and then the CPU 9 on the main control board 1 calculates the dew point temperature under this temperature and humidity, and compares the dew point temperature with the current temperature. When the current temperature is lower than the dew point temperature, the semiconductor refrigeration module 3 is controlled to turn on for dehumidification, or when the humidity value exceeds the set humidity value, dehumidification is also performed. When the ambient temperature is not lower than the dew point temperature and the humidity value does not exceed the set value, dehumidification is not performed;
[0029] When the ambient temperature is low and the temperature of the cold end radiator is lower than the dew point temperature, the power of the semiconductor refrigeration module 3 can be reduced through the control of the PWM control module 10, thereby reducing the power of the device while achieving dehumidification and reducing power consumption;
[0030] When the ambient temperature is low and the dew point temperature is above 0°C, the power of the semiconductor refrigeration module 3 can be increased through the control of the PWM control module 10, thereby increasing the temperature of the cold-end radiator to prevent the cold-end radiator from freezing due to the low temperature and affecting the dehumidification work. Since the temperature of the cold-end radiator is below zero, defrosting work must be performed to raise the temperature of the cold-end radiator to above 0°C. If defrosting work is not performed, the cold-end radiator will freeze, affecting the dehumidification efficiency. The dehumidification efficiency can be improved by this solution.
[0031] The above embodiments are only preferred embodiments of the present utility model. Those skilled in the art can obtain other embodiments from the above embodiments without creative work. Therefore, the present application protects not only the above embodiments, but also the scope consistent with the principles and features of the present application.
Claims
1. A semiconductor dehumidifier with dew point temperature control, It is characterized in that It comprises a control mechanism, a dehumidification mechanism connected to the control mechanism, and a temperature and humidity sensor (7) connected to the control mechanism, wherein the temperature and humidity sensor (7) is used to detect the temperature and humidity of the environment, and the control mechanism is capable of calculating the dew point temperature.
2. The semiconductor dehumidifier for dew point temperature control according to claim 1, It is characterized in that The control mechanism comprises a main control board (1), a CPU (9) connected to the main control board (1), and a power control board (2) electrically connected to the main control board (1); the dehumidification mechanism and the temperature and humidity sensor (7) are respectively connected to the main control board (1).
3. The semiconductor dehumidifier for dew point temperature control according to claim 2, It is characterized in that The dehumidification mechanism comprises a PWM control module (10) connected to the main control board (1), and a semiconductor refrigeration module (3) connected to the PWM control module (10).
4. The semiconductor dehumidifier for dew point temperature control according to claim 3, It is characterized in that The main control board (1) is connected to a temperature sensor (4), and the temperature sensor (4) is used to detect the temperature of the cold end radiator of the semiconductor refrigeration module (3).
5. The semiconductor dehumidifier for dew point temperature control according to claim 2, It is characterized in that The power control board (2) is connected to a relay (8) for controlling output.
6. The semiconductor dehumidifier for dew point temperature control according to claim 2, It is characterized in that The main control board (1) is connected to a heat dissipation fan (5).
7. The semiconductor dehumidifier for dew point temperature control according to claim 2, It is characterized in that The main control board (1) is connected to a communication module (6).