Refrigeration unit convenient to repair

By installing a detachable inner and outer air intake grille structure at the air inlet of the refrigeration unit, the problem of difficult filter removal is solved, enabling quick replacement and cleaning, improving maintenance efficiency, reducing maintenance costs, and ensuring stable operation of the equipment.

CN224398136UActive Publication Date: 2026-06-23SHANDONG YIFANGYUN COLD & HOT ENG TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG YIFANGYUN COLD & HOT ENG TECH CO LTD
Filing Date
2025-06-24
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

The existing air inlet filter structure of the refrigeration unit cannot be disassembled individually or the disassembly process is cumbersome, resulting in low maintenance efficiency. Furthermore, the long-term accumulation of dirt affects the stability of equipment operation and increases maintenance costs.

Method used

A detachable inner and outer air intake grille structure is installed at the air inlet of the refrigeration unit. The filter screen is clamped between the inner and outer air intake grilles. The filter screen can be quickly replaced or cleaned by rotating the outer air intake grille, and it is stably fixed by the snap-fit ​​groove and connector.

Benefits of technology

It improves the efficiency of filter screen disassembly and cleaning, reduces maintenance time, lowers labor intensity and maintenance costs, and ensures the continuous and stable operation of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a refrigerating unit convenient to maintain, including refrigerating machine body, the both sides of refrigerating machine body are equipped with air inlet, air inlet sets up along the width direction of refrigerating machine body, is equipped with the inside air inlet grille with its adaptation on air inlet, the upper portion of air inlet grille is hinged connection with the upper portion of air inlet, the lower portion of air inlet grille can rotate to the outside, the outside of inside air inlet grille is equipped with the detachable outside air inlet grille, and the filter screen is arranged between inside air inlet grille and outside air inlet grille, outside air inlet grille is detachably connected with the shell of refrigerating machine body through connecting piece, the utility model discloses setting up the outside rotating inside air inlet grille at air inlet respectively, the outside of inside air inlet grille is equipped with filter screen and outside air inlet grille in proper order, and filter screen is pressed and clamped between inside air inlet grille and outside air inlet grille, so that when replacing or cleaning filter screen, only need to detach the connecting piece, and outside air inlet grille rotates to the outside, can filter screen be detached, greatly improve the dismounting efficiency of filter screen.
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Description

Technical Field

[0001] This utility model relates to the field of refrigeration technology, specifically to a refrigeration unit that is easy to maintain. Background Technology

[0002] During the operation of a refrigeration unit, air inlets are typically located on both sides of the casing to introduce cooling airflow. To ensure the cleanliness of the heat exchangers and core components inside the unit, filters are generally installed at the air inlets to prevent dust, lint, and other impurities from entering the casing cavity, thus avoiding reduced heat dissipation efficiency or equipment malfunctions caused by scale buildup.

[0003] However, most existing refrigeration units use a fixed design for their air inlet filters. The filter is welded to the housing frame or integrally injection molded, making it impossible to disassemble separately. When the filter is heavily soiled, users can only perform a rough cleaning by using a high-pressure air gun to blow it back, which is insufficient to completely remove stubborn dirt embedded in the mesh. Long-term accumulation will increase air resistance and raise cooling energy consumption.

[0004] While some models support filter removal, this requires using screwdrivers, wrenches, and other tools to loosen multiple bolts, clips, or screws one by one, making the process cumbersome and time-consuming. In locations with multiple refrigeration units (such as data centers, factories, and cold storage facilities), maintenance personnel must frequently repeat disassembly, cleaning, and reinstallation steps, resulting in high labor intensity, low maintenance efficiency, and potentially extended equipment downtime, affecting the system's continuous operational stability. Furthermore, fasteners are prone to stripping, loss, or damage during repeated disassembly and reassembly, further increasing maintenance costs. Utility Model Content

[0005] To address the technical problems existing in the background art, this utility model provides a refrigeration unit that is easy to maintain.

[0006] The technical solution of this utility model is as follows:

[0007] A refrigeration unit that is easy to maintain includes a refrigeration unit body. The refrigeration unit body has air inlets on opposite sides. The air inlets are arranged along the width direction of the refrigeration unit body. The air inlets are provided with an inner air inlet grille that is adapted to them. The upper part of the air inlet grille is hinged to the upper part of the air inlet. The lower part of the air inlet grille can rotate outward.

[0008] The inner air intake grille is equipped with a detachable outer air intake grille. The air intake holes of the inner air intake grille and the outer air intake grille are set accordingly, and a filter screen is sandwiched between the inner air intake grille and the outer air intake grille.

[0009] The external air intake grille is detachably connected to the housing of the refrigeration unit via a connector.

[0010] The connection structure between the outer air intake grille and the inner air intake grille is such that the upper end of the outer air intake grille is lower than the upper end of the inner air intake grille, and the upper sides of the outer air intake grille are hinged to the upper outer side of the inner air intake grille through the second hinge, which makes it easy to quickly open the outer air intake grille and remove the filter screen for cleaning or replacement.

[0011] The specific structure of the aforementioned internal air intake grille is as follows: the internal air intake grille includes an air intake plate and multiple air intake holes arranged in a matrix on the air intake plate. The air intake plate has a first snap-fit ​​groove located above the uppermost air intake hole. The first snap-fit ​​groove is arranged along the length direction of the air intake plate, and the upper part of the filter screen is located in the first snap-fit ​​groove.

[0012] To facilitate pressing the lower part of the filter screen, a second snap-fit ​​groove is provided at the bottom of the air inlet plate, located below the lowest air inlet hole. The second snap-fit ​​groove is set parallel to the first snap-fit ​​groove, and the lower part of the filter screen is located in the second snap-fit ​​groove.

[0013] To facilitate pressing the lower part of the filter screen, the upper surface of the second snap-fit ​​groove is set as an inclined surface, with the inclined surface tilted downwards from the outside to the inside. The lower part of the filter screen is placed in the second snap-fit ​​groove, and a structure for pressing the filter screen can be set in the second snap-fit ​​groove to fix the lower part of the filter screen.

[0014] To facilitate pressing the upper part of the filter screen against the upper part of the inner air inlet grille when rotating the outer air inlet grille, the upper part of the outer air inlet grille is provided with a first snap-fit ​​strip that matches the first snap-fit ​​groove.

[0015] To facilitate rotating the outer air intake grille, the lower part of the filter screen is gradually pressed against the inner air intake grille by the outer air intake grille. The lower part of the outer air intake grille is provided with a second snap-fit ​​strip that matches the second snap-fit ​​groove. When the second snap-fit ​​strip approaches the second snap-fit ​​groove, it will gradually press the filter screen located in the second snap-fit ​​groove.

[0016] Preferably, the mesh size of the filter screen is smaller than that of the air inlet.

[0017] Regarding the specific structure and location of the connector, the connector includes an L-shaped plate and fastening bolts. The upper part of the L-shaped plate is connected to the lower end of the external air intake grille, and the lower part of the L-shaped plate abuts against the housing of the refrigeration unit. The fastening bolts pass through the L-shaped plate and are connected to the housing.

[0018] To facilitate the installation of the filter screen, an installation strip is provided on the upper part of the filter screen along its length. The length and width of the installation strip are adapted to the first snap-fit ​​groove, and the sum of the thicknesses of the installation strip and the first snap-fit ​​strip is consistent with the depth of the first snap-fit ​​groove.

[0019] The beneficial effects of this utility model are as follows:

[0020] An inner air intake grille that can rotate outward is installed at the air inlet of the refrigeration unit. A filter screen and an outer air intake grille are arranged in sequence on the outside of the inner air intake grille. The filter screen is pressed and clamped between the inner air intake grille and the outer air intake grille. When replacing or cleaning the filter screen, it is only necessary to disassemble the connecting piece and rotate the outer air intake grille outward to remove the filter screen, which greatly improves the removal efficiency of the filter screen and improves the maintenance efficiency.

[0021] The filter screen is directly clamped between the inner and outer air intake grilles. The filter screen is made of soft material. To facilitate the installation of the filter screen, an installation strip is provided on the filter screen that can be placed in the first snap-fit ​​groove for pre-installation of the filter screen. By rotating the outer air intake grille downwards, the first snap-fit ​​strip presses the installation strip into the first snap-fit ​​groove, thus fixing the upper part of the filter screen. Continuing to rotate the outer air intake grille, the second snap-fit ​​strip on it gradually presses the filter screen into the second snap-fit ​​groove along the inclined surface. The outer air intake grille is then fixed to the housing of the refrigeration unit through the connector.

[0022] The inner air intake grille can rotate outwards, ensuring that the air intake is not obstructed. Through the air intakes on both sides, most of the internal components of the refrigeration unit can be exposed, making it easier for staff to repair the internal components of the refrigeration unit without disassembling the refrigeration unit's casing, thus greatly improving maintenance efficiency. Attached Figure Description

[0023] In the attached diagram:

[0024] Figure 1 This is a structural diagram;

[0025] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0026] Figure 3 for Figure 1 Enlarged structural diagram at point B;

[0027] Figure 4 This is a top view;

[0028] Figure 5 for Figure 4 A schematic diagram of the AA-direction cross-section structure;

[0029] Figure 6 for Figure 5 Enlarged structural diagram at point C;

[0030] Figure 7 for Figure 5 Enlarged structural diagram at point D;

[0031] Figure 8 This is a schematic diagram of the inner and outer air intake grilles.

[0032] Figure 9 for Figure 8 Enlarged structural diagram at point E;

[0033] The components represented by the various reference numerals in the diagram are:

[0034] 1. Refrigeration unit body; 2. Inner air inlet grille; 201. Air inlet plate; 2011. First snap-fit ​​groove; 2012. Second snap-fit ​​groove; 20121. Inclined surface; 202. Air inlet hole; 3. Outer air inlet grille; 4. Filter screen; 5. First hinge; 6. Second hinge; 601. Rotating shaft; 602. Rotating seat; 7. First snap-fit ​​strip; 8. Second snap-fit ​​strip; 9. L-shaped plate; 10. Fastening bolt; 11. Mounting strip. Detailed Implementation

[0035] See Figure 1 As shown, a refrigeration unit that is easy to maintain includes a refrigeration unit body 1. The refrigeration unit body 1 has air inlets on opposite sides. The air inlets are arranged along the width direction of the refrigeration unit body 1. An inner air inlet grille 2 adapted to the air inlet is provided on the air inlet. The upper part of the air inlet grille is hinged to the upper part of the air inlet through a first hinge member 5. The lower part of the air inlet grille can rotate outward.

[0036] The inner air intake grille 2 is provided with a detachable outer air intake grille 3. The air intake holes 202 of the inner air intake grille 2 and the outer air intake grille 3 are set accordingly to facilitate air intake. A filter screen 4 is sandwiched between the inner air intake grille 2 and the outer air intake grille 3. The mesh size of the filter screen 4 is smaller than that of the air intake hole 202. The filter screen 4 can block dust, lint and other impurities from entering the inner cavity of the housing, avoiding the decrease in heat dissipation efficiency or equipment failure caused by the accumulation of dirt.

[0037] The connection structure between the outer air intake grille 3 and the inner air intake grille 2 is such that the upper end of the outer air intake grille 3 is lower than the upper end of the inner air intake grille 2, and the upper sides of the outer air intake grille 3 are hinged to the upper outer side of the inner air intake grille 2 through the second hinge 6, which makes it easy to quickly open the outer air intake grille 3 and remove the filter screen 4 for cleaning or replacement.

[0038] The first hinge 5 can be a hinge, etc., and the second hinge 6 is a pivot 601. The pivot 601 is located on opposite sides of the upper part of the outer air intake grille 3. The two pivots 601 are on the same horizontal plane and are arranged along the width direction of the refrigerator body 1. The inner air intake grille 2 has rotating seats 602 on both sides that are adapted to the pivots 601. The pivots 601 and rotating seats 602 are rotatably connected. The axes of the first hinge 5 and the second hinge 6 are respectively arranged in the horizontal direction, that is, consistent with the width direction of the refrigerator body 1. The first hinge 5 is located above the second hinge 6, and the axes of the first hinge 5 and the second hinge 6 are parallel. This facilitates the opening of the inner air intake grille 2, increasing the maintenance space and allowing for internal maintenance of the refrigerator body 1.

[0039] The inner air intake grille 2 includes an air intake plate 201 and multiple air intake holes 202 arranged in a matrix on the air intake plate 201. The filter screen 4 is directly clamped between the inner air intake grille 2 and the outer air intake grille 3. The filter screen 4 is made of soft material. To facilitate the installation of the filter screen 4, the air intake plate 201 has a first retaining groove 2011 located above the uppermost air intake hole 202. The first retaining groove 2011 is arranged along the length of the air intake plate 201, and the upper part of the filter screen 4 is located within the first retaining groove 2011. To facilitate pressing the upper part of the filter screen 4 against the upper part of the inner air intake grille 2 when the outer air intake grille 3 is rotated, the upper part of the outer air intake grille 3 has a first retaining strip 7 adapted to the first retaining groove 2011. To facilitate the installation of the filter screen 4, an installation strip 11 is provided on the upper part of the filter screen 4 along its length. The length and width of the installation strip 11 are adapted to the first snap-fit ​​groove 2011, and the sum of the thicknesses of the installation strip 11 and the first snap-fit ​​strip 7 is consistent with the depth of the first snap-fit ​​groove 2011.

[0040] To facilitate the clamping of the lower part of the filter screen 4, a second retaining groove 2012 is provided at the lower part of the air inlet plate 201, located below the lowest air inlet hole 202. The second retaining groove 2012 is arranged parallel to the first retaining groove 2011, and the lower part of the filter screen 4 is located within the second retaining groove 2012. To facilitate the clamping of the lower part of the filter screen 4, the upper end surface of the second retaining groove 2012 is set as an inclined surface 20121, which is inclined downward from the outside to the inside. The lower part of the filter screen 4 is placed within the second retaining groove 2012, and a structure for clamping the filter screen 4 can be provided within the second retaining groove 2012 to fix the lower part of the filter screen 4.

[0041] To facilitate the rotation of the outer air intake grille 3, which gradually presses the lower part of the filter screen 4 onto the inner air intake grille 2, the lower part of the outer air intake grille 3 is provided with a second retaining strip 8 that matches the second retaining groove 2012. When the second retaining strip 8 approaches the second retaining groove 2012, it gradually presses the filter screen 4 located in the second retaining groove 2012. Both the second retaining strip 8 and the first retaining strip 7 are located on the side of the outer air intake grille 3 closest to the inner air intake grille 2.

[0042] The external air intake grille 3 is detachably connected to the housing of the refrigerator body 1 via a connector. Regarding the specific structure and location of the connector, the connector includes an L-shaped plate 9 and a fastening bolt 10. The upper part of the L-shaped plate 9 is connected to the lower end of the external air intake grille 3, the lower part of the L-shaped plate 9 abuts against the housing of the refrigerator body 1, and the fastening bolt 10 passes through the L-shaped plate 9 and is connected to the housing.

Claims

1. A refrigeration unit facilitating maintenance, comprising a refrigeration unit body (1), the refrigeration unit body (1) being provided with air inlets on opposite sides, the air inlets being arranged along the width direction of the refrigeration unit body (1), characterized in that, The air inlet is provided with an inner air inlet grille (2) that is adapted to it. The upper part of the air inlet grille is hinged to the upper part of the air inlet, and the lower part of the air inlet grille can rotate outward. The inner air intake grille (2) is provided with a detachable outer air intake grille (3) on the outside. The air intake holes (202) of the inner air intake grille (2) and the outer air intake grille (3) are provided correspondingly. A filter screen (4) is sandwiched between the inner air intake grille (2) and the outer air intake grille (3). The external air intake grille (3) is detachably connected to the housing of the refrigeration unit body (1) via a connector.

2. The refrigeration unit of claim 1, wherein, The upper surface of the outer air intake grille (3) is lower than the upper surface of the inner air intake grille (2), and the upper sides of the outer air intake grille (3) are hinged to the upper outer side of the inner air intake grille (2) through the second hinge (6).

3. The refrigeration unit of claim 1, wherein, The inner air intake grille (2) includes an air intake plate (201) and a plurality of air intake holes (202) arranged in a matrix on the air intake plate (201). The air intake plate (201) has a first snap-fit ​​groove (2011) located above the uppermost air intake hole (202). The first snap-fit ​​groove (2011) is arranged along the length direction of the air intake plate (201), and the upper part of the filter screen (4) is located in the first snap-fit ​​groove (2011).

4. The refrigeration unit of claim 3, wherein, The lower part of the air inlet plate (201) is provided with a second snap-fit ​​groove (2012) located below the lowest air inlet hole (202). The second snap-fit ​​groove (2012) is arranged parallel to the first snap-fit ​​groove (2011), and the lower part of the filter screen (4) is located in the second snap-fit ​​groove (2012).

5. A refrigeration unit convenient for maintenance according to claim 4, characterized in that, The upper surface of the second snap-fit ​​groove (2012) is an inclined surface (20121), which is inclined downward from the outside to the inside.

6. A refrigeration unit convenient for maintenance according to claim 4, characterized in that, The upper part of the external air intake grille (3) is provided with a first snap-fit ​​strip (7) that is adapted to the first snap-fit ​​groove (2011).

7. A refrigeration unit convenient for maintenance according to claim 5, characterized in that, The lower part of the external air intake grille (3) is provided with a second snap-fit ​​strip (8) that is adapted to the second snap-fit ​​groove (2012).

8. The refrigeration unit of claim 1, wherein, The mesh size of the filter (4) is smaller than that of the air inlet (202).

9. The refrigeration unit of claim 1, wherein, The connector includes an L-shaped plate (9) and a fastening bolt (10). The upper part of the L-shaped plate (9) is connected to the lower end of the outer air intake grille (3), and the lower part of the L-shaped plate (9) abuts against the shell of the refrigerator body (1). The fastening bolt (10) passes through the L-shaped plate (9) and is connected to the shell.

10. The refrigeration unit of claim 6, wherein, The filter screen (4) has an installation strip (11) along its length on the upper part. The length and width of the installation strip (11) are adapted to the first snap-fit ​​groove (2011), and the sum of the thicknesses of the installation strip (11) and the first snap-fit ​​strip (7) is consistent with the depth of the first snap-fit ​​groove (2011).