Sensor fixing device and grain cooling unit

Abstract

The invention provides a sensor fixing device and a grain cooling unit, the sensor fixing device is used for installing a plurality of sensor bodies on an evaporator, the sensor fixing device comprises a first end plate and a second end plate, the first end plate and the second end plate are respectively arranged on two sides of the evaporator; and the at least one mounting rod is detachably mounted between the first end plate and the second end plate through a fixing piece, and a plurality of mounting pieces are arranged on the mounting rod in the axis direction of the mounting rod and used for fixedly mounting the plurality of sensor bodies on the mounting rod respectively. Under the cooperation of the first end plate and the second end plate, at least one mounting rod can be erected at the air port of the evaporator, and the plurality of sensor bodies fixed on the mounting rod are arranged along the width direction of the evaporator to form a distributed monitoring structure, so that the surface temperature distribution difference of the evaporator is captured in a large range; local frosting missing detection or false triggering of defrosting action is avoided, and the temperature control precision and the system energy efficiency are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of grain cooling unit technology, and more particularly to a sensor fixing device and a grain cooling unit. Background Technology

[0002] Grain cooling units are key equipment for modern grain depots to achieve the goals of green grain storage and scientific grain preservation. Their core function is to precisely cool and regulate the humidity of the air, generate air that meets the specific storage requirements of grains, and send it into the grain silo, thereby effectively inhibiting biological activity in the grain pile, delaying the deterioration of grain quality, and achieving the purpose of low-temperature grain storage.

[0003] In the refrigeration cycle of grain cooling units, the evaporator is the core component for air cooling. To prevent the evaporator surface temperature from becoming too low, leading to frost or even ice formation and severely hindering airflow, existing technologies generally use temperature sensors for monitoring and control. By placing a temperature sensor at a certain location on the evaporator, when the temperature detected by the sensor approaches the freezing point (e.g., reaching approximately 2°C), the control system triggers anti-frost measures, such as increasing the evaporator fan airflow, reducing the compressor operating frequency, or using a fixed-frequency compressor system. However, evaporators typically have a large heat exchange area, and the temperature and velocity of air flowing through different areas may vary. Relying solely on a temperature sensor at a single location cannot comprehensively reflect the temperature distribution across the entire evaporator surface, making it prone to malfunctions or missed detections. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a sensor fixing device and a grain cooling unit, which solves the problem that existing grain cooling units rely solely on a single temperature sensor for evaporator detection, failing to comprehensively reflect the temperature distribution across the entire evaporator surface and easily leading to malfunctions or missed detections.

[0005] On one hand, according to an embodiment of the present invention, a sensor fixing device is used to mount a plurality of sensor bodies to an evaporator, comprising:

[0006] The first end plate and the second end plate are respectively located on both sides of the evaporator;

[0007] At least one mounting rod is provided, which is detachably mounted between the first end plate and the second end plate by means of fasteners, and the mounting rod is provided with a plurality of mounting parts along its axial direction, which are used to fix a plurality of sensor bodies to the mounting rod.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] With the cooperation of the first and second end plates, at least one mounting rod can be erected at the evaporator vent. Several sensor bodies fixed on the mounting rods are arranged along the width of the evaporator to form a distributed monitoring structure. This structure can capture the temperature distribution differences on the evaporator surface over a wide range, avoiding missed detections due to localized frost or false triggering of defrosting actions, thus significantly improving temperature control accuracy and system energy efficiency. At the same time, with the help of the fixing components, multiple mounting rods can be installed as needed to achieve multi-point monitoring. The mounting components also ensure the stability of the sensor bodies on the mounting rods, guaranteeing the long-term stability of the sensor bodies in high-speed airflow environments.

[0010] Preferably, the fixing component includes an end cap and a limiting block fixedly disposed at the end of the mounting rod. Both the first end plate and the second end plate have several through holes. The mounting rod passes through two corresponding through holes, and the limiting block abuts against the first end plate or the second end plate. The end cap is snapped onto the other end of the mounting rod and abuts against the second end plate or the first end plate.

[0011] Preferably, the end cap is provided with two elastic blocks along its axial direction, and each elastic block is provided with a locking pin. The end of the mounting rod that connects to the end cap has two locking holes, and the two locking pins are respectively engaged in the two locking holes.

[0012] Preferably, the end cap, the limiting block, the first end plate, and the second end plate each have a corresponding mounting hole.

[0013] Preferably, the mounting component includes a mounting base on the mounting rod and a retaining ring on the mounting base, with the sensor body snapped into the retaining ring.

[0014] Preferably, the mounting component further includes a limiting tube disposed on the mounting rod, one end of which extends into the interior of the mounting rod, and the wires of the sensor body pass through the limiting tube and exit the end of the mounting rod.

[0015] Preferably, a limiting cover is fitted onto the end of the limiting tube away from the mounting rod, the wires of the sensor body are passed through the limiting cover, the limiting cover is provided with a fixing seat, the fixing seat is provided with an elastic pressure plate, and the elastic pressure plate presses on the wires of the sensor body.

[0016] Preferably, the end of the limiting tube away from the mounting rod has a threaded section, and the limiting cover is threadedly connected to the threaded section.

[0017] Preferably, both the first end plate and the second end plate have assembly holes.

[0018] On the other hand, according to an embodiment of the present invention, a grain cooling unit includes a sensor mounting device. Attached Figure Description

[0019] Figure 1This is a three-dimensional structural diagram of the first end plate, the second end plate, and the mounting rod assembled in the evaporator in an embodiment of the present invention.

[0020] Figure 2 This is a three-dimensional structural diagram of the mounting rod being assembled between the first end plate and the second end plate in an embodiment of the present invention.

[0021] Figure 3 This is an exploded structural diagram of the end cap, second end plate, and mounting rod in an embodiment of the present invention.

[0022] Figure 4 This is an exploded structural diagram of the sensor, limiting cover, and fiber tube in an embodiment of the present invention.

[0023] Figure 5 This is a three-dimensional structural diagram of the fixing seat assembled to the limiting cover in an embodiment of the present invention.

[0024] Figure 6 This is a three-dimensional structural diagram of the end cap in an embodiment of the present invention.

[0025] In the above attached figures:

[0026] 1. Evaporator;

[0027] 2. First end plate; 201. Through hole;

[0028] 3. Second end plate; 301. Assembly hole;

[0029] 4. Mounting rod; 401. Limiting tube; 402. Mounting base; 403. Threaded section; 404. Limiting block; 405. Mounting hole; 406. Snap ring;

[0030] 5. End cap; 501. Elastic block; 502. Locking pin; 503. Locking hole;

[0031] 6. Limiting cover; 601. Fixing base; 602. Elastic pressure plate;

[0032] 7. Sensor body; 701. Wire. Detailed Implementation

[0033] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0034] In existing technologies, the evaporator 1 of a grain cooling unit relies solely on a temperature sensor at a single location for judgment, which cannot comprehensively reflect the temperature distribution across the entire surface of the evaporator 1, making it prone to malfunctions or missed detections. Based on the shortcomings of existing technologies, this invention proposes a sensor fixing device for mounting several sensor bodies 7 onto the evaporator 1, comprising:

[0035] The first end plate 2 and the second end plate 3 are respectively disposed on both sides of the evaporator 1;

[0036] At least one mounting rod 4 is detachably mounted between the first end plate 2 and the second end plate 3 by means of fasteners, and the mounting rod 4 is provided with a plurality of mounting parts along its axial direction, which are used to fix a plurality of sensor bodies 7 to the mounting rod 4.

[0037] In embodiments of the present invention, such as Figure 1 and Figure 2 As shown, the overall frame of the sensor fixing device consists of a first end plate 2, a second end plate 3, and at least one mounting rod 4. To form a monitoring network, three mounting rods 4 are preferred. The first end plate 2 and the second end plate 3 are fixedly installed on both sides of the air outlet of the evaporator 1, respectively. The fixing method can be bolt connection or welding. Then, the three mounting rods 4 are respectively set along the height direction of the evaporator 1, so that the three mounting rods 4 are located at the upper, middle, and lower positions of the evaporator 1, respectively. Finally, multiple sensor bodies 7 are installed on the mounting rods 4, and the several sensor bodies 7 fixed on the mounting rods 4 are arranged along the width direction of the evaporator 1 to form a distributed monitoring structure. This allows for the capture of temperature distribution differences on the surface of the evaporator 1 over a wide range, avoiding missed detection of local frost or false triggering of defrosting action, and significantly improving temperature control accuracy and system energy efficiency.

[0038] Secondly, the fastener is used to assemble the mounting rod 4 between the first end plate 2 and the second end plate 3. With the fastener's assistance, multiple mounting rods 4 can be installed as needed to achieve multi-point monitoring. Simultaneously, the fastener also secures the sensor body 7 to the mounting rod 4, ensuring the stability of the sensor body 7 on the mounting rod 4 and guaranteeing its long-term stability in high-speed airflow environments. The fastener can be a bolt or pin to facilitate the installation and removal of the mounting rod 4, while the mounting component can be a bolt or clamp to secure the sensor body 7.

[0039] Based on the above, the structure of the fastener is optimized, such as... Figure 3 and Figure 4As shown, the fastener includes an end cap 5 and a limiting block 404 fixedly disposed at the end of the mounting rod 4. Both the first end plate 2 and the second end plate 3 have several through holes 201. The mounting rod 4 passes through two corresponding through holes 201, and the limiting block 404 abuts against the first end plate 2 or the second end plate 3. The end cap 5 is snapped onto the other end of the mounting rod 4 and abuts against the second end plate 3 or the first end plate 2. To facilitate the assembly of the mounting rod 4 between the first end plate 2 and the second end plate 3, the through holes 201 on the end plates define the installation position and direction of the mounting rod 4. The through holes 201 on the first end plate 2 and the second end plate 3 correspond one-to-one, and the limiting block 404 provides rigid positioning for the mounting rod 4. After the mounting rod 4 passes through the first end plate 2 and the second end plate 3 in sequence, the limiting block 404 will directly abut against the side of the first end plate 2 to prevent the mounting rod 4 from moving. Then, the end cap 5 is installed on the other end of the mounting rod 4 by snap-fit ​​and abuts against the side of the second end plate 3 to prevent the mounting rod 4 from moving. By clamping the end cap 5 and the limiting block 404, the mounting rod 4 can be quickly and firmly locked between the first end plate 2 and the second end plate 3 to form a rigid frame structure. Faced with the strong airflow impact inside the evaporator 1, the mounting rod 4 will not undergo axial displacement or loosening, thus ensuring the stable position of the sensor body 7 fixed on the mounting rod 4.

[0040] Specifically, to prevent the end cap 5 from accidentally falling off, such as Figure 3 and Figure 6 As shown, the end cap 5 has two elastic blocks 501 along its axial direction, and each elastic block 501 has a locking pin 502. The end of the mounting rod 4 connected to the end cap 5 has two locking holes 503, and the two locking pins 502 are respectively engaged in the two locking holes 503. When installing the end cap 5, by pressing the two elastic blocks 501 of the end cap 5, the two elastic blocks 501 are brought closer together and extended into the mounting rod 4. While pushing the end cap 5, the two elastic blocks 501 move inside the mounting rod 4. When the locking pins 502 of the elastic blocks 501 correspond to the locking holes 503 on the mounting rod 4, the locking pins 502 are engaged in the locking holes 503 under the action of the elastic blocks 501 restoring their deformation, thus quickly fixing the end cap 5. When removing the end cap 5, simply press the locking pins 502 to disengage them from the locking holes 503 and pull out the end cap 5. No special tools are needed, and the installation or removal of the end cap 5 can be completed by hand.

[0041] Moreover, such as Figure 4 and Figure 6 As shown, the end cap 5, the limiting block 404, the first end plate 2, and the second end plate 3 are all provided with corresponding mounting holes 405. Bolts can be used to pass through the end cap 5 and the corresponding mounting holes 405 in sequence, as well as through the limiting block 404 and the corresponding mounting holes 405, to achieve the fixed installation of the end cap 5 and the limiting block 404, thereby further ensuring stability.

[0042] Specifically, the structure of the mounting components is optimized, such as... Figure 4 As shown, the mounting component includes a mounting base 402 on the mounting rod 4 and a retaining ring 406 on the mounting base 402. The sensor body 7 is snapped into the retaining ring 406. The mounting base 402 is fixedly mounted on the mounting rod 4. The retaining ring 406 is an elastic structure with a C-shaped open ring, which can generate radial contraction force. After the sensor body 7 is tightly clamped in the mounting base 402, a physical hard constraint is formed, realizing the rapid installation of the sensor body 7. By aligning the sensor body 7 with the C-shaped opening of the retaining ring 406 and pressing the sensor body 7, it can be quickly installed into the retaining ring 406 without the need for professional tools, and provides stable installation.

[0043] After installing multiple sensor bodies 7, their wires 701 will be dragged and will sway under the influence of airflow, therefore, Figure 4 As shown, the mounting component also includes a limiting tube 401 located on the mounting rod 4. One end of the limiting tube 401 extends into the interior of the mounting rod 4, and the wire 701 of the sensor body 7 passes through the limiting tube 401 and exits from the end of the mounting rod 4. When the sensor body 7 is clamped and installed by the retaining ring 406, the limiting tube 401 completely encloses the wire 701, which can isolate the direct impact of high-speed airflow and avoid the whiplash effect of the wire 701. Moreover, after the wire 701 is limited by the limiting tube 401, the wire 701 is in a free state within the limiting tube 401, reducing the bending fatigue of the wire 701.

[0044] Meanwhile, to prevent the connection point between the wire 701 and the sensor body 7 from bending and swaying under the influence of airflow, such as Figure 5 As shown, a limiting cover 6 is fitted onto the end of the limiting tube 401 away from the mounting rod 4. The wire 701 of the sensor body 7 passes through the limiting cover 6. The limiting cover 6 is provided with a fixing seat 601. The fixing seat 601 is provided with an elastic pressure plate 602. The elastic pressure plate 602 presses on the wire 701 of the sensor body 7. The pressing force of the elastic pressure plate 602 can firmly fix the wire 701 on the fixing seat 601, further preventing the wire 701 from shaking, ensuring the stability between the wire 701 and the sensor body 7, and preventing damage.

[0045] Moreover, such as Figure 4 As shown, the end of the limiting tube 401 away from the mounting rod 4 has a threaded section 403. The limiting cover 6 is threadedly connected to the threaded section 403. When the elastic pressure plate 602 loses its elasticity, the limiting cover 6 can be easily disassembled and replaced.

[0046] Specifically, such as Figure 1As shown, both the first end plate 2 and the second end plate 3 are provided with mounting holes 301. The mounting holes 301 can be opened at the upper and lower ends and the left and right sides of the first end plate 2 and the second end plate 3. Bolts are used to pass through the mounting holes 301 and connect to the frame of the evaporator 1. When the mounting rod 4 is impacted by the airflow, the first end plate 2 and the second end plate 3 can distribute the wind load transmitted by the mounting rod 4 to the frame of the evaporator 1, avoid stress concentration, and ensure the stability of the overall structure.

[0047] This invention also proposes a grain cooling unit, including the sensor fixing device described above. The specific structure of the fixing device is as described in the above embodiments. Since this grain cooling unit adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A sensor fixing device for mounting a plurality of sensor bodies (7) on an evaporator (1), characterized in that, include: The first end plate (2) and the second end plate (3) are respectively disposed on both sides of the evaporator (1); At least one mounting rod (4) is detachably mounted between the first end plate (2) and the second end plate (3) by means of a fastener, and the mounting rod (4) is provided with a plurality of mounting parts along its axial direction, which are respectively used to fix a plurality of the sensor bodies (7) to the mounting rod (4).

2. The sensor fixing device according to claim 1, characterized in that, The fastener includes an end cap (5) and a limiting block (404) fixedly disposed at the end of the mounting rod (4). The first end plate (2) and the second end plate (3) are each provided with several through holes (201). The mounting rod (4) passes through two corresponding through holes (201), and the limiting block (404) abuts against the first end plate (2) or the second end plate (3). The end cap (5) is snapped onto the other end of the mounting rod (4) and abuts against the second end plate (3) or the first end plate (2).

3. The sensor fixing device according to claim 2, characterized in that, The end cap (5) is provided with two elastic blocks (501) along its axial direction. Both elastic blocks (501) are provided with locking pins (502). The end of the mounting rod (4) connected to the end cap (5) has two locking holes (503). The two locking pins (502) are respectively locked into the two locking holes (503).

4. A sensor fixing device according to claim 2, characterized in that, The end cap (5), the limiting block (404), the first end plate (2), and the second end plate (3) are all provided with corresponding mounting holes (405).

5. A sensor fixing device according to claim 1, characterized in that, The mounting component includes a mounting base (402) provided on the mounting rod (4) and a retaining ring (406) provided on the mounting base (402), and the sensor body (7) is snapped into the retaining ring (406).

6. A sensor fixing device according to claim 5, characterized in that, The mounting component also includes a limiting tube (401) disposed on the mounting rod (4), one end of the limiting tube (401) extending into the interior of the mounting rod (4), and the wire (701) of the sensor body (7) passing through the limiting tube (401) and extending out of the end of the mounting rod (4).

7. A sensor fixing device according to claim 6, characterized in that, The limiting tube (401) is fitted with a limiting cover (6) at one end away from the mounting rod (4). The wire (701) of the sensor body (7) passes through the limiting cover (6). The limiting cover (6) is provided with a fixing seat (601). The fixing seat (601) is provided with an elastic pressure plate (602). The elastic pressure plate (602) presses on the wire (701) of the sensor body (7).

8. A sensor fixing device according to claim 7, characterized in that, The limiting tube (401) has a threaded section (403) at one end away from the mounting rod (4), and the limiting cover (6) is threadedly connected to the threaded section (403).

9. A sensor fixing device according to claim 1, characterized in that, Both the first end plate (2) and the second end plate (3) are provided with assembly holes (301).

10. A grain cooling unit, characterized in that, Includes a sensor fixing device according to any one of claims 1-9.

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