Low temperature air cooled box

Abstract

The utility model provides a low temperature air -cooled box relates to air -cooled box technical field, include: box and set up cooling chamber in the one side of box, and cooling chamber is connected with the box, a plurality of air outlet groups are set up on the box, and the air outlet group is communicated with cooling chamber through air duct, exhaust device is set up in cooling chamber, is adjacent to set up with air duct, be used for with cooling chamber heat exchange's cooling system, with cooling chamber intercommunication, include: refrigeration road, return road and bypass road, one end of refrigeration road is communicated with the evaporimeter of setting in cooling chamber, one end of return road is communicated with the evaporimeter, and the other end is communicated with refrigeration road, one end of bypass road is communicated with the evaporimeter, and the other end is communicated with refrigeration road, and is provided with first control valve on bypass road, the low temperature air -cooled box that the utility model puts forward can adjust according to actual condition, and then reduce energy consumption problem.

Description

Technical Field

[0001] This utility model relates to the field of air-cooled box technology, and in particular to a low-temperature air-cooled box. Background Technology

[0002] In numerous fields such as industrial production, scientific experiments, food cold chain, and pharmaceutical storage, the demand for precise control and stable maintenance of specific ambient temperatures is increasingly urgent. Low-temperature air-cooled chambers, as key equipment for achieving this goal, directly impact production efficiency, experimental accuracy, and product quality and safety in these fields. However, current low-temperature air-cooled chambers on the market generally face the technical challenge of excessive energy consumption during operation.

[0003] Existing low-temperature air-cooled boxes often employ a single cooling capacity output mode during both the cooling and isothermal phases, relying primarily on heaters to balance the cooling capacity and maintain a constant temperature. Since the cooling capacity required for cooling and isothermal control differs significantly, this approach leads to excessive heating power and unnecessary energy consumption. This not only increases equipment operating costs but also contradicts the global advocacy for energy conservation and emission reduction. Furthermore, existing low-temperature air-cooled boxes lack a dynamic and continuous adjustment mechanism for cooling capacity, failing to accurately match the cooling capacity output to actual temperature requirements, further exacerbating energy waste. Utility Model Content

[0004] The purpose of this utility model is to provide a low-temperature air-cooled box that can solve the above-mentioned technical problems.

[0005] This utility model provides a low-temperature air-cooled box, comprising:

[0006] The enclosure and a cooling chamber located on one side of the enclosure, with the cooling chamber connected to the enclosure;

[0007] Several air outlet units are installed on the casing, and the air outlet units are connected to the cooling chamber through air ducts;

[0008] The exhaust system is installed in the cooling room, adjacent to the air duct.

[0009] A cooling system for heat exchange with a cooling chamber, connected to the cooling chamber; comprising: a refrigeration path, a return path, and a bypass path; one end of the refrigeration path is connected to an evaporator installed in the cooling chamber; one end of the return path is connected to the evaporator, and the other end is connected to the refrigeration path; one end of the bypass path is connected to the evaporator, and the other end is connected to the refrigeration path, and a first control valve is provided on the bypass path.

[0010] As a further technical solution, the enclosure includes:

[0011] Several support plates are connected end to end; the air duct is opened on the support plate adjacent to the cooling chamber.

[0012] As a further technical solution, the support plate includes:

[0013] Several plates are welded together, and a welding groove is provided at the welding position. A clamping plate is connected to the welding groove, and a cover plate is provided on the opposite side of the clamping plate.

[0014] As a further technical solution, the air outlet assembly includes:

[0015] The outlet air box is connected to the air duct.

[0016] Several air outlets for changing the direction of airflow are installed on the air outlet box and connected to the air outlet box.

[0017] As a further technical solution, the following are some examples:

[0018] The connector is mounted on the air outlet box;

[0019] The rotating head is rotatably mounted on the connecting seat.

[0020] As a further technical solution, the exhaust device includes:

[0021] The drive unit is mounted on the cooling chamber;

[0022] The exhaust fan is mounted on the drive unit and rotates under the drive unit's influence, allowing the air in the cooling chamber to enter the air duct.

[0023] As a further technical solution, the cooling circuit includes:

[0024] Compressor, separator, condenser, receiver, filter, and second control valve;

[0025] The compressor, separator, condenser, receiver, filter, and second control valve are all located on the first pipeline and connected through the first pipeline; one end of the first pipeline is connected to the evaporator, and the other end is connected to the return path.

[0026] As a further technical solution, the cooling circuit also includes:

[0027] Both the economizer and the solenoid valve are installed on the first pipeline and placed between the filter and the second control valve.

[0028] As a further technical solution, the return path includes:

[0029] The second pipeline is connected to the evaporator at one end and to the first pipeline at the other end.

[0030] The regenerator is installed on the second pipeline and is connected to the condenser and the liquid receiver through the third and fourth pipelines, respectively.

[0031] The second control valve and the second pipeline are connected through the fifth pipeline.

[0032] As a further technical solution, it also includes: a heater for adjusting the temperature inside the cooling chamber, which is installed inside the cooling chamber.

[0033] This invention employs a synergistic mechanism of refrigeration circuit, return circuit, and bypass circuit to establish a dynamic adjustment mechanism for cooling capacity. The first control valve on the bypass circuit can flexibly adjust the flow rate of the refrigerant entering the evaporator according to actual temperature requirements, ensuring precise matching of cooling capacity output between the cooling and constant temperature phases to the corresponding scenario needs. This avoids the problem of excessive cooling capacity requiring significant energy consumption from the heater to balance it, as is common in traditional single-mode systems, thus greatly reducing unnecessary heating power loss. Compared to the single control method in existing technologies, this invention allows for adjustments based on actual conditions, thereby reducing energy consumption. Attached Figure Description

[0034] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of a low-temperature air-cooled box according to the present invention;

[0036] Figure 2 for Figure 1 Enlarged structural diagram of section A;

[0037] Figure 3 This is a schematic diagram showing the connection between the evaporator and the cooling system in this utility model;

[0038] Figure 4 This is a structural schematic diagram of the air outlet in one state of this utility model;

[0039] Figure 5 This is a structural schematic diagram of another state of the air outlet in this utility model;

[0040] Figure 6 This is a perspective view of the exhaust fan head in this utility model;

[0041] Explanation of reference numerals in the attached figures:

[0042] 100-Box body; 101-Plate body; 102-Welding groove; 103-Clamping plate; 104-Cover plate; 105-Sealant; 200-Cooling chamber; 201-Air duct; 301-Outlet box; 302-Outlet head; 321-Connecting seat; 322-Rotating head; 401-Drive device; 402-Exhaust head; 501-Compressor; 502-Separator; 503-Condenser; 504-Liquid receiver; 541-Liquid inlet; 505-Filter; 506-Second control valve; 507-First pipeline; 508-Economizer; 509-Solenoid valve; 601-Second pipeline; 602-Regenerator; 603-Third pipeline; 604-Fourth pipeline; 605-Fifth pipeline; 700-Bypass passage; 701-First control valve; 800-Evaporator; 900-Heater. Detailed Implementation

[0043] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0044] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] like Figure 1-5 As shown, the present invention proposes a low-temperature air-cooled box, comprising:

[0047] The box body 100 and the cooling chamber 200 are disposed on one side of the box body 100, and the cooling chamber 200 is connected to the box body 100; in this utility model, the box body 100 is connected to the ground by a number of angle aluminum pieces, which are then fixed to the box body 100 by rivets, and the gap between the box body 100 and the ground is sealed with silicone; the number of angle aluminum pieces is determined according to the actual situation, and this utility model does not further limit it;

[0048] Several air outlet groups are installed on the housing 100, and the air outlet groups are connected to the cooling chamber 200 through the air duct 201; the exhaust device is installed in the cooling chamber 200, adjacent to the air duct 201; after the temperature in the cooling chamber 200 is adjusted, the exhaust device causes the air in the cooling chamber 200 to enter the air duct 201, and is then conveyed to the air outlet groups through the air duct 201. The air outlet groups then discharge the air entering the air duct 201 into the housing 100 to cool the housing 100; it should be noted that the housing 100 and the cooling chamber 200 are also connected through a return air duct (not shown in the figure), thereby realizing the air circulation in the housing 100 and the cooling chamber 200;

[0049] The cooling system is connected to the cooling chamber 200, and heat exchange occurs between them. Specifically, the cooling system includes a refrigeration path, a return path, and a bypass path 700. One end of the refrigeration path is connected to the evaporator 800 located in the cooling chamber 200. One end of the return path is connected to the evaporator 800, and the other end is connected to the refrigeration path. One end of the bypass path 700 is connected to the evaporator 800, and the other end is connected to the refrigeration path. A first control valve 701 is installed on the bypass path 700. In actual use, the required refrigerant is generated through the refrigeration path and delivered to the evaporator 800. After entering the evaporator 800, the refrigerant exchanges heat with the air in the cooling chamber 200. After the heat exchange, the refrigerant is delivered back to the refrigeration path through the return path. The system performs a cyclic refrigeration operation, thereby regulating the temperature within the cooling chamber 200 through the evaporator 800, the refrigeration circuit, and the return circuit. Furthermore, the first control valve 701 is opened and closed as needed to cool or maintain the temperature of the cooling chamber 200. Specifically, when the refrigeration circuit delivers the refrigerant, the first control valve 701 is opened, allowing the high-temperature refrigerant to directly enter the evaporator 800 and exchange heat with the air in the cooling chamber 200, thus cooling or maintaining the temperature of the cooling chamber 200. This avoids the significant energy consumption associated with cooling solely through the heater 900. Specifically, the heater 900 is located within the cooling chamber 200 and, during operation, works in conjunction with the refrigeration system to achieve precise temperature calibration.

[0050] It should be noted that this utility model is equipped with a controller (microcontroller or PLC control board, etc.) and a temperature sensor is installed in the cooling chamber 200. Based on the temperature obtained by the temperature sensor, the controller controls the opening of the first control valve 701, the second control valve 506 and the solenoid valve 509. If the temperature is higher than the target value by 1°C, the opening of the second control valve 506 is increased; if it is lower than 0.5°C, the first control valve 701 is opened for bypass.

[0051] The technical solution of this utility model establishes a dynamic adjustment mechanism for cooling capacity through the coordinated operation of the refrigeration circuit, return circuit, and bypass circuit 700. The first control valve 701 on the bypass circuit 700 can flexibly adjust the flow rate of the refrigerant entering the evaporator 800 according to actual temperature requirements, ensuring that the cooling capacity output during the cooling and constant temperature stages precisely matches the corresponding scenario requirements. This avoids the problem of excessive cooling capacity requiring the heater 900 to consume a large amount of energy to balance it, as is common in traditional single-mode systems, significantly reducing unnecessary heating power loss. Compared to the single control method in existing technologies, this utility model can adjust according to actual conditions, thereby reducing energy consumption.

[0052] like Figure 1 As shown, the housing 100 includes several support plates connected end to end; the air duct 201 is opened on the support plate adjacent to the cooling chamber 200; specifically, the support plate includes several plates 101, adjacent plates 101 are welded together, and a welding groove 102 is provided at the welding position, a retaining plate 103 is connected to the welding groove 102, and a cover plate 104 is provided on the opposite side of the retaining plate 103; it should be noted that a heat insulation layer is provided inside the plate 101, which can be a rock wool layer or a polyurethane layer, etc., as in the prior art, and this utility model does not further limit it; Figure 2 As shown, adjacent plates 101 are provided with mutually cooperating protrusions and grooves. After the adjacent plates 101 are joined, the protrusions and grooves are connected by welding, and the clamping plate 103 is snapped together with the welding groove 102. Sealant 105 is filled between the clamping plate 103 and the welding groove 102 to increase the fixing strength of the clamping plate 103 and the welding groove 102, and to increase the sealing between the clamping plate 103 and the welding groove 102. Sealant 105 is also provided between the protrusions and grooves to increase the sealing between them. Furthermore, sealant 105 is also provided at the adjacent positions of the protrusions and grooves and the cover plate 104 for sealing. In this invention, the cover plate 104 is fixed to the plate 101 by several bolts, and the number of bolts is subject to actual conditions and is not further limited in this invention.

[0053] like Figure 1As shown, the air outlet assembly includes an air outlet box 301 and several air outlets 302; the air outlet box 301 is connected to the air duct 201; several air outlets 302 are disposed on the air outlet box 301 and are connected to the air outlet box 301. By changing the air outlet direction through several air outlets 302, air can be discharged into the box 100 in different directions, thereby accelerating the cooling of the box 100; wherein, the air outlet 302 includes a connecting seat 321 and a rotating head 322. The connecting seat 321 is disposed on the air outlet box 301; the rotating head 322 is rotatably disposed on the connecting seat 321; during use, air is discharged at different angles by changing the angle of the rotating head 322. The number of air outlets 302 in this utility model is determined according to the actual situation, and the angle of the air outlets 302 is also determined according to the actual situation. This utility model is not further limited.

[0054] In this invention, the exhaust device includes a drive device 401 and an exhaust head 402. The drive device 401 is mounted on the cooling chamber 200; the exhaust head 402 is mounted on the drive device 401 and rotates under the drive of the drive device 401, allowing the gas in the cooling chamber 200 to enter the air duct 201. Figure 6 As shown, the exhaust head 402 is a structure with several inclined air outlet plates between two short plates. Driven by the drive device 401, it can allow air in the cooling chamber 200 to enter the air duct 201 through the air outlet plates. Preferably, the drive device 401 is a motor.

[0055] like Figure 2As shown, the refrigeration circuit includes a compressor 501, a separator 502, a condenser 503, a liquid receiver 504, a filter 505, and a second control valve 506. The compressor 501, separator 502, condenser 503, liquid receiver 504, filter 505, and second control valve 506 are all mounted on a first pipeline 507 and connected through the first pipeline 507. One end of the first pipeline 507 is connected to the evaporator 800, and the other end is connected to the return path. In this invention, the refrigerant is preferably a refrigerant. The refrigerant is compressed by the compressor 501 and separated into oil and water by the separator 502. The separated liquid enters the condenser 503 for cooling, forming a high-pressure, room-temperature liquid. The filter... An economizer 508 and a solenoid valve 509 are also provided between the receiver 505 and the second control valve 506. Therefore, the high-pressure room-temperature liquid sequentially passes through the receiver 504, filter 505, economizer 508, solenoid valve 509, and second control valve 506 to form a low-temperature, low-pressure gas-liquid mixture (formed using a throttling effect). This mixture continues to be conveyed in the first pipeline 507, allowing it to enter the evaporator 800, where it exchanges heat with the air in the cooling chamber 200. After heat exchange, the mixture forms a low-pressure room-temperature gas, which returns to the compressor 501 for recompression via a return path. The second control valve 506 is an expansion valve. Furthermore, in actual use, the flow rate of the first pipeline 507 is controlled by the solenoid valve 509, thereby controlling the amount of the low-temperature, low-pressure gas-liquid mixture entering the evaporator 800 and controlling the heat exchange efficiency of the evaporator 800.

[0056] The return path includes a second pipe 601 and a regenerator 602. One end of the second pipe 601 is connected to the evaporator 800, and the other end is connected to the first pipe 507. The regenerator 602 is installed on the second pipe 601 and is connected to the condenser 503 and the liquid receiver 504 through the third pipe 603 and the fourth pipe 604, respectively. The second control valve 506 is connected to the second pipe 601 through the fifth pipe 605. The low-pressure ambient temperature gas formed after passing through the evaporator 800 enters the second pipe 601 and returns to the compressor 501 under the transmission of the second pipe 601. When passing through the regenerator 602, it exchanges heat with the high-pressure ambient temperature liquid transmitted from the third pipe 603, and enters the liquid receiver 504 through the fourth pipe 604, and can then pass through the second pipe 601. The low-pressure, ambient-temperature gas in the evaporator 503 exchanges heat with the high-pressure, ambient-temperature liquid in the third pipe 603. It should be noted that the third pipe 603 and the fourth pipe 604 are part of the second pipe 601, used to connect the condenser 503 and the liquid receiver 504. Additionally, a liquid inlet 541 is provided on the liquid receiver 504, through which liquid is added to the liquid receiver 504 to facilitate better gas-liquid separation. Furthermore, the second control valve 506 is an expansion valve, which can simultaneously control the opening of the first pipe 507 and the second pipe 601, thereby limiting the amount of material entering and exiting the evaporator 800 through the cooperation of the first pipe 507 and the second pipe 601 (the material entering the evaporator 800 is a low-temperature, low-pressure gas-liquid mixture, and the material exiting the evaporator 800 is a low-pressure, ambient-temperature gas).

[0057] In this invention, the addition of the economizer 508 and solenoid valve 509 in the refrigeration circuit further improves the efficiency of the refrigeration cycle and reduces the energy consumption of core components such as the compressor 501. In the return circuit, the regenerator 602 achieves energy recovery and reuse through heat exchange with the condenser 503 and the liquid receiver 504, further optimizing energy allocation. Regarding temperature control accuracy, this invention forms a multi-dimensional precise temperature control system, solving the problems of existing equipment lacking a dynamic and continuous adjustment mechanism for cooling capacity and having poor temperature control stability. On the one hand, the dynamic adjustment capability of the cooling system can respond in real time to temperature changes within the cooling chamber 200: when the temperature needs to be rapidly reduced, the refrigeration circuit outputs sufficient cooling capacity through the efficient collaboration of components such as the compressor 501 and the condenser 503; after entering the constant temperature stage, the bypass path 700 works in conjunction with the return path to fine-tune the cooling capacity and reduce temperature fluctuations. On the other hand, the heater 900 added inside the cooling chamber 200 can serve as a supplementary means of temperature control. When the cooling capacity adjustment cannot meet the extremely fine temperature requirements, it can quickly calibrate the temperature inside the cooling chamber 200 to ensure that the temperature is always maintained within the target range.

[0058] Meanwhile, the enclosure 100 adopts a structure with several support plates connected end to end. The air duct 201 is opened on the support plate adjacent to the cooling chamber 200. This design allows the cold air in the cooling chamber 200 to be quickly and evenly delivered to the air outlet through the air duct 201, avoiding the problem of uneven local temperature within the enclosure 100. Furthermore, the support plate is welded from several plates 101. The welding groove 102 at the welding position cooperates with the clamping plate 103 and the cover plate 104, which not only enhances the structural strength of the weld joint, preventing cracking of the weld joint due to alternating hot and cold temperatures during long-term use and extending the service life of the equipment, but also improves the sealing performance of the enclosure 100, reduces cold leakage, and further ensures temperature control and energy efficiency. Additionally, the plates 101 adopt a modular design, allowing them to be directly processed and formed in the factory and installed on-site, thereby reducing construction difficulty and improving construction efficiency.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A low-temperature air-cooled box, characterized in that, include: The enclosure (100) and the cooling chamber (200) disposed on one side of the enclosure (100), wherein the cooling chamber (200) is in communication with the enclosure (100); Several air outlet groups are arranged on the housing (100), and the air outlet groups are connected to the cooling chamber (200) through air ducts (201); An exhaust system is installed inside the cooling chamber (200) and adjacent to the air duct (201); A cooling system for heat exchange with the cooling chamber (200) and connected to the cooling chamber (200); comprising: a refrigeration path, a return path and a bypass path (700), one end of the refrigeration path being connected to an evaporator (800) disposed in the cooling chamber (200); one end of the return path being connected to the evaporator (800) and the other end being connected to the refrigeration path; One end of the bypass passage (700) is connected to the evaporator (800), and the other end is connected to the refrigeration circuit. A first control valve (701) is provided on the bypass passage (700).

2. The low-temperature air-cooled box according to claim 1, characterized in that, The housing (100) includes: Several support plates are connected end to end; the air duct (201) is opened on the support plate adjacent to the cooling chamber (200).

3. The low-temperature air-cooled box according to claim 2, characterized in that, The support plate includes: Several plates (101) are welded together, and a welding groove (102) is provided at the welding position. A clamping plate (103) is connected to the welding groove (102), and a cover plate (104) is provided on the opposite side of the clamping plate (103).

4. The low-temperature air-cooled box according to claim 1, characterized in that, The air outlet assembly includes: An air outlet box (301) is connected to the air duct (201); Several air outlets (302) for changing the air outlet direction are disposed on the air outlet box (301) and communicate with the air outlet box (301).

5. The low-temperature air-cooled box according to claim 4, characterized in that, The air outlet (302) includes: A connecting seat (321) is provided on the air outlet box (301); The rotating head (322) is rotatably mounted on the connecting seat (321).

6. The low-temperature air-cooled box according to claim 1, characterized in that, The exhaust device includes: A drive unit (401) is provided on the cooling chamber (200); An exhaust fan (402) is mounted on the drive device (401) and rotates under the drive of the drive device (401) to allow the gas in the cooling chamber (200) to enter the air duct (201).

7. The low-temperature air-cooled box according to claim 1, characterized in that, The cooling circuit includes: Compressor (501), separator (502), condenser (503), liquid receiver (504), filter (505), and second control valve (506); The compressor (501), separator (502), condenser (503), liquid receiver (504), filter (505), and second control valve (506) are all installed on the first pipeline (507) and connected through the first pipeline (507); one end of the first pipeline (507) is connected to the evaporator (800), and the other end is connected to the return path.

8. The low-temperature air-cooled box according to claim 7, characterized in that, The cooling circuit also includes: The economizer (508) and the solenoid valve (509) are both installed on the first pipeline (507) and placed between the filter (505) and the second control valve (506).

9. The low-temperature air-cooled box according to claim 8, characterized in that, The return path includes: The second pipe (601) is connected at one end to the evaporator (800) and at the other end to the first pipe (507); The regenerator (602) is installed on the second pipe (601) and is connected to the condenser (503) and the liquid receiver (504) through the third pipe (603) and the fourth pipe (604) respectively; The second control valve (506) is connected to the second pipeline (601) through the fifth pipeline (605).

10. The low-temperature air-cooled box according to claim 1, characterized in that, Also includes: A heater (900) for adjusting the temperature inside the cooling chamber (200) is provided inside the cooling chamber (200).

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