CN217441919U - Laboratory new trend temperature and humidity control economizer - Google Patents
Laboratory new trend temperature and humidity control economizer Download PDFInfo
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- CN217441919U CN217441919U CN202220107185.6U CN202220107185U CN217441919U CN 217441919 U CN217441919 U CN 217441919U CN 202220107185 U CN202220107185 U CN 202220107185U CN 217441919 U CN217441919 U CN 217441919U
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Abstract
The utility model discloses a laboratory new trend temperature and humidity control economizer, including first temperature and humidity sensor, second temperature and humidity sensor, calculation controller PLC, time relay and converter, first temperature and humidity sensor sets up in laboratory furred ceiling middle part, and second temperature and humidity sensor sets up in fresh air pipeline air intake department, first temperature and humidity sensor's receiving terminal is connected with calculation controller PLC output, second temperature and humidity sensor's receiving terminal is connected with calculation controller PLC output, time relay is connected with calculation controller PLC output equally; through setting up calculation controller PLC, first temperature and humidity sensor, second temperature and humidity sensor, the signal that makes the new trend business turn over can be collected, when the new trend humiture changes, through calculation controller PLC and converter, makes business turn over signal conversion for the addition and subtraction of frequency, and corresponding converter power changes, and is more energy-conserving until time relay's closure.
Description
Technical Field
The utility model relates to an energy-conserving technical field of constant temperature and humidity laboratory intelligent control equipment specifically is a laboratory new trend temperature and humidity control economizer.
Background
According to the 7.3.5 clause of the atmospheric environment verification regulation of the tobacco laboratory, JJG (tobacco) 21-2010 atmospheric environment verification regulation, the area of a fresh air supplement quantity verification measurement laboratory determines the number of working persons allowed in the laboratory according to the requirement that the per-capita effective use area is not less than 5 square, an anemometer is used for measuring the air flow rate at a fresh air port of the laboratory for 10 times, different representative positions such as the edge and the center of the fresh air port are selected during measurement, the average value of the 10 measured values is used as a final result, a steel tape measure is used for measuring the area value of the fresh air port, the total supplement quantity Ɩ of the fresh air in the laboratory is calculated by using the calculation formula given by the formula (1) according to the measured air flow rate at the fresh air port and the area value of the fresh air port, the unit is m/min, and the per-capita number of working persons allowed in the laboratory is calculated, the results should meet the requirements in 5.4. And for the tobacco tow laboratories, the per-capita fresh air replenishment quantity should not be less than 1.0 m/min, and for the flue gas analysis laboratories of the tobacco and tobacco product laboratories, the per-capita fresh air replenishment quantity should not be less than 2.0 m/min. The sample in the constant temperature and humidity laboratory needs to be tested in a constant sample within the measuring performance requirement of the verification rule 5, and the laboratory constant temperature and humidity control equipment needs to be continuously started to meet the use requirement. According to the regulation, the requirements of responding to the national call for switching off, power limiting, energy saving and emission reduction can increase energy consumption for a constant sample. Especially, the energy consumption will continue to increase according to the regulation in 5.4 when the air temperature is low in autumn and winter.
Second, measure performance requirements from specification 5, meet sample constancy and sample testing. In autumn and winter, the air temperature is low to meet the fresh air supplement amount, and the energy consumption can be greatly increased. Therefore, it is more important to design a laboratory new trend temperature and humidity control economizer.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a laboratory new trend temperature and humidity control economizer, after the discernment through the new trend humiture, reach the work of intelligence automatic control laboratory constant temperature and humidity control equipment refrigerator, realize automatic management and energy saving and consumption reduction's problem.
In order to achieve the above object, the utility model provides a following technical scheme: a laboratory fresh air temperature and humidity control energy-saving device comprises a first temperature and humidity sensor, a second temperature and humidity sensor, a calculation controller PLC, a time relay and a frequency converter, wherein the first temperature and humidity sensor is arranged in the middle of a laboratory ceiling, the second temperature and humidity sensor is arranged at an air inlet of a fresh air pipeline, a receiving end of the first temperature and humidity sensor is connected with an output end of the calculation controller PLC, the first temperature and humidity sensor is used for working signals of the indoor constant temperature and humidity sensor, a receiving end of the second temperature and humidity sensor is connected with an output end of the calculation controller PLC, the time relay is also connected with an output end of the calculation controller PLC, and the second temperature and humidity sensor is calculated by the calculation controller PLC and receives signals of the time relay; when the outside air temperature is lower than 14 ℃, the compressor is used for reducing the frequency to ensure that the temperature and humidity fluctuation range in the laboratory is within the atmospheric environment verification regulation until the frequency of the frequency converter is reduced to the set frequency, the frequency converter is stopped, and the refrigeration equipment is stopped.
Preferably, the receiving end of the frequency converter is connected with the time relay, the output end of the frequency converter is connected with the refrigeration fan contactor and the refrigerator contactor, and the refrigeration fan contactor and the refrigerator contactor are connected in parallel.
The utility model has the advantages that: the fresh air inlet and outlet signals are collected by arranging a calculation controller PLC, a first temperature and humidity sensor and a second temperature and humidity sensor; through setting up first temperature and humidity sensor, second temperature and humidity sensor, time relay, converter, when new trend humiture changes, through setting up calculation controller PLC and converter, make the business turn over signal conversion add and subtract of frequency, according to the change of new trend humiture, corresponding converter power changes, and is closed up to time relay, and is more energy-conserving.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the temperature and humidity control system comprises a first temperature and humidity sensor 1, a second temperature and humidity sensor 2, a calculation controller PLC3, a time relay 4, a frequency converter 5, a refrigeration fan contactor 6 and a refrigeration machine contactor 7.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a fresh air temperature and humidity control energy-saving device for a laboratory comprises a first temperature and humidity sensor 1 and a second temperature and humidity sensor 2, the device comprises a calculation controller PLC3, a time relay 4 and a frequency converter 5, wherein a first temperature and humidity sensor 1 is arranged in the middle of a suspended ceiling of a laboratory (not shown in the figure and known by workers in the field), a second temperature and humidity sensor 2 is arranged at an air inlet of a fresh air pipeline (not shown in the figure and known by workers in the field), a receiving end of the first temperature and humidity sensor 1 is connected with an output end of the calculation controller PLC3, the first temperature and humidity sensor is used for working signals of a constant temperature and humidity sensor in the laboratory, a receiving end of the second temperature and humidity sensor 2 is connected with an output end of the calculation controller PLC3, the time relay 4 is also connected with an output end of the calculation controller PLC3, and the second temperature and humidity sensor 2 is calculated by the calculation controller PLC3 and receives signals of the time relay 4; when the outside air temperature is lower than 14 ℃, the compressor is used for reducing the frequency to ensure that the temperature and humidity fluctuation range in the laboratory is within the atmospheric environment verification regulation until the frequency of the frequency converter is reduced to the set frequency, the frequency converter is stopped, and the refrigeration equipment is stopped.
The receiving end of the frequency converter 5 is connected with the time relay 4, the output end of the frequency converter 5 is connected with the refrigeration fan contactor 6 and the refrigerator contactor 7, and the refrigeration fan contactor 6 is connected with the refrigerator contactor 7 in parallel.
When the temperature of the fresh air sensed by the second temperature and humidity sensor 2 is higher than 14 ℃, the frequency converter 5 starts low frequency, the frequency of the frequency converter 5 gradually rises along with the temperature of the fresh air, and the frequency gradually rises until the frequency rises to a set frequency within a constant frequency, so that the constancy of the temperature and the humidity of the laboratory is ensured.
The calculation controller PLC3 receives signals of the second temperature and humidity sensor 2, the calculation controller PLC3 (a refrigerating machine PID) receives instructions of a fresh air temperature and humidity sensor (the fresh air temperature and humidity sensor is installed in a fresh air pipeline), the frequency of the frequency converter 5 is decreased when the temperature of fresh air is lower than 14 ℃, and the frequency is decreased along with the gradual decrease of the temperature of the fresh air until the time relay 4 is disconnected.
The power of the frequency converter 5 intelligently senses fresh air temperature and humidity signals according to the calculation controller PLC3, and correspondingly increases or decreases the frequency along with the increase and decrease of the fresh air temperature until the time relay 4 is closed or opened.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. The utility model provides a laboratory new trend temperature and humidity control economizer, includes first temperature and humidity sensor (1), second temperature and humidity sensor (2), calculation controller PLC (3), time relay (4) and converter (5), its characterized in that: the temperature and humidity control system is characterized in that a first temperature and humidity sensor (1) is arranged in the middle of a suspended ceiling of a laboratory, a second temperature and humidity sensor (2) is arranged at an air inlet of a fresh air pipeline, a receiving end of the first temperature and humidity sensor (1) is connected with an output end of a calculation controller PLC (3), the first temperature and humidity sensor is used for working signals of the constant temperature and humidity sensor in the laboratory, a receiving end of the second temperature and humidity sensor (2) is connected with an output end of the calculation controller PLC (3), a time relay (4) is also connected with an output end of the calculation controller PLC (3), and the second temperature and humidity sensor (2) is calculated by the calculation controller PLC (3) and receives signals of the time relay (4); when the outside air temperature is lower than 14 ℃, the compressor is used for reducing the frequency to ensure that the temperature and humidity fluctuation range in the laboratory is within the atmospheric environment verification regulation until the frequency of the frequency converter is reduced to the set frequency, the frequency converter is stopped, and the refrigeration equipment is stopped.
2. The laboratory fresh air temperature and humidity control energy-saving device according to claim 1, characterized in that: the receiving end of frequency converter (5) is connected with time relay (4), the output of frequency converter (5) is connected with refrigeration fan contactor (6) and refrigerator contactor (7), refrigeration fan contactor (6) and refrigerator contactor (7) are parallelly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220107185.6U CN217441919U (en) | 2022-01-15 | 2022-01-15 | Laboratory new trend temperature and humidity control economizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220107185.6U CN217441919U (en) | 2022-01-15 | 2022-01-15 | Laboratory new trend temperature and humidity control economizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217441919U true CN217441919U (en) | 2022-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220107185.6U Active CN217441919U (en) | 2022-01-15 | 2022-01-15 | Laboratory new trend temperature and humidity control economizer |
Country Status (1)
| Country | Link |
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| CN (1) | CN217441919U (en) |
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2022
- 2022-01-15 CN CN202220107185.6U patent/CN217441919U/en active Active
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| CP02 | Change in the address of a patent holder |
Address after: No. 104, 200 meters north of the west gate of Nanping Garden, No. 1888, Changjiang Road, Nancheng Street, Mudan District, Heze City, Shandong Province, 274000 Patentee after: Shandong Huilin Mechanical and Electrical Engineering Co.,Ltd. Address before: Room 27006, Building A2, Peony Mixc City, No. 666, Zhonghua West Road, Xicheng Street, Mudan District, Heze City, Shandong Province, 274000 Patentee before: Shandong Huilin Mechanical and Electrical Engineering Co.,Ltd. |