Novel freezer

By using a horizontal top plate design and a cold air circulation system, the problems of uneven temperature, high energy consumption, and insufficient storage capacity of traditional freezers have been solved, resulting in more efficient cooling and a more aesthetically pleasing freezer design.

CN224151239UActive Publication Date: 2026-04-21FOSHAN LANYUN TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-29
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

Traditional freezers suffer from uneven temperature, high energy consumption, and insufficient storage capacity. In particular, the design of the inner liner top of air-cooled freezers affects both aesthetics and storage space.

Method used

The design features a horizontally extended top plate, which, combined with a centrifugal fan and evaporative heat exchanger, forms a cold air circulation channel. The inner tank structure is optimized, the number of air inlets and partitions are increased, duct foam components are used to reduce energy loss, and condensate collection components are installed.

Benefits of technology

It has increased the storage capacity and cooling efficiency of the freezer, improved temperature uniformity, reduced energy consumption, and enhanced the product's market competitiveness and lifespan.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of article refrigeration, storage and display, and provides a novel freezer which comprises a freezer body, the freezer body comprises a storage cavity, a plate body located at the top of the storage cavity and an evaporator fan module, the plate body comprises a top plate, the top plate is horizontally and flatly arranged and forms the inner top wall of the storage cavity, and an air inlet is formed in the top plate; the evaporator fan module comprises a heat exchange air duct, and a centrifugal fan and an evaporation heat exchanger which are arranged on the heat exchange air duct; the air suction end of the centrifugal fan corresponds to the air inlet, air in the storage cavity enters the heat exchange air duct through the input end of the heat exchange air duct under driving of the centrifugal fan and exchanges heat with the evaporation heat exchanger to form cold air, and the cold air enters the storage cavity along the output end of the heat exchange air duct. The plate body is designed to be the horizontally-extending top plate, the problem that the upper space is reduced due to the traditional inclined top face design is solved, and the storage capacity of the freezer is improved. And meanwhile, the top surface of the horizontally designed inner container is more attractive, and the market competitiveness of the product is improved.
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Description

Technical Field

[0001] This utility model relates to the technical field of refrigerated storage and display of items, specifically to a new type of freezer. Background Technology

[0002] Freezers, as common household and commercial appliances, are widely used in food refrigeration, pharmaceuticals, and wine storage. Traditional modern freezers typically employ either direct cooling or air-cooling methods. Direct-cooling freezers exchange heat directly between the evaporator and the storage chamber. While simple in structure, this can lead to uneven internal temperatures and frost buildup. Air-cooling freezers, on the other hand, use a fan to blow cold air into the freezer. Although this achieves better temperature uniformity, it is usually more complex in structure and consumes more energy.

[0003] In existing air-cooled freezer designs, the design of the inner liner's top surface has a significant impact on the freezer's overall performance and user experience. In traditional designs, the inner liner's top surface is often angled. This design reduces the upper space of the storage cavity, affecting the freezer's storage capacity. Furthermore, the angled top surface design is visually unappealing, reducing the product's market competitiveness. Utility Model Content

[0004] This utility model proposes a novel freezer design that uses a horizontally extending top panel, avoiding the reduced upper space problem caused by traditional sloping top designs and thus increasing the freezer's storage capacity. At the same time, the horizontally designed inner liner top surface is more aesthetically pleasing, enhancing the product's market competitiveness.

[0005] A novel freezer designed for this purpose includes a cabinet body, which includes a storage cavity, a plate located at the top of the storage cavity, and an evaporator fan module. The plate includes a top plate, which is horizontal and flat and forms the inner top wall of the storage cavity. The evaporator fan module is located on the top plate.

[0006] The top plate is provided with an air inlet facing downwards from the storage cavity;

[0007] The evaporator fan module includes a heat exchange duct with an air inlet and an air outlet, and a centrifugal fan and an evaporative heat exchanger installed on the heat exchange duct; the air inlet and air outlet of the heat exchange duct are both connected to the storage chamber.

[0008] The air inlet is located on the top panel;

[0009] The centrifugal fan's suction end is correspondingly set to the air inlet. Under the drive of the centrifugal fan, the gas in the storage chamber enters the heat exchange duct through the air inlet and exchanges heat with the evaporative heat exchanger to form cold air. The cold air enters the storage chamber along the air outlet.

[0010] The centrifugal fan and the evaporative heat exchanger are arranged at intervals along the front-to-back direction of the top plate.

[0011] The number of air inlets is several, and the several air inlets are arranged along the suction end of the centrifugal fan. The length of the arrangement of the several air inlets is greater than the length of the opening of the suction end of the centrifugal fan.

[0012] The centrifugal fan suction end and the top plate have an upper and lower gap L, which forms an air intake channel connecting the centrifugal fan suction end and the air inlet and increases the air intake volume.

[0013] A separator is provided between the centrifugal fan and the evaporative heat exchanger to separate the centrifugal fan and the evaporative heat exchanger.

[0014] A cold air inlet duct is provided between the storage chamber and the back of the cabinet, connecting the storage chamber. The cold air that has been heated by the evaporator heat exchanger returns to the storage chamber through the cold air inlet or the cold air inlet duct.

[0015] A separator is provided between the centrifugal fan and the evaporative heat exchanger to separate the centrifugal fan and the evaporative heat exchanger.

[0016] The top plate is provided with a partition plate to separate the air inlet and the air outlet, so that the gas in the storage chamber can enter through the air inlet under the action of the centrifugal fan, and the gas can flow completely through the heat exchange air duct before being output to the storage chamber through the air outlet.

[0017] The partition plate includes a transverse partition plate extending in the transverse direction of the top plate and a longitudinal partition plate extending in the longitudinal direction of the top plate. The transverse partition plate and the longitudinal partition plate are assembled into an L-shape.

[0018] The plate is provided with a lower mounting component for fixing and installing a centrifugal fan, and the lower mounting component is provided with a first opening groove corresponding to the air inlet of the centrifugal fan.

[0019] The plate is provided with a duct component that cooperates with a centrifugal fan. The duct component and the lower mounting component form a centrifugal duct. The duct component is provided with a second opening slot corresponding to the evaporative heat exchanger and the air outlet of the centrifugal fan.

[0020] The air duct component is provided with an arc-shaped air duct. The centrifugal fan draws gas from the storage chamber. The gas passes through the centrifugal fan and is output along the arc-shaped air duct and the second open slot, and exchanges heat through the evaporative heat exchanger.

[0021] The air duct component is a foam air duct component.

[0022] The transverse partition plate extends laterally along the side of the air duct component, and the longitudinal partition plate extends longitudinally along the side of the air duct component toward the evaporator heat exchanger. Both sides of the air duct component are provided with transverse partition plates and longitudinal partition plates. The transverse partition plate is located between the air inlet and the evaporator heat exchanger, and the longitudinal partition plate is located between the air duct component and the evaporator heat exchanger.

[0023] The plate body is provided with a water receiving part below the evaporative heat exchanger, and the water receiving part is provided with a water receiving trough for collecting condensate.

[0024] The water receiving component has a support member on its side for fixing it to the top plate, and the water receiving component has a drain outlet that connects to the drain connector.

[0025] The cabinet includes a support base for mounting the compressor and condenser, or the compressor and condenser are mounted on the panel.

[0026] The top panel is provided with a reinforcing plate extending downwards from the rear side of the cabinet body;

[0027] The plate body is provided with a protective top plate to protect the centrifugal fan and the evaporative heat exchanger;

[0028] The plate is provided with a lower mounting component, and the lower mounting component is provided with a connecting flange. The top of the storage cavity is provided with a vertically extending vertical plate on one side of the plate. The lower mounting component is fixed to the vertical plate by the connecting flange and suspended above the plate. The centrifugal fan is fixed to the lower mounting component so that an air intake channel connecting the centrifugal fan suction end and the air inlet is formed between the centrifugal fan and the plate.

[0029] One end of the lower mounting component is provided with an extension extending toward the evaporative heat exchanger. When the lower mounting component is suspended, the extension forms a separator separating the centrifugal fan and the evaporative heat exchanger.

[0030] The lower mounting component is provided with an air duct component above it, and an upper mounting component is provided on top of the air duct component. The upper mounting component and the lower mounting component work together to fix the centrifugal fan. The air duct component is provided with a clearance at the connection between the centrifugal fan and the upper mounting component. One end of the upper mounting component extends toward the evaporative heat exchanger, and a heat exchange air duct is formed between the lower mounting component, the air duct component, and the part of the upper mounting component that extends toward the evaporative heat exchanger.

[0031] The beneficial technical effects of this utility model are as follows:

[0032] By designing the top panel as a horizontally extending panel, the problem of reduced upper space caused by traditional sloping top designs is avoided, thus increasing the freezer's storage capacity. At the same time, the horizontally designed top surface of the inner liner is more aesthetically pleasing, enhancing the product's market competitiveness.

[0033] The gas in the storage chamber returns to the storage chamber through the centrifugal fan, evaporative heat exchanger and cold air inlet duct to form a cold air internal circulation channel. Attached Figure Description

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0035] Figure 1This is a three-dimensional structural diagram of a novel freezer according to an embodiment of the present invention.

[0036] Figure 2 This is a three-dimensional cross-sectional structural diagram of a novel freezer according to an embodiment of the present invention.

[0037] Figure 3 This is a three-dimensional cross-sectional structural diagram of the top of a novel freezer according to an embodiment of the present invention.

[0038] Figure 4 This is a three-dimensional structural diagram of the plate body according to an embodiment of the present utility model.

[0039] Figure 5 This is a three-dimensional structural diagram of an air duct component according to an embodiment of the present invention.

[0040] Figure 6 This is a three-dimensional structural diagram of the lower mounting component according to an embodiment of the present invention.

[0041] Figure 7 This is a three-dimensional structural diagram of a water receiving component according to an embodiment of the present invention. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. In order to make the above-mentioned objects, features and advantages of the present application more apparent and understandable, many specific details are set forth in the following description in order to provide a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0043] See Figures 1-7 A novel freezer includes a cabinet body 1, the cabinet body 1 including a storage cavity 4, a plate 2 located on top of the storage cavity 4 and an evaporator fan module, the plate 2 including a top plate 3, the top plate 3 being horizontal and flat and forming the inner top wall of the storage cavity 4, and the evaporator fan module being located on the top plate 3.

[0044] The evaporator fan module includes a heat exchange duct with an air inlet 5 and an air outlet 27, and a centrifugal fan 6 and an evaporative heat exchanger 7 installed on the heat exchange duct; the air inlet 5 and the air outlet 27 of the heat exchange duct are both connected to the storage chamber 4.

[0045] The air inlet 5 is located on the top plate 3;

[0046] The centrifugal fan 6 is positioned with its suction end corresponding to the air inlet 5. The gas in the storage chamber 4 is driven by the centrifugal fan 6 to enter the heat exchange duct through the air inlet 5 and exchange heat with the evaporator heat exchanger 7 to form cold air. The cold air enters the storage chamber 4 along the air outlet 27.

[0047] By designing panel 2 as a horizontally extending top panel 3, the problem of reduced upper space caused by traditional sloping top designs is avoided, thus increasing the freezer's storage capacity. At the same time, the horizontally designed panel 2 is more aesthetically pleasing, enhancing the product's market competitiveness.

[0048] The suction end of the centrifugal fan 6 is set to correspond with the air inlet, ensuring that the gas in the storage chamber 4 is drawn into the centrifugal fan 6 and output towards the evaporator heat exchanger 7 through the centrifugal fan 6, which reduces the energy loss of the cold air in the circulation process and improves the cooling effect.

[0049] The centrifugal fan 6 and the evaporative heat exchanger 7 are arranged at intervals along the front and rear direction of the top plate 3 on the top plate 3.

[0050] The number of air inlets 5 is several, and the several air inlets 5 are arranged along the suction end of the centrifugal fan 6. The length of the arrangement of the several air inlets 5 is greater than the opening length of the suction end of the centrifugal fan 6, thereby increasing the air intake and ensuring that the air in the storage chamber 4 can enter the heat exchange duct along the suction end of the centrifugal fan 6.

[0051] The centrifugal fan 6 has an upper and lower gap L between its suction end and the top plate 3. The upper and lower gap L forms an air intake channel connecting the suction end of the centrifugal fan 6 and the air inlet 5 and increases the air intake volume.

[0052] The vertical spacing L increases the air intake volume on the one hand, and prevents the centrifugal fan 6 from scratching the top plate 3 when it rotates on the other hand.

[0053] A separator 22 is provided between the centrifugal fan 6 and the evaporative heat exchanger 7 to separate the centrifugal fan 6 and the evaporative heat exchanger 7.

[0054] A cold air inlet duct 8 is provided between the storage chamber 4 and the inner back of the cabinet 1, which connects to the storage chamber 4. The cold air that has been heated by the evaporator heat exchanger 7 returns to the storage chamber 4 along the cold air inlet or the cold air inlet duct 8.

[0055] The top plate 3 is provided with a partition plate 28 for separating the air inlet 5 and the air outlet 27, so that the gas in the storage chamber 4 can enter through the air inlet 5 under the action of the centrifugal fan 6, and the gas can flow completely through the heat exchange air duct before being output to the storage chamber 4 through the air outlet 27.

[0056] The partition plate 28 includes a transverse partition plate 29 extending in the transverse direction of the top plate 3 and a longitudinal partition plate 30 extending in the longitudinal direction of the top plate 3. The transverse partition plate 29 and the longitudinal partition plate 30 are assembled into an L-shape.

[0057] The plate 2 is provided with a lower mounting part 10 for fixing and installing the centrifugal fan 6. The lower mounting part 10 is provided with a first opening slot 11 corresponding to the air inlet of the centrifugal fan 6.

[0058] The plate 2 is provided with a duct component 13 that cooperates with the centrifugal fan 6. The duct component 13 and the lower mounting component 10 form a centrifugal duct. The duct component 13 is provided with a second opening slot 14 corresponding to the evaporator heat exchanger 7 and the air outlet end of the centrifugal fan 6.

[0059] The air duct component 13 is provided with an arc-shaped air duct 15. The centrifugal fan 6 draws in the gas from the storage chamber 4. The gas passes through the centrifugal fan 6 and is output along the arc-shaped air duct 15 and the second opening slot 14, and exchanges heat through the evaporative heat exchanger 7.

[0060] The air duct component 13 is an air duct foam component.

[0061] The air duct component 13 is a foam air duct component. The foam air duct component has good heat insulation performance, which reduces heat loss of cold air during circulation and improves refrigeration efficiency. At the same time, the lightweight nature of the foam material also reduces the overall weight of the freezer.

[0062] The transverse partition 29 extends laterally along the side of the air duct component 13, and the longitudinal partition 30 extends longitudinally along the side of the air duct component 13 toward the evaporator heat exchanger 7. Both sides of the air duct component 13 are provided with transverse partition 29 and longitudinal partition 30. The transverse partition 29 is located between the air inlet 5 and the evaporator heat exchanger 7, and the longitudinal partition 30 is located between the air duct component 13 and the evaporator heat exchanger 7.

[0063] The design of the air duct component 13 optimizes the flow path of the cold air, reduces energy loss during the circulation process, and improves cooling efficiency. The curved air duct 15 design allows the cold air to pass through the evaporator heat exchanger more smoothly, improving the heat exchange effect.

[0064] The plate 2 is provided with a water receiving part 16 below the evaporator heat exchanger 7, and the water receiving part 16 is provided with a water receiving trough 17 for receiving condensate.

[0065] The side of the water receiving component 16 is provided with a support component 18 for fixing to the top plate 3, and the water receiving component 16 is provided with a drain outlet connected to the drain connector 19.

[0066] The plate 2 is provided with a water receiving part 16 below the evaporator heat exchanger 7, and the water receiving part 16 is provided with a water receiving trough 17 for collecting condensate. The design of the water receiving part 16 effectively collects the condensate generated by the evaporator heat exchanger 7, avoids the accumulation of condensate inside the freezer, reduces the moisture inside the freezer, and improves the service life of the freezer.

[0067] The design of the support component 18 allows the water receiving component 16 to be firmly fixed to the top plate, ensuring the effective collection and discharge of condensate and avoiding the impact of condensate leakage on the interior of the freezer.

[0068] The cabinet 1 includes a support base 9 for mounting the compressor and condenser, or the compressor and condenser are mounted on the plate 2;

[0069] The top plate 3 is provided with a reinforcing plate 20 extending downward toward the bottom of the plate 2 on the rear side of the cabinet 1;

[0070] The plate 2 is provided with a protective top plate 21 above it to protect the centrifugal fan 6 and the evaporative heat exchanger 7;

[0071] The plate 2 is provided with a lower mounting part 10, and the lower mounting part 10 is provided with a connecting flange 12. The top of the storage cavity 4 is provided with a vertically extending vertical plate 24 corresponding to one side of the plate 2. The lower mounting part 10 is fixed to the vertical plate 24 through the connecting flange 12 and suspended above the plate 2. The centrifugal fan 6 is fixed to the lower mounting part 10 so that an air inlet channel is formed between the centrifugal fan 6 and the plate 2, connecting the suction end of the centrifugal fan 6 and the air inlet 5.

[0072] The lower mounting component 10 has an extension component 23 extending toward the evaporator heat exchanger 7 at one end. When the lower mounting component 10 is suspended, the extension component 23 forms a separator 22 separating the centrifugal fan 6 and the evaporator heat exchanger 7.

[0073] The lower mounting component 10 is provided with an air duct component 13 above it, and an upper mounting component 25 is provided at the top of the air duct component 13. The upper mounting component 25 and the lower mounting component 10 work together to fix the centrifugal fan 6. The air duct component 13 is provided with a clearance 26 at the connection between the centrifugal fan 6 and the upper mounting component 25. One end of the upper mounting component 25 extends toward the evaporator heat exchanger 7, and a heat exchange air duct is formed between the lower mounting component 10, the air duct component 13, and the part of the upper mounting component 25 that extends toward the evaporator heat exchanger 7.

[0074] By mounting the compressor and condenser on the support base 9 or the plate 2, the internal space layout of the freezer is optimized, reducing the space occupied by the compressor and condenser and increasing the storage capacity of the freezer.

[0075] The design of the lower mounting component 10 makes the installation of the centrifugal fan 6 more stable.

[0076] The design of the connecting flange 12 allows the lower mounting part 10 to be firmly fixed inside the freezer, further reducing the possibility of the centrifugal fan 6 shifting left or right or up or down during operation, thus improving the stability and durability of the freezer.

[0077] The design of reinforced panel 20 enhances the structural strength of panel 2 and improves the durability of the freezer. The design of protective top panel 21 effectively protects centrifugal fan 6 and evaporative heat exchanger 7, reduces the impact of the external environment on the internal refrigeration system of the freezer, and extends the service life of the freezer.

[0078] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A new type of ice cabinet comprising a cabinet body (1), characterized in that: The cabinet (1) includes a storage cavity (4), a plate (2) located on top of the storage cavity (4) and an evaporator fan module. The plate (2) includes a top plate (3), which is horizontal and flat and forms the inner top wall of the storage cavity (4). The evaporator fan module is located on the top plate (3). The evaporator fan module includes a heat exchange duct with an air inlet (5) and an air outlet (27), and a centrifugal fan (6) and an evaporative heat exchanger (7) installed on the heat exchange duct; the air inlet (5) and the air outlet (27) of the heat exchange duct are both connected to the storage chamber (4). The air inlet (5) is located on the top plate (3); The centrifugal fan (6) has its suction end and air inlet (5) respectively. The gas in the storage chamber (4) is driven by the centrifugal fan (6) and enters the heat exchange duct through the air inlet (5) and exchanges heat with the evaporator heat exchanger (7) to form cold air. The cold air enters the storage chamber (4) along the air outlet (27).

2. The novel ice chest according to claim 1, wherein: The centrifugal fan (6) and the evaporative heat exchanger (7) are arranged at intervals along the front and rear direction of the top plate (3) on the top plate (3).

3. The novel ice chest according to claim 1, wherein: The number of air inlets (5) is several, and the several air inlets (5) are arranged along the suction end of the centrifugal fan (6). The length of the arrangement of the several air inlets (5) is greater than the length of the suction end opening of the centrifugal fan (6).

4. The new ice cabinet according to claim 1, characterized in that: The centrifugal fan (6) has an upper and lower gap L between its suction end and the top plate (3). The upper and lower gap L forms an air intake channel connecting the suction end of the centrifugal fan (6) and the air inlet (5) and increases the air intake volume.

5. The new ice cabinet according to claim 1, characterized in that: A separator (22) is provided between the centrifugal fan (6) and the evaporative heat exchanger (7) to separate the centrifugal fan (6) and the evaporative heat exchanger (7).

6. The new ice cabinet according to claim 1, characterized in that: A cold air inlet duct (8) is provided between the storage cavity (4) and the inner back of the cabinet (1) to connect the storage cavity (4). The cold air that has been heated by the evaporator heat exchanger (7) returns to the storage cavity (4) along the cold air inlet or the cold air inlet duct (8).

7. The novel freezer according to claim 1, characterized in that: The top plate (3) is provided with a partition plate (28) for separating the air inlet (5) and the air outlet (27), so that the gas in the storage cavity (4) can enter through the air inlet (5) under the action of the centrifugal fan (6), and the gas can flow completely through the heat exchange air duct and then be output to the storage cavity (4) through the air outlet (27).

8. The novel ice chest according to claim 7, characterized in that: The partition plate (28) includes a transverse partition plate (29) extending in the transverse direction of the top plate (3) and a longitudinal partition plate (30) extending in the longitudinal direction of the top plate (3). The transverse partition plate (29) and the longitudinal partition plate (30) are assembled in an L-shape. The plate (2) is provided with a lower mounting part (10) for fixing and installing a centrifugal fan (6), and the lower mounting part (10) is provided with a first opening groove (11) corresponding to the air inlet of the centrifugal fan (6). The plate (2) is provided with a duct component (13) that cooperates with the centrifugal fan (6). The duct component (13) and the lower mounting component (10) form a centrifugal duct. The duct component (13) is provided with a second opening slot (14) corresponding to the evaporative heat exchanger (7) and the air outlet of the centrifugal fan (6). The air duct component (13) is provided with an arc-shaped air duct (15). The centrifugal fan (6) draws the gas from the storage chamber (4). The gas passes through the centrifugal fan (6) and is output along the arc-shaped air duct (15) and the second opening slot (14), and exchanges heat through the evaporative heat exchanger (7). The air duct component (13) is an air duct foam component; The transverse partition (29) extends laterally along the side of the air duct (13), and the longitudinal partition (30) extends longitudinally along the side of the air duct (13) toward the evaporator heat exchanger (7). Both sides of the air duct (13) are provided with transverse partition (29) and longitudinal partition (30). The transverse partition (29) is located between the air inlet (5) and the evaporator heat exchanger (7), and the longitudinal partition (30) is located between the air duct (13) and the evaporator heat exchanger (7).

9. The new ice cabinet according to claim 1, characterized in that: The plate (2) is provided with a water receiving part (16) below the evaporator heat exchanger (7), and the water receiving part (16) is provided with a water receiving tank (17) for receiving condensate. The water receiving component (16) has a support component (18) on its side for fixing to the top plate (3), and the water receiving component (16) has a drain outlet connected to the drain connector (19).

10. The novel ice chest according to claim 1, wherein: The cabinet (1) includes a support base (9) for mounting the compressor and condenser, or the compressor and condenser are mounted on the plate (2); The top plate (3) is provided with a reinforcing plate (20) extending downward toward the bottom of the plate (2) on the rear side of the cabinet (1); The plate (2) is provided with a protective top plate (21) above it to protect the centrifugal fan (6) and the evaporative heat exchanger (7). The plate (2) is provided with a lower mounting part (10), and the lower mounting part (10) is provided with a connecting flange (12). The top of the storage cavity (4) is provided with a vertically extending vertical plate (24) on one side of the plate (2). The lower mounting part (10) is fixed to the vertical plate (24) by the connecting flange (12) and suspended above the plate (2). The centrifugal fan (6) is fixed to the lower mounting part (10) so that an air inlet channel is formed between the centrifugal fan (6) and the plate (2) to connect the suction end of the centrifugal fan (6) and the air inlet (5). The lower mounting part (10) has an extension part (23) extending toward the evaporator heat exchanger (7) at one end. The extension part (23) forms a separator (22) separating the centrifugal fan (6) and the evaporator heat exchanger (7) when the lower mounting part (10) is suspended. The lower mounting component (10) is provided with an air duct component (13) above it. The top of the air duct component (13) is provided with an upper mounting component (25). The upper mounting component (25) and the lower mounting component (10) work together to fix the centrifugal fan (6). The air duct component (13) is provided with a clearance space (26) at the connection between the centrifugal fan (6) and the upper mounting component (25). One end of the upper mounting component (25) extends toward the evaporator heat exchanger (7). A heat exchange air duct is formed between the lower mounting component (10), the air duct component (13), and the part of the upper mounting component (25) that extends toward the evaporator heat exchanger (7).