Air conditioner special for glove box

Abstract

The utility model relates to the technical field of air conditioning units, in particular to a special air conditioner for a glove box. Comprising a base, a stainless steel bottom shell is installed at the bottom of the base, a rack and a stainless steel cover shell covering the outer side of the rack are fixedly installed on the base, an evaporator and an evaporation fan which are located in the stainless steel bottom shell are installed at the bottom of the base, a condenser and a compressor are installed on the base, and a condensation fan and an MPU control panel are installed on the two side walls of the rack respectively. The base is provided with an isolation mechanism used for isolating a condenser cavity and an evaporator cavity in the air conditioner. The utility model aims to provide a special air conditioner for a glove box, which solves the problems of waste of inert gas and insufficient temperature control precision caused by frequent ventilation in the prior art, and the defects of the traditional air conditioner in the aspects of sealing performance, vibration suppression and space adaptability. Therefore, the requirements of the glove box for high sealing performance, low vibration, intelligent control and diversified installation scenes are met.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning unit technology, and in particular to an air conditioner specifically designed for glove boxes. Background Technology

[0002] A glove box is an experimental device that fills the chamber with high-purity inert gas and circulates it to filter out active substances. Also known as an inert gas protection chamber or dry chamber, it primarily removes O2, H2O, and organic gases. It is widely used in ultra-pure environments that are anhydrous, oxygen-free, and dust-free, such as those for lithium-ion batteries and materials, semiconductors, supercapacitors, special lamps, laser welding, brazing, and other fields requiring a stable and isolated microenvironment. This product is an important device for scientific experiments in universities, research institutions, and corporate laboratories, and is widely used in important national sectors such as biochemistry, metallurgy, electronics, chemical industry, nuclear industry, geology, mining, and medicine.

[0003] Because the glove box's microenvironment is completely isolated, and various experimental equipment and lighting generate heat, the temperature inside the glove box will continuously rise. Therefore, an air conditioning unit is needed to cool the glove box. Additionally, some microenvironments have specific temperature requirements, thus air conditioning equipment is also needed to regulate and control the temperature inside the glove box to meet experimental needs.

[0004] Without a glove box air conditioner, maintaining the internal temperature of the glove box relies solely on frequent air exchange. This not only fails to achieve precise temperature control but also wastes a significant amount of inert gas (some of which are very expensive). Utility Model Content

[0005] The purpose of this utility model is to provide a special air conditioner for glove boxes, which solves the problems of inert gas waste and insufficient temperature control accuracy caused by frequent air exchange in the prior art, as well as the defects of traditional air conditioners in terms of sealing, vibration suppression and spatial adaptability, thereby meeting the needs of glove boxes for high sealing, low vibration, intelligent control and diverse installation scenarios.

[0006] The technical solution adopted by this utility model is as follows: a glove box-specific air conditioner, including a base, a stainless steel bottom shell installed at the bottom of the base, a frame and a stainless steel cover covering the outside of the frame fixedly installed on the base, an evaporator and an evaporation fan installed at the bottom of the base inside the stainless steel bottom shell, a condenser and a compressor installed on the base, a condenser fan and an MPU control board respectively installed on the two side walls of the frame, and an isolation mechanism for isolating the condenser cavity and the evaporator cavity inside the air conditioner on the base.

[0007] As a further improvement of this utility model, the base is connected to the stainless steel bottom shell, the frame, and the stainless steel cover by mounting bolts.

[0008] As a further improvement of this utility model, a number of ventilation holes are provided on the stainless steel bottom shell sidewall near the evaporator.

[0009] As a further improvement of this utility model, the condenser fan is installed on the side wall of the frame near the condenser.

[0010] As a further improvement of this utility model, the isolation mechanism includes a seamless stainless steel tube installed on the base, wherein a return gas pipe and a liquid pipe and related control lines are inserted inside the seamless stainless steel tube, and insulating glue is injected inside the seamless stainless steel tube.

[0011] As a further improvement of this utility model, the isolation mechanism includes an aviation plug installed on the base and two external threaded bases. A silicone rubber gasket is fitted at the connection between the aviation plug and the base. Both external threaded bases are provided with polytetrafluoroethylene liners. A tightening nut is threaded to the top of each of the two external threaded bases. A return gas pipe II and a liquid pipe II are respectively inserted into the two external threaded bases, the polytetrafluoroethylene liners, and the tightening nuts.

[0012] The beneficial effects of this utility model are as follows: By optimizing the components, this utility model reduces wind resistance and suppresses wind noise, thereby improving the stability of the equipment; through the independently developed MPU control board, the fan running time is significantly reduced and vibration is minimized, thus minimizing the impact of wind on the working accuracy of precision instruments inside the glove box; the base-type design concept achieves high sealing and isolation; and through the MPU control board and supporting software programs, remote early warning and network control of the equipment are realized, facilitating the management and maintenance of the equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a glove box-specific air conditioner according to this utility model (Example 1);

[0014] Figure 2 This is a schematic diagram of the overall structure of a glove box-specific air conditioner according to this utility model (Example 2);

[0015] Figure 3 This is a reference diagram showing the usage status of a glove box-specific air conditioner according to this utility model;

[0016] Figure 4 This is a schematic diagram of the system circulation of a glove box-specific air conditioner according to this utility model;

[0017] Figure 5 This is a schematic diagram of the air circulation of a glove box-specific air conditioner according to this utility model;

[0018] Figure 6 This is an exploded view of the isolation mechanism of a glove box-specific air conditioner according to this utility model (Example 1);

[0019] Figure 7 This is an exploded view of the isolation mechanism of a glove box-specific air conditioner according to this utility model (Example 2);

[0020] Figure 8 This is a control block diagram of the MPU control board of a glove box-specific air conditioner according to this utility model.

[0021] As shown in the figure: 1. Stainless steel base; 2. Evaporator fan; 3. Base; 4. MPU control board; 5. Compressor; 6. Stainless steel casing; 7. Condenser; 8. Condenser fan; 9. Evaporator; 10. Frame; 11. Mounting bolts; 12. Seamless stainless steel pipe; 13. Return gas pipe one; 14. Liquid pipe one; 15. Related control lines; 16. Aviation connector; 17. External threaded base; 18. Silicone rubber gasket; 19. PTFE liner; 20. Tightening nut; 21. Return gas pipe two; 22. Liquid pipe two; 100. Glove box; 101. Air conditioner. Detailed Implementation

[0022] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly mentioned in this specification are defined relative to their structure and are relative concepts. Therefore, they may vary depending on their location and usage; thus, these or other directional terms should not be interpreted as restrictive terms.

[0023] The singular forms “a,” “the,” and “the” used in this specification are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes one or more of the associated listed items, any or all possible combinations thereof.

[0024] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0025] like Figure 3 and Figure 4 As shown, the air conditioner 101 of this utility model is installed on the top of the glove box 100, and is a top-mounted integrated embedded installation. Meanwhile, the installation methods also include split embedded and side-mounted integrated embedded installations to meet the needs of different glove boxes 100. The evaporator 9 is located inside the glove box 100, while the condenser 7 and compressor 5 are located outside the glove box 100.

[0026] This utility model provides a glove box-specific air conditioner, including a base 3, a stainless steel bottom shell 1 installed at the bottom of the base 3, a frame 10 and a stainless steel cover 6 covering the outside of the frame 10 fixedly installed on the base 3, an evaporator 9 and an evaporation fan 2 installed at the bottom of the base 3 inside the stainless steel bottom shell 1, a condenser 7 and a compressor 5 installed on the base 3, a condenser fan 8 and an MPU control board 4 respectively installed on the two side walls of the frame 10, and an isolation mechanism for isolating the condenser cavity and the evaporator cavity inside the air conditioner on the base 3.

[0027] like Figure 6 and Figure 7 As shown, in this utility model, the base 3 is connected to the stainless steel bottom shell 1, the frame, and the stainless steel cover 6 by mounting bolts 11, which facilitates disassembly and maintenance in the later stage.

[0028] like Figure 1 , Figure 2 , Figure 5 As shown, the stainless steel bottom shell 1 near the evaporator 9 in this invention has several ventilation holes on its side wall to facilitate gas circulation, improve evaporation efficiency, and achieve a bottom-in, side-out gas circulation mode. This ensures a stable and uniform temperature field inside the box while effectively preventing the impact of gas circulation within the glove box on precision instruments and equipment.

[0029] like Figure 1 , Figure 2 , Figure 5 As shown, in this utility model, the condenser fan 8 is installed on the side wall of the frame 10 near the condenser 7 so as to dissipate the heat generated by the condenser 7 in a timely manner and improve the condensation efficiency.

[0030] Working principle: After the MPU control board 4 is powered on, it executes a self-test program to confirm that the compressor 5, condenser fan 8, evaporator fan 2, and sensors are in normal condition. The NTC temperature sensor monitors the internal temperature of the glove box 100 in real time and feeds the data back to the MPU control board 4.

[0031] (I) Temperature Triggering Stage: When the temperature inside the glove box exceeds the preset threshold, the MPU control board 4 starts the compressor 5, driving the environmentally friendly refrigerant into circulation. After being pressurized by the compressor, the refrigerant enters the condenser 7, where it liquefies and releases heat under the forced cooling of the condenser fan 8. Subsequently, it is depressurized through the throttling device and enters the evaporator 9 to vaporize and absorb heat.

[0032] (II) Evaporation and Cooling Stage: Evaporator fan 2 guides the air inside the glove box through evaporator 9, reducing the temperature inside the box through heat exchange. Hot gas inside the glove box enters through the bottom evaporator fan intake, is cooled by the evaporator, and is then evenly blown out from the exhaust vents on the side wall of the stainless steel bottom shell, achieving a bottom-in, side-out circulation pattern. This ensures a stable and uniform temperature field inside the box while effectively preventing the gas circulation within the glove box from affecting precision instruments and equipment.

[0033] (III) Precise temperature control stage: When the temperature drops to the set lower limit, the MPU control board 4 shuts down the compressor 5, but the evaporator fan 2 still runs at low speed according to the preset logic to maintain air circulation and avoid local temperature fluctuations.

[0034] The base 3 is fastened to the stainless steel bottom shell 1 and the cover shell 6 by mounting bolts 11. Combined with sealant or rubber gaskets, this ensures a complete seal between the air conditioner and the glove box, preventing inert gas leakage. The seamless stainless steel tube 12 is sealed with insulating adhesive, or the threaded base 17 is mechanically isolated with a PTFE liner 19, strictly separating the condenser cavity and effectively preventing leakage of the protective atmosphere inside the glove box, creating a glove box microenvironment that meets the requirements of scientific research.

[0035] The MPU control board 4 supports the Modbus RTU protocol via an RS485 interface, enabling networking with up to 99 air conditioners. Users can remotely set temperature parameters, start and stop equipment, and monitor operating status such as compressor load and fault alarms in real time via a host computer. Furthermore, the system has built-in over-temperature protection logic; when a sensor malfunctions or cooling fails, it automatically triggers an alarm and cuts off the power to ensure experimental safety.

[0036] Example 1

[0037] As attached Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 8 As shown, the isolation mechanism includes a seamless stainless steel tube 12 mounted on a base 3. A return gas pipe 13 and a liquid pipe 14, as well as related control lines 15, are inserted into the seamless stainless steel tube 12, and insulating glue is injected into the seamless stainless steel tube 12.

[0038] In this embodiment 1, a seamless stainless steel pipe 12 is arranged in the base 3 and fully welded using laser welding or argon arc welding. The air conditioning return pipe 13, liquid pipe 14, and related control lines 15 (such as temperature sensors, evaporator fan power lines, etc.) all pass through the seamless stainless steel pipe 12. Insulating glue is then injected into the seamless stainless steel pipe 12, and after curing for 72 hours, a seal can be achieved.

[0039] Example 2

[0040] As attached Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 , Figure 8 As shown, the isolation mechanism includes an aviation plug 16 mounted on a base 3 and two external threaded bases 17. A silicone rubber gasket 18 is fitted at the connection between the aviation plug 16 and the base 3. Both external threaded bases 17 are provided with polytetrafluoroethylene liners 19. The top of both external threaded bases 17 are threaded with tightening nuts 20. A return gas pipe 21 and a liquid pipe 22 are respectively installed inside the two external threaded bases 17, the polytetrafluoroethylene liners 19, and the tightening nuts 20.

[0041] This embodiment 2 uses a glue-free sealing method, offering better isolation. Two externally threaded bases 17 are welded onto the base 3. The internal design of the externally threaded base 17 features an inwardly tapered surface, which, in conjunction with a PTFE liner 19 and a tightening nut 20, allows the second air conditioning return pipe 21 and the second liquid pipe 22 to pass through. Tightening the tightening nut 20 achieves a tight seal by utilizing the close fit between the PTFE liner 19 and the inwardly tapered surface of the externally threaded base 17. Simultaneously, studs are welded onto the base 3 and a vacuum aviation connector 16 is installed, sealed with a silicone rubber gasket 18. Temperature sensor wires, evaporator fan wires, and other control wires of different specifications are all connected using the aviation connector 16, effectively meeting the sealing isolation requirements.

[0042] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A glove box air conditioner characterized by: The utility model provides a kind of air conditioner, including base (3), stainless steel bottom shell (1) is mounted at the bottom of base (3), rack (10) is fixedly installed on base (3) and stainless steel cover shell (6) is covered outside rack (10), evaporator (9) and evaporative fan (2) are installed in stainless steel bottom shell (1) in base (3) bottom, condenser (7) and compressor (5) are installed on base (3), condensing fan (8) and MPU control panel (4) are respectively installed on the two side walls of rack (10), and isolation mechanism for isolating the inside condenser cavity and evaporator cavity of air conditioner is equipped on base (3).

2. A glove box air conditioner according to claim 1, characterized in that: The base (3) is connected with the stainless steel bottom shell (1), the rack and the stainless steel cover shell (6) through mounting bolts (11).

3. A glove box air conditioner according to claim 1, wherein: A plurality of air holes are arranged on the side wall of the stainless steel bottom shell (1) near the evaporator (9).

4. A glove box air conditioner according to claim 1, wherein: The condensing fan (8) is installed on the side wall of the rack (10) near the condenser (7).

5. A glove box air conditioner according to claim 1, wherein: The isolation mechanism includes a seamless stainless steel pipe (12) mounted on the base (3), a gas return pipe (13) and a liquid pipe (14) and related control lines (15) are arranged in the seamless stainless steel pipe (12), and the seamless stainless steel pipe (12) is filled with insulating glue.

6. A glove box air conditioner according to claim 1, wherein: The isolation mechanism includes an aviation plug (16) and two externally threaded bases (17) mounted on the base (3), a silicone rubber gasket (18) is sleeved on the connection between the aviation plug (16) and the base (3), each of the two externally threaded bases (17) is provided with a polytetrafluoroethylene lining (19), and a tightening nut (20) is threadedly connected to the top of each of the two externally threaded bases (17), a gas return pipe (21) and a liquid pipe (22) are respectively arranged in each of the two externally threaded bases (17), the polytetrafluoroethylene lining (19) and the tightening nut (20).

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