CN112137349A

CN112137349A - Air curtain cabinet

Info

Publication number: CN112137349A
Application number: CN201910569366.3A
Authority: CN
Inventors: 尚鑫; 侯代民; 徐磊; 刘飞; 高秀森
Original assignee: Qingdao Haier Special Refrigerator Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Special Refrigerator Co Ltd; Haier Smart Home Co Ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-12-29

Abstract

The invention discloses an air curtain cabinet, comprising: the cabinet body is internally provided with a storage cavity and a machine cabin which are vertically arranged; the air channel comprises a first cover plate and a second cover plate which are arranged in the storage cavity, the first cover plate and the rear wall of the storage cavity form a first air supply channel, and the second cover plate and the top wall of the storage cavity form a second air supply channel; the refrigerating unit comprises a shell, a compressor, a condenser, a throttling device and an evaporator, wherein an evaporation cavity and a mounting cavity are arranged in the shell; the shell is provided with an air outlet and an air return inlet; the shell is arranged in the machine bin, the air outlet is communicated with the first air supply channel, the air return inlet is communicated with the storage cavity, and the through-flow fan is arranged in the air outlet. The air flow output by the cross flow fan can be conveyed to a longer distance along the air duct, so that the air flow with higher air speed output by the air duct is ensured to form a uniform air curtain, and the refrigeration effect is improved.

Description

Air curtain cabinet

Technical Field

The invention belongs to the technical field of refrigeration equipment, and particularly relates to an air curtain cabinet.

Background

The cabinet body of the air curtain cabinet is of an open structure, air is supplied downwards from the top by utilizing an air duct in the cabinet body, and an air curtain is formed on the front surface of the cabinet body to refrigerate articles in the cabinet body. For example, chinese patent No. 201621400981.X discloses an air curtain cabinet, wherein an evaporator and an axial flow fan are arranged at the bottom of a cabinet body forming a display cavity 11 to realize the supply of cold air into an air duct. However, in the practical use process, it is found that the air speed is low after the airflow generated by the axial flow fan blows to the evaporator, the air outlet speed of the air curtain formed by the air outlet of the air duct is low, and the uniform air curtain cannot be formed, so that the refrigeration effect is poor. The invention relates to an air curtain cabinet with good refrigeration effect, which aims to solve the technical problem.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention provides the air curtain cabinet, which realizes long-distance uniform air supply by arranging the cross-flow fan in the air outlet so as to ensure that air flow with higher air speed output by an air channel forms a uniform air curtain and improve the refrigeration effect.

In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:

the invention provides an air curtain cabinet, comprising: the front surface of the cabinet body is of an open structure, and a storage cavity and a machine cabin which are arranged up and down are formed in the cabinet body; the air duct comprises an air duct cover plate arranged in the storage cavity, a first air supply channel is formed between the air duct cover plate and the rear wall of the storage cavity, a second air supply channel is formed between the air duct cover plate and the top wall of the storage cavity, the first air supply channel is communicated with the second air supply channel, and the second air supply channel is provided with a first cold air outlet used for forming an air curtain on the front surface of the cabinet body; the refrigerating unit comprises a shell, and a compressor, a condenser, a throttling device and an evaporator which are connected together, wherein an evaporation cavity and a mounting cavity are arranged in the shell, the compressor and the condenser are positioned in the mounting cavity, and the evaporator is arranged in the evaporation cavity; the shell is provided with an air outlet and an air return inlet which are communicated with the evaporation cavity; the shell is arranged in the machine cabin, the air outlet is communicated with the first air supply channel, the air return inlet is communicated with the storage cavity, a cross-flow fan is arranged in the air outlet, and a condensation fan is arranged in the installation cavity.

Further, the wind channel apron includes first apron and second apron, first apron with the rear wall of storing cavity forms first air supply channel, the second apron with the roof of storing cavity forms second air supply channel, first apron is provided with a plurality of second air conditioning exports.

Furthermore, the top of the shell is provided with the air outlet and the air return inlet, and the peripheries of the air outlet and the air return inlet are provided with sealing rings; the bottom of machine storehouse is provided with lifting unit, lifting unit is used for the drive the shell goes up and down.

Further, the lifting assembly comprises: the supporting frame is arranged at the bottom of the machine cabin; the two rotating rods are rotatably arranged on the supporting frame, and the rotating rods are provided with turnover plates; wherein the shell is placed above the two turnover plates.

Furthermore, the support frame is also provided with two guide plates which are oppositely arranged, a guide space for guiding the shell to slide is formed between the two guide plates, and the turnover plate is positioned between the two guide plates.

Further, the shell comprises a shell body and a heat preservation component arranged in the shell body, and the heat preservation component divides the inner part of the shell body into the evaporation cavity and the installation cavity.

Further, the evaporation cavity and the mounting cavity are arranged up and down; the heat preservation part comprises a bottom plate and side plates distributed along the edge of the bottom, and the evaporation cavity is formed between the heat preservation part and the top of the shell.

Furthermore, a concave structure is formed in the middle of the bottom plate, the compressor and the condenser are located on the same side of the concave structure, and the condensing fan is located on the inner side of the condenser; along the airflow flowing direction formed by the condensation fan, heat dissipation air ports are respectively arranged on the corresponding side plates of the shell, an air duct gradually-reducing section and an air duct gradually-expanding section are sequentially formed between the bottom plate and the bottom of the shell, the cross-sectional area of the air duct gradually-expanding section is gradually increased, and the cross-sectional area of the air duct gradually-reducing section is gradually reduced.

Furthermore, a water pan is arranged at the bottom of the shell, a drain pipe is arranged at the bottom of the concave structure and extends into the water pan, and a connecting pipe between the compressor and the condenser is located in the water pan.

Furthermore, the bottom of the storage cavity is provided with a first communicating port and a second communicating port, the air outlet is communicated with the first air supply channel through the first communicating port, the air return port is communicated with the second communicating port, and an auxiliary fan is further arranged in the second communicating port.

Compared with the prior art, the invention has the advantages and positive effects that: the cross-flow fan is arranged in the air outlet to realize air return, the characteristics that the air supply distance of the cross-flow fan is long but the air outlet range is small are utilized, the cross-flow fan can output air flow towards the air channel in a small range at the air outlet, the cross-flow fan can uniformly output air along the axis of the cross-flow fan, the output air flow can be conveyed to a long distance along the air channel, the air flow with high air speed output by the air channel is ensured to form a uniform air curtain, and the refrigerating effect is improved.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of an air curtain cabinet according to the present invention;

FIG. 2 is a schematic structural view of an air curtain cabinet according to the present invention;

FIG. 3 is a schematic structural view of a cabinet body in the air curtain cabinet of the present invention;

FIG. 4 is a schematic view of a refrigeration unit of the air curtain cabinet of the present invention;

FIG. 5 is a schematic view of a portion of the refrigeration unit of the air curtain cabinet of the present invention;

FIG. 6 is a schematic view of the lifting assembly of the air curtain cabinet of the present invention;

FIG. 7 is a cross-sectional view of the refrigeration unit of the air curtain cabinet of the present invention;

fig. 8 is a second schematic diagram of the structure of the air curtain cabinet of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples.

As shown in fig. 1 to 7, the air curtain cabinet of the embodiment includes: a cabinet body 1 and a refrigerating unit 2.

The cabinet body 1 can adopt a foaming cabinet body structure, the front surface of the cabinet body 1 is of an open structure, a partition 11 is arranged in the cabinet body 1, the partition 11 divides the interior of the cabinet body 1 into a storage cavity 101 and a machine cabin 102 which are arranged up and down, and a first communicating port 111 and a second communicating port 112 are arranged on the partition 11; in the air curtain cabinet adopting air cooling in a normal condition, an air duct 3 is configured in the cabinet body 1, and the air duct 3 is arranged in the storage cavity 101 and communicated with the first communication port 111; wherein, wind channel 3 is including setting up the wind channel apron in storing cavity 101, and the wind channel apron forms first air supply passageway with the rear wall of storing cavity 101, and the wind channel apron forms second air supply passageway with the roof of storing cavity 101, first air supply passageway and second air supply passageway intercommunication, and second air supply passageway has the first air conditioning export 301 that is used for forming the air curtain in the front of the cabinet body 1.

The refrigerating unit 2 comprises a shell 21 and a refrigerating system, wherein the refrigerating system comprises a compressor 22, a condenser 23, a throttling device (not shown) and an evaporator 24 which are connected together, an evaporation cavity 201 and a mounting cavity 202 are arranged in the shell 21, the compressor 22 and the condenser 23 are positioned in the mounting cavity 202, and the evaporator 24 is arranged in the evaporation cavity 201; the shell 21 is provided with an air outlet 211 and an air return opening 212 which are communicated with the evaporation cavity 201; the housing 21 is arranged in the machine cabin 102, the air outlet 211 is communicated with the first communication port 111, the air return port 212 is communicated with the second communication port 112, the cross-flow fan 241 is arranged in the air outlet 211, and the condensation fan 231 is arranged in the installation cavity 202

Specifically, the refrigeration system in the air curtain cabinet of the present embodiment is centrally installed in the housing 21, so that the evaporator 24 does not occupy the space inside the storage cavity 101, and since the evaporator 24 is not required to be installed in the air duct 3, correspondingly, the overall thickness of the air duct 3 is reduced, so that the volume of the storage cavity 101 is increased. In addition, as the cross-flow fan 241 is arranged in the air outlet 211 to realize air return, by utilizing the characteristics that the air supply distance of the cross-flow fan 241 is long but the air outlet range is small, the cross-flow fan 241 can output air flow towards the air channel 3 in a small range formed at the air outlet 211, the cross-flow fan 241 can uniformly output air along the axis of the cross-flow fan, and the output air flow can be conveyed to a long distance along the air channel 3, so that the air flow with high air speed output by the air channel is ensured to form a uniform air curtain, and the refrigeration effect is improved. Correspondingly, the evaporator 24 is arranged close to the return air inlet 212, so that the return air is output after being subjected to heat exchange through the evaporator 24, and the refrigeration efficiency is improved. Preferably, the air duct cover plate includes a first cover plate 31 and a second cover plate 32, the first cover plate 31 forms a first air supply channel with the rear wall of the storage cavity 101, the second cover plate 32 forms a second air supply channel with the top wall of the storage cavity 101, the first air supply channel is communicated with the second air supply channel, and the second air supply channel has a first cold air outlet 301 for forming an air curtain on the front surface of the cabinet 1. The first cover plate 31 is provided with a plurality of second cool air outlets 302, and cool air conveyed in the air duct 3 can be discharged out of the cabinet 1 through the second cool air outlets 302 in the flowing process, so as to ensure that the refrigeration temperature in the storage cavity 101 is uniformly distributed. For the specific forming manner of the first cold air outlet 301, the first cold air outlet 301 may be formed by directly forming a hole on the first cover plate 31; alternatively, a first cold air outlet 301 is formed between the outer edge of the first cover plate 31 and the top wall of the cabinet 1.

Because the housing 21 is installed in the machine cabin 102, the cold air formed after heat exchange by the evaporator 24 is output from the air outlet 211 and enters the air duct 3 through the first communication port 111, and finally the cold air is conveyed to the inside of the storage cavity 101 through the air duct 3 to refrigerate the articles; and the air in the storage cavity 101 enters the air return opening 212 through the second communication opening 112 to enter the evaporation cavity 201 to exchange heat with the evaporator 24. Thus, the air in the storage cavity 101 and the air in the evaporation cavity 201 can circularly flow. The cabinet body 1 is further provided with a return air casing 12, a vent 121 is provided at the front end of the return air casing 12, and the return air casing 12 covers the second communication port 112. Specifically, the return air casing 12 can shield the second communication port 112 on the partition 11, so as to prevent the second communication port 112 from being exposed to affect the user experience. Meanwhile, the vent 121 of the return air casing 12 may be disposed near the front of the cabinet 1, and the return air casing 12 may also serve as a shelf for holding articles during actual use.

Wherein, since the housing 21 is installed in the bottom cabin 102, the housing 21 needs to be connected with the inside of the storage cavity 101 through the first communication port 111 and the second communication port 112. In order to ensure that the outlet air and the return air cannot be leaked, the top of the shell 21 is provided with an air outlet 211 and a return air inlet 212; the air outlet 211 and the air return 212 are provided with sealing rings 25 at their peripheries, and the sealing rings 25 are squeezed between the casing 21 and the partition 11. Specifically, when the housing 21 is placed in the machine compartment 102, the air outlet 211 communicates with the first communication port 111, and similarly, the return air inlet 212 communicates with the second communication port 112. The seal ring 25 seals the connection region between the air outlet 211 and the first communication port 111, and similarly, the seal ring 25 seals the connection region between the return air inlet 212 and the second communication port 112.

Preferably, in order to make the sealing ring 25 perform a good sealing function, the bottom of the cabin 102 is provided with a lifting assembly 4, and the lifting assembly 4 is used for driving the shell 21 to lift. Specifically, after the housing 21 is loaded into the cabin 102, the housing 21 is lifted by the lifting assembly 4. After the housing 21 is raised in this way, the lifting packing 25 is pressed between the housing 21 and the partition 11, so that the outer ring of the communication port is satisfactorily sealed by the packing 25. The concrete entities of the lifting component 4 are in various forms, for example: the structure forms such as a lifting platform and the like can be adopted.

In order to reduce the manufacturing cost and facilitate the operation, the lifting assembly 4 includes: the supporting frame 41 and the two rotating rods 42 are arranged, and the supporting frame 41 is arranged at the bottom of the cabin 102; the rotating rod 42 is rotatably arranged on the support frame 41, and the rotating rod 42 is provided with a turnover plate 43; and the housing 21 is placed over the two flipping panels 43. Specifically, when the operator assembles the casing 21 into the cabin 102, the flipping plate 43 is in a horizontal state to ensure that the requirement that the casing 21 smoothly enters the cabin 102 in the height direction is met. And after the housing 21 enters the cabin 102, the housing 21 is located above the flipping plate 43, and the operator rotates the rotating lever 4242 to make the flipping plate 43 rotate and stand. During the rotation of the flap plate 43, the outer shell 21 will be lifted by the flap plate 43, eventually causing the gasket 25 to be squeezed between the outer shell 21 and the partition 11. For the convenience of assembly, the supporting frame 41 is further provided with two oppositely arranged guide plates 44, a guide space for guiding the sliding of the housing 21 is formed between the two guide plates 44, and the turnover plate 43 is located between the two guide plates 44. Specifically, in actual assembly, the housing 21 is placed between the two guide plates 44, and then the housing 21 is pushed so that the housing 21 is positioned above the flipping plate 43.

In addition, the cabinet body 1 may be integrally installed on the supporting frame 41, and in order to move the air curtain cabinet, rollers 45 are disposed at four corners of the supporting frame 41. Specifically, the supporting frame 41 is an integral bearing component, and the cabinet 1 and the refrigeration unit 2 are both mounted on the supporting frame 41. And the gyro wheel 45 of support frame 41 bottom configuration can be in user's in-service use, conveniently removes the position of adjusting the air curtain cabinet. Preferably, the front end of the supporting frame 41 is further provided with an adjusting foot 46. During movement of the air curtain cabinet, the adjustment feet 46 are adjusted upwardly and retracted to enable the air curtain cabinet to be moved by the rollers 45. After being moved into position, the adjustable feet 46 are adjusted downwardly and against the ground to position the air curtain cabinet to limit its movement.

Install the evaporimeter through the space that utilizes bottom machine storehouse, install in the shell in bottom machine storehouse with compressor and condenser together, the evaporimeter is not taking storage cavity's back space for the wind channel is only used for the air supply, and further the space that the wind channel occupy is reduced, with the storing ability of effectual reinforcing air curtain cabinet, realizes that the inside cavity of make full use of inner bag is used for the storing, with the volume of increase storage cavity, improves user experience nature.

Based on the above technical solution, optionally, in order to avoid mutual heat transfer influence between the evaporator 24 and the condenser 23 in the casing 21, the casing 21 includes a casing 213 and a heat preservation component 214 disposed in the casing 213, and the heat preservation component 214 divides the inside of the casing 213 into the evaporation cavity 201 and the installation cavity 202. Specifically, the heat-insulating member 214 can form the evaporation cavity 201 which is heat-insulated with respect to the installation cavity 202, so that on one hand, the dissipation of cold energy of the evaporator 2424 can be avoided, and on the other hand, the heat generated by the condenser 23 can be prevented from affecting the evaporation cavity 201.

The heat preservation component 214 forms an evaporation cavity 201 and a mounting cavity 202 which are arranged up and down in the shell 21, the heat preservation component 214 comprises a bottom plate and side plates distributed along the edge of the bottom plate, and the evaporation cavity 201 is formed between the heat preservation component 214 and the top of the shell 213. The evaporator 24 and the cross flow fan 241 are located above the heat retaining member 214, and the compressor 22, the condenser 23 and the condensing fan are located below the heat retaining member 214. In addition, in order to ensure that the condenser 23 can dissipate heat quickly and efficiently and meet the requirement of compact design, the condensing fan 231 is located inside the condenser 23 and arranged side by side with the compressor 22, so that the condensing fan 231 can directly blow air to dissipate heat of the condenser 23.

In the installation cavity 202 with limited space, in order to ensure normal heat dissipation of the compressor 22 at the same time, the bottom plate of the heat preservation component 214 is of a concave plate-shaped structure, that is, the middle part of the bottom plate of the heat preservation component 214 forms a concave structure, and the compressor 22 and the condenser 23 are located on the same side of the concave structure; along the airflow flowing direction formed by the condensing fan, the corresponding side plates of the shell 213 are respectively provided with a heat dissipation air port, an air duct gradually-reducing section and an air duct gradually-expanding section are sequentially formed between the bottom plate and the bottom of the shell 213, the sectional area of the air duct 3 gradually-expanding section is gradually increased, and the sectional area of the air duct 3 gradually-reducing section is gradually reduced. Specifically, referring to the airflow direction indicated by the dotted line in fig. 7, after the condensing fan is started, since the outside air is sucked into the casing 21, the airflow is blocked by the concave structure of the heat insulating member 214 during the transportation through the tapered section of the air duct, and the airflow is distributed along the cross section perpendicular to the airflow. After the outside air enters the air duct gradually-expanding section through the air duct gradually-expanding section, for the compressor 22 located on the side of the condensing fan, the air flow also passes through to dissipate heat of the compressor 22. In this way, it is possible to satisfy the need for a more compact arrangement of the compressor 22 and the condenser 23 in the limited space inside the casing 21, and at the same time, to satisfy the heat dissipation requirements of the compressor 22, ensuring a normal and reliable operation of the system.

In order to facilitate the installation of the insulating member 214, a column 215 is provided on the bottom of the housing 213, and the insulating member 214 is installed on the top of the column 215. Specifically, the heat insulating member 214 is supported by the column 215 so that the inside of the casing 213 is partitioned into the evaporation chamber 201 and the installation chamber 202 arranged up and down by the heat insulating member 214.

The evaporator 24 is required to be defrosted after a certain period of use. Correspondingly, a drain hole 2140 is arranged at the bottom of the concave structure, a water receiving tray 216 is arranged at the bottom of the shell 213, and a drain pipe is connected to the drain hole 2140 and extends into the water receiving tray 216. During defrosting, the defrosting water formed by defrosting of the evaporator 24 is collected in the concave structure and flows into the water pan 216 through the drain pipe. Wherein, the water pan 216 is further disposed with a connecting pipe 26 for connecting the compressor 22 and the condenser 23, the high temperature refrigerant discharged from the compressor 22 is input into the condenser 23 through the connecting pipe 26, and the heat released by the connecting pipe 26 can accelerate the evaporation of the water in the water pan 216, so that the user does not need to treat the defrosting water. In addition, a pressing plate 27 is further arranged in the water pan 216, the connecting pipe 26 is located between the pressing plate 27 and the bottom of the water pan 216, the pressing plate 27 can be used for positioning the connecting pipe 26, and the phenomenon that the connecting pipe 26 shakes to generate noise due to vibration generated by exhaust of the compressor 22 is avoided.

As shown in fig. 8, in order to ensure more efficient return air, an auxiliary fan 10 may be further provided in the second communication port 112. Specifically, the auxiliary blower 10 is located below the return air casing 12, and the auxiliary blower 10 may be an axial fan or a centrifugal fan, so that the return air is more efficient.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. An air curtain cabinet, comprising:

the front surface of the cabinet body is of an open structure, and a storage cavity and a machine cabin which are arranged up and down are formed in the cabinet body;

the air duct comprises an air duct cover plate arranged in the storage cavity, a first air supply channel is formed between the air duct cover plate and the rear wall of the storage cavity, a second air supply channel is formed between the air duct cover plate and the top wall of the storage cavity, the first air supply channel is communicated with the second air supply channel, and the second air supply channel is provided with a first cold air outlet used for forming an air curtain on the front surface of the cabinet body;

the refrigerating unit comprises a shell, and a compressor, a condenser, a throttling device and an evaporator which are connected together, wherein an evaporation cavity and a mounting cavity are arranged in the shell, the compressor and the condenser are positioned in the mounting cavity, and the evaporator is arranged in the evaporation cavity; the shell is provided with an air outlet and an air return inlet which are communicated with the evaporation cavity;

the shell is arranged in the machine cabin, the air outlet is communicated with the first air supply channel, the air return inlet is communicated with the storage cavity, a cross-flow fan is arranged in the air outlet, and a condensation fan is arranged in the installation cavity.

2. The air curtain cabinet as claimed in claim 1, wherein the duct cover includes a first cover and a second cover, the first cover and the rear wall of the storage chamber form the first air supply channel, the second cover and the top wall of the storage chamber form the second air supply channel, and the first cover is provided with a plurality of second cold air outlets.

3. The air curtain cabinet as claimed in claim 1, wherein the top of the housing is provided with the air outlet and the air return inlet, and the peripheries of the air outlet and the air return inlet are provided with sealing rings; the bottom of machine storehouse is provided with lifting unit, lifting unit is used for the drive the shell goes up and down.

4. The air curtain cabinet of claim 3, wherein the lift assembly comprises:

the supporting frame is arranged at the bottom of the machine cabin;

the two rotating rods are rotatably arranged on the supporting frame, and the rotating rods are provided with turnover plates;

wherein the shell is placed above the two turnover plates.

5. The air curtain cabinet as claimed in claim 4, wherein the supporting frame is further provided with two oppositely arranged guide plates, a guide space for guiding the sliding of the housing is formed between the two guide plates, and the turning plate is located between the two guide plates.

6. The air curtain cabinet of claim 1 wherein the enclosure includes a housing and a thermal insulating member disposed in the housing, the thermal insulating member separating an interior portion of the housing into the evaporation cavity and the mounting cavity.

7. The air curtain cabinet as recited in claim 6, wherein the evaporation cavity and the mounting cavity are arranged one above the other; the heat preservation part comprises a bottom plate and side plates distributed along the edge of the bottom, and the evaporation cavity is formed between the heat preservation part and the top of the shell.

8. The air curtain cabinet as claimed in claim 7, wherein the bottom plate forms a recessed structure in a middle portion thereof, the compressor and the condenser are located on a same side of the recessed structure, and the condensing fan is located inside the condenser; along the airflow flowing direction formed by the condensation fan, heat dissipation air ports are respectively arranged on the corresponding side plates of the shell, an air duct gradually-reducing section and an air duct gradually-expanding section are sequentially formed between the bottom plate and the bottom of the shell, the cross-sectional area of the air duct gradually-expanding section is gradually increased, and the cross-sectional area of the air duct gradually-reducing section is gradually reduced.

9. The air curtain cabinet as claimed in claim 8, wherein a water pan is provided at a bottom of the housing, a drain pipe is provided at a bottom of the recess structure, the drain pipe extends into the water pan, and a connection pipe between the compressor and the condenser is located in the water pan.

10. The air curtain cabinet as claimed in claim 1, wherein a first communicating opening and a second communicating opening are provided at a bottom of the storage chamber, the air outlet is communicated with the first air supply channel through the first communicating opening, the air return opening is communicated with the second communicating opening, and an auxiliary fan is further provided in the second communicating opening.