Air curtain cabinet

Abstract

The utility model relates to a kind of air curtain cabinet, belong to refrigeration equipment technical field;Wherein air curtain cabinet includes cabinet, cabinet door, crossflow fan and evaporator;Cabinet inside is limited to form with air duct and first containing cavity, air duct and first containing cavity are mutually isolated, air duct is located at the rear side of first containing cavity;Air duct is equipped with first air port and second air port, first air port and second air port are respectively communicated with first containing cavity, first air port is equipped in the top of cabinet, and second air port is close to the bottom of first containing cavity and is set;The front side of cabinet is equipped with the opening communicated with first containing cavity;Cabinet door is in the opening of first containing cavity with openable and closable mode;Crossflow fan and evaporator are respectively arranged in air duct, and evaporator is below crossflow fan, to avoid that condensed water on evaporator drops on fan;Crossflow fan is close to the top of cabinet and is set, and the axis of crossflow fan is arranged along horizontal direction, to reduce the occupied space of crossflow fan, to increase the volume of first containing cavity.

Description

Technical Field

[0001] This utility model belongs to the field of refrigeration technology, and in particular relates to an air curtain cabinet. Background Technology

[0002] Fans and evaporators are important components of air curtain cabinets. In existing air curtain cabinets, axial fans are usually used. Axial fans are not only noisy, but also take up a lot of space, resulting in less actual storage space in the air curtain cabinet. The fans are usually located at the bottom of the cabinet and near the rear side. The fans are located below the evaporator, and the condensate from the evaporator can easily drip onto the fans under the influence of gravity, affecting the service life of the fans.

[0003] Therefore, it is of great significance to design an air curtain cabinet that can reduce the space occupied by the fan and prevent condensate from dripping onto the fan. Utility Model Content

[0004] To address the shortcomings of related technologies, this utility model provides an air curtain cabinet. By employing a cross-flow fan and placing it at the top of the cabinet, the cross-flow fan is arranged horizontally to reduce the space occupied by the fan. Furthermore, the evaporator is placed below the cross-flow fan to prevent condensate from dripping onto the fan.

[0005] This utility model provides an air curtain cabinet, comprising:

[0006] The cabinet has an internally defined air duct and a first receiving cavity, which are separated from each other. The air duct is located at the rear of the first receiving cavity. The air duct has a first air outlet and a second air outlet, which are respectively connected to the first receiving cavity. The first air outlet is located at the top of the cabinet, and the height of the second air outlet is lower than the height of the first air outlet. The front of the cabinet has an opening that connects to the first receiving cavity.

[0007] A cabinet door is provided at the opening of the first receiving cavity in an openable and closable manner, for opening or closing the first receiving cavity;

[0008] A cross-flow fan is installed inside the air duct and near the top of the cabinet; the axis of the cross-flow fan is set in the horizontal direction.

[0009] The evaporator is located inside the air duct, below the cross-flow fan, and near the rear of the cabinet.

[0010] In the technical solution, by arranging the cross-flow fan horizontally and placing it near the top of the cabinet, the space occupied by the cross-flow fan is reduced, thereby increasing the space of the first receiving cavity and thus increasing the number of items that the air curtain cabinet can hold; by placing the evaporator below the cross-flow fan, the condensate produced by the evaporator is prevented from dripping onto the cross-flow fan and damaging its use.

[0011] In some embodiments, the bottom of the cabinet further defines a mutually isolated compressor chamber and a second receiving cavity. The compressor chamber is used to house the compressor and / or condenser. The compressor chamber is located near the rear side of the cabinet, and the second receiving cavity is located at the front side of the compressor chamber. The top of the second receiving cavity communicates with the first receiving cavity.

[0012] In the technical solution, the compressor chamber for placing the compressor is located near the rear of the cabinet, so that a second receiving cavity can be formed on the front of the cabinet to increase the internal storage space of the cabinet, thereby increasing the number of items that the air curtain cabinet can hold.

[0013] In some embodiments, the first air vent is arranged downwards, and a baffle is provided at the first air vent to divide the first air vent into two parts arranged side by side.

[0014] In the technical solution, by setting the first air outlet downward and installing a baffle at the first air outlet, the first air outlet is divided into two parallel parts by the baffle, so that the airflow can be more uniform when it blows out of the first air outlet and the air outlet effect is better.

[0015] In some embodiments, the air duct includes a first air duct section and a second air duct section, which are interconnected. The first air duct section is arranged along the front-to-back direction of the cabinet and is located at the top of the cabinet. The second air duct section is arranged along the height direction of the cabinet. A first air outlet is opened in the first air duct section, and a second air outlet is opened in the second air duct section. A cross-flow fan is located at the connection between the first air duct section and the second air duct section. The evaporator is located in the second air duct section.

[0016] In some embodiments, the cabinet is provided with an air duct plate, which is used to separate the second air duct section from the first receiving cavity; the air duct plate is vertically arranged along the height direction of the cabinet.

[0017] In the technical solution, by making the air duct plate vertically along the height direction of the cabinet, the dimensions of the first receiving cavity are consistent in the height direction of the cabinet, thereby increasing the storage space inside the cabinet.

[0018] In some embodiments, the cross-flow fan can rotate forward and reverse; when the cabinet door is closed, the cross-flow fan rotates forward, causing the airflow in the duct to blow from the second air outlet to the first receiving cavity, and causing the airflow in the first receiving cavity to enter the duct through the first air outlet; when the cabinet door is open, the cross-flow fan rotates in reverse, causing the airflow in the duct to blow from the first air outlet to the first receiving cavity, and causing the airflow in the first receiving cavity to enter the duct through the second air outlet.

[0019] In the technical solution, by enabling the cross-flow fan to rotate in both directions, the cross-flow fan can cause airflow to be blown out of the air duct from the first air inlet and into the air duct from the second air inlet when the cabinet door is open, thereby forming an air curtain; when the cabinet door is closed, the airflow can be blown into the air duct from the first air inlet and out of the air duct from the second air inlet, thereby making the temperature of the items placed inside the cabinet more uniform and stable.

[0020] In some embodiments, a controller is also included, which is connected to the cross-flow fan to control the operation of the cross-flow fan.

[0021] In some embodiments, the cabinet door is equipped with a magnetic switch, which is used to detect the opening and closing status of the cabinet door; the magnetic switch is connected to a controller so that the controller controls the direction of the cross-flow fan according to the detection information of the magnetic switch.

[0022] In some embodiments, a thermostat is installed inside the cabinet to detect the temperature inside the cabinet; the thermostat is connected to a controller so that the controller controls the speed of the cross-flow fan based on the detection information from the thermostat.

[0023] In the technical solution, the controller adjusts the speed of the cross-flow fan based on the detection information from the temperature controller to ensure the refrigeration effect of the air curtain cabinet.

[0024] In some embodiments, the cabinet door is a glass door, and a heating component is provided on the cabinet door for heating the cabinet door; the heating component is connected to a controller; the temperature controller includes two probes, which are used to detect the temperature inside and outside the cabinet; the controller controls the operation of the heating component based on the detection information from the temperature controller.

[0025] In the technical solution, the cabinet door is made of glass to display the items placed inside the cabinet; a heating component is installed on the cabinet door to prevent condensation from affecting the display effect; and the controller controls the operation of the heating component based on the detection information of the temperature controller so that the heating component works when the temperature difference between the inside and outside of the cabinet is large, and does not work when the temperature difference is small, so that the heating component can work on demand and avoid waste.

[0026] Based on the above technical solution, in this embodiment of the utility model, the cross-flow fan in the air curtain cabinet occupies a small space, the space inside the cabinet can hold a large amount of items, and the condensate produced on the evaporator will not drip onto the cross-flow fan. The cross-flow fan has a long service life and high operational reliability. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0028] Figure 1 This is a structural schematic diagram of one embodiment of the air curtain cabinet of this utility model;

[0029] Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle;

[0030] Figure 3 This is a structural schematic diagram of another embodiment of the air curtain cabinet of this utility model from another angle;

[0031] Figure 4 This is a schematic diagram of the airflow path when the cabinet door is closed in one embodiment of the air curtain cabinet of this utility model;

[0032] Figure 5 This is a schematic diagram of the airflow path when the cabinet door is opened in one embodiment of the air curtain cabinet of this utility model.

[0033] In the picture:

[0034] 1. Cabinet body; 2. Cabinet door; 3. Cross-flow fan; 4. Evaporator; 5. Baffle; 6. Magnetic switch;

[0035] 101. Air duct; 102. First receiving cavity; 103. Compressor chamber; 104. Second receiving cavity; 105. First air outlet; 106. Second air outlet;

[0036] 1011, First air duct section; 1012, Second air duct section;

[0037] 11. Air duct panel; 12. Shelf. Detailed Implementation

[0038] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0039] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] As attached Figure 1 and Figure 3 As shown in an illustrative embodiment of the air curtain cabinet of this utility model, the air curtain cabinet includes a cabinet body 1, a cabinet door 2, a cross-flow fan 3, and an evaporator 4; the cabinet body 1 internally defines an air duct 101 and a first receiving cavity 102, the air duct 101 and the first receiving cavity 102 are separated from each other, the air duct 101 is located on the rear side of the first receiving cavity 102, and the air duct 101 is arranged close to the rear side of the cabinet body 1; the front side of the cabinet body 1 is provided with an opening communicating with the first receiving cavity 102, through which items in the first receiving cavity 102 can be taken out and put in; the air duct 101 is provided with a first air outlet 105 and a second air outlet 106. The first air vent 105 and the second air vent 106 are respectively connected to the first receiving cavity 102. The first air vent 105 is located at the top of the cabinet 1, and the height of the second air vent 106 is lower than that of the first air vent 105. The cabinet door 2 is located at the opening of the first receiving cavity 102 in an openable manner, for opening or closing the first receiving cavity 102. The cross-flow fan 3 is located in the air duct 101 and is located near the top of the cabinet 1. The axis of the cross-flow fan 3 is arranged in the horizontal direction. The evaporator 4 is located in the air duct 101, below the cross-flow fan 3, and is located near the rear side of the cabinet 1.

[0043] In the aforementioned air curtain cabinet, by arranging the cross-flow fan 3 horizontally and placing it close to the top of the cabinet 1, the space occupied by the cross-flow fan 3 is reduced, thereby increasing the space of the first receiving cavity 102 and thus increasing the space available for placing items in the air curtain cabinet; by placing the evaporator 4 below the cross-flow fan 3, the condensate water generated by the evaporator 4 is prevented from dripping onto the cross-flow fan 3 and damaging its use.

[0044] like Figure 4 and Figure 5 As shown, the cross-flow fan 3 can rotate forward and reverse. When the cabinet door 2 is closed, the cross-flow fan 3 rotates forward, and when the cabinet door 2 is open, the cross-flow fan 3 rotates in reverse.

[0045] like Figure 4 As shown, when cabinet door 2 is closed, the airflow in duct 101 is blown from the second air vent 106 to the first receiving cavity 102. The airflow in the first receiving cavity 102 enters duct 101 from the first air vent 105, causing the airflow to flow from bottom to top within the first receiving cavity 102. Because warmer air has a lower density, it rises. Since the airflow from duct 101 to the first receiving cavity 102 is cooler, the air in the first receiving cavity 102 will rise after the airflow from duct 101 reaches it. By rotating the cross-flow fan in the forward direction when cabinet door 2 is closed, the airflow in the first receiving cavity 102 flows from bottom to top, conforming to the physical characteristic of hot air rising naturally. This efficiently combines forced airflow and natural convection, ensuring a cooling effect and making the temperature of the first receiving cavity 102 more uniform and stable, thereby making the temperature of the items placed inside cabinet 1 more uniform and stable.

[0046] like Figure 5 As shown, when cabinet door 2 is opened, cross-flow fan 3 reverses direction, and airflow in duct 101 is blown from first air outlet 105 to first receiving cavity 102. Airflow in first receiving cavity 102 enters duct 101 from second air outlet 106, so that airflow is blown downward, thereby forming an air curtain in first receiving cavity 102. The air curtain is equivalent to a "barrier" on the outside of the item, which not only prevents warm and humid air from the outside from entering first receiving cavity 102 and contacting the item, but also reduces the speed at which cold air in cabinet 1 dissipates outward, so that the cabinet door 2 can maintain a low temperature environment in first receiving cavity 102 even when it is open.

[0047] In some embodiments, the first air vent 105 is arranged downwards so that when the cabinet door 2 is opened, the airflow blows out of the air duct 101 in a downward direction, thereby increasing the effect of the air curtain.

[0048] like Figure 2 As shown, a baffle 5 is provided at the first air outlet 105. The baffle 5 is used to divide the first air outlet 105 into two parallel parts so that the airflow can be more uniform and the air outlet effect is better when it is blown out from the first air outlet 105.

[0049] like Figure 4 and Figure 5As shown, the air duct 101 includes a first air duct section 1011 and a second air duct section 1012. The first air duct section 1011 and the second air duct section 1012 are interconnected. The first air duct section 1011 is arranged along the front-back direction of the cabinet 1 and is located at the top of the cabinet 1. The second air duct section 1012 is arranged along the height direction of the cabinet 1. The first air outlet 105 is opened at the end of the first air duct section 1011 facing the front side of the cabinet 1, and the second air outlet 106 is opened in the second air duct section 1012. The cross-flow fan 3 is located at the connection between the first air duct section 1011 and the second air duct section 1012. The evaporator 4 is located inside the second air duct section 1012.

[0050] In some embodiments, the evaporator 4 is located in the middle part of the cabinet 1 along the height direction of the cabinet 1, so as to reduce the space occupied by the evaporator 4 at the bottom of the cabinet 1 and increase the cooling effect of the evaporator 4 on the airflow. The temperature at the location of the evaporator 4 is usually the lowest, and the low temperature air usually moves downward. Setting the evaporator 4 in the middle part of the cabinet 1 can make the temperature distribution inside the cabinet 1 more uniform.

[0051] like Figure 1 As shown, the cabinet 1 is equipped with an air duct plate 11, which separates the second air duct section 1012 from the first receiving cavity 102. The air duct plate 11 is vertically arranged along the height direction of the cabinet 1. Compared with the inclined air duct plate 11 in some air curtain cabinets, the vertical arrangement of the air duct plate 11 along the height direction of the cabinet 1 can make the dimensions of the first receiving cavity 102 consistent in the height direction of the cabinet 1, thereby increasing the display space inside the cabinet 1.

[0052] In some embodiments, the air duct plate 11 is provided with a second air vent 106, which is located in the middle part and bottom of the air duct plate 11.

[0053] like Figure 1 As shown, a shelf 12 is usually provided in the first receiving cavity 102 for placing items. The shelf 12 is usually installed on the side of the air duct plate 11 facing the first receiving cavity 102.

[0054] The aforementioned air curtain cabinet also includes a compressor and a condenser. The compressor, condenser, and evaporator 4 together form a refrigerant circulation loop. The refrigerant flows in the refrigerant circulation loop to lower the temperature inside the air duct 101. Then, the airflow is circulated by the cross-flow fan 3 to cool the inside of the cabinet 1. The cooling principle of the air curtain cabinet is common knowledge in this field and will not be elaborated further.

[0055] like Figure 1As shown, the bottom of the cabinet 1 defines a compressor chamber 103 and a second receiving cavity 104, which are isolated from each other. The compressor chamber 103 is used to accommodate a compressor and / or a condenser. The compressor chamber 103 is located near the rear side of the cabinet 1. The second receiving cavity 104 is located at the front side of the compressor chamber 103. The top of the second receiving cavity 104 communicates with the first receiving cavity 102. The second receiving cavity 104 is used to place items.

[0056] The compressor chamber 103 is located near the rear side of the cabinet 1 so that the compressor is located at the bottom of the cabinet 1 and near the rear side of the cabinet 1 so that a second receiving cavity 104 can be formed inside the cabinet 1 in front of the compressor, thereby increasing the receiving space inside the cabinet 1 and thus increasing the storage space of the air curtain cabinet.

[0057] In some embodiments, the bottom plate inside the cabinet 1 has a stepped structure, and the height of the side near the front of the cabinet 1 is lower than the height of the side near the rear of the cabinet 1, so as to define a press chamber 103 and a second receiving cavity 104 at the bottom of the cabinet 1.

[0058] The aforementioned air curtain cabinet also includes a controller, which is installed in the cabinet 1 and located outside the first receiving cavity 102 and the air duct 101. The controller is connected to the cross-flow fan 3 to control the operation of the cross-flow fan 3.

[0059] like Figure 4 and Figure 5 As shown, a magnetic switch 6 is installed on the cabinet door 2. The magnetic switch 6 is used to detect the opening and closing status of the cabinet door 2. The magnetic switch 6 is connected to the controller so that the controller controls the direction of the cross-flow fan 3 according to the detection information of the magnetic switch 6. When the controller determines that the cabinet door 2 is open according to the detection information of the magnetic switch 6, the controller controls the cross-flow fan 3 to rotate in the reverse direction. When the controller determines that the cabinet door 2 is closed according to the detection information of the magnetic switch 6, the controller controls the cross-flow fan 3 to rotate in the forward direction.

[0060] In some embodiments, a thermostat is provided inside the cabinet 1 to detect the temperature inside the cabinet 1; the thermostat is connected to the controller so that the controller controls the speed of the cross-flow fan 3 according to the detection information of the thermostat.

[0061] When the controller determines that the internal temperature of cabinet 1 is high based on the temperature controller's detection information, the controller controls the cross-flow fan 3 to increase its speed to increase the airflow speed, thereby increasing the cooling effect of the evaporator 4, lowering the internal temperature of cabinet 1, and preventing items from spoiling due to high temperature. When the controller determines that the internal temperature of cabinet 1 is low based on the temperature controller's detection information, the controller controls the cross-flow fan 3 to decrease its speed to decrease the airflow speed, thereby reducing the cooling effect of the evaporator 4, raising the internal temperature of cabinet 1, preventing items from freezing, and thus ensuring the refrigeration effect of the air curtain cabinet.

[0062] Cabinet door 2 is usually a glass door. When there is a large temperature difference between the two sides of cabinet door 2, condensation is likely to form on cabinet door 2. The condensation will affect the display effect of cabinet door 2. Therefore, a heating component is provided on cabinet door 2 to heat cabinet door 2 and prevent condensation from forming on cabinet door 2 and affecting the display effect.

[0063] In some embodiments, the thermostat includes two probes, which are respectively located inside and outside the cabinet 1 to detect the internal temperature and external temperature of the cabinet 1.

[0064] The heating element is connected to the controller. The controller controls the heating element to operate based on the detection information from the thermostat, so that the heating element can work on demand and avoid energy waste. When the controller determines that the temperature difference between the inside and outside of cabinet 1 is large based on the detection information from the thermostat, it controls the heating element to heat cabinet door 2; when the controller determines that the temperature difference between the inside and outside of cabinet 1 is small based on the detection information from the thermostat, it controls the heating element to not work.

[0065] It should be noted that the structure, working principle, and control logic of the magnetic switch 6, the thermostat, and the heating element, as well as the control logic used by the controller to control the heating element or the cross-flow fan 3 according to the magnetic switch 6 or the thermostat, are existing technologies in this field and will not be elaborated here.

[0066] Through the description of several embodiments of the air curtain cabinet of this utility model, it can be seen that the embodiments of the air curtain cabinet of this utility model have at least one or more of the following advantages:

[0067] 1. By using a cross-flow fan 3 and placing the cross-flow fan 3 horizontally on the top of the cabinet 1, the space occupied by the cross-flow fan 3 inside is reduced, thereby giving the air curtain cabinet a larger storage space and increasing the number and volume of items that can be placed in the air curtain cabinet.

[0068] 2. By placing the evaporator 4 below the cross-flow fan 3, the condensate generated on the evaporator 4 is prevented from dripping onto the cross-flow fan 3, thus eliminating the potential risk of failure and ensuring the reliability and performance of the cross-flow fan 3.

[0069] 3. By placing the compressor chamber 103, which is used to house the compressor and / or condenser, close to the rear side of the cabinet 1, a second receiving cavity 104 is provided on the front side of the compressor chamber 103, thereby increasing the placement space for items inside the cabinet 1 and increasing the display area of ​​items inside the cabinet 1.

[0070] 4. By setting a thermostat to detect the internal temperature of cabinet 1, the controller controls the speed of cross-flow fan 3 according to the detection information of the thermostat, so that cross-flow fan 3 can adjust the speed according to actual needs. When the temperature is too high, the fan speed is increased to enhance cooling, and when the temperature is too low, the fan speed is reduced to avoid overcooling, thereby achieving precise refrigeration control and ensuring the quality of the goods.

[0071] 5. By installing a heating element on cabinet door 2, the heating element heats the door body, thereby preventing condensation from forming due to the large temperature difference between the two sides of cabinet door 2, and avoiding the impact of condensation on the display effect of cabinet door 2; and by setting the thermostat to two probes to detect the temperature inside and outside of cabinet 1 respectively, the controller controls the working state of the heating element according to the temperature difference information, so that the heating element starts heating when the temperature difference is large and stops working when the temperature difference is small, realizing the on-demand operation of the heating element and effectively avoiding energy waste.

[0072] 6. By enabling the cross-flow fan 3 to rotate in both directions and installing a magnetic switch 6 on the door, the magnetic switch 6 detects the state of the cabinet door 2. The controller then controls the rotation direction of the cross-flow fan 3 based on the detection information from the magnetic switch 6. When the cabinet door 2 is open, airflow is directed from the first air vent 105 to the first receiving cavity 102 and the second receiving cavity 104, thus forming an air curtain inside the cabinet 1 to protect the items placed inside. When the cabinet door 2 is closed, airflow is directed from the second air vent 106 to the first receiving cavity 102 and the second receiving cavity 104, thereby ensuring good refrigeration in the first receiving cavity 102 and the second receiving cavity 104.

[0073] 7. A baffle 5 is installed at the first air vent 105 located at the top of the cabinet 1, so that the baffle 5 divides the first air vent 105 into two independent air outlet areas, effectively improving the airflow distribution and making the airflow passing through the first air vent 105 more uniform and stable.

[0074] 8. By making the air duct plate 11 vertically arranged along the height direction of the cabinet 1, the dimensions of the first receiving cavity 102 are consistent in the height direction of the cabinet 1, thereby further increasing the display space.

[0075] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0076] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. An air curtain cabinet, characterized in that, include: The cabinet has an internally defined air duct and a first receiving cavity, which are separated from each other. The air duct is located at the rear of the first receiving cavity. The air duct has a first air outlet and a second air outlet, which are respectively connected to the first receiving cavity. The first air outlet is located at the top of the cabinet, and the height of the second air outlet is lower than the height of the first air outlet. The front of the cabinet has an opening that communicates with the first receiving cavity. A cabinet door is provided at the opening of the first receiving cavity in an openable and closable manner for opening or closing the first receiving cavity; A cross-flow fan is installed inside the air duct and near the top of the cabinet; the axis of the cross-flow fan is arranged in the horizontal direction. An evaporator is located inside the air duct, below the cross-flow fan, and near the rear side of the cabinet.

2. The air curtain cabinet according to claim 1, characterized in that, The bottom of the cabinet also defines a mutually isolated compressor chamber and a second receiving cavity. The compressor chamber is used to house the compressor and / or condenser. The compressor chamber is located near the rear side of the cabinet. The second receiving cavity is located on the front side of the compressor chamber. The top of the second receiving cavity communicates with the first receiving cavity.

3. The air curtain cabinet according to claim 1, characterized in that, The first air vent is positioned downwards, and a baffle is provided at the first air vent to divide the first air vent into two parallel parts.

4. The air curtain cabinet according to claim 1, characterized in that, The air duct includes a first air duct section and a second air duct section, which are interconnected. The first air duct section is arranged along the front-to-back direction of the cabinet and is located at the top of the cabinet. The second air duct section is arranged along the height direction of the cabinet. The first air outlet is located in the first air duct section, and the second air outlet is located in the second air duct section. The cross-flow fan is located at the connection between the first air duct section and the second air duct section. The evaporator is located within the second air duct section.

5. The air curtain cabinet according to claim 4, characterized in that, The cabinet is equipped with an air duct plate, which is used to separate the second air duct section from the first receiving cavity; the air duct plate is vertically arranged along the height direction of the cabinet.

6. The air curtain cabinet according to claim 1, characterized in that, The cross-flow fan can rotate forward and reverse. When the cabinet door is closed, the cross-flow fan rotates forward, causing the airflow in the duct to blow from the second air outlet to the first receiving cavity, and causing the airflow in the first receiving cavity to enter the duct through the first air outlet. When the cabinet door is open, the cross-flow fan rotates in reverse, causing the airflow in the duct to blow from the first air outlet to the first receiving cavity, and causing the airflow in the first receiving cavity to enter the duct through the second air outlet.

7. The air curtain cabinet according to claim 1, characterized in that, It also includes a controller connected to the cross-flow fan to control the operation of the cross-flow fan.

8. The air curtain cabinet according to claim 7, characterized in that, The cabinet door is equipped with a magnetic switch, which is used to detect the opening and closing status of the cabinet door; the magnetic switch is connected to the controller so that the controller controls the direction of the cross-flow fan according to the detection information of the magnetic switch.

9. The air curtain cabinet according to claim 7, characterized in that, The cabinet is equipped with a thermostat for detecting the temperature inside the cabinet. The thermostat is connected to the controller so that the controller controls the speed of the cross-flow fan based on the detection information from the thermostat.

10. The air curtain cabinet according to claim 9, characterized in that, The cabinet door is a glass door, and a heating element is installed on the cabinet door for heating the cabinet door; the heating element is connected to the controller; the temperature controller includes two probes, which are used to detect the temperature inside and outside the cabinet; the controller controls the heating element to work based on the detection information from the temperature controller.

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