Refrigeration mechanism and code reader

Abstract

The utility model relates to a refrigeration mechanism and a code reader, and the mechanism comprises a refrigeration assembly which comprises a cold end face and a hot end face which are opposite to each other; the first surface of the first heat conducting plate is attached to the cold end surface of the refrigeration assembly; the heat dissipation mechanism comprises a second heat conduction plate, multiple fins, a fan and a first shell, the first face of the second heat conduction plate is attached to the hot end face of the refrigeration assembly, gap spaces are formed between the multiple fins, the multiple fins are connected to the second face of the second heat conduction plate, the fan is arranged at the ends of the fins, and the first shell is arranged on the second face of the second heat conduction plate. The first shell covers the second face of the second heat conduction plate. The first shell is provided with an air duct opening communicating with the fan and the gap space. According to the above arrangement, through cooperation of the refrigeration assembly and the heat dissipation mechanism, a small-range low-temperature environment is provided to avoid overhigh temperature of the code reader, the code reader can be suitable for a small-size space, reliability of data acquisition is ensured, and the service life of the code reader is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of code reader, especially a refrigeration mechanism and code reader. BACKGROUND

[0002] In today's industrial production, logistics transportation and various data collection scenes, the code reader plays a crucial role. The code reader can quickly and accurately read various bar codes or two-dimensional code information, realize the automatic collection and transmission of data, and greatly improve the work efficiency and data accuracy.

[0003] The existing code reader generates heat continuously in the internal electronic components during long-term work. With the continuous accumulation of heat, the temperature of the code reader gradually rises. The high temperature will have many adverse effects on the performance of the code reader. On the one hand, high temperature may cause the performance of the internal electronic components of the code reader to be unstable, which reduces the accuracy of code reading and causes misreading, missing reading and other situations, affecting the reliability of data collection; on the other hand, the service life of the code reader will be significantly shortened in the high temperature environment for a long time, increasing the maintenance cost and replacement frequency of the equipment. UTILITY MODEL CONTENTS

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the influence of high temperature on the code reader in the prior art, reduce the service life and precision of the code reader, and provide a refrigeration mechanism and code reader.

[0005] To solve the above technical problems, the utility model provides a refrigeration mechanism, which comprises:

[0006] The refrigeration assembly comprises opposite cold end faces and hot end faces;

[0007] The first heat-conducting plate has a first face attached to the cold end face of the refrigeration assembly;

[0008] The heat dissipation mechanism comprises a second heat-conducting plate, fins, a fan and a first housing. The first face of the second heat-conducting plate is attached to the hot end face of the refrigeration assembly. The fins are a plurality of fins with gap spaces between adjacent fins. The plurality of fins are connected to the second face of the second heat-conducting plate. The fan is arranged at the end of the fin. The first housing is arranged on the second face of the second heat-conducting plate. The first housing is provided with a fan duct opening connected to the fan and the gap space.

[0009] In an embodiment of the utility model, the refrigeration assembly is a semiconductor refrigeration assembly.

[0010] In an embodiment of the utility model, the second heat conduction plate is provided with a slot, and the fins are inserted into the second heat conduction plate through the slot; the plurality of fins extend along a first direction, and the planes where the plurality of fins are located are parallel and perpendicular to the plane where the second heat conduction plate is located.

[0011] In an embodiment of the utility model, the air duct opening comprises: first air duct openings respectively provided on both sides of the first shell along a first direction; and the two ends of the gap space are respectively connected to the outside through the air outlet.

[0012] In an embodiment of the utility model, the air duct opening further comprises a second air duct opening provided at the end of the first shell, the second air duct opening is connected to the air inlet side of the fan, the gap space is connected to the air outlet side of the fan, and the second air duct opening is provided with a filter screen.

[0013] In an embodiment of the utility model, the first shell and the second heat conduction plate enclose a heat dissipation space, the first air duct opening and the second air duct opening are both connected to the heat dissipation space, and the second heat conduction plate, the fins and the fan are all located in the heat dissipation space.

[0014] In an embodiment of the utility model, the cold end face cover of the refrigeration assembly is provided with a second shell, the second shell and the refrigeration assembly enclose a refrigeration space, the refrigeration space is used for preventing a workpiece to be cooled, the workpiece to be cooled is attached to the second surface of the first heat conduction plate, and the second shell is provided with a window corresponding to the workpiece to be cooled.

[0015] In an embodiment of the utility model, the second shell is provided with a power supply interface, a temperature sensor is arranged in the refrigeration space, the temperature sensor is electrically connected to the refrigeration assembly, and the temperature sensor and the refrigeration assembly are both electrically connected to the power supply interface.

[0016] The utility model also provides a code reader, which comprises:

[0017] The above refrigeration mechanism;

[0018] The code reader body is attached to the second surface of the first heat conduction plate.

[0019] In an embodiment of the utility model, the code reader body is fixedly connected with a pressure contact piece, the pressure contact piece comprises a fixed part, an elastic part and a bent part which are sequentially connected, the fixed part is fixedly connected to the code reader body, the elastic part is inclined from the fixed part to a direction away from the code reader body, the bent part is inclined from the end of the elastic part to a direction close to the code reader body, a pressure contact space is enclosed between the bent part, the elastic part and the code reader body, and the pressure contact space is used for fixing the probe of the temperature sensor.

[0020] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0021] The cooling mechanism described in this utility model, through the cooperation of cooling components and heat dissipation mechanisms, provides a small-scale low-temperature environment to prevent the barcode reader from overheating when the ambient temperature is high. It is not only small in size and has a compact internal structure, making it suitable for small spaces, but also ensures the reliability of data acquisition and extends the service life of the barcode reader. Attached Figure Description

[0022] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0023] Figure 1 This is a schematic diagram of the refrigeration mechanism of this utility model. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the refrigeration mechanism of this utility model. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the structure of the first housing of this utility model;

[0026] Figure 4 This is a schematic diagram of the heat dissipation mechanism of this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the barcode reader of this utility model;

[0028] Figure 6 This is a schematic diagram showing the positions of the cooling component and the code reader of this utility model.

[0029] Explanation of reference numerals in the accompanying drawings: 1. Cooling component; 2. First housing; 3. First air duct opening; 4. Second housing; 5. Window; 6. Power interface; 7. Second air duct opening; 8. Filter screen; 9. First heat conduction plate; 10. Slot; 11. Fin; 12. Fan; 13. Temperature sensor; 14. Second heat conduction plate; 15. Heat insulation plate; 16. Code reader; 17. Press-fit component; 171. Fixing part; 172. Elastic part; 173. Bending part. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0031] Example 1

[0032] Reference Figures 1-6As shown, a refrigeration mechanism of this utility model includes:

[0033] Refrigeration component 1, which includes opposing cold end face and hot end face;

[0034] The first heat-conducting plate 9 has its first surface attached to the cold end surface of the refrigeration component 1;

[0035] The heat dissipation mechanism includes: a second heat-conducting plate 14, fins 11, a fan 12, and a first housing 2. The first surface of the second heat-conducting plate 14 is attached to the hot end surface of the cooling component 1. There are multiple fins 11 with gaps between adjacent fins 11. The multiple fins 11 are connected to the second surface of the second heat-conducting plate 14. The fan 12 is disposed at the end of the fins 11. The first housing 2 covers the second surface of the second heat-conducting plate 14. The first housing 2 has an air duct opening that connects the fan 12 and the gap space.

[0036] The refrigeration mechanism described in this utility model provides a cold end face with a lower temperature through a refrigeration component 1. The cold end face provides a refrigeration surface. Due to the temperature difference between the cold refrigeration surface with a lower temperature and the workpiece with a higher temperature, heat is transferred from the high-temperature region to the low-temperature region, thereby cooling the workpiece. Since energy is conserved and the refrigeration component 1 itself generates heat during operation, the heat of the refrigeration component 1 is transferred to the first heat-conducting plate 9 by attaching it to the hot end face of the refrigeration component 1. The heat dissipation area of ​​the first heat-conducting plate 9 is increased by the fins 11, thereby improving the heat conduction efficiency and heat radiation area. Since the fins 11 have a large heat dissipation area, the air can fully absorb the heat on the fins 11. The fan 12 discharges the heated air through the air duct into the first housing 2, reducing the overall temperature of the heat dissipation mechanism. The first housing 2, in conjunction with the air duct, guides the airflow, allowing the air to flow evenly through the gaps between the fins 11, improving the heat dissipation efficiency.

[0037] Reference Figure 4 As shown, the second heat-conducting plate 14 has a slot 10, and the fins 11 are inserted into the second heat-conducting plate 14 through the slot 10. Since the fins 11 are tightly inserted into the second heat-conducting plate 14 through the slot 10, heat can be conducted along the second heat-conducting plate 14 to the slot 10, and then transferred to the fins 11. The heat conduction area of ​​the second heat-conducting plate 14 and the fins 11 is the inner wall area of ​​the slot 10, which can increase the heat conduction area compared to the fins 11 being directly attached to the second heat-conducting plate 14.

[0038] Reference Figure 4 As shown, the plurality of fins 11 extend along a first direction, and the planes on which the plurality of fins 11 lie are parallel and perpendicular to the plane on which the second heat-conducting plate 14 lies. The first direction is the length direction of the heat dissipation mechanism. Figure 1 The left and right directions are defined by the width of the heat dissipation mechanism.Figure 1 In the front-back direction, multiple fins 11 are arranged along the second direction. After the fan 12 is turned on, the air flows along the air duct path under the push of the fan 12. Because multiple fins 11 extend along the first direction and are parallel to each other on the plane, the air can smoothly enter the gap space between the fins 11 to form a uniform airflow channel.

[0039] Reference Figures 1-3 As shown, the air duct includes: first air duct openings 3 respectively opened on both sides of the first housing 2 along the first direction, and the two ends of the gap space are respectively connected to the outside through exhaust ports. Under the action of the fan 12 wind pressure, hot air flows to the first air duct openings 3. The fan 12 is set in the middle of the fins 11, so that the hot air is discharged to the outside through the first air duct openings 3 opened on both sides of the first housing 2 along the first direction, thereby increasing the air volume and thus increasing the heat dissipation efficiency.

[0040] Reference Figures 1-3 As shown, the air duct also includes a second air duct opening 7 located at the end of the first housing 2. The second air duct opening 7 is connected to the air inlet side of the fan 12, and the gap space is connected to the air outlet side of the fan 12. A filter screen 8 is provided in the second air duct opening 7. The suction force generated by the fan 12 draws in outside air through the second air duct opening 7. The filter screen 8 intercepts foreign objects carried in the air, protecting the fan 12 from jamming and preventing the operator from being injured by the fan 12.

[0041] The first housing 2 and the second heat-conducting plate 14 enclose a heat dissipation space. The first air duct 3 and the second air duct 14 are both connected to the heat dissipation space. The second heat-conducting plate 14, the fins 11 and the fan 12 are all located in the heat dissipation space, which increases the airflow rate in the gap space between adjacent fins 11.

[0042] Reference Figures 1-2 As shown, the cold end cover of the refrigeration component 1 is provided with a second housing 4. The second housing 4 and the refrigeration component 1 enclose a refrigeration space, which is used to place the workpiece to be refrigerated. The refrigeration space is attached to the second side of the first heat-conducting plate 9. The second housing 4 has a window 5 corresponding to the workpiece to be refrigerated. When the refrigeration component 1 is working, the temperature of its cold end face decreases. The cold energy generated by the refrigeration component 1 is transferred to the first side of the first heat-conducting plate 9 that is attached to it. Due to the good thermal conductivity of the first heat-conducting plate 9, the cold energy is quickly conducted from the first side to the second side. The first heat-conducting plate 9 is an aluminum plate or a copper plate. The workpiece to be refrigerated, placed in the refrigeration space and attached to the second side of the first heat-conducting plate 9, absorbs the cold energy transferred from the first heat-conducting plate 9. The cold energy is continuously transferred from the refrigeration component 1 to the workpiece to be refrigerated through the first heat-conducting plate 9, reducing the temperature of the workpiece to be refrigerated and achieving a refrigeration effect.

[0043] Reference Figure 2As shown, the second housing 4 is provided with a power interface 6. A temperature sensor 13 is installed in the cooling space. The temperature sensor 13 is electrically connected to the cooling component 1. Both the temperature sensor 13 and the cooling component 1 are electrically connected to the power interface 6, which connects to an external power source to provide power to the entire cooling mechanism. The temperature sensor 13 continuously detects the temperature of the workpiece to be cooled and converts the temperature information into an electrical signal. The preset temperature of the cooling space is T0. When the actual temperature T in the cooling space is higher than T0, the electrical signal output by the temperature sensor 13 indicates that the current temperature is high. An external controller or an internal controller determines that the cooling component 1 needs to be activated to lower the temperature and powers on the cooling component 1. The temperature sensor 13 includes a sensor body and probes electrically connected to it, and the number of probes is at least two.

[0044] The cooling component 1 is a semiconductor cooling component 1. Compared with traditional cooling methods, the semiconductor cooling component 1 has advantages such as small size, light weight, no moving mechanical parts, and no refrigerant contamination. The semiconductor cooling component 1 is typically composed of N-type semiconductors and P-type semiconductors, connected together in series or parallel, and encapsulated in a housing. When a direct current is applied, the Peltier effect occurs, and electrons move between the N-type and P-type semiconductors. At the cold end, electrons transition from a high energy level to a low energy level, absorbing heat from the surrounding environment, causing the temperature at that end to decrease, forming a cold end face; while at the hot end, electrons transition from a low energy level to a high energy level, releasing heat, causing the temperature to rise, forming a hot end face. In some embodiments, thermally conductive silicone grease is applied to both ends of the semiconductor cooling component 1 to reduce contact thermal resistance.

[0045] Reference Figure 6 As shown, a heat insulation plate 15 is attached to the end face of the second heat-conducting plate 14. The heat insulation plate 15 has a through-hole for mounting. The barcode reader 16 is adapted to pass through the mounting hole and is attached to the second heat-conducting plate 14. The heat insulation plate 15 can reduce the cold loss of the cooling chip assembly around the barcode reader 16 and improve the cooling effect. At the same time, it can be used in conjunction with the mounting hole to limit and position the barcode reader 16.

[0046] The semiconductor cooling assembly 1 includes a cooling chip assembly. The cooling chip assembly has extensions at both ends along its length. The extensions, the first housing 2, and the second heat-conducting plate 14 are locked together by a first bolt assembly. The fan 12 is locked to the second heat-conducting plate 14 by passing through the fin 11 through the second bolt assembly. The first heat-conducting plate 9 and the second housing 4 are locked together by a third bolt assembly. The fin 11 and the second heat-conducting plate 14 are made of copper or aluminum.

[0047] Example 2

[0048] This embodiment provides a barcode reader 16, including a cooling mechanism as described in Embodiment 1, and a barcode reader 16 body; the barcode reader 16 body is attached to the second side of the first heat-conducting plate 9.

[0049] The barcode reader 16 provided in this embodiment generates heat when its internal electronic components start performing a barcode reading task. When the temperature of the barcode reader 16 exceeds 60°C, the cooling assembly 1 is activated to provide a cooler end face. The cooling energy is transferred through the first heat-conducting plate 9 to the barcode reader 16 body, which is in contact with the second side of the first heat-conducting plate 9. This allows the heat generated by the barcode reader 16 body to be dissipated in a timely manner, keeping its temperature within a reasonable range. This helps maintain the stable working state of the barcode reader 16 body, improves the accuracy and efficiency of barcode reading, extends the service life of the barcode reader 16, and ensures that the barcode reader 16 can continuously and reliably complete the barcode reading task.

[0050] The second housing 4 is made of POM (polyoxymethylene resin), which has rigidity and high wear resistance. When the workpiece to be cooled is the barcode reader 16, the window 5 is configured as a barcode reading port, and its size and shape correspond to the sensing devices of the barcode reader 16, such as photodiodes, cameras, laser reading heads, etc.

[0051] Reference Figure 5 As shown, a crimping member 17 is fixedly connected to the body of the barcode reader 16. The crimping member 17 includes a fixing part 171, an elastic part 172, and a bending part 173 connected in sequence. The fixing part 171 is fixedly connected to the body of the barcode reader 16. The elastic part 172 is inclined away from the fixing part 171 from the body of the barcode reader 16. The bending part 173 is inclined towards the body of the barcode reader 16 from the end of the elastic part 172. A crimping space is enclosed between the bending part 173, the elastic part 172, and the body of the barcode reader 16. The crimping space is used to fix the probe of the temperature sensor 13. The probe of the temperature sensor 13 extends into the crimping space and is elastically crimped by the elastic part 172 and the bending part 173, thereby directly abutting against the body of the barcode reader 16, thus improving the accuracy of temperature detection. In this embodiment, the fixing part 171, the elastic part 172, and the bending part 173 are integrally formed and are metal parts, such as stainless steel or copper and their alloys.

[0052] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A refrigeration mechanism, characterized in that, include: A refrigeration assembly, which includes opposing cold and hot ends; The first heat-conducting plate has its first surface attached to the cold end surface of the refrigeration component; The heat dissipation mechanism includes: a second heat-conducting plate, fins, a fan, and a first housing. The first surface of the second heat-conducting plate is attached to the hot end surface of the cooling component. There are multiple fins with gaps between adjacent fins. The multiple fins are connected to the second surface of the second heat-conducting plate. The fan is disposed at the end of the fins. The first housing covers the second surface of the second heat-conducting plate. The first housing has an air duct opening that connects the fan and the gap space.

2. A refrigeration mechanism according to claim 1, characterized in that: The cooling component is a semiconductor cooling component.

3. A refrigeration mechanism according to claim 2, characterized in that: The second heat-conducting plate has a slot, and the fins are inserted into the second heat-conducting plate through the slot; the plurality of fins extend along the first direction, and the planes on which the plurality of fins are located are parallel and perpendicular to the plane on which the second heat-conducting plate is located.

4. A refrigeration mechanism according to claim 1, characterized in that: The air duct opening includes: a first air duct opening respectively opened on both sides of the first housing along a first direction, and the two ends of the gap space are respectively connected to the outside through exhaust vents.

5. A refrigeration mechanism according to claim 4, characterized in that: The air duct also includes a second air duct opening at the end of the first housing. The second air duct opening is connected to the air inlet side of the fan, and the gap space is connected to the air outlet side of the fan. The second air duct opening is provided with a filter screen.

6. A refrigeration mechanism according to claim 4, characterized in that: The first shell and the second heat-conducting plate enclose a heat dissipation space. The first air duct and the second air duct are both connected to the heat dissipation space. The second heat-conducting plate, fins and fan are all located within the heat dissipation space.

7. A refrigeration mechanism according to claim 1, characterized in that: The cold end cover of the refrigeration component is provided with a second housing. The second housing and the refrigeration component enclose a refrigeration space. The refrigeration space is used to prevent the workpiece to be refrigerated. The refrigeration space is attached to the second side of the first heat-conducting plate. The second housing has a window corresponding to the workpiece to be refrigerated.

8. A refrigeration mechanism according to claim 7, characterized in that: The second housing is provided with a power interface, and a temperature sensor is provided in the cooling space. The temperature sensor is electrically connected to the cooling component, and both the temperature sensor and the cooling component are electrically connected to the power interface.

9. A barcode reader, characterized in that, include: A refrigeration mechanism as described in any one of claims 1-8; The barcode reader body is attached to the second side of the first heat-conducting plate.

10. A barcode reader according to claim 9, characterized in that, The barcode reader body is fixedly connected to a crimping member, which includes a fixed part, an elastic part, and a bending part connected in sequence. The fixed part is fixedly connected to the barcode reader body. The elastic part is inclined from the fixed part away from the barcode reader body. The bending part is inclined from the end of the elastic part towards the barcode reader body. A crimping space is enclosed between the bending part, the elastic part, and the barcode reader body. The crimping space is used to fix the probe of the temperature sensor.

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