Air duct module and refrigeration equipment

Abstract

The utility model discloses an air duct module and refrigeration equipment. The air duct module comprises a shell, an evaporator, a fan and a heater. An air supply cavity and a first air return cavity are formed in the shell, and an opening communicating with the air supply cavity is formed in the lower end of the first air return cavity; the evaporator and the fan are arranged in the air supply cavity; the heater is arranged on the lower side of the air supply cavity, and at least part of the heater extends to the lower side of the opening; the opening faces downwards and is in a flaring shape in the flowing direction of gas.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of refrigeration equipment, and particularly relates to an air duct module and a refrigeration equipment. BACKGROUND

[0002] In recent years, more and more users choose to place refrigeration equipment in a dining room. The vertical middle system refrigeration equipment is relatively thin in thickness, more space-saving, and meets the user's use demand. However, the cold storage return air pipe of the vertical middle system may generate frost phenomenon in the pipe due to a large temperature difference between the cold storage chamber and the return air pipe, which affects the return air. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides an air duct module and a refrigeration equipment, which effectively improve the defrosting efficiency and prevent frost from affecting the return air effect of the return air pipe.

[0004] In a first aspect, the present application provides an air duct module, comprising:

[0005] a shell, wherein a supply air cavity and a first return air cavity are arranged in the shell, and a lower end of the first return air cavity is provided with an open mouth in communication with the supply air cavity;

[0006] an evaporator and a fan arranged in the supply air cavity;

[0007] a heater arranged on the lower side of the supply air cavity and extending at least partially to the lower side of the open mouth;

[0008] wherein the open mouth faces downward and is in the shape of an expanding mouth along the flow direction of the gas.

[0009] According to the air duct module of the present application, the heater extends at least partially to the lower side of the open mouth, and the lower side of the open mouth is designed in the shape of an expanding mouth, so that the heater can defrost the supply air cavity and the first return air cavity at the same time, improve the defrosting effect of the first return air cavity, and ensure the return air efficiency of the refrigeration cavity.

[0010] According to an embodiment of the present application, the supply air cavity extends along the height direction, and the open mouth is provided with a guide wall near the side close to the supply air cavity, and the guide wall has a tendency to tilt from top to bottom along the direction close to the supply air cavity.

[0011] According to an embodiment of the present application, the heater comprises a heating pipe, and at least a part of the heating pipe extends to the lower side of the open mouth.

[0012] According to an embodiment of the present application, the part of the heating pipe extending to the lower side of the open mouth has a heating section extending along the height direction.

[0013] According to an embodiment of the present application, a heat-conducting member is connected to the heater, and the heat-conducting member extends into the first return air cavity.

[0014] According to one embodiment of the present application, the upper end of the first return air cavity is provided with a first return air opening, and the upper end of the first return air cavity is provided with a first heat preservation member close to one side of the air supply cavity.

[0015] According to one embodiment of the present application, the side wall of the shell is provided with a second heat preservation member, and the thickness of the first heat preservation member is greater than the thickness of the second heat preservation member.

[0016] According to one embodiment of the present application, the outer side wall of the side of the first return air cavity away from the air supply cavity is provided with a heating member, and the heater and the heating member are synchronously switched on.

[0017] In a second aspect, the present application provides a refrigeration device, which comprises:

[0018] a cabinet and a door body, the cabinet is provided with a refrigeration cavity;

[0019] The air duct module according to any one of the technical solutions in the first aspect is arranged in the refrigeration cavity, and the first return air cavity is in communication with the refrigeration cavity.

[0020] The refrigeration device provided in the second aspect of the present application has the same beneficial effects as the air duct module provided in the first aspect of the present application, and will not be described here.

[0021] According to one embodiment of the present application, the refrigeration cavity comprises a first refrigeration cavity and a second refrigeration cavity distributed along the height direction, the first refrigeration cavity is arranged on the upper side of the second refrigeration cavity, the air duct module is arranged in the second refrigeration cavity, the upper end of the first return air cavity is in communication with the first refrigeration cavity, the air supply cavity and the lower side of the first return air cavity are provided with a second return air cavity, the second return air cavity is in communication with the second refrigeration cavity, and the heater is arranged in the second return air cavity.

[0022] According to one embodiment of the present application, the thickness W of the refrigeration device in the depth direction of the first refrigeration cavity satisfies:

[0023] 450mm≤W≤600mm; and / or,

[0024] The thickness S of the door body satisfies:

[0025] 25mm≤S≤40mm.

[0026] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description of embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0027] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the description of embodiments of the present application, taken in conjunction with the following drawings in which:

[0028] Figure 1 is a partial structure schematic diagram of the refrigeration device provided by the embodiments of the present application;

[0029] Figure 2 is Figure 1 is a sectional view at A-A in FIG. 1;

[0030] Figure 3 is a partial sectional structural schematic diagram of a refrigeration equipment provided by an embodiment of the present application;

[0031] Figure 4 is a partial structural schematic diagram of an air duct module provided by an embodiment of the present application;

[0032] Figure 5 is a sectional structural schematic diagram of an air duct module provided by an embodiment of the present application.

[0033] Reference signs:

[0034] 1000, refrigeration equipment;

[0035] 100, cabinet; 110, inner container; 101, first refrigeration cavity; 102, second refrigeration cavity; 120, compressor chamber; 300, door body;

[0036] 200, air duct module; 210, shell; 211, air supply cavity; 212, first return air cavity; 2121, open mouth; 2122, guide wall; 213, second return air cavity; 214, heat preservation cavity; 215, containing cavity; 216, wiring hole; 217, containing groove; 218, baffle; 220, heating element; 221, heating wire; 222, connecting wire; 223, wiring terminal; 230, heater; 231, heating section; 240, first heat preservation element; 250, evaporator; 260, fan. DETAILED DESCRIPTION

[0037] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0038] Reference is made below to Figures 1-5 to describe the refrigeration equipment and the air duct module according to the embodiments of the present application.

[0039] Please refer to Figure 1 , the refrigeration equipment 1000 provided by the embodiments of the present application includes a cabinet 100, a door body 300 and an air duct module 200.

[0040] The refrigeration equipment 1000 provided by the embodiments of the present application can be a side cabinet, a refrigerator, a freezer or a wine cabinet, etc., and is not specifically limited.

[0041] The cabinet 100 is provided with a refrigeration cavity and a compressor chamber 120 arranged at intervals.

[0042] The cabinet 100 comprises an outer shell, an inner container 110 is arranged in the outer shell, and a heat preservation layer is arranged between the outer shell and the inner container 110. The outer shell can be made of metal (such as steel plate), the surface of which is treated by paint spraying to prevent rust and has a certain aesthetic appearance. The heat preservation layer is located between the inner side of the outer shell and the inner container 110, can be polyurethane foam, has good heat insulation performance, and can effectively prevent heat exchange between the inside and outside to keep the internal temperature stable. The inner container 110 is the part directly contacting the stored objects, and is generally made of ABS plastic or stainless steel material, which is required to be non-toxic and easy to clean. An inner part of the inner container 110 forms a refrigeration cavity for accommodating the stored objects.

[0043] A drawer can be arranged in the refrigeration cavity. The drawer is slidably installed in the refrigeration cavity, and helps users to store different types of stored objects by arranging the drawer, thereby improving the use convenience. Independent temperature control can be provided for different drawers to meet the optimal storage temperature of different foods. The drawer is usually detachable, and users can easily take it out for cleaning to maintain the hygiene of the inside of the refrigerator. The drawer is also convenient for setting multiple functional partitions, such as an egg shelf, a seasoning box and the like, to facilitate users to store various small items.

[0044] The refrigeration cavity can comprise a refrigeration chamber and a freezing chamber, or only one of the refrigeration chamber and the freezing chamber. The temperatures of different chambers are different, and the functions are different. The different temperature ranges of the refrigeration chamber and the freezing chamber can be adjusted by a temperature control device arranged in the cabinet 100 or outside.

[0045] Please refer to Figure 1 According to some embodiments of the present application, the refrigeration cavity can comprise a first refrigeration cavity 101 and a second refrigeration cavity 102 distributed along the height direction. The first refrigeration cavity 101 is arranged on the upper side of the second refrigeration cavity 102, and the air duct module 200 is arranged in the second refrigeration cavity 102.

[0046] Taking the refrigeration equipment 1000 as an example of a side-by-side cabinet with a vertical centering system, the refrigeration cavity can comprise a first refrigeration cavity 101 arranged on the upper side and a second refrigeration cavity 102 arranged on the lower side. By arranging the first refrigeration cavity 101 and the second refrigeration cavity 102, multiple temperature storage partitions can be realized. According to the conventional design of the refrigeration equipment 1000, the first refrigeration cavity 101 can be a refrigeration chamber with a relatively high temperature, used for storing stored objects that need to be refrigerated and fresh, and the second refrigeration cavity 102 can be a freezing chamber with a relatively low temperature, used for storing stored objects that need to be frozen for a long time. By arranging the air duct module 200 in the second refrigeration cavity 102, the cold air circulation path between the air duct module 200 and the second refrigeration cavity 102 is shorter, and the cold air circulation path between the air duct module 200 and the first refrigeration cavity 101 is longer, which facilitates temperature differentiation.

[0047] The door body 300 also comprises a three-layer structure of an outer shell, thermal insulation material and inner lining, to ensure good sealing and thermal insulation effect. The door body 300 can be connected to the box body 100 through a hinge structure, allowing the door to open and close freely. The door body 300 can be a single-door or a double-door, and the single-door can also have the function of adjusting the opening direction left and right. A sealing strip can be installed at the edge of the door body 300, which tightly fits with the box body 100 to prevent cold air leakage, and cooperates with the box body 100 to seal the refrigeration cavity.

[0048] The compressor compartment 120 is arranged outside the inner container 110 and is used to accommodate the compressor, condenser, main control board and other related components. The compressor compartment 120 is designed with a ventilation hole or a fan to ensure that the heat generated by the compressor during operation can be effectively dissipated to avoid overheating damage. At the same time, the compressor compartment 120 isolates the compressor from other condensing components, reduces heat transfer to the inside of the refrigerator, improves refrigeration efficiency, and also improves electrical safety to prevent electric shock accidents. Specifically, because the compressor and other devices are heavy, the compressor compartment 120 is arranged at the bottom of the box body 100 to lower the center of gravity of the refrigeration equipment 1000, improve the stability of placement, and also reduce the impact of compressor vibration.

[0049] Please refer to Figure 2 and Figure 3 , the application also provides a air duct module 200, the air duct module 200 includes shell 210, fan 260, evaporator 250 and heating piece 220.

[0050] The air duct module 200 includes a shell 210 installed in the refrigeration cavity, the shell 210 is provided with a supply air cavity 211 and a first return air cavity 212, the fan 260 and the evaporator 250 are arranged in the supply air cavity 211, and the heating piece 220 is arranged on the side wall of the side of the first return air cavity 212 away from the supply air cavity 211. One end of the heating piece 220 is connected to the compressor compartment 120.

[0051] The shell 210 can be made of metal material to have good mechanical strength and corrosion resistance, or can be made of composite material to have good corrosion resistance, light weight and good thermal insulation, which not only reduces the weight of the entire air duct module 200, but also improves the thermal insulation effect and reduces energy consumption. The fan 260 is used to drive the circulation of cold air in the refrigeration cavity and the shell 210 to improve the refrigeration efficiency, and the evaporator 250 is used to absorb heat to achieve the refrigeration effect. The fan 260 and the evaporator 250 can be fixed in the shell 210 through a support to ensure their stability and reliability.

[0052] The shell 210 is provided with a supply air cavity 211 and a first return air cavity 212, the fan 260 and the evaporator 250 are arranged in the supply air cavity 211, the supply air cavity 211 is communicated with the refrigeration cavity to supply cold air to the refrigeration cavity, the first return air cavity 212 is also communicated with the refrigeration cavity to return the hot air in the refrigeration cavity, the supply air cavity 211 and the first return air cavity 212 are at least partially separated to avoid the air flow in the supply air cavity 211 and the first return air cavity 212 affecting each other, and the supply air cavity 211 and the first return air cavity 212 are communicated with each other, so that the hot air in the first return air cavity 212 can enter the supply air cavity 211 to exchange heat with the evaporator 250, and then be output to the refrigeration cavity by the driving of the fan 260.

[0053] The first return air cavity 212 can be communicated with the first refrigeration cavity 101 to serve as a return air duct of the first refrigeration cavity 101, or can be communicated with the second refrigeration cavity 102 to serve as a return air duct of the second refrigeration cavity 102. It can be understood that because the cold source of the air duct module 200 is arranged in the supply air cavity 211, there is a temperature difference between the air recovered to the first return air cavity 212 and the supply air cavity 211, and there is a probability of frosting, especially when the first return air cavity 212 is communicated with the first refrigeration cavity 101, that is, the first return air cavity 212 is communicated with the refrigeration chamber, the temperature in the refrigeration chamber is relatively high, and the probability of frosting in the first return air cavity 212 is greatly increased.

[0054] The heating element 220 is arranged on the side wall of the first return air cavity 212 away from the supply air cavity 211, so that when the system defrosts, the heating element 220 is turned on to heat and defrost the side wall of the first return air cavity 212 away from the supply air cavity 211, improve the defrosting efficiency and effect of the first return air cavity 212, reduce the influence of frosting on the return air efficiency of the first return air cavity 212, and improve the return air stability.

[0055] One end of the heating element 220 is connected to the press compartment 120, specifically, one end of the heating element 220 can be directly connected to the main control board in the press compartment 120. Because the heating element 220 is arranged on the side of the first return air cavity 212 away from the supply air cavity 211, it can be understood that the devices in the air duct module 200 are generally arranged in the supply air cavity 211, and connecting the heating element 220 with the connector arranged in the air duct module 200 not only complicates the wiring, but also increases the production and design cost and affects the transmission efficiency. By directly connecting the heating element 220 to the press compartment 120, the complexity of the line connection is greatly simplified, the signal transmission path is shortened, the heating element 220 is directly controlled by the main control board to work, the transmission efficiency is improved, the connection stability is improved, and the use stability of the whole system is further improved.

[0056] According to the refrigeration equipment 1000 provided by the embodiment of the present application, the heating element 220 is arranged on the side of the first return air cavity 212 away from the air supply cavity 211, so as to heat the side wall of the first return air cavity 212 during defrosting, thereby quickly defrosting the first return air cavity 212, improving the defrosting efficiency, directly connecting the heating element 220 to the compressor compartment 120, improving the reliability of system connection, simplifying the circuit design and wiring, and improving the reliability of the system and the stability of signal transmission.

[0057] Please refer to Figure 3 According to some embodiments of the present application, at least part of the heating element 220 can be arranged on the outer side wall of the first return air cavity 212 away from the air supply cavity 211.

[0058] At least part of the heating element 220 is arranged on the outer side wall of the first return air cavity 212 to ensure the heating effect on the first return air cavity 212. By arranging the heating element 220 on the outer side wall of the first return air cavity 212, the heating element 220 can be prevented from directly contacting the air or moisture in the return air cavity, reducing the risk of short circuit and electric shock. There may be moisture and corrosive substances in the interior of the first return air cavity 212, and arranging the heating element 220 on the outside can reduce the corrosion of these substances on the heating element 220, prolonging the service life of the heating element 220. The heating element 220 is on the outside and is not directly impacted by the airflow in the pipe, reducing mechanical wear and improving the durability of the heating element 220. At the same time, the influence of the heating element 220 on the return air flow is also reduced. In addition, the heating element 220 is on the outside, which is more convenient for design and installation, reducing complex internal wiring and fixing devices. Moreover, if replacement or maintenance is required, the heating element 220 can be directly operated without the need to disassemble the return air pipe, simplifying the maintenance process.

[0059] Please refer to Figure 2 and Figure 3 According to some embodiments of the present application, the first return air cavity 212 can extend in the height direction, the lower end of the air supply cavity 211 can be in communication with the lower end of the first return air cavity 212, and the heating element 220 is arranged on the upper part of the first return air cavity 212.

[0060] With the first return air cavity 212 in communication with the first refrigeration cavity 101 as an example, because of the principle of cold air sinking, the return air inlet of a single refrigeration cavity is generally arranged on the lower side of the refrigeration cavity, that is, the return air inlet of the first refrigeration cavity 101 is generally arranged on the lower side of the first return air cavity 212, and the return air inlet of the second refrigeration cavity 102 is also arranged on the lower side of the second refrigeration cavity 102. Because the air duct module 200 is arranged in the second refrigeration cavity 102, so that the first return air cavity 212 is located on the lower side of the first refrigeration cavity 101, when the first return air cavity 212 is the return air pipe of the first refrigeration cavity 101, the first return air cavity 212 needs to extend along the height direction, and the upper end thereof is in communication with the first refrigeration cavity 101, and the lower end thereof is in communication with the supply air cavity 211, so that the hot air in the first refrigeration cavity 101 and the hot air entering through the return air inlet at the lower part of the second refrigeration cavity 102 can enter the supply air cavity 211 through the lower part of the supply air cavity 211 together.

[0061] Therefore, when the hot air in the first refrigeration cavity 101 enters the first return air cavity 212 through the upper end of the first return air cavity 212, the temperature difference between the upper part of the first return air cavity 212 and the second refrigeration cavity 102 is the largest, and the risk of frosting is the highest. By arranging the heating element 220 on the upper part of the first return air cavity 212, the defrosting effect of the first return air cavity 212 is improved.

[0062] Please refer to Figure 3 and Figure 4 According to some embodiments of the present application, the heating element 220 can include a heating wire 221, a connecting wire 222 and a terminal 223.

[0063] The heating wire 221 is arranged on the outer side wall of the first return air cavity 212 away from the supply air cavity 211; one end of the connecting wire 222 is connected with the heating wire 221; and the terminal 223 is connected with the other end of the connecting wire 222 and is used to be connected with devices in the press compartment 120.

[0064] The heating wire 221 is used to generate heat required for defrosting. By arranging the heating wire 221 on the outer side wall of the first return air cavity 212, the first return air cavity 212 is heated and defrosted. The heating wire 221 can extend along the length direction of the first return air cavity 212 to improve the coverage of the heating wire 221 and improve the defrosting area and defrosting effect. Exemplarily, the heating wire 221 can be fixed on the outer side wall of the first return air cavity 212 by bonding.

[0065] One end of the connecting wire 222 is connected with the heating wire 221, and the other end is connected with the terminal 223, which is used to connect the heating wire 221 with a power supply or other control devices and transmit electrical signals.

[0066] The wiring terminal 223 can be arranged in the pressurized chamber 120 to directly connect with the main control board in the pressurized chamber 120, to ensure the stability of the connection between the heating element 220 and the main control board, and the main control board can deliver the control signal and power to the heating wire 221 through the wiring terminal 223 and the connecting wire 222.

[0067] Referring to Figure 3 and Figure 4 According to some embodiments of the present application, the bottom of the shell 210 can be provided with a wiring hole 216 in communication with the pressurized chamber 120, and the connecting wire 222 can pass through the wiring hole 216.

[0068] Because the shell 210 is arranged in the inner container 110, the pressurized chamber 120 is arranged outside the inner container 110, and the heating wire 221 is installed on the shell 210, the heating wire 221 is opposite to the pressurized chamber 120. In addition, the pressurized chamber 120 is arranged at the bottom of the cabinet 100, the wiring hole 216 is arranged at the bottom of the shell 210 to facilitate the connecting wire 222 to extend out of the shell 210 and the inner container 110, and the connecting wire 222 passes through the wiring hole 216 into the pressurized chamber 120, so that the heating wire 221 can be directly connected with the main control board in the pressurized chamber 120, and the wiring difficulty is simplified.

[0069] Referring to Figure 2 、 Figure 3 and Figure 4 According to some embodiments of the present application, the side of the first return air cavity 212 away from the air supply cavity 211 can be provided with a heat preservation cavity 214, the heating wire 221 can be arranged in the heat preservation cavity 214, the lower end of the shell 210 can be provided with a containing cavity 215 in communication with the heat preservation cavity 214, at least part of the connecting wire 222 is contained in the containing cavity 215, the side wall of the containing cavity 215 is provided with the wiring hole 216, and the wiring terminal 223 is arranged outside the containing cavity 215.

[0070] Because it is a vertical centering system, the air duct module 200 is arranged along the depth direction of the refrigeration cavity, thereby reducing the occupation in the thickness direction of the refrigeration equipment 1000 and reducing the overall thickness of the refrigeration equipment 1000. Therefore, in order to reduce the thickness of the air duct module 200 and reduce the occupation of the internal space of the refrigeration cavity, the air supply cavity 211 and the return air cavity are also distributed along the depth direction of the refrigeration cavity.

[0071] Specifically, the first return air cavity 212 extends in the height direction and is arranged at one side of the air supply cavity 211 close to the door body 300. Taking the side of the refrigeration equipment 1000 provided with the door body 300 as the front side as an example, the first return air cavity 212 is arranged at the front side of the air supply cavity 211. Because the temperature in the first return air cavity 212 is lower than the temperature outside the refrigeration equipment 1000, in order to reduce the risk of condensation on the front side of the air duct module 200, the side of the first return air cavity 212 away from the air supply cavity 211, that is, the front side of the first return air cavity 212, can be provided with a heat preservation cavity 214. The heat preservation cavity 214 can be provided with a heat preservation member to isolate the cold quantity of the first return air cavity 212 from the outer surface of the air duct module 200. The heating wire 221 is arranged on the outer surface of the first return air cavity 212 away from the air supply cavity 211, that is, on the inner wall of the return air cavity close to the first return air cavity 212.

[0072] It can be understood that the heat preservation cavity 214 also extends in the height direction. The accommodating cavity 215 in communication with the heat preservation cavity 214 is arranged at the lower end of the shell 210, and the wiring hole 216 is arranged on the accommodating cavity 215, so that the connecting line 222 of the heating wire 221 can extend downward along the inner wall in the heat preservation cavity 214 to the accommodating cavity 215, and then pass out to the outside of the shell 210 through the wiring hole 216 formed in the side wall of the accommodating cavity 215. The wiring terminal 223 is arranged outside the accommodating cavity 215, that is, in the press chamber 120 and connected with the connecting line 222, so as to finally realize the connection between the heating wire 221 and the main control board.

[0073] Referring to Figure 3 and Figure 4 According to some embodiments of the present application, the shell 210 can be provided with the accommodating groove 217 outside the accommodating cavity 215, and the accommodating groove 217 can be in communication with the accommodating cavity 215 through the wiring hole 216.

[0074] The accommodating groove 217 is arranged at the position of the shell 210 outside the accommodating cavity 215, and is used to accommodate the wiring terminal 223. When the air duct module 200 is assembled, the heating member 220 is pre-installed in the air duct module 200, the heating wire 221 is bonded to the inner wall of the heat preservation cavity 214, and the connecting line 222 is accommodated in the accommodating cavity 215 and connected with the wiring terminal 223 pre-installed in the accommodating groove 217. When the air duct module 200 is assembled, the air duct module 200 is first fixed to the inner container 110, the wiring terminal 223 in the accommodating groove 217 and the connecting line 222 in the accommodating cavity 215 are pulled out, and the wiring terminal 223 is inserted into the main control board, so as to greatly improve the assembly efficiency.

[0075] Referring to Figures 2-5 The present application also provides an air duct module 200, which comprises a shell 210, an evaporator 250, a fan 260 and a heater 230.

[0076] The difference between the air duct module 200 of the foregoing embodiment and the air duct module 200 of the present embodiment is that the lower end of the first return air cavity 212 is provided with an opening 2121 that is in communication with the air supply cavity 211, and the heater 230 is arranged on the lower side of the air supply cavity 211 and extends at least partially to the lower side of the opening 2121; wherein the opening 2121 is downwardly flared along the flow direction of the gas.

[0077] The lower end of the air supply cavity 211 is open to allow the heater 230 to face the internal space of the air supply cavity 211, so that when the system is defrosted, the hot gas generated by the heater 230 can heat and defrost the evaporator 250 upwardly. The lower end of the first return air cavity 212 is provided with an opening 2121 that is downwardly open, and at least part of the heater 230 extends to the lower side of the opening 2121, so that the hot gas generated by the heater 230 that faces the opening 2121 can enter the first return air cavity 212 through the opening 2121 to heat and defrost the first return air cavity 212, so that the heater 230 can simultaneously defrost the air supply cavity 211 and the first return air cavity 212, thereby improving the defrosting effect.

[0078] Because the first return air cavity 212 is arranged in a long and narrow shape, it is difficult to defrost at a high height. By arranging the opening 2121 to be flared along the flow direction of the gas, it should be noted that the flow direction of the gas is from the first return air cavity 212 to the air supply cavity 211, and the lower end of the first return air cavity 212 is provided with an opening 2121 that is in communication with the air supply cavity 211, so the flow direction of the gas is from top to bottom, that is, the opening 2121 is flared from top to bottom, thereby increasing the opening area of the end of the opening 2121 close to the heater 230 and increasing the area of the part of the opening 2121 facing the heater 230, so that more hot gas can enter the first return air cavity 212, thereby improving the defrosting effect of the first return air cavity 212 and improving the use stability of the air duct module 200.

[0079] According to the air duct module 200 provided by the embodiments of the present application, by arranging at least part of the heater 230 to extend to the lower side of the opening 2121 and designing the lower side of the opening 2121 to be flared, the heater 230 can simultaneously defrost the air supply cavity 211 and the first return air cavity 212, thereby improving the defrosting effect of the first return air cavity 212 and ensuring the return air efficiency of the refrigeration cavity.

[0080] Please refer to Figure 3 , Figure 4 and Figure 5 According to some embodiments of the present application, the air supply cavity 211 extends along the height direction, and the opening 2121 close to the air supply cavity 211 side has a guide wall 2122 that has a tendency to tilt in the direction close to the air supply cavity 211 from top to bottom.

[0081] The first return air cavity 212 and the air supply cavity 211 are provided with a baffle 218 extending along the height direction, so that the air supply cavity 211 and the first return air cavity 212 are spaced from each other. The lower end of the baffle 218 corresponds to the opening 2121 and is provided with a guide wall 2122. The guide wall 2122 is inclined downward along the direction close to the air supply cavity 211, so that the opening 2121 has an expanding trend along the gas flow direction (from top to bottom). The guide wall 2122 has a guiding effect on the heat generated by the heater 230 corresponding to the guide wall 2122, so that the heat generated by the heater 230 corresponding to the evaporator 250 can be introduced into the first return air cavity 212, thereby improving the heating effect of the first return air cavity 212 and improving the defrosting efficiency.

[0082] For example, the guide wall 2122 can be arc-shaped or inclined plate-shaped, and the specific shape is not limited. At least part of the guide wall 2122 can extend into the evaporator 250 to improve the assembly stability in cooperation with the evaporator 250.

[0083] Referring to Figure 5 According to some embodiments of the present application, the heater 230 includes a heating pipe, and at least part of the heating pipe extends to the lower side of the opening 2121.

[0084] The heater 230 can include a heating pipe, which can be an electric heating pipe. The heating pipe can extend along the distribution direction of the air supply cavity 211 and the first return air cavity 212, so that the heating pipe can correspond to the air supply cavity 211 and the opening 2121, respectively. Specifically, the heating pipe is arranged in a bent shape in the shell 210 to increase the total length of the heating pipe, increase the heating area of the heating pipe, and improve the defrosting effect.

[0085] Referring to Figure 5 According to some embodiments of the present application, the part of the heating pipe extending to the lower side of the opening 2121 has a heating section 231 extending along the height direction.

[0086] Taking the distribution of the air supply cavity 211 and the first return air cavity 212 along the depth direction of the refrigeration cavity as an example, because the cross-sectional area of the first return air cavity 212 is small, the width of the first return air cavity 212 in the depth direction of the refrigeration cavity is small, so that the length of the heating pipe corresponding to the first return air cavity 212 in the depth direction of the refrigeration cavity is limited. By arranging the heating section 231 extending along the height direction and arranging the heating section 231 at the lower side of the opening 2121, the total length of the heating pipe corresponding to the opening 2121 is increased, and the defrosting effect on the first return air cavity 212 is improved.

[0087] According to some embodiments of the present application, the heater 230 can be connected with a heat-conducting member, and the heat-conducting member can extend into the first return air cavity 212.

[0088] Because the height of the first return air cavity 212 is high, the heat of the heater 230 loses more heat as the height increases, which has a certain influence on the defrosting effect on the upper end of the first return air cavity 212. By connecting the heat-conducting member to the heater 230, the heat generated by the heater 230 can be transmitted along the heat-conducting member. For example, the lower end of the heat-conducting member is connected to the heater 230, and the other end extends upward into the first return air cavity 212 to transmit the heat of the heater 230 to the upper end of the heat-conducting member. The upper end of the heat-conducting member is closer to the upper end of the first return air cavity 212, thereby improving the defrosting effect on the upper end of the first return air cavity 212.

[0089] Referring to Figures 2-5 According to some embodiments of the present application, the upper end of the first return air cavity 212 can be provided with a first return air opening, and the side of the upper end of the first return air cavity 212 close to the air supply cavity 211 can be provided with a first heat preservation member 240.

[0090] According to the foregoing, the upper end of the first return air cavity 212 is connected to the first refrigeration cavity 101, and the first return air opening of the upper end of the first return air cavity 212 is used for the return air of the first refrigeration cavity 101. Because the temperature in the first refrigeration cavity 101 is higher than that in the second refrigeration cavity 102, when the higher-temperature air enters the upper end of the first return air cavity 212, the temperature difference between the hot air and the side wall of the first return air cavity 212 is the largest, and condensation and frosting are most likely to occur.

[0091] By providing the first heat preservation member 240 on the side of the upper end of the first return air cavity 212 close to the air supply cavity 211, the cold energy in the air supply cavity 211 is prevented from being transmitted to the upper end of the first return air cavity 212, which reduces the risk of condensation and frosting on the upper end of the first return air cavity 212 and also reduces the frosting height of the first return air cavity 212. When the system is defrosted, the heat generated by the defrosting heater 230 of the refrigeration evaporator 250 can be radiated to complete the defrosting work, thereby improving the defrosting efficiency and defrosting effect.

[0092] Referring to Figures 2-5 According to some embodiments of the present application, the side wall of the shell 210 can be provided with a second heat preservation member, and the thickness of the first heat preservation member 240 can be greater than the thickness of the second heat preservation member.

[0093] The temperature in the air supply cavity 211 is low. By providing the second heat preservation member on the side wall of the shell 210, the air supply cavity 211 is heat-preserved, the refrigeration effect is improved, and condensation is prevented. Specifically, in a vertical middle placement system, the shell 210 can be arranged in the middle of the second refrigeration cavity 102 to divide the second refrigeration cavity 102 into a first chamber and a second chamber. The side walls of the shell 210 corresponding to the first chamber and the second chamber are provided with the second heat preservation member to play a heat-preservation and heat-insulation role.

[0094] It should be noted that the thickness of the first heat preservation piece 240 refers to the thickness in the distribution direction of the air supply cavity 211 and the first return air cavity 212, and the thickness of the second heat preservation piece refers to the thickness in the distribution direction of the first cavity and the second cavity. By setting the thickness of the first heat preservation piece 240 to be greater than the thickness of the second heat preservation piece, the heat insulation performance of the first heat preservation piece 240 is ensured.

[0095] In an example, the first heat preservation piece 240 can be integrally formed with one of the second heat preservation pieces, which simplifies the installation process and improves the stability of the first heat preservation piece 240.

[0096] Referring to Figure 3 and Figure 4 According to some embodiments of the present application, the outer side wall of the first return air cavity 212 away from the air supply cavity 211 is provided with a heating piece 220, and the heater 230 can be synchronously switched with the heating piece 220.

[0097] The heater 230 and the heating piece 220 are both controlled by a main control board. By setting the heating piece 220 and the heater 230 to be synchronously switched, the air supply cavity 211 and the first return air cavity 212 are fully defrosted when the system is defrosted, which improves the defrosting efficiency and effect. After the system is defrosted, the heater 230 and the heating piece 220 are synchronously switched off to stop defrosting, which is simple to control and has low production and development costs.

[0098] Referring to Figures 1-5 According to some embodiments of the present application, the refrigeration cavity includes a first refrigeration cavity 101 and a second refrigeration cavity 102 distributed along the height direction, the first refrigeration cavity 101 is arranged on the upper side of the second refrigeration cavity 102, the air duct module 200 is arranged in the second refrigeration cavity 102, the upper end of the first return air cavity 212 is in communication with the first refrigeration cavity 101, the lower side of the air supply cavity 211 and the first return air cavity 212 is provided with a second return air cavity 213, the second return air cavity 213 is in communication with the second refrigeration cavity 102, and the heater 230 is arranged in the second return air cavity 213.

[0099] The second return air cavity 213 is arranged below the air supply cavity 211 and the first return air cavity 212, and the lower end of the air supply cavity 211 and the lower end of the first return air cavity 212 are in communication through the second return air cavity 213. The two sides of the second return air cavity 213 are both provided with a second return air port, and the second return air cavity 213 is in communication with the second refrigeration cavity 102 through the second return air port to return air to the second refrigeration cavity 102. By arranging the heater 230 in the second return air cavity 213, the second return air cavity 213, the air supply cavity 211 and the first return air cavity 212 are simultaneously defrosted, which has a simple structure and good defrosting effect.

[0100] According to some embodiments of the present application, the thickness W of the refrigeration equipment 1000 in the depth direction of the refrigeration cavity can satisfy 450mm≤W≤600mm.

[0101] The thickness of the refrigeration equipment 1000 is thin, and the appearance is good, which can better adapt to the indoor decoration of the user and improve the product quality. The thickness W of the refrigeration equipment 1000 in the depth direction of the refrigeration cavity is in the range of [450mm, 600mm], and for example, W can be 450mm, 500mm, 550mm, 600mm or other values between 450mm and 600mm, and the specific value is not limited.

[0102] According to some embodiments of the present application, the thickness S of the door body 300 can satisfy: 25mm≤S≤40mm.

[0103] The thickness of the door body 300 of the refrigeration equipment 1000 is thin, light and convenient to open, and reduces the influence on the thickness of the entire refrigeration equipment 1000, so that the refrigeration equipment 1000 can be made thinner to better adapt to the indoor decoration of the user and improve the product quality. The thickness S of the door body 300 is in the range of [25mm, 50mm], and for example, S can be 25mm, 30mm, 35mm, 40mm or other values between 25mm and 40mm, and the specific value is not limited.

[0104] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually a class, not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0105] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0106] In the description of the present application, "first feature" and "second feature" can include one or more features.

[0107] In the description of the application, the meaning of "a plurality" is two or more.

[0108] In the description of the application, the first feature is "on" or "under" the second feature can include the first and second features directly contact, but also can include the first and second features are not directly contact but through the additional features between them contact.

[0109] In the description of the application, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just means the first feature is higher than the second feature in height.

[0110] In the description of the application, the description of the reference terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the application. In the description of the application, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0111] Although the embodiments of the application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the application, and the scope of the application is defined by the claims and their equivalents.

Claims

1. A duct module, characterized in that, include: The housing has an air supply chamber and a first return air chamber inside, and the lower end of the first return air chamber has an opening that communicates with the air supply chamber. An evaporator and a fan are located inside the air supply cavity; A heater is disposed on the lower side of the air supply cavity and extends at least partially to the lower side of the opening; The opening faces downwards and is flared outwards along the direction of gas flow.

2. The air duct module according to claim 1, characterized in that, The air supply cavity extends along the height direction, and the opening has a guide wall on the side near the air supply cavity. The guide wall has a tendency to slope downwards along the direction near the air supply cavity.

3. The air duct module according to claim 1 or 2, characterized in that, The heater includes a heating tube, at least a portion of which extends to the underside of the opening.

4. The air duct module according to claim 3, characterized in that, The portion of the heating tube extending to the lower side of the opening has a heating section extending in the height direction.

5. The air duct module according to claim 1 or 2, characterized in that, A heat-conducting element is connected to the heater, and the heat-conducting element extends into the first return air cavity.

6. The air duct module according to claim 1 or 2, characterized in that, The upper end of the first return air chamber is provided with a first return air inlet, and the upper end of the first return air chamber is provided with a first heat insulation component on the side near the air supply chamber.

7. The air duct module according to claim 6, characterized in that, The side wall of the shell is provided with a second heat insulation component, and the thickness of the first heat insulation component is greater than the thickness of the second heat insulation component.

8. The air duct module according to claim 1 or 2, characterized in that, A heating element is provided on the outer wall of the first return air cavity on the side opposite to the supply air cavity, and the heater and the heating element are switched on and off synchronously.

9. A refrigeration device, characterized in that, include: The enclosure and the door, wherein a cooling chamber is provided inside the enclosure; The air duct module as described in any one of claims 1-8 is disposed within the cooling chamber, and the first return air chamber is connected to the cooling chamber.

10. The refrigeration equipment according to claim 9, characterized in that, The cooling chamber includes a first cooling chamber and a second cooling chamber distributed along the height direction. The first cooling chamber is located above the second cooling chamber. The air duct module is located inside the second cooling chamber. The upper end of the first return air chamber is connected to the first cooling chamber. A second return air chamber is located below the air supply chamber and the first return air chamber. The second return air chamber is connected to the second cooling chamber. The heater is located inside the second return air chamber.

11. The refrigeration equipment according to claim 9, characterized in that, The thickness W of the refrigeration device in the depth direction of the refrigeration cavity satisfies: 450mm≤W≤600mm; and / or, The thickness S of the door body satisfies: 25mm≤S≤40mm.

Images