Variable-frequency air-cooling automatic control system

Abstract

The utility model relates to the technical field of cooling control, in particular to a variable-frequency air-cooling automatic control system, which comprises a control cabinet, a circulating cooling unit, an inflating unit, a temperature sensor and a pressure sensor, and is characterized in that the circulating cooling unit, the inflating unit, the temperature sensor and the pressure sensor are all connected with the control cabinet; the inflation unit is connected to the circulating cooling unit, the circulating cooling unit is communicated with a cavity in which a workpiece to be cooled is placed, and the pressure sensor is arranged on the cavity and used for detecting the pressure in the cavity and transmitting pressure information to the control cabinet; the temperature sensor is arranged on the workpiece to be cooled and used for detecting the temperature of the workpiece to be cooled and transmitting temperature information to the control cabinet. The cooling waiting time of the workpiece to be cooled is shortened, the cooling efficiency is improved, and the cooling efficiency can be guaranteed while the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling control, in particular to a variable frequency air cooling automatic control system. Background Art

[0002] The process from powder filling to welding and packaging of the bag includes: first, placing the bag on a vibration table in the powder filling chamber to compact the powder in the bag, and then covering the bag with a lid, and then opening the isolation cabin door, using the transmission mechanism to transfer the bag from the powder filling chamber to the welding chamber, closing the isolation cabin door, and then starting the vacuum system to degas the bag, and finally starting the induction heating equipment to heat the bag, keeping it warm for a period of time and then cooling it, and after cooling, starting the welding equipment to weld and package the cooled bag.

[0003] After the package is welded and packaged, it is often in a high temperature state. If the furnace is opened at this moment, it will not only cause oxidation on the surface of the package, but also shorten the service life of the heating components in the furnace, and there are also safety hazards. Therefore, the usual operating procedure is to let the package cool down naturally to a suitable temperature in a vacuum environment, and then open the furnace to remove the package. However, since the furnace is in a vacuum state and the overall sealing performance of the equipment is good, the medium required for heat transfer is extremely scarce, resulting in an extremely long cooling process, usually requiring more than 12 hours, which seriously restricts the production efficiency of the equipment.

[0004] In view of this, the inventor provides a variable frequency air cooling automatic control system to solve the above technical problems. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art and provide a variable frequency air cooling automatic control system, which shortens the cooling waiting time of the workpiece to be cooled and improves the cooling efficiency by providing an air filling unit for filling inert gas into the cavity and a circulating cooling unit.

[0006] The purpose of the utility model is to solve the problem through the following technical solutions:

[0007] The utility model provides a variable frequency air cooling automatic control system, comprising a control cabinet, a circulating cooling unit, an air charging unit, a temperature sensor and a pressure sensor, wherein the circulating cooling unit, the air charging unit, the temperature sensor and the pressure sensor are all connected to the control cabinet;

[0008] The air charging unit is connected to the circulating cooling unit, the circulating cooling unit is connected to the cavity where the workpiece to be cooled is placed, and the pressure sensor is arranged on the cavity to detect the pressure in the cavity and transmit the pressure information to the control cabinet;

[0009] The temperature sensor is arranged on the workpiece to be cooled, and is used for detecting the temperature of the workpiece to be cooled and transmitting the temperature information to the control cabinet.

[0010] Furthermore, the circulating cooling unit includes a first pipeline, which forms a circulation loop with the cavity, the input end of the first pipeline is connected to the output end of the cavity, and the output end of the first pipeline is connected to the input end of the cavity; on the first pipeline, along the direction from its input end to the output end, a return air valve, a heat exchanger, a blower and an air inlet valve respectively connected to the control cabinet are arranged in sequence.

[0011] Furthermore, the inflation unit comprises a second pipeline and an inert gas valve arranged on the second pipeline, the output end of the second pipeline is connected to the first pipeline and is located between the air inlet valve and the input end of the cavity.

[0012] Furthermore, the control cabinet includes a controller, a digital quantity module, an analog quantity module and a frequency converter, and the digital quantity module, the analog quantity module and the frequency converter are all connected to the controller;

[0013] The return air valve, the inlet air valve, the inert gas valve and the heat exchanger are all connected to the digital quantity module;

[0014] The temperature sensor and the pressure sensor are both connected to the analog quantity module;

[0015] The blower is connected with the frequency converter.

[0016] Furthermore, the control system also includes a host computer, and the host computer is connected to the controller.

[0017] Furthermore, inert gas is transported into the cavity through the second pipeline, the inert gas valve and the first pipeline.

[0018] Furthermore, the blower is a variable frequency blower.

[0019] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0020] 1) The utility model provides a variable frequency air cooling automatic control system, which shortens the cooling waiting time of the workpiece to be cooled and improves the cooling efficiency by arranging an air charging unit for charging inert gas into the cavity and a circulating cooling unit; at the same time, a pressure sensor and a temperature sensor connected to the control cabinet are also provided, which can detect the pressure in the cavity and the temperature of the workpiece to be cooled in real time to ensure the safety of the production process.

[0021] 2) The utility model provides a variable frequency air cooling automatic control system, which fills inert gas into the cavity. The low-temperature inert gas contacts the workpiece to be cooled and takes away its own heat, thereby achieving the purpose of cooling. The higher the content of the inert gas filled, the more heat is taken away in one cycle. The utility model determines the amount of inert gas filled according to the size of the workpiece to be cooled, while meeting the requirement of rapid cooling, reducing gas consumption and reducing operating costs; and the blower is a variable frequency blower that can adjust different speeds, so the combination of the two realizes variable frequency air cooling control. The system can save costs while ensuring cooling efficiency.

[0022] 3) The utility model provides a variable frequency air cooling automatic control system, which realizes controllable and visual operation during the cooling process by connecting the host computer with the controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings herein are incorporated into and constitute a part of this specification, and together with the description, are used to explain the principles of the present utility model.

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1 It is a structural schematic diagram of the variable frequency air cooling automatic control system of the utility model.

[0026] Among them: 1 is a control cabinet; 2 is a circulating cooling unit; 3 is an air charging unit; 4 is a temperature sensor; 5 is a pressure sensor; 6 is a cavity; 7 is a host computer; 11 is a controller; 12 is a digital module; 13 is an analog module; 21 is a first pipeline; 22 is a return air valve; 23 is a heat exchanger; 24 is a blower; 25 is an air inlet valve; 31 is a second pipeline; 32 is an inert gas valve. DETAILED DESCRIPTION

[0027] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the utility model. Instead, they are only examples of devices consistent with some aspects of the utility model as detailed in the attached claims.

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] See also Figure 1 The embodiment of the utility model provides a variable frequency air cooling automatic control system, including a control cabinet 1, a circulating cooling unit 2, an air charging unit 3, a temperature sensor 4 and a pressure sensor 5, wherein the circulating cooling unit 2, the air charging unit 3, the temperature sensor 4 and the pressure sensor 5 are all connected to the control cabinet 1;

[0030] The air charging unit 3 is connected to the circulating cooling unit 2, and the circulating cooling unit 2 is connected to the cavity 6 where the workpiece to be cooled is placed. The pressure sensor 5 is arranged on the cavity 6 to detect the pressure in the cavity 6 and transmit the pressure information to the control cabinet 1;

[0031] The temperature sensor 4 is disposed on the workpiece to be cooled, and is used to detect the temperature of the workpiece to be cooled and transmit the temperature information to the control cabinet 1 .

[0032] Specifically, in this embodiment, the cavity 6 is a closed vacuum cavity, and the workpiece to be cooled is a sheath.

[0033] In this embodiment, the circulating cooling unit 2 includes a first pipeline 21, which forms a circulation loop with the cavity 6. Specifically, the input end of the first pipeline 21 is connected to the output end of the cavity 6, and the output end of the first pipeline 21 is connected to the input end of the cavity 6; on the first pipeline 21, a return air valve 22, a heat exchanger 23, a blower 24 and an air inlet valve 25 are arranged in sequence along the direction from the input end to the output end of the first pipeline 21, and the return air valve 22, the heat exchanger 23, the blower 24 and the air inlet valve 25 are all connected to the control cabinet 1.

[0034] In this embodiment, the gas charging unit 3 includes a second pipeline 31 and an inert gas valve 32 disposed on the second pipeline 31. The output end of the second pipeline 31 is connected to the first pipeline 21 and is located between the air inlet valve 25 and the input end of the cavity 6. The inert gas is transported into the cavity 6 through the second pipeline 31, the inert gas valve 32 and the first pipeline 21.

[0035] In this embodiment, the control cabinet 1 includes a controller 11, a digital quantity module 12, an analog quantity module 13 and a frequency converter. The digital quantity module 12 and the analog quantity module 13 are both electrically connected to the controller 11, and the frequency converter is connected to the controller 11 via an RS-485 bus.

[0036] The return air valve 22, the inlet air valve 25, the inert gas valve 32 and the heat exchanger 23 are all electrically connected to the digital quantity module 12;

[0037] The temperature sensor 4 and the pressure sensor 5 are both electrically connected to the analog quantity module 13;

[0038] The blower 24 is electrically connected to the frequency converter.

[0039] Furthermore, the control system also includes a host computer 7, and the host computer 7 is connected to the controller 11 via Ethernet.

[0040] Furthermore, the blower 24 is a variable frequency blower. Specifically, a blower of model WJH20-0.5 is selected.

[0041] Specifically, in this embodiment, the heat exchanger 23 uses Osinen AC50.

[0042] By using an air-cooled automatic control system, the cooling time of the package in this embodiment is shortened by 47% compared to the natural cooling time. Specifically, the natural cooling time of the package is about 5.5 hours, and the cooling time after using the system of the utility model is about 3 hours.

[0043] The specific process of the utility model in practical application is as follows:

[0044] 1) When the workpiece to be cooled in the cavity 6 needs to be cooled quickly, information is transmitted to the controller 11 through the temperature sensor 4 and the pressure sensor 5, and the pressure in the cavity 6 and the temperature of the workpiece to be cooled are checked on the host computer 7;

[0045] 2) Open the inert gas valve 32 to fill the inert gas. When the pressure sensor 5 detects that the pressure in the cavity 6 reaches the set pressure, the pressure information is transmitted to the controller 11, and the controller 11 further controls the closing of the inert gas valve 32;

[0046] 3) Open the air inlet valve 25 and the air return valve 22, set the air inlet volume according to the process requirements, and then start the blower 24. Meanwhile, monitor the pressure in the cavity 6 (since the first pipeline 21 and the cavity 6 are connected, the pressure in the cavity 6 is equal to the pressure in the first pipeline 21) and the temperature of the workpiece to be cooled in real time on the host computer 7;

[0047] 4) When the temperature of the workpiece to be cooled drops to a predetermined temperature, the blower 24 is turned off. In addition, after the first pipeline 21 drops to atmospheric pressure, the air inlet valve 25, the air return valve 22 and the heat exchanger 23 are closed, and the cooling of the workpiece to be cooled is completed.

[0048] It should be noted that the utility model has a wide range of applications and can be applied to all scenarios requiring rapid cooling, and is particularly suitable for cooling workpieces in high vacuum chambers.

[0049] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention.

[0050] It should be understood that the present invention is not limited to the above-described contents, and various modifications and changes can be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. A variable frequency air cooling automatic control system, characterized in that: It comprises a control cabinet (1), a circulating cooling unit (2), an air charging unit (3), a temperature sensor (4) and a pressure sensor (5), wherein the circulating cooling unit (2), the air charging unit (3), the temperature sensor (4) and the pressure sensor (5) are all connected to the control cabinet (1); The air charging unit (3) is connected to the circulating cooling unit (2), the circulating cooling unit (2) is connected to a cavity (6) in which a workpiece to be cooled is placed, and the pressure sensor (5) is arranged on the cavity (6) to detect the pressure in the cavity (6) and transmit the pressure information to the control cabinet (1); The temperature sensor (4) is arranged on the workpiece to be cooled, and is used to detect the temperature of the workpiece to be cooled and transmit the temperature information to the control cabinet (1).

2. The variable frequency air cooling automatic control system according to claim 1 is characterized in that: The circulating cooling unit (2) comprises a first pipeline (21), wherein the first pipeline (21) and the cavity (6) form a circulation loop, wherein the input end of the first pipeline (21) is connected to the output end of the cavity (6), and the output end of the first pipeline (21) is connected to the input end of the cavity (6); and an air return valve (22), a heat exchanger (23), a blower (24), and an air inlet valve (25) which are respectively connected to the control cabinet (1) are arranged in sequence on the first pipeline (21) along the direction from the input end to the output end.

3. The variable frequency air cooling automatic control system according to claim 2 is characterized in that: The charging unit (3) comprises a second pipeline (31) and an inert gas valve (32) arranged on the second pipeline (31); the output end of the second pipeline (31) is connected to the first pipeline (21) and is located between the air inlet valve (25) and the input end of the cavity (6).

4. The variable frequency air cooling automatic control system according to claim 3 is characterized in that: The control cabinet (1) comprises a controller (11), a digital quantity module (12), an analog quantity module (13) and a frequency converter, wherein the digital quantity module (12), the analog quantity module (13) and the frequency converter are all connected to the controller (11); The return air valve (22), the inlet air valve (25), the inert gas valve (32) and the heat exchanger (23) are all connected to the digital quantity module (12); The temperature sensor (4) and the pressure sensor (5) are both connected to the analog quantity module (13); The blower (24) is connected to a frequency converter.

5. The variable frequency air cooling automatic control system according to claim 4 is characterized in that: The control system further comprises a host computer (7), and the host computer (7) is connected to the controller (11).

6. The variable frequency air cooling automatic control system according to claim 3 is characterized in that: The inert gas is transported into the cavity (6) via the second pipeline (31), the inert gas valve (32) and the first pipeline (21).

7. The variable frequency air cooling automatic control system according to claim 2 is characterized in that: The blower (24) is a variable frequency blower.

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