Laboratory constant temperature and humidity system

Abstract

The utility model relates to a temperature and humidity control system, in particular to a laboratory constant temperature and humidity system. A laboratory constant temperature and humidity system comprises a temperature control system and a humidity control system. The temperature control system comprises a temperature control cold and heat source air conditioning unit, a temperature control pipeline and a radiation radiator; the temperature control pipeline provides water of the temperature control cold and heat source air conditioning unit to the radiation radiator; the temperature control pipeline is provided with a first water pump for pumping water and a first constant-pressure expansion water tank for balancing pipeline pressure; the humidity control system comprises a humidity control cold and heat source air conditioning unit, a humidity control pipeline and a humidity control air conditioning unit; the humidity control pipeline provides water of the humidity control cold and heat source air conditioning unit for the humidity control air conditioning unit; the humidity control pipeline is provided with a second water pump used for pumping water and a second constant-pressure expansion water tank used for balancing pipeline pressure. The device has the advantages of being low in energy consumption and small in fluctuation degree.

Description

Technical Field

[0001] The utility model relates to a temperature and humidity control system, in particular to a constant temperature and humidity system for laboratories. Background Art

[0002] In the construction of high-precision laboratories, constant temperature and humidity are required. At the same time, more stringent requirements are put forward for the temperature and humidity fluctuation, air velocity, and uniformity. In the currently constructed high-precision laboratories, forced convection is mostly used for air supply and return, resulting in high control system difficulty, poor temperature and humidity uniformity, and relatively large temperature fluctuation.

[0003] At the same time, the existing systems in high-precision laboratories have high energy consumption and high enterprise operation costs, which are not conducive to energy conservation and emission reduction. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a constant temperature and humidity system for laboratories to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A constant temperature and humidity system for laboratories, comprising: a temperature control system and a humidity control system;

[0007] The temperature control system includes: a temperature control cold and heat source air-conditioning unit, a temperature control pipeline, and a radiation radiator; the temperature control pipeline supplies water from the temperature control cold and heat source air-conditioning unit to the radiation radiator; the temperature control pipeline is provided with a first water pump for pumping water and a first constant pressure expansion tank for balancing the pipeline pressure;

[0008] The humidity control system includes: a humidity control cold and heat source air-conditioning unit, a humidity control pipeline, and a humidity control air-conditioning unit; the humidity control pipeline supplies water from the humidity control cold and heat source air-conditioning unit to the humidity control air-conditioning unit; the humidity control pipeline is provided with a second water pump for pumping water and a second constant pressure expansion tank for balancing the pipeline pressure;

[0009] The radiation radiator includes: a heat insulation mounting plate, a radiation heat dissipation plate, and a radiation coil; the radiation coil is located between the heat insulation mounting plate and the radiation heat dissipation plate; the radiation coil conducts heat interaction with the interior of the laboratory through the radiation heat dissipation plate; the heat insulation mounting plate is located on the side of the radiation radiator facing the wall; the radiation heat dissipation plate is located on the side of the radiation radiator facing the interior; the radiation heat dissipation plate is fixed to the heat insulation mounting plate; a plurality of air guiding channels are formed between the radiation heat dissipation plate and the heat insulation mounting plate through partitions; the radiation heat dissipation plate is formed with a plurality of ventilation holes; the air outlet of the humidity control air-conditioning unit blows into the laboratory through the air guiding channels from the ventilation holes.

[0010] As a further solution of the utility model: a first heat exchanger is provided on the temperature control pipeline; a second heat exchanger is provided on the humidity control pipeline; the outdoor air inlet path of the humidity control air conditioning unit first passes through the first heat exchanger for heat exchange and then passes through the second heat exchanger for heat exchange again before entering the humidity control air conditioning unit.

[0011] As a further solution of the utility model: the first heat exchanger is located on the return water path of the temperature control cold and heat source air conditioning unit on the temperature control pipeline; the second heat exchanger is located on the return water path of the humidity control cold and heat source air conditioning unit on the humidity control pipeline.

[0012] As a further solution of the utility model: the temperature control cold and heat source air conditioning unit provides 15°C cold water in summer and 35°C hot water in winter; the humidity control cold and heat source air conditioning unit provides 7°C cold water in summer and 35°C hot water in winter.

[0013] As a further solution of the utility model: electronic descaling devices are provided on both the temperature control pipeline and the humidity control pipeline.

[0014] As a further solution of the utility model: automatic air vents are provided on both the temperature control pipeline and the humidity control pipeline.

[0015] As a further solution of the utility model: standby water pumps are provided on both the temperature control pipeline and the humidity control pipeline.

[0016] Compared with the prior art, the beneficial effects of the utility model are: low energy consumption and small fluctuation degree.

[0017] Compared with the forced convection temperature regulation method, the temperature control system does not require a fan with a higher total pressure for forced convection, reducing energy consumption. The temperature is regulated through a radiation radiator without additional power facilities, reducing energy consumption and noise.

[0018] The setting of the radiation heat dissipation plate utilizes the air flow of humidity regulation to accelerate temperature regulation, improving the efficiency of temperature regulation and quickly adjusting the temperature in the laboratory. During the humidity regulation process, the air flow first passes through the radiation heat dissipation plate, avoiding the influence of the temperature change of the air flow in humidity regulation on temperature regulation. Reducing the influence of temperature control accuracy in humidity regulation on temperature regulation, with a small fluctuation degree.

[0019] The outdoor air inlet path passes through the first heat exchanger and the second heat exchanger in sequence, preheating the air with the water in the temperature control system and the humidity control system, thereby reducing the load of the humidity control air conditioning unit and saving energy. The water temperature provided by the temperature control cold and heat source air conditioning unit in summer is higher than that provided by the humidity control cold and heat source air conditioning unit. By passing through the first heat exchanger first and then the second heat exchanger, the temperatures of the two systems are reasonably utilized, reducing the impact on the humidity control cold and heat source air conditioning unit, with a small impact on temperature and humidity regulation and a small fluctuation degree.

[0020] Other features and advantages of the present utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the temperature control system of a laboratory constant temperature and humidity system of the present utility model;

[0022] Figure 2 It is a schematic diagram of the humidity control system of a laboratory constant temperature and humidity system of the present utility model;

[0023] Figure 3 is Figure 2 a schematic diagram of the air inlet and outlet path of the humidity control system in

[0024] Figure 4 is Figure 1 a schematic diagram of the radiation radiator of the temperature control system in

[0025] List of reference numerals in the drawings: Temperature control system 10, Temperature control cold and heat source air-conditioning unit 11, Temperature control pipeline 12, First water pump 121, First constant pressure expansion tank 122, Radiation radiator 13, Heat insulation mounting plate 131, Radiation heat dissipation plate 132, Radiation coil 133, Air guide channel 134, First heat exchanger 14, Electronic scale inhibitor 15, Automatic exhaust valve 16, Standby water pump 17, Humidity control system 20, Humidity control cold and heat source air-conditioning unit 21, Humidity control pipeline 22, Second water pump 221, Second constant pressure expansion tank 222, Humidity control air-conditioning unit 23, Second heat exchanger 24. Specific Embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] As Figures 1 to 4 shown, a laboratory constant temperature and humidity system includes: a temperature control system 10 and a humidity control system 20.

[0028] The temperature control system 10 includes: a temperature control cold and heat source air-conditioning unit 11, a temperature control pipeline 12, and a radiation radiator 13. The temperature control pipeline 12 supplies water from the temperature control cold and heat source air-conditioning unit 11 to the radiation radiator 13. The temperature control pipeline 12 is provided with a first water pump 121 for pumping water and a first constant pressure expansion tank 122 for balancing the pipeline pressure.

[0029] The humidity control system 20 includes: a humidity control cold and heat source air conditioning unit 21, a humidity control pipeline 22, and a humidity control air conditioning unit 23. The humidity control pipeline 22 supplies water from the humidity control cold and heat source air conditioning unit 21 to the humidity control air conditioning unit 23. The humidity control pipeline 22 is provided with a second water pump 221 for pumping water and a second constant pressure expansion tank 222 for balancing the pipeline pressure.

[0030] The radiation radiator 13 includes: a heat insulation mounting plate 131, a radiation heat dissipation plate 132, and a radiation coil 133. The radiation coil 133 is located between the heat insulation mounting plate 131 and the radiation heat dissipation plate 132. The radiation coil 133 conducts heat interaction with the interior of the laboratory through the radiation heat dissipation plate 132. The heat insulation mounting plate 131 is located on the side of the radiation radiator 13 facing the wall. The radiation heat dissipation plate 132 is located on the side of the radiation radiator 13 facing the interior of the laboratory. The radiation heat dissipation plate 132 is fixed to the heat insulation mounting plate 131. A plurality of air guiding channels 134 are formed between the radiation heat dissipation plate 132 and the heat insulation mounting plate 131 through partition plates. The radiation heat dissipation plate 132 is formed with a plurality of ventilation holes. The air output from the humidity control air conditioning unit 23 blows into the laboratory through the ventilation holes via the air guiding channels 134.

[0031] The setting of the radiation heat dissipation plate 132 utilizes the air flow of humidity regulation to accelerate temperature regulation, improves the efficiency of temperature regulation, and quickly adjusts the temperature in the laboratory. During the humidity regulation process, the air flow first passes through the radiation heat dissipation plate 132, avoiding the influence of the change in air flow temperature during humidity regulation on temperature regulation. It reduces the influence of temperature control accuracy during humidity regulation on temperature regulation, and the fluctuation degree is small.

[0032] The temperature control pipeline 12 includes a water outlet path and a water return path. The water outlet path guides water from the temperature control cold and heat source air conditioning unit 11 to the radiation radiator 13. The water return path guides water from the radiation radiator 13 back to the temperature control cold and heat source air conditioning unit 11.

[0033] The humidity control pipeline 22 also includes a water outlet path and a water return path. The water outlet path guides water from the humidity control cold and heat source air conditioning unit 21 to the humidity control air conditioning unit 23. The water return path guides water from the humidity control air conditioning unit 23 back to the humidity control cold and heat source air conditioning unit 21.

[0034] As a specific implementation manner, a first heat exchanger 14 is provided on the temperature control pipeline 12. A second heat exchanger 24 is provided on the humidity control pipeline 22. The outdoor air inlet path of the humidity control air conditioning unit 23 first undergoes heat exchange through the first heat exchanger 14 and then undergoes heat exchange again through the second heat exchanger 24 before entering the humidity control air conditioning unit 23.

[0035] As a specific implementation manner, the first heat exchanger 14 is located on the return water path of the temperature control cold and heat source air conditioning unit 11 on the temperature control pipeline 12. The second heat exchanger 24 is located on the return water path of the humidity control cold and heat source air conditioning unit 21 on the humidity control pipeline 22.

[0036] The humidity control air conditioning unit 23 is provided with an outdoor air intake path, an indoor air return path, and an air outlet path. The air outlet path blows air from the humidity control air conditioning unit 23 into the laboratory. The indoor air return path returns the air in the laboratory to the humidity control air conditioning unit 23. The outdoor air intake path introduces outside air into the humidity control air conditioning unit 23.

[0037] The outdoor air intake path sequentially passes through the first heat exchanger 14 and the second heat exchanger 24, and uses the water in the temperature control system 10 and the humidity control system 20 to preheat the air, thereby reducing the load of the humidity control air conditioning unit 23 and saving energy. The water temperature provided by the temperature control cold and heat source air conditioning unit 11 in summer is higher than the water temperature provided by the humidity control cold and heat source air conditioning unit 21. By passing through the first heat exchanger 14 first and then the second heat exchanger 24, the temperatures of the two systems are reasonably utilized, the influence on the humidity control cold and heat source air conditioning unit 21 is reduced, and the influence on temperature and humidity regulation is small, with a small fluctuation degree.

[0038] As a specific implementation manner, the temperature control cold and heat source air conditioning unit 11 provides 15°C chilled water in summer and 35°C hot water in winter. The humidity control cold and heat source air conditioning unit 21 provides 7°C chilled water in summer and 35°C hot water in winter.

[0039] As a specific implementation manner, both the temperature control pipeline 12 and the humidity control pipeline 22 are provided with electronic descaling devices 15. The electronic descaling device 15 is used to remove impurities in the pipeline.

[0040] As a specific implementation manner, both the temperature control pipeline 12 and the humidity control pipeline 22 are provided with automatic air vents 16.

[0041] As a specific implementation manner, both the temperature control pipeline 12 and the humidity control pipeline 22 are provided with standby water pumps 17. Specifically, the first water pump 121 and the second water pump 221 are both variable frequency water pumps. Similarly, the standby water pump 17 is a variable frequency water pump.

[0042] The laboratory constant temperature and humidity system is provided with an automatic control system, configured with a temperature sensor, a dew point sensor, a display screen, a data collector, and a frequency converter. The control system and the data collector can be implemented by a single-chip microcomputer or by a PLC. After the automatic control system collects and analyzes data, it controls each actuator to perform corresponding adjustments, starts, and stops.

[0043] Working principle: For the refrigeration condition of the temperature control system 10, the load in the laboratory is the cooling load and the moisture load, and refrigeration and dehumidification are required in the laboratory. The temperature control cold and heat source air conditioner unit 11 provides 15°C chilled water. The 15°C chilled water is sent to the radiant radiator 13 in the room, absorbs the indoor heat and rises to 18°C, and is then sent to the temperature control cold and heat source air conditioner unit 11 by the first water pump 121 and cooled down to 15°C again. This cycle repeats to take away the indoor heat in the laboratory.

[0044] For the heating condition of the temperature control system 10, the load in the laboratory is the heating load and the moisture load, and heating and humidification are required in the laboratory. The temperature control cold and heat source air conditioner unit 11 provides 35°C hot water. The 35°C hot water is sent into the radiant radiator 13 in the room, releases heat and cools down to 30°C, and is then sent to the temperature control cold and heat source air conditioner unit 11 by the first water pump 121 and heated up to 35°C again. This cycle repeats to provide heat to the laboratory.

[0045] The temperature control system 10 is equipped with an automatic control system, which can fine-tune the water temperature according to the actual working condition. The first water pump 121 is set as a variable frequency water pump, which can save energy and accurately control the temperature. An electric two-way valve is installed on the outlet pipeline of the radiant radiator 13 to control the flow according to the demand, and a flow meter can be set according to the need. Temperature sensors are installed indoors to provide temperature control signals to the control system of the radiant radiator 13.

[0046] For the dehumidification condition of the humidity control system 20, the load in the laboratory is the cooling load and the moisture load, and refrigeration and dehumidification are required in the laboratory. The humidity control cold and heat source air conditioner unit 21 provides 7°C chilled water. The 7°C chilled water is sent to the humidity control air conditioner unit 23 to cool and dehumidify the air in the humidity control air conditioner unit 23. It rises to 12°C and is then sent to the humidity control cold and heat source air conditioner unit 21 by the second water pump 221 and cooled down to 7°C again. This cycle repeats to ensure the humidity requirement in the laboratory.

[0047] For the humidification condition of the humidity control system 20, the load in the laboratory is the heating load and the moisture load, and heating and humidification are required in the laboratory. The humidity control cold and heat source air conditioner unit 21 provides 35°C hot water. The 35°C hot water is sent into the humidity control air conditioner unit 23, absorbs heat and cools down to 30°C, and is then sent to the humidity control cold and heat source air conditioner unit 21 by the second water pump 221 and heated up to 35°C again. This cycle repeats to provide heat to the humidity control cold and heat source air conditioner unit 21. The humidity control cold and heat source air conditioner unit 21 heats the cold air and then humidifies the air, and sends it into the room after reaching the indoor humidity control parameter requirements.

[0048] The humidity control cold and heat source air conditioning unit 21 supplies air to the room through the ventilation holes on the radiation radiator 13 to ensure uniform indoor humidity. The humidity control system 20 is equipped with an automatic control system, which can fine-tune the water temperature according to the actual working conditions. The second water pump 221 is set as a variable frequency water pump, which can save energy and accurately control the temperature. An electric two-way valve is installed on the water outlet pipeline of the humidity control cold and heat source air conditioning unit 21 for flow control according to requirements, and a flow meter can be set as needed. A humidity sensor is installed indoors to provide a humidity control signal to the humidity control cold and heat source air conditioning unit 21.

[0049] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0050] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A laboratory constant temperature and humidity system, characterized in that: include: A temperature control system (10) and a humidity control system (20); The temperature control system (10) comprises: a temperature-controlled cold and hot source air conditioning unit (11), a temperature-controlled pipeline (12) and a radiation radiator (13); the temperature-controlled pipeline (12) supplies water from the temperature-controlled cold and hot source air conditioning unit (11) to the radiation radiator (13); the temperature-controlled pipeline (12) is provided with a first water pump (121) for pumping water and a first constant-pressure expansion water tank (122) for balancing pipeline pressure; The humidity control system (20) comprises: a humidity control cold and heat source air conditioning unit (21), a humidity control pipeline (22) and a humidity control air conditioning unit (23); the humidity control pipeline (22) supplies water from the humidity control cold and heat source air conditioning unit (21) to the humidity control air conditioning unit (23); the humidity control pipeline (22) is provided with a second water pump (221) for pumping water and a second constant pressure expansion water tank (222) for balancing pipeline pressure; The radiation radiator (13) comprises: a heat-insulating mounting plate (131), a radiation heat dissipation plate (132) and a radiation coil (133); the radiation coil (133) is located between the heat-insulating mounting plate (131) and the radiation heat dissipation plate (132); the radiation coil (133) performs thermal interaction with the laboratory through the radiation heat dissipation plate (132); the heat-insulating mounting plate (131) is located on a side of the radiation radiator (13) facing the wall; the radiation heat dissipation plate (132 ...3) is located between the heat-insulating mounting plate (131) and the radiation heat dissipation plate (132); the radiation heat dissipation plate The plate (132) is located on the side of the radiation heat sink (13) facing the room; the radiation heat sink (132) is fixed to the heat insulation mounting plate (131); a plurality of air guide channels (134) are formed between the radiation heat sink (132) and the heat insulation mounting plate (131) through a partition; a plurality of air vents are formed on the radiation heat sink (132); and the air outlet of the humidity control air conditioning unit (23) is blown into the laboratory from the air vents through the air guide channels (134).

2. A laboratory constant temperature and humidity system according to claim 1, characterized in that: The temperature control pipe (12) is provided with a first heat exchanger (14); the humidity control pipe (22) is provided with a second heat exchanger (24); the outdoor air inlet path of the humidity control air conditioning unit (23) first passes through the first heat exchanger (14) for heat exchange and then passes through the second heat exchanger (24) for heat exchange again before entering the humidity control air conditioning unit (23).

3. A laboratory constant temperature and humidity system according to claim 2, characterized in that: The first heat exchanger (14) is located on the return water path of the temperature-controlled cold and hot source air conditioning unit (11) on the temperature-controlled pipeline (12); The second heat exchanger (24) is located on the return water path of the humidity control cold and heat source air conditioning unit (21) on the humidity control pipeline (22).

4. A laboratory constant temperature and humidity system according to claim 1, characterized in that: The temperature-controlled cold and heat source air conditioning unit (11) provides 15°C cold water in summer and 35°C hot water in winter; the humidity-controlled cold and heat source air conditioning unit (21) provides 7°C cold water in summer and 35°C hot water in winter.

5. A laboratory constant temperature and humidity system according to claim 1, characterized in that: The temperature control pipe (12) and the humidity control pipe (22) are both provided with an electronic descaling device (15).

6. A laboratory constant temperature and humidity system according to claim 1, characterized in that: The temperature control pipeline (12) and the humidity control pipeline (22) are both provided with automatic exhaust valves (16).

7. A laboratory constant temperature and humidity system according to claim 1, characterized in that: The temperature control pipeline (12) and the humidity control pipeline (22) are both provided with a backup water pump (17).

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