Cooling air duct device and air curtain cabinet comprising same

Abstract

The utility model relates to a cooling air duct device and an air curtain cabinet comprising the same, and belongs to the technical field of air curtain cabinets, the cooling air duct device comprises a front fan, an evaporator and an evaporation fan; wherein the front fan is mounted at the bottom of the cabinet body and is used for sucking part of cold air overflowing to the outside back into the air duct; the evaporator is installed on the back face in the cabinet body and used for cooling gas in the air channel. The evaporation fan is installed on the lower bottom face in the cabinet body and used for sucking gas sucked back into the air channel by the front fan and part of cold air passing through the evaporator and outputting the gas and the cold air to an inlet of the evaporator. As shown in figure 2, the front fan, the evaporation fan inlet and the evaporator inlet form a primary cooling air duct, and the evaporator outlet, the evaporation fan inlet and the evaporator inlet form a secondary cooling air duct. According to the cooling air duct device, cold air overflowing to the outside is sucked back into the air duct through the front fan, primary cooling is carried out through the evaporation fan and the evaporator, cold air outflow can be reduced, and therefore the production and use cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of air curtain cabinets, and in particular relates to a cooling air duct device and an air curtain cabinet comprising the same. Background Art

[0002] Air curtain cabinets are common refrigeration devices used to preserve beverages, fresh fruits, and vegetables. Regardless of their type, they all feature a complete set of cooling and heat dissipation ducts, which evenly distribute cold air throughout the cabinet and dissipate heat generated by the operation of the equipment to the outside environment. However, due to their open structure, air curtain cabinets experience significant air leakage, which can be wasted. Furthermore, this outflow of cold air increases the cabinet's energy consumption and requires a larger evaporator, significantly increasing both the production and operating costs of the air curtain cabinet.

[0003] Therefore, how to solve the problem of waste of cold air outflow from air curtain cabinets is a technical problem that needs to be solved urgently. Utility Model Content

[0004] In response to the shortcomings of the prior art, the utility model provides a cooling air duct device and an air curtain cabinet containing the same. The cold air overflowing to the outside is sucked back into the air duct through the front fan, and is cooled once through the evaporating fan and evaporator, which can reduce the outflow of cold air and reduce the need for a larger evaporator, thereby reducing production and use costs.

[0005] The utility model provides a cooling air duct device, comprising:

[0006] The front fan is installed at the bottom of the cabinet and is used to suck the cold air that overflows to the outside back into the air duct;

[0007] The evaporator is installed on the inner back of the cabinet and is used to cool the gas in the air duct;

[0008] The evaporating fan is installed on the bottom surface of the cabinet and is used to absorb the cold air inside the cabinet, the gas sucked back into the air duct by the front fan, and part of the cold air passing through the evaporator, and output it to the evaporator inlet;

[0009] The front fan, the evaporating fan inlet and the evaporator inlet form a primary cooling air duct, and the evaporator outlet, the evaporating fan inlet and the evaporator inlet form a secondary cooling air duct.

[0010] This technical solution uses the front fan to suck part of the cold air that overflows to the outside back into the air duct, and cools it once through the evaporative fan and evaporator, which can reduce the outflow of cold air and reduce the need for a larger evaporator, thereby reducing production and use costs.

[0011] In some embodiments, a front decorative plate is provided on the outer surface of the front fan. The technical solution can protect the front fan and beautify the appearance by providing the front decorative plate.

[0012] In some embodiments, the front fan is located underneath the front fascia, which is sealed below and has ventilation holes above. Temperature sensors are installed in the ventilation holes to sense the outside temperature. This technical solution seals the bottom of the front fascia, allowing air to enter only through the ventilation holes when the front fan is not operating. This effectively prevents the escape of cold air from the interior. The temperature sensor monitors the outside temperature in real time, and the ventilation holes ensure the fan's ventilation effectiveness, while maintaining the overall sealing of the equipment and improving operational efficiency.

[0013] In some embodiments, the cooling duct assembly further includes an electronic thermostat, which is mounted on the cabinet and communicates with the temperature sensor and front blower. When the temperature sensor detects that the ambient temperature is below a preset value, the electronic thermostat opens the front panel and activates the front blower. This technical solution, through the provision of the electronic thermostat, enables the cooling duct assembly to automatically start and stop the front blower based on the ambient temperature, thereby saving energy.

[0014] In some embodiments, a foam box is provided at the bottom of the cabinet, and the front blower is fixed in the foam box. This technical solution can make the front blower more stable and reduce vibration and noise by providing the foam box.

[0015] In some embodiments, the front fan housing is provided with a heating element for preventing the generation of condensed water. This technical solution can avoid the influence of condensed water on the fan and extend its service life.

[0016] In some embodiments, the evaporator fan is fixed obliquely to the cabinet via a fixing plate, tilting the evaporator fan outlet toward the evaporator. This also narrows the secondary cooling air duct between the evaporator fan outlet and the evaporator fan inlet. This technical solution ensures that the evaporator fan only draws back a portion of the cold air that has passed through the evaporator, preventing excessive secondary cooling.

[0017] In some embodiments, a wind shield is further provided on the outside of the return air net at the bottom of the cabinet. This technical solution can block some of the cold air from escaping through the provision of the wind shield, while reducing the interference of external airflow on the internal environment.

[0018] In addition, the present invention also provides an air curtain cabinet, which includes the above-mentioned cooling air duct device and a cabinet body, and a return air network is provided at the bottom of the cabinet body, and the return air network is connected to the primary cooling air duct.

[0019] Based on the above scheme, the cooling duct device in the embodiment of the present invention can partially absorb the cold air that overflows to the outside back into the duct through the front fan, and cool it once through the evaporating fan and evaporator, which can reduce the outflow of cold air and reduce the need for a larger evaporator, thereby reducing production and use costs; at the same time, part of the cold air that passes through the evaporator will be sucked back by the evaporating fan and cooled twice by the evaporator, making the temperature of the cold air in the duct lower, improving the utilization rate of the evaporator and reducing the use cost. The air curtain cabinet in the embodiment of the present invention can recover and cool the overflowing cold air through the cooling duct device, and at the same time ensure the circulation of cold air inside the cabinet through the cooperation of the return air network and the cooling duct device, which can effectively reduce energy waste and improve the overall cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 This is a schematic structural diagram of a cooling air duct device in an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the wind direction of the cooling air duct device in the embodiment of the present utility model;

[0023] Figure 3 for Figure 1 A magnified schematic diagram of part A;

[0024] Figure 4 for Figure 1 An enlarged schematic diagram of part B;

[0025] Figure 5 This is a schematic diagram of the structure of the ventilation hole in the embodiment of the present utility model;

[0026] Figure 6 It is a front view of the air curtain cabinet in the embodiment of the present utility model.

[0027] In the picture:

[0028] 1. Front fan; 2. Evaporating fan; 201. Fixing plate; 3. Evaporator; 4. Front trim panel; 401. Ventilation holes; 5. Temperature sensor; 6. Electronic temperature controller; 7. Wind shield; 8. Return air grille. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0032] like Figures 1-6 As shown, in one embodiment of the cooling air duct device and the air curtain cabinet containing the same of the present invention, as shown Figure 1 As shown, the cooling air duct device includes a front fan 1, an evaporator 3 and an evaporating fan 2; wherein the front fan 1 is installed at the bottom of the cabinet and is used to absorb part of the cold air overflowing to the outside back into the air duct; the evaporator 3 is installed on the inner back of the cabinet and is used to cool the gas in the air duct; the evaporating fan 2 is installed on the inner bottom surface of the cabinet and is used to absorb the cold air inside the cabinet, the gas sucked back into the air duct by the front fan 1 and part of the cold air passing through the evaporator 3, and output it to the inlet of the evaporator 3; as shown in FIG. Figure 2 As shown, the front fan 1, the inlet of the evaporating fan 2 and the inlet of the evaporator 3 form a primary cooling air duct, and the outlet of the evaporator 3, the inlet of the evaporating fan 2 and the inlet of the evaporator 3 form a secondary cooling air duct.

[0033] In the above-mentioned schematic embodiment, the cooling air duct device absorbs part of the cold air overflowing to the outside back into the air duct through the front fan 1, and cools it once through the evaporating fan 2 and the evaporator 3, which can reduce the outflow of cold air and reduce the demand for a larger evaporator 3, thereby reducing the production and use costs; at the same time, part of the cold air passing through the evaporator 3 will be sucked back by the evaporating fan 2, and after secondary cooling by the evaporator 3, the temperature of the cold air in the air duct will be lower, thereby improving the utilization rate of the evaporator 3 and reducing the use cost.

[0034] It should be noted that the front fan 1 and the evaporating fan 2 are both suction fans.

[0035] In some embodiments, as Figure 1 As shown, the outer surface of the front blower 1 is provided with a front decorative plate 4. By providing the front decorative plate 4, the front blower 1 can be protected and the appearance can be beautified.

[0036] It should be noted that when the front fan 1 stops working, the fan blades of the front fan 1 are in a sealed state, thereby preventing the internal cold air from flowing out and avoiding energy waste.

[0037] Furthermore, if Figure 4-Figure 5 As shown, the front fan 1 is located inside the lower portion of the front fascia 4. The lower portion of the front fascia 4 is sealed, and a ventilation hole 401 is provided above. A temperature sensor 5 is installed in the ventilation hole 401 to sense the external temperature. By sealing the lower portion of the front fascia 4, when the front fan 1 is not operating, only the ventilation hole 401 of the front fascia 4 can enter the front fascia 4, effectively preventing the escape of internal cold air. The temperature sensor 5 monitors the external temperature in real time and ensures the fan's ventilation effect through the ventilation hole 401, while maintaining the overall sealing of the equipment and improving operational efficiency.

[0038] In some embodiments, as Figure 6 As shown, the cooling duct device also includes an electronic thermostat 6, which is mounted on the cabinet and communicates with the temperature sensor 5 and the front fan 1. When the temperature sensor 5 detects that the ambient temperature is below a preset value, the electronic thermostat 6 opens the front trim panel 4 and activates the front fan 1. This configuration allows the cooling duct device to automatically start and stop the front fan 1 according to the ambient temperature, saving energy and improving the device's intelligence and efficiency.

[0039] In some embodiments, the preset value is 16° C. It is understandable that after the cold air overflows, it moves downward, and the temperature sensor 5 can sensitively sense the cold air overflow. By reasonably setting the preset value, when the cold air temperature is lower than the preset value, it means that a large amount of cold air has overflowed. At this time, the cooling air duct device is started to recover the cold air, and the cooling air duct device can be operated under optimal conditions, thereby effectively reducing energy consumption.

[0040] Furthermore, if Figure 6As shown, the electronic temperature controller 6 is arranged on the top of the cabinet.

[0041] In some embodiments, as Figure 6 As shown, a foam box is provided at the bottom of the cabinet, and the front blower 1 is fixed in the foam box. By setting the foam box, the front blower 1 can be made more stable and reduce vibration and noise.

[0042] Furthermore, the periphery of the front decorative plate 4 is in contact with the foam box. This embodiment can enhance the overall sealing of the cabinet and improve the thermal insulation performance.

[0043] In some embodiments, the housing of the front fan 1 is provided with a heating element for preventing the generation of condensed water, thereby avoiding the influence of condensed water on the fan and extending its service life.

[0044] In some embodiments, as Figure 3 As shown, the evaporator fan 2 is fixed obliquely to the cabinet via a fixing plate 201, so that the outlet of the evaporator fan 2 is tilted toward the evaporator 3. This also narrows the secondary cooling air duct between the outlet and inlet of the evaporator fan 2. By narrowing the secondary cooling air duct between the outlet and inlet of the evaporator fan 2, the evaporator fan 2 can only draw back a portion of the cold air that has passed through the evaporator 3, avoiding excessive secondary cooling and effectively improving cooling efficiency.

[0045] In some embodiments, as Figure 1 As shown, a wind shield 7 is further provided on the outside of the return air net 8 at the bottom of the cabinet. By setting the wind shield 7, some cold air can be blocked from overflowing, while reducing the interference of external airflow on the internal environment and keeping the temperature stable.

[0046] In some embodiments, the windshield 7 is made of glass.

[0047] Based on the above cooling air duct device, the utility model also provides an air curtain cabinet, such as Figure 1 As shown, the air curtain cabinet includes the above-mentioned cooling air duct device and a cabinet body. A return air net 8 is provided at the bottom of the cabinet body, and the return air net 8 is connected to the primary cooling air duct.

[0048] In the above-mentioned exemplary embodiment, the air curtain cabinet can recover and cool the overflowing cold air through the cooling duct device, and at the same time ensure the cold air circulation inside the cabinet through the cooperation of the return air network 8 and the cooling duct device, which can effectively reduce energy waste and improve the overall cooling efficiency.

[0049] Through the description of multiple embodiments of the cooling air duct device and the air curtain cabinet including the same of the present invention, it can be seen that the cooling air duct device and the air curtain cabinet including the same of the present invention have at least one or more of the following advantages:

[0050] 1. The cooling air duct device provided by the present invention sucks the cold air that overflows to the outside back into the air duct through the front fan 1, and cools it once through the evaporating fan 2 and evaporator 3. This can reduce the outflow of cold air and the need for a larger evaporator 3, thereby reducing production and use costs.

[0051] 2. In the cooling air duct device provided by the present invention, part of the cold air passing through the evaporator 3 is sucked back by the evaporating fan 2 and subjected to secondary cooling by the evaporator 3, so that the temperature of the cold air in the air duct is lower, thereby improving the utilization rate of the evaporator 3 and reducing the use cost;

[0052] 3. The air curtain cabinet provided by the present invention can recover and cool the overflowing cold air through the cooling duct device. At the same time, the cooperation between the return air network 8 and the cooling duct device ensures the cold air circulation inside the cabinet, which can effectively reduce energy waste and improve the overall cooling efficiency.

[0053] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0054] The above embodiments are only used to illustrate the technical solution of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention. They should all be included in the scope of the technical solution for which protection is requested in the present invention.

Claims

1. A cooling air duct device, characterized in that: include: The front fan is installed at the bottom of the cabinet and is used to suck the cold air that overflows to the outside back into the air duct; The evaporator is installed on the inner back of the cabinet and is used to cool the gas in the air duct; The evaporating fan is installed on the bottom surface of the cabinet and is used to absorb the cold air inside the cabinet, the gas sucked back into the air duct by the front fan, and part of the cold air passing through the evaporator, and output it to the evaporator inlet; The front fan, the evaporating fan inlet and the evaporator inlet form a primary cooling air duct, and the evaporator outlet, the evaporating fan inlet and the evaporator inlet form a secondary cooling air duct.

2. The cooling air duct device according to claim 1, characterized in that: The outer surface of the front fan is provided with a front trim panel.

3. The cooling air duct device according to claim 2, characterized in that: The front fan is located inside the bottom of the front trim panel. The bottom of the front trim panel is closed, and there are ventilation holes on the top. A temperature sensor is installed in the ventilation hole to sense the outside temperature.

4. The cooling air duct device according to claim 3, characterized in that: It also includes an electronic temperature controller, which is installed on the cabinet and communicates with the temperature probe and the front fan respectively; when the temperature probe senses that the external temperature is lower than the preset value, the electronic temperature controller controls the front trim panel to open and controls the front fan to start working.

5. The cooling air duct device according to claim 1, characterized in that: A foaming box is provided at the bottom of the cabinet, and the front fan is fixed in the foaming box.

6. The cooling air duct device according to claim 1, characterized in that: The front fan housing is equipped with a heating element to prevent condensation.

7. The cooling air duct device according to claim 2, characterized in that: The evaporating fan is fixed obliquely inside the cabinet through a fixing plate so that the evaporating fan outlet is inclined toward the evaporator, and at the same time the secondary cooling air duct between the evaporating fan outlet and the evaporating fan inlet is narrowed.

8. The cooling air duct device according to claim 1, characterized in that: There is also a wind shield on the outside of the return air net at the bottom of the cabinet.

9. The cooling air duct device and the air curtain cabinet comprising the same according to claim 8, characterized in that: The windshield is made of glass.

10. An air curtain cabinet, characterized in that: The cooling air duct device comprises the cooling air duct device according to any one of claims 1 to 9, and further comprises a cabinet body, wherein a return air network is provided at the bottom of the cabinet body, and the return air network is connected to the primary cooling air duct.

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